[PATCH 0/6] breaking changes: switch default initial branch name to "main"

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* [PATCH 0/6] breaking changes: switch default initial branch name to "main"
@ 2025-08-27 15:24 Phillip Wood
  2025-08-27 15:24 ` [PATCH 1/6] t0018: switch default branch name to main Phillip Wood
                   ` (7 more replies)
  0 siblings, 8 replies; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang

From: Phillip Wood <phillip.wood@dunelm.org.uk>

This series switches the default branch name from "master" to "main"
when WITH_BREAKING_CHANGES is enabled. We have been warning that the
default name will change since 675704c74dd (init: provide useful advice
about init.defaultBranch, 2020-12-11) and the major git forges have all
switched their default branch name to "main", so I think it makes sense
to change the default branch name in git to match the wider ecosystem.

The first five patches update tests that currently require a default
branch name different to "main". The sixth patch then changes the
default branch "main" and removes GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
when WITH_BREAKING_CHANGES is enabled. Patch 2 is quite large but
is mechanically generated so it should be possible to review it by
checking that the changes can be reproduced.

This is an alternative to changing the branch name now as suggested in
https://lore.kernel.org<pull.1961.git.1756183921623.gitgitgadget@gmail.com

Base-Commit: f814da676ae46aac5be0a98b99373a76dee6cedb
Published-As: https://github.com/phillipwood/git/releases/tag/pw%2Finitial-branch-is-main%2Fv1
View-Changes-At: https://github.com/phillipwood/git/compare/f814da676...487d1a331
Fetch-It-Via: git fetch https://github.com/phillipwood/git pw/initial-branch-is-main/v1


Phillip Wood (6):
  t0018: switch default branch name to main
  t4013: switch default branch name to main
  t9902: switch default branch name to main
  t0613: stop setting default initial branch
  t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  breaking-changes: switch default branch to main

 Documentation/BreakingChanges.adoc            |   5 +
 Documentation/git-init.adoc                   |  12 +-
 advice.c                                      |   2 +
 advice.h                                      |   2 +
 ci/run-build-and-tests.sh                     |   1 -
 refs.c                                        |  16 +-
 t/t0001-init.sh                               |   9 +-
 t/t0018-advice.sh                             |   8 +-
 t/t0613-reftable-write-options.sh             |  18 +-
 t/t1403-show-ref.sh                           |   6 +-
 t/t4013-diff-various.sh                       | 228 +++++++++---------
 ...ree_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...iff.diff-tree_--cc_--patch-with-stat_main} |   2 +-
 ...r => diff.diff-tree_--cc_--shortstat_main} |   2 +-
 ...diff.diff-tree_--cc_--stat_--summary_main} |   2 +-
 ...master => diff.diff-tree_--cc_--stat_main} |   2 +-
 ...e_--cc_master => diff.diff-tree_--cc_main} |   2 +-
 ...master => diff.diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.diff-tree_-c_--stat_--summary_main} |   2 +-
 ...t_master => diff.diff-tree_-c_--stat_main} |   2 +-
 ...-tree_-c_master => diff.diff-tree_-c_main} |   2 +-
 ...-tree_-m_master => diff.diff-tree_-m_main} |   2 +-
 ...-p_-m_master => diff.diff-tree_-p_-m_main} |   2 +-
 t/t4013/diff.diff-tree_-p_main                |   2 +
 t/t4013/diff.diff-tree_-p_master              |   2 -
 t/t4013/diff.diff-tree_main                   |   2 +
 t/t4013/diff.diff-tree_master                 |   2 -
 t/t4013/diff.diff_--dirstat_--cc_main~1_main  |   3 +
 .../diff.diff_--dirstat_--cc_master~1_master  |   3 -
 t/t4013/diff.diff_--dirstat_main~1_main~2     |   3 +
 t/t4013/diff.diff_--dirstat_master~1_master~2 |   3 -
 ...ff.diff_--line-prefix=abc_main_main^_side} |   2 +-
 ...master^_side => diff.diff_main_main^_side} |   2 +-
 ...mat-patch_--attach_--stdout_initial..main} |   2 +-
 ...at-patch_--attach_--stdout_initial..main^} |   2 +-
 ...e_--stdout_--numbered-files_initial..main} |   2 +-
 ...t_--subject-prefix=TESTCASE_initial..main} |   2 +-
 ...mat-patch_--inline_--stdout_initial..main} |   2 +-
 ...at-patch_--inline_--stdout_initial..main^} |   2 +-
 ...t-patch_--inline_--stdout_initial..main^^} |   2 +-
 ...--stdout_--cover-letter_-n_initial..main^} |   2 +-
 ...atch_--stdout_--no-numbered_initial..main} |   2 +-
 ...t-patch_--stdout_--numbered_initial..main} |   2 +-
 ... diff.format-patch_--stdout_initial..main} |   2 +-
 ...diff.format-patch_--stdout_initial..main^} |   2 +-
 ..._-m_-p_master => diff.log_--cc_-m_-p_main} |   2 +-
 t/t4013/diff.log_--decorate=full_--all        |   2 +-
 ..._--decorate=full_--clear-decorations_--all |   2 +-
 ...f.log_--decorate=full_--decorate-all_--all |   2 +-
 t/t4013/diff.log_--decorate_--all             |   2 +-
 ...f.log_--decorate_--clear-decorations_--all |   2 +-
 .../diff.log_--decorate_--decorate-all_--all  |   2 +-
 ... diff.log_--diff-merges=first-parent_main} |   2 +-
 ..._--diff-merges=off_-p_--first-parent_main} |   2 +-
 ..._--first-parent_--diff-merges=off_-p_main} |   2 +-
 ...g_--no-diff-merges_-p_--first-parent_main} |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...master => diff.log_--patch-with-stat_main} |   2 +-
 ...> diff.log_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...g_--root_--patch-with-stat_--summary_main} |   2 +-
 ...=> diff.log_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...root_-p_master => diff.log_--root_-p_main} |   2 +-
 ...log_--root_master => diff.log_--root_main} |   2 +-
 ...ter => diff.log_-GF_-p_--pickaxe-all_main} |   2 +-
 ...log_-GF_-p_master => diff.log_-GF_-p_main} |   2 +-
 ...{diff.log_-SF_master => diff.log_-GF_main} |   2 +-
 ...aster => diff.log_-IA_-IB_-I1_-I2_-p_main} |   2 +-
 ...log_-SF_-p_master => diff.log_-SF_-p_main} |   2 +-
 ...{diff.log_-GF_master => diff.log_-SF_main} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=0       |   2 +
 ...ount=2 => diff.log_-SF_main_--max-count=1} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=2       |   7 +
 t/t4013/diff.log_-SF_master_--max-count=0     |   2 -
 t/t4013/diff.log_-SF_master_--max-count=1     |   7 -
 ...iff.log_-S_F_master => diff.log_-S_F_main} |   2 +-
 ...cc_-m_-p_master => diff.log_-c_-m_-p_main} |   2 +-
 ...-m_--raw_master => diff.log_-m_--raw_main} |   2 +-
 ..._--stat_master => diff.log_-m_--stat_main} |   2 +-
 ...ter => diff.log_-m_-p_--first-parent_main} |   2 +-
 ...f.log_-m_-p_master => diff.log_-m_-p_main} |   2 +-
 ...ff.log_-p_--diff-merges=first-parent_main} |   2 +-
 ...master => diff.log_-p_--first-parent_main} |   2 +-
 .../{diff.log_-p_master => diff.log_-p_main}  |   2 +-
 t/t4013/{diff.log_master => diff.log_main}    |   2 +-
 ...iff.noellipses-diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.noellipses-whatchanged_--root_main} |   2 +-
 ...r => diff.noellipses-whatchanged_-SF_main} |   2 +-
 ...aster => diff.noellipses-whatchanged_main} |   2 +-
 ...t_master => diff.show_--first-parent_main} |   2 +-
 ...{diff.show_-c_master => diff.show_-c_main} |   2 +-
 ...{diff.show_-m_master => diff.show_-m_main} |   2 +-
 t/t4013/{diff.show_master => diff.show_main}  |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...> diff.whatchanged_--patch-with-stat_main} |   2 +-
 ...hatchanged_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...d_--root_--patch-with-stat_--summary_main} |   2 +-
 ...whatchanged_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...master => diff.whatchanged_--root_-p_main} |   2 +-
 ...ot_master => diff.whatchanged_--root_main} |   2 +-
 ...-p_master => diff.whatchanged_-SF_-p_main} |   2 +-
 ...d_-SF_master => diff.whatchanged_-SF_main} |   2 +-
 ...ged_-p_master => diff.whatchanged_-p_main} |   2 +-
 ...atchanged_master => diff.whatchanged_main} |   2 +-
 t/t9902-completion.sh                         |   6 +-
 t/test-lib.sh                                 |  15 +-
 109 files changed, 281 insertions(+), 253 deletions(-)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_--summary_master => diff.diff-tree_--cc_--patch-with-stat_--summary_main} (86%)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_master => diff.diff-tree_--cc_--patch-with-stat_main} (89%)
 rename t/t4013/{diff.diff-tree_--cc_--shortstat_master => diff.diff-tree_--cc_--shortstat_main} (65%)
 rename t/t4013/{diff.diff-tree_-c_--stat_--summary_master => diff.diff-tree_--cc_--stat_--summary_main} (71%)
 rename t/t4013/{diff.diff-tree_-c_--stat_master => diff.diff-tree_--cc_--stat_main} (76%)
 rename t/t4013/{diff.diff-tree_--cc_master => diff.diff-tree_--cc_main} (91%)
 rename t/t4013/{diff.diff-tree_-c_--abbrev_master => diff.diff-tree_-c_--abbrev_main} (83%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_--summary_master => diff.diff-tree_-c_--stat_--summary_main} (70%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_master => diff.diff-tree_-c_--stat_main} (75%)
 rename t/t4013/{diff.diff-tree_-c_master => diff.diff-tree_-c_main} (93%)
 rename t/t4013/{diff.diff-tree_-m_master => diff.diff-tree_-m_main} (96%)
 rename t/t4013/{diff.diff-tree_-p_-m_master => diff.diff-tree_-p_-m_main} (97%)
 create mode 100644 t/t4013/diff.diff-tree_-p_main
 delete mode 100644 t/t4013/diff.diff-tree_-p_master
 create mode 100644 t/t4013/diff.diff-tree_main
 delete mode 100644 t/t4013/diff.diff-tree_master
 create mode 100644 t/t4013/diff.diff_--dirstat_--cc_main~1_main
 delete mode 100644 t/t4013/diff.diff_--dirstat_--cc_master~1_master
 create mode 100644 t/t4013/diff.diff_--dirstat_main~1_main~2
 delete mode 100644 t/t4013/diff.diff_--dirstat_master~1_master~2
 rename t/t4013/{diff.diff_--line-prefix=abc_master_master^_side => diff.diff_--line-prefix=abc_main_main^_side} (87%)
 rename t/t4013/{diff.diff_master_master^_side => diff.diff_main_main^_side} (89%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master => diff.format-patch_--attach_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master^ => diff.format-patch_--attach_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--numbered-files_initial..master => diff.format-patch_--inline_--stdout_--numbered-files_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master => diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master => diff.format-patch_--inline_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^ => diff.format-patch_--inline_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^^ => diff.format-patch_--inline_--stdout_initial..main^^} (95%)
 rename t/t4013/{diff.format-patch_--stdout_--cover-letter_-n_initial..master^ => diff.format-patch_--stdout_--cover-letter_-n_initial..main^} (96%)
 rename t/t4013/{diff.format-patch_--stdout_--no-numbered_initial..master => diff.format-patch_--stdout_--no-numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_--numbered_initial..master => diff.format-patch_--stdout_--numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master => diff.format-patch_--stdout_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master^ => diff.format-patch_--stdout_initial..main^} (96%)
 rename t/t4013/{diff.log_-c_-m_-p_master => diff.log_--cc_-m_-p_main} (99%)
 rename t/t4013/{diff.log_--diff-merges=first-parent_master => diff.log_--diff-merges=first-parent_main} (95%)
 rename t/t4013/{diff.log_--no-diff-merges_-p_--first-parent_master => diff.log_--diff-merges=off_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--first-parent_--diff-merges=off_-p_master => diff.log_--first-parent_--diff-merges=off_-p_main} (95%)
 rename t/t4013/{diff.log_--diff-merges=off_-p_--first-parent_master => diff.log_--no-diff-merges_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--patch-with-stat_--summary_master_--_dir_ => diff.log_--patch-with-stat_--summary_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--patch-with-stat_master => diff.log_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--patch-with-stat_master_--_dir_ => diff.log_--patch-with-stat_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--root_--cc_--patch-with-stat_--summary_master => diff.log_--root_--cc_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_--summary_master => diff.log_--root_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_master => diff.log_--root_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--root_-c_--patch-with-stat_--summary_master => diff.log_--root_-c_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_-p_master => diff.log_--root_-p_main} (98%)
 rename t/t4013/{diff.log_--root_master => diff.log_--root_main} (96%)
 rename t/t4013/{diff.log_-GF_-p_--pickaxe-all_master => diff.log_-GF_-p_--pickaxe-all_main} (90%)
 rename t/t4013/{diff.log_-GF_-p_master => diff.log_-GF_-p_main} (91%)
 rename t/t4013/{diff.log_-SF_master => diff.log_-GF_main} (86%)
 rename t/t4013/{diff.log_-IA_-IB_-I1_-I2_-p_master => diff.log_-IA_-IB_-I1_-I2_-p_main} (97%)
 rename t/t4013/{diff.log_-SF_-p_master => diff.log_-SF_-p_main} (91%)
 rename t/t4013/{diff.log_-GF_master => diff.log_-SF_main} (86%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=0
 rename t/t4013/{diff.log_-SF_master_--max-count=2 => diff.log_-SF_main_--max-count=1} (79%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=2
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=0
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=1
 rename t/t4013/{diff.log_-S_F_master => diff.log_-S_F_main} (86%)
 rename t/t4013/{diff.log_--cc_-m_-p_master => diff.log_-c_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-m_--raw_master => diff.log_-m_--raw_main} (98%)
 rename t/t4013/{diff.log_-m_--stat_master => diff.log_-m_--stat_main} (98%)
 rename t/t4013/{diff.log_-m_-p_--first-parent_master => diff.log_-m_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-m_-p_master => diff.log_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-p_--diff-merges=first-parent_master => diff.log_-p_--diff-merges=first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_--first-parent_master => diff.log_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_master => diff.log_-p_main} (98%)
 rename t/t4013/{diff.log_master => diff.log_main} (97%)
 rename t/t4013/{diff.noellipses-diff-tree_-c_--abbrev_master => diff.noellipses-diff-tree_-c_--abbrev_main} (81%)
 rename t/t4013/{diff.noellipses-whatchanged_--root_master => diff.noellipses-whatchanged_--root_main} (96%)
 rename t/t4013/{diff.noellipses-whatchanged_-SF_master => diff.noellipses-whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.noellipses-whatchanged_master => diff.noellipses-whatchanged_main} (96%)
 rename t/t4013/{diff.show_--first-parent_master => diff.show_--first-parent_main} (92%)
 rename t/t4013/{diff.show_-c_master => diff.show_-c_main} (95%)
 rename t/t4013/{diff.show_-m_master => diff.show_-m_main} (98%)
 rename t/t4013/{diff.show_master => diff.show_main} (96%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_--summary_master_--_dir_ => diff.whatchanged_--patch-with-stat_--summary_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master => diff.whatchanged_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master_--_dir_ => diff.whatchanged_--patch-with-stat_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master => diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_--summary_master => diff.whatchanged_--root_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_master => diff.whatchanged_--root_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-c_--patch-with-stat_--summary_master => diff.whatchanged_--root_-c_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-p_master => diff.whatchanged_--root_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_--root_master => diff.whatchanged_--root_main} (97%)
 rename t/t4013/{diff.whatchanged_-SF_-p_master => diff.whatchanged_-SF_-p_main} (89%)
 rename t/t4013/{diff.whatchanged_-SF_master => diff.whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.whatchanged_-p_master => diff.whatchanged_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_master => diff.whatchanged_main} (97%)

-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply	[flat|nested] 39+ messages in thread

* [PATCH 1/6] t0018: switch default branch name to main
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
@ 2025-08-27 15:24 ` Phillip Wood
  2025-08-27 17:21   ` Junio C Hamano
  2025-08-27 15:24 ` [PATCH 2/6] t4013: " Phillip Wood
                   ` (6 subsequent siblings)
  7 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

These tests use "trunk" as the default branch name but the exact
name of the branch is incidental to testing if the advice message
includes it. Git 3.0 will change the default branch name to "main"
and remove support for GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME so change
these test to use "main" instead of "topic".

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t0018-advice.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/t/t0018-advice.sh b/t/t0018-advice.sh
index f68e08d0b14..c695ade4be8 100755
--- a/t/t0018-advice.sh
+++ b/t/t0018-advice.sh
@@ -2,7 +2,7 @@
 
 test_description='Test advise_if_enabled functionality'
 
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=trunk
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./test-lib.sh
@@ -33,7 +33,7 @@ test_expect_success 'advice should not be printed when config variable is set to
 
 test_expect_success 'advice should not be printed when --no-advice is used' '
 	q_to_tab >expect <<-\EOF &&
-	On branch trunk
+	On branch main
 
 	No commits yet
 
@@ -55,7 +55,7 @@ test_expect_success 'advice should not be printed when --no-advice is used' '
 
 test_expect_success 'advice should not be printed when GIT_ADVICE is set to false' '
 	q_to_tab >expect <<-\EOF &&
-	On branch trunk
+	On branch main
 
 	No commits yet
 
@@ -77,7 +77,7 @@ test_expect_success 'advice should not be printed when GIT_ADVICE is set to fals
 
 test_expect_success 'advice should be printed when GIT_ADVICE is set to true' '
 	q_to_tab >expect <<-\EOF &&
-	On branch trunk
+	On branch main
 
 	No commits yet
 
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH 2/6] t4013: switch default branch name to main
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
  2025-08-27 15:24 ` [PATCH 1/6] t0018: switch default branch name to main Phillip Wood
@ 2025-08-27 15:24 ` Phillip Wood
  2025-08-27 15:24 ` [PATCH 3/6] t9902: " Phillip Wood
                   ` (5 subsequent siblings)
  7 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

In preparation for removing TEST_GIT_DEFAULT_INITIAL_BRANCH in Git 3.0
switch the default branch name to main.

The changes here are purely mechanical replacing 'master' with 'main'

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t4013-diff-various.sh                       | 228 +++++++++---------
 ...ree_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...iff.diff-tree_--cc_--patch-with-stat_main} |   2 +-
 ...r => diff.diff-tree_--cc_--shortstat_main} |   2 +-
 ...diff.diff-tree_--cc_--stat_--summary_main} |   2 +-
 ...master => diff.diff-tree_--cc_--stat_main} |   2 +-
 ...e_--cc_master => diff.diff-tree_--cc_main} |   2 +-
 ...master => diff.diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.diff-tree_-c_--stat_--summary_main} |   2 +-
 ...t_master => diff.diff-tree_-c_--stat_main} |   2 +-
 ...-tree_-c_master => diff.diff-tree_-c_main} |   2 +-
 ...-tree_-m_master => diff.diff-tree_-m_main} |   2 +-
 ...-p_-m_master => diff.diff-tree_-p_-m_main} |   2 +-
 t/t4013/diff.diff-tree_-p_main                |   2 +
 t/t4013/diff.diff-tree_-p_master              |   2 -
 t/t4013/diff.diff-tree_main                   |   2 +
 t/t4013/diff.diff-tree_master                 |   2 -
 t/t4013/diff.diff_--dirstat_--cc_main~1_main  |   3 +
 .../diff.diff_--dirstat_--cc_master~1_master  |   3 -
 t/t4013/diff.diff_--dirstat_main~1_main~2     |   3 +
 t/t4013/diff.diff_--dirstat_master~1_master~2 |   3 -
 ...ff.diff_--line-prefix=abc_main_main^_side} |   2 +-
 ...master^_side => diff.diff_main_main^_side} |   2 +-
 ...mat-patch_--attach_--stdout_initial..main} |   2 +-
 ...at-patch_--attach_--stdout_initial..main^} |   2 +-
 ...e_--stdout_--numbered-files_initial..main} |   2 +-
 ...t_--subject-prefix=TESTCASE_initial..main} |   2 +-
 ...mat-patch_--inline_--stdout_initial..main} |   2 +-
 ...at-patch_--inline_--stdout_initial..main^} |   2 +-
 ...t-patch_--inline_--stdout_initial..main^^} |   2 +-
 ...--stdout_--cover-letter_-n_initial..main^} |   2 +-
 ...atch_--stdout_--no-numbered_initial..main} |   2 +-
 ...t-patch_--stdout_--numbered_initial..main} |   2 +-
 ... diff.format-patch_--stdout_initial..main} |   2 +-
 ...diff.format-patch_--stdout_initial..main^} |   2 +-
 ..._-m_-p_master => diff.log_--cc_-m_-p_main} |   2 +-
 t/t4013/diff.log_--decorate=full_--all        |   2 +-
 ..._--decorate=full_--clear-decorations_--all |   2 +-
 ...f.log_--decorate=full_--decorate-all_--all |   2 +-
 t/t4013/diff.log_--decorate_--all             |   2 +-
 ...f.log_--decorate_--clear-decorations_--all |   2 +-
 .../diff.log_--decorate_--decorate-all_--all  |   2 +-
 ... diff.log_--diff-merges=first-parent_main} |   2 +-
 ..._--diff-merges=off_-p_--first-parent_main} |   2 +-
 ..._--first-parent_--diff-merges=off_-p_main} |   2 +-
 ...g_--no-diff-merges_-p_--first-parent_main} |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...master => diff.log_--patch-with-stat_main} |   2 +-
 ...> diff.log_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...g_--root_--patch-with-stat_--summary_main} |   2 +-
 ...=> diff.log_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...root_-p_master => diff.log_--root_-p_main} |   2 +-
 ...log_--root_master => diff.log_--root_main} |   2 +-
 ...ter => diff.log_-GF_-p_--pickaxe-all_main} |   2 +-
 ...log_-GF_-p_master => diff.log_-GF_-p_main} |   2 +-
 ...{diff.log_-SF_master => diff.log_-GF_main} |   2 +-
 ...aster => diff.log_-IA_-IB_-I1_-I2_-p_main} |   2 +-
 ...log_-SF_-p_master => diff.log_-SF_-p_main} |   2 +-
 ...{diff.log_-GF_master => diff.log_-SF_main} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=0       |   2 +
 ...ount=2 => diff.log_-SF_main_--max-count=1} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=2       |   7 +
 t/t4013/diff.log_-SF_master_--max-count=0     |   2 -
 t/t4013/diff.log_-SF_master_--max-count=1     |   7 -
 ...iff.log_-S_F_master => diff.log_-S_F_main} |   2 +-
 ...cc_-m_-p_master => diff.log_-c_-m_-p_main} |   2 +-
 ...-m_--raw_master => diff.log_-m_--raw_main} |   2 +-
 ..._--stat_master => diff.log_-m_--stat_main} |   2 +-
 ...ter => diff.log_-m_-p_--first-parent_main} |   2 +-
 ...f.log_-m_-p_master => diff.log_-m_-p_main} |   2 +-
 ...ff.log_-p_--diff-merges=first-parent_main} |   2 +-
 ...master => diff.log_-p_--first-parent_main} |   2 +-
 .../{diff.log_-p_master => diff.log_-p_main}  |   2 +-
 t/t4013/{diff.log_master => diff.log_main}    |   2 +-
 ...iff.noellipses-diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.noellipses-whatchanged_--root_main} |   2 +-
 ...r => diff.noellipses-whatchanged_-SF_main} |   2 +-
 ...aster => diff.noellipses-whatchanged_main} |   2 +-
 ...t_master => diff.show_--first-parent_main} |   2 +-
 ...{diff.show_-c_master => diff.show_-c_main} |   2 +-
 ...{diff.show_-m_master => diff.show_-m_main} |   2 +-
 t/t4013/{diff.show_master => diff.show_main}  |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...> diff.whatchanged_--patch-with-stat_main} |   2 +-
 ...hatchanged_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...d_--root_--patch-with-stat_--summary_main} |   2 +-
 ...whatchanged_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...master => diff.whatchanged_--root_-p_main} |   2 +-
 ...ot_master => diff.whatchanged_--root_main} |   2 +-
 ...-p_master => diff.whatchanged_-SF_-p_main} |   2 +-
 ...d_-SF_master => diff.whatchanged_-SF_main} |   2 +-
 ...ged_-p_master => diff.whatchanged_-p_main} |   2 +-
 ...atchanged_master => diff.whatchanged_main} |   2 +-
 97 files changed, 217 insertions(+), 217 deletions(-)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_--summary_master => diff.diff-tree_--cc_--patch-with-stat_--summary_main} (86%)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_master => diff.diff-tree_--cc_--patch-with-stat_main} (89%)
 rename t/t4013/{diff.diff-tree_--cc_--shortstat_master => diff.diff-tree_--cc_--shortstat_main} (65%)
 rename t/t4013/{diff.diff-tree_-c_--stat_--summary_master => diff.diff-tree_--cc_--stat_--summary_main} (71%)
 rename t/t4013/{diff.diff-tree_-c_--stat_master => diff.diff-tree_--cc_--stat_main} (76%)
 rename t/t4013/{diff.diff-tree_--cc_master => diff.diff-tree_--cc_main} (91%)
 rename t/t4013/{diff.diff-tree_-c_--abbrev_master => diff.diff-tree_-c_--abbrev_main} (83%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_--summary_master => diff.diff-tree_-c_--stat_--summary_main} (70%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_master => diff.diff-tree_-c_--stat_main} (75%)
 rename t/t4013/{diff.diff-tree_-c_master => diff.diff-tree_-c_main} (93%)
 rename t/t4013/{diff.diff-tree_-m_master => diff.diff-tree_-m_main} (96%)
 rename t/t4013/{diff.diff-tree_-p_-m_master => diff.diff-tree_-p_-m_main} (97%)
 create mode 100644 t/t4013/diff.diff-tree_-p_main
 delete mode 100644 t/t4013/diff.diff-tree_-p_master
 create mode 100644 t/t4013/diff.diff-tree_main
 delete mode 100644 t/t4013/diff.diff-tree_master
 create mode 100644 t/t4013/diff.diff_--dirstat_--cc_main~1_main
 delete mode 100644 t/t4013/diff.diff_--dirstat_--cc_master~1_master
 create mode 100644 t/t4013/diff.diff_--dirstat_main~1_main~2
 delete mode 100644 t/t4013/diff.diff_--dirstat_master~1_master~2
 rename t/t4013/{diff.diff_--line-prefix=abc_master_master^_side => diff.diff_--line-prefix=abc_main_main^_side} (87%)
 rename t/t4013/{diff.diff_master_master^_side => diff.diff_main_main^_side} (89%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master => diff.format-patch_--attach_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master^ => diff.format-patch_--attach_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--numbered-files_initial..master => diff.format-patch_--inline_--stdout_--numbered-files_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master => diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master => diff.format-patch_--inline_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^ => diff.format-patch_--inline_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^^ => diff.format-patch_--inline_--stdout_initial..main^^} (95%)
 rename t/t4013/{diff.format-patch_--stdout_--cover-letter_-n_initial..master^ => diff.format-patch_--stdout_--cover-letter_-n_initial..main^} (96%)
 rename t/t4013/{diff.format-patch_--stdout_--no-numbered_initial..master => diff.format-patch_--stdout_--no-numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_--numbered_initial..master => diff.format-patch_--stdout_--numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master => diff.format-patch_--stdout_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master^ => diff.format-patch_--stdout_initial..main^} (96%)
 rename t/t4013/{diff.log_-c_-m_-p_master => diff.log_--cc_-m_-p_main} (99%)
 rename t/t4013/{diff.log_--diff-merges=first-parent_master => diff.log_--diff-merges=first-parent_main} (95%)
 rename t/t4013/{diff.log_--no-diff-merges_-p_--first-parent_master => diff.log_--diff-merges=off_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--first-parent_--diff-merges=off_-p_master => diff.log_--first-parent_--diff-merges=off_-p_main} (95%)
 rename t/t4013/{diff.log_--diff-merges=off_-p_--first-parent_master => diff.log_--no-diff-merges_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--patch-with-stat_--summary_master_--_dir_ => diff.log_--patch-with-stat_--summary_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--patch-with-stat_master => diff.log_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--patch-with-stat_master_--_dir_ => diff.log_--patch-with-stat_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--root_--cc_--patch-with-stat_--summary_master => diff.log_--root_--cc_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_--summary_master => diff.log_--root_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_master => diff.log_--root_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--root_-c_--patch-with-stat_--summary_master => diff.log_--root_-c_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_-p_master => diff.log_--root_-p_main} (98%)
 rename t/t4013/{diff.log_--root_master => diff.log_--root_main} (96%)
 rename t/t4013/{diff.log_-GF_-p_--pickaxe-all_master => diff.log_-GF_-p_--pickaxe-all_main} (90%)
 rename t/t4013/{diff.log_-GF_-p_master => diff.log_-GF_-p_main} (91%)
 rename t/t4013/{diff.log_-SF_master => diff.log_-GF_main} (86%)
 rename t/t4013/{diff.log_-IA_-IB_-I1_-I2_-p_master => diff.log_-IA_-IB_-I1_-I2_-p_main} (97%)
 rename t/t4013/{diff.log_-SF_-p_master => diff.log_-SF_-p_main} (91%)
 rename t/t4013/{diff.log_-GF_master => diff.log_-SF_main} (86%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=0
 rename t/t4013/{diff.log_-SF_master_--max-count=2 => diff.log_-SF_main_--max-count=1} (79%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=2
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=0
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=1
 rename t/t4013/{diff.log_-S_F_master => diff.log_-S_F_main} (86%)
 rename t/t4013/{diff.log_--cc_-m_-p_master => diff.log_-c_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-m_--raw_master => diff.log_-m_--raw_main} (98%)
 rename t/t4013/{diff.log_-m_--stat_master => diff.log_-m_--stat_main} (98%)
 rename t/t4013/{diff.log_-m_-p_--first-parent_master => diff.log_-m_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-m_-p_master => diff.log_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-p_--diff-merges=first-parent_master => diff.log_-p_--diff-merges=first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_--first-parent_master => diff.log_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_master => diff.log_-p_main} (98%)
 rename t/t4013/{diff.log_master => diff.log_main} (97%)
 rename t/t4013/{diff.noellipses-diff-tree_-c_--abbrev_master => diff.noellipses-diff-tree_-c_--abbrev_main} (81%)
 rename t/t4013/{diff.noellipses-whatchanged_--root_master => diff.noellipses-whatchanged_--root_main} (96%)
 rename t/t4013/{diff.noellipses-whatchanged_-SF_master => diff.noellipses-whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.noellipses-whatchanged_master => diff.noellipses-whatchanged_main} (96%)
 rename t/t4013/{diff.show_--first-parent_master => diff.show_--first-parent_main} (92%)
 rename t/t4013/{diff.show_-c_master => diff.show_-c_main} (95%)
 rename t/t4013/{diff.show_-m_master => diff.show_-m_main} (98%)
 rename t/t4013/{diff.show_master => diff.show_main} (96%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_--summary_master_--_dir_ => diff.whatchanged_--patch-with-stat_--summary_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master => diff.whatchanged_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master_--_dir_ => diff.whatchanged_--patch-with-stat_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master => diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_--summary_master => diff.whatchanged_--root_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_master => diff.whatchanged_--root_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-c_--patch-with-stat_--summary_master => diff.whatchanged_--root_-c_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-p_master => diff.whatchanged_--root_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_--root_master => diff.whatchanged_--root_main} (97%)
 rename t/t4013/{diff.whatchanged_-SF_-p_master => diff.whatchanged_-SF_-p_main} (89%)
 rename t/t4013/{diff.whatchanged_-SF_master => diff.whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.whatchanged_-p_master => diff.whatchanged_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_master => diff.whatchanged_main} (97%)

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index cfeec239e09..55a06eadb31 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -5,7 +5,7 @@
 
 test_description='Various diff formatting options'
 
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./test-lib.sh
@@ -70,7 +70,7 @@ test_expect_success setup '
 	GIT_COMMITTER_DATE="2006-06-26 00:04:00 +0000" &&
 	export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
 
-	git checkout master &&
+	git checkout main &&
 	git pull -s ours --no-rebase . side &&
 
 	GIT_AUTHOR_DATE="2006-06-26 00:05:00 +0000" &&
@@ -95,15 +95,15 @@ test_expect_success setup '
 	test_write_lines B A >dir/sub &&
 	git add dir/sub &&
 	git commit -m "Rearranged lines in dir/sub" &&
-	git checkout master &&
+	git checkout main &&
 
 	GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
 	GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
 	export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
 	git checkout -b mode initial &&
 	git update-index --chmod=+x file0 &&
 	git commit -m "update mode" &&
-	git checkout -f master &&
+	git checkout -f main &&
 
 	GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
 	GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
@@ -112,12 +112,12 @@ test_expect_success setup '
 	git update-index --chmod=+x file2 &&
 	git commit -m "update mode (file2)" &&
 	git notes add -m "note" &&
-	git checkout -f master &&
+	git checkout -f main &&
 
-	# Same merge as master, but with parents reversed. Hide it in a
+	# Same merge as main, but with parents reversed. Hide it in a
 	# pseudo-ref to avoid impacting tests with --all.
 	commit=$(echo reverse |
-		 git commit-tree -p master^2 -p master^1 master^{tree}) &&
+		 git commit-tree -p main^2 -p main^1 main^{tree}) &&
 	git update-ref REVERSE $commit &&
 
 	git config diff.renames false &&
@@ -127,15 +127,15 @@ test_expect_success setup '
 
 : <<\EOF
 ! [initial] Initial
- * [master] Merge branch 'side'
+ * [main] Merge branch 'side'
   ! [rearrange] Rearranged lines in dir/sub
    ! [side] Side
 ----
   +  [rearrange] Rearranged lines in dir/sub
- -   [master] Merge branch 'side'
+ -   [main] Merge branch 'side'
  * + [side] Side
- *   [master^] Third
- *   [master~2] Second
+ *   [main^] Third
+ *   [main~2] Second
 +*++ [initial] Initial
 EOF
 
@@ -311,64 +311,64 @@ diff-tree initial mode
 diff-tree --stat initial mode
 diff-tree --summary initial mode
 
-diff-tree master
-diff-tree -m master
-diff-tree -p master
-diff-tree -p -m master
-diff-tree -c master
-diff-tree -c --abbrev master
-:noellipses diff-tree -c --abbrev master
-diff-tree --cc master
+diff-tree main
+diff-tree -m main
+diff-tree -p main
+diff-tree -p -m main
+diff-tree -c main
+diff-tree -c --abbrev main
+:noellipses diff-tree -c --abbrev main
+diff-tree --cc main
 # stat only should show the diffstat with the first parent
-diff-tree -c --stat master
-diff-tree --cc --stat master
-diff-tree -c --stat --summary master
-diff-tree --cc --stat --summary master
+diff-tree -c --stat main
+diff-tree --cc --stat main
+diff-tree -c --stat --summary main
+diff-tree --cc --stat --summary main
 # stat summary should show the diffstat and summary with the first parent
 diff-tree -c --stat --summary side
 diff-tree --cc --stat --summary side
-diff-tree --cc --shortstat master
+diff-tree --cc --shortstat main
 diff-tree --cc --summary REVERSE
 # improved by Timo's patch
-diff-tree --cc --patch-with-stat master
+diff-tree --cc --patch-with-stat main
 # improved by Timo's patch
-diff-tree --cc --patch-with-stat --summary master
+diff-tree --cc --patch-with-stat --summary main
 # this is correct
 diff-tree --cc --patch-with-stat --summary side
 
-log master
-log -p master
-log --root master
-log --root -p master
-log --patch-with-stat master
-log --root --patch-with-stat master
-log --root --patch-with-stat --summary master
-# improved by Timo's patch
-log --root -c --patch-with-stat --summary master
-# improved by Timo's patch
-log --root --cc --patch-with-stat --summary master
-log --no-diff-merges -p --first-parent master
-log --diff-merges=off -p --first-parent master
-log --first-parent --diff-merges=off -p master
-log -p --first-parent master
-log -p --diff-merges=first-parent master
-log --diff-merges=first-parent master
-log -m -p --first-parent master
-log -m -p master
-log --cc -m -p master
-log -c -m -p master
-log -m --raw master
-log -m --stat master
-log -SF master
-log -S F master
-log -SF -p master
-log -SF master --max-count=0
-log -SF master --max-count=1
-log -SF master --max-count=2
-log -GF master
-log -GF -p master
-log -GF -p --pickaxe-all master
-log -IA -IB -I1 -I2 -p master
+log main
+log -p main
+log --root main
+log --root -p main
+log --patch-with-stat main
+log --root --patch-with-stat main
+log --root --patch-with-stat --summary main
+# improved by Timo's patch
+log --root -c --patch-with-stat --summary main
+# improved by Timo's patch
+log --root --cc --patch-with-stat --summary main
+log --no-diff-merges -p --first-parent main
+log --diff-merges=off -p --first-parent main
+log --first-parent --diff-merges=off -p main
+log -p --first-parent main
+log -p --diff-merges=first-parent main
+log --diff-merges=first-parent main
+log -m -p --first-parent main
+log -m -p main
+log --cc -m -p main
+log -c -m -p main
+log -m --raw main
+log -m --stat main
+log -SF main
+log -S F main
+log -SF -p main
+log -SF main --max-count=0
+log -SF main --max-count=1
+log -SF main --max-count=2
+log -GF main
+log -GF -p main
+log -GF -p --pickaxe-all main
+log -IA -IB -I1 -I2 -p main
 log --decorate --all
 log --decorate=full --all
 log --decorate --clear-decorations --all
@@ -377,35 +377,35 @@ log --decorate=full --clear-decorations --all
 rev-list --parents HEAD
 rev-list --children HEAD
 
-whatchanged master
-:noellipses whatchanged master
-whatchanged -p master
-whatchanged --root master
-:noellipses whatchanged --root master
-whatchanged --root -p master
-whatchanged --patch-with-stat master
-whatchanged --root --patch-with-stat master
-whatchanged --root --patch-with-stat --summary master
-# improved by Timo's patch
-whatchanged --root -c --patch-with-stat --summary master
-# improved by Timo's patch
-whatchanged --root --cc --patch-with-stat --summary master
-whatchanged -SF master
-:noellipses whatchanged -SF master
-whatchanged -SF -p master
+whatchanged main
+:noellipses whatchanged main
+whatchanged -p main
+whatchanged --root main
+:noellipses whatchanged --root main
+whatchanged --root -p main
+whatchanged --patch-with-stat main
+whatchanged --root --patch-with-stat main
+whatchanged --root --patch-with-stat --summary main
+# improved by Timo's patch
+whatchanged --root -c --patch-with-stat --summary main
+# improved by Timo's patch
+whatchanged --root --cc --patch-with-stat --summary main
+whatchanged -SF main
+:noellipses whatchanged -SF main
+whatchanged -SF -p main
 
-log --patch-with-stat master -- dir/
-whatchanged --patch-with-stat master -- dir/
-log --patch-with-stat --summary master -- dir/
-whatchanged --patch-with-stat --summary master -- dir/
+log --patch-with-stat main -- dir/
+whatchanged --patch-with-stat main -- dir/
+log --patch-with-stat --summary main -- dir/
+whatchanged --patch-with-stat --summary main -- dir/
 
 show initial
 show --root initial
 show side
-show master
-show -c master
-show -m master
-show --first-parent master
+show main
+show -c main
+show -m main
+show --first-parent main
 show --stat side
 show --stat --summary side
 show --patch-with-stat side
@@ -414,22 +414,22 @@ show --patch-with-raw side
 show --patch-with-stat --summary side
 
 format-patch --stdout initial..side
-format-patch --stdout initial..master^
-format-patch --stdout initial..master
-format-patch --stdout --no-numbered initial..master
-format-patch --stdout --numbered initial..master
+format-patch --stdout initial..main^
+format-patch --stdout initial..main
+format-patch --stdout --no-numbered initial..main
+format-patch --stdout --numbered initial..main
 format-patch --attach --stdout initial..side
 format-patch --attach --stdout --suffix=.diff initial..side
-format-patch --attach --stdout initial..master^
-format-patch --attach --stdout initial..master
+format-patch --attach --stdout initial..main^
+format-patch --attach --stdout initial..main
 format-patch --inline --stdout initial..side
-format-patch --inline --stdout initial..master^
-format-patch --inline --stdout --numbered-files initial..master
-format-patch --inline --stdout initial..master
-format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
+format-patch --inline --stdout initial..main^
+format-patch --inline --stdout --numbered-files initial..main
+format-patch --inline --stdout initial..main
+format-patch --inline --stdout --subject-prefix=TESTCASE initial..main
 config format.subjectprefix DIFFERENT_PREFIX
-format-patch --inline --stdout initial..master^^
-format-patch --stdout --cover-letter -n initial..master^
+format-patch --inline --stdout initial..main^^
+format-patch --stdout --cover-letter -n initial..main^
 
 diff --abbrev initial..side
 diff -U initial..side
@@ -448,13 +448,13 @@ diff --name-status dir2 dir
 diff --no-index --name-status dir2 dir
 diff --no-index --name-status -- dir2 dir
 diff --no-index dir dir3
-diff master master^ side
+diff main main^ side
 # Can't use spaces...
-diff --line-prefix=abc master master^ side
-diff --dirstat master~1 master~2
+diff --line-prefix=abc main main^ side
+diff --dirstat main~1 main~2
 diff --dirstat initial rearrange
 diff --dirstat-by-file initial rearrange
-diff --dirstat --cc master~1 master
+diff --dirstat --cc main~1 main
 # No-index --abbrev and --no-abbrev
 diff --raw initial
 :noellipses diff --raw initial
@@ -482,25 +482,25 @@ test_expect_success !WITH_BREAKING_CHANGES 'whatchanged needs --i-still-use-this
 '
 
 test_expect_success 'log -m matches pure log' '
-	git log master >result &&
+	git log main >result &&
 	process_diffs result >expected &&
 	git log -m >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'log --diff-merges=on matches --diff-merges=separate' '
-	git log -p --diff-merges=separate master >result &&
+	git log -p --diff-merges=separate main >result &&
 	process_diffs result >expected &&
-	git log -p --diff-merges=on master >result &&
+	git log -p --diff-merges=on main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'log --dd matches --diff-merges=1 -p' '
-	git log --diff-merges=1 -p master >result &&
+	git log --diff-merges=1 -p main >result &&
 	process_diffs result >expected &&
-	git log --dd master >result &&
+	git log --dd main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
@@ -511,19 +511,19 @@ test_expect_success 'deny wrong log.diffMerges config' '
 '
 
 test_expect_success 'git config log.diffMerges first-parent' '
-	git log -p --diff-merges=first-parent master >result &&
+	git log -p --diff-merges=first-parent main >result &&
 	process_diffs result >expected &&
 	test_config log.diffMerges first-parent &&
-	git log -p --diff-merges=on master >result &&
+	git log -p --diff-merges=on main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'git config log.diffMerges first-parent vs -m' '
-	git log -p --diff-merges=first-parent master >result &&
+	git log -p --diff-merges=first-parent main >result &&
 	process_diffs result >expected &&
 	test_config log.diffMerges first-parent &&
-	git log -p -m master >result &&
+	git log -p -m main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
@@ -572,7 +572,7 @@ test_expect_success 'diff-tree --stdin with log formatting' '
 	Third
 	Second
 	EOF
-	git rev-list master | git diff-tree --stdin --format=%s -s >actual &&
+	git rev-list main | git diff-tree --stdin --format=%s -s >actual &&
 	test_cmp expect actual
 '
 
@@ -585,16 +585,16 @@ test_expect_success 'diff-tree --stdin with pathspec' '
 
 	dir/sub
 	EOF
-	git rev-list master^ |
+	git rev-list main^ |
 	git diff-tree -r --stdin --name-only --format=%s dir >actual &&
 	test_cmp expect actual
 '
 
 test_expect_success 'show A B ... -- <pathspec>' '
 	# side touches dir/sub, file0, and file3
-	# master^ touches dir/sub, and file1
-	# master^^ touches dir/sub, file0, and file2
-	git show --name-only --format="<%s>" side master^ master^^ -- dir >actual &&
+	# main^ touches dir/sub, and file1
+	# main^^ touches dir/sub, file0, and file2
+	git show --name-only --format="<%s>" side main^ main^^ -- dir >actual &&
 	cat >expect <<-\EOF &&
 	<Side>
 
@@ -610,7 +610,7 @@ test_expect_success 'show A B ... -- <pathspec>' '
 '
 
 test_expect_success 'diff -I<regex>: setup' '
-	git checkout master &&
+	git checkout main &&
 	test_seq 50 >file0 &&
 	git commit -m "Set up -I<regex> test file" file0 &&
 	test_seq 50 | sed -e "s/13/ten and three/" -e "/7\$/d" >file0 &&
diff --git a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_master b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_main
similarity index 86%
rename from t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_master
rename to t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_main
index 9951e3677d6..af1cf20f4ca 100644
--- a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --patch-with-stat --summary master
+$ git diff-tree --cc --patch-with-stat --summary main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_master b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_main
similarity index 89%
rename from t/t4013/diff.diff-tree_--cc_--patch-with-stat_master
rename to t/t4013/diff.diff-tree_--cc_--patch-with-stat_main
index db3c0a7b2cc..0ec60420970 100644
--- a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_master
+++ b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --patch-with-stat master
+$ git diff-tree --cc --patch-with-stat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_--shortstat_master b/t/t4013/diff.diff-tree_--cc_--shortstat_main
similarity index 65%
rename from t/t4013/diff.diff-tree_--cc_--shortstat_master
rename to t/t4013/diff.diff-tree_--cc_--shortstat_main
index a4ca42df2a4..9a4ef031973 100644
--- a/t/t4013/diff.diff-tree_--cc_--shortstat_master
+++ b/t/t4013/diff.diff-tree_--cc_--shortstat_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --shortstat master
+$ git diff-tree --cc --shortstat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  2 files changed, 5 insertions(+)
 $
diff --git a/t/t4013/diff.diff-tree_-c_--stat_--summary_master b/t/t4013/diff.diff-tree_--cc_--stat_--summary_main
similarity index 71%
rename from t/t4013/diff.diff-tree_-c_--stat_--summary_master
rename to t/t4013/diff.diff-tree_--cc_--stat_--summary_main
index 81c3021541b..9db08a4aa96 100644
--- a/t/t4013/diff.diff-tree_-c_--stat_--summary_master
+++ b/t/t4013/diff.diff-tree_--cc_--stat_--summary_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --stat --summary master
+$ git diff-tree --cc --stat --summary main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_-c_--stat_master b/t/t4013/diff.diff-tree_--cc_--stat_main
similarity index 76%
rename from t/t4013/diff.diff-tree_-c_--stat_master
rename to t/t4013/diff.diff-tree_--cc_--stat_main
index 89d59b15480..7ecc67a524e 100644
--- a/t/t4013/diff.diff-tree_-c_--stat_master
+++ b/t/t4013/diff.diff-tree_--cc_--stat_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --stat master
+$ git diff-tree --cc --stat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_master b/t/t4013/diff.diff-tree_--cc_main
similarity index 91%
rename from t/t4013/diff.diff-tree_--cc_master
rename to t/t4013/diff.diff-tree_--cc_main
index 5ecb4e14ae4..1a962856ad4 100644
--- a/t/t4013/diff.diff-tree_--cc_master
+++ b/t/t4013/diff.diff-tree_--cc_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc master
+$ git diff-tree --cc main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 diff --cc dir/sub
 index cead32e,7289e35..992913c
diff --git a/t/t4013/diff.diff-tree_-c_--abbrev_master b/t/t4013/diff.diff-tree_-c_--abbrev_main
similarity index 83%
rename from t/t4013/diff.diff-tree_-c_--abbrev_master
rename to t/t4013/diff.diff-tree_-c_--abbrev_main
index b8e4aa25307..039d127cf24 100644
--- a/t/t4013/diff.diff-tree_-c_--abbrev_master
+++ b/t/t4013/diff.diff-tree_-c_--abbrev_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --abbrev master
+$ git diff-tree -c --abbrev main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e... 7289e35... 992913c... MM	dir/sub
 ::100644 100644 100644 b414108... f4615da... 10a8a9f... MM	file0
diff --git a/t/t4013/diff.diff-tree_--cc_--stat_--summary_master b/t/t4013/diff.diff-tree_-c_--stat_--summary_main
similarity index 70%
rename from t/t4013/diff.diff-tree_--cc_--stat_--summary_master
rename to t/t4013/diff.diff-tree_-c_--stat_--summary_main
index d019867dd94..05a8d16ba70 100644
--- a/t/t4013/diff.diff-tree_--cc_--stat_--summary_master
+++ b/t/t4013/diff.diff-tree_-c_--stat_--summary_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --stat --summary master
+$ git diff-tree -c --stat --summary main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_--stat_master b/t/t4013/diff.diff-tree_-c_--stat_main
similarity index 75%
rename from t/t4013/diff.diff-tree_--cc_--stat_master
rename to t/t4013/diff.diff-tree_-c_--stat_main
index 40b91796b34..61d9f450dfd 100644
--- a/t/t4013/diff.diff-tree_--cc_--stat_master
+++ b/t/t4013/diff.diff-tree_-c_--stat_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --stat master
+$ git diff-tree -c --stat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_-c_master b/t/t4013/diff.diff-tree_-c_main
similarity index 93%
rename from t/t4013/diff.diff-tree_-c_master
rename to t/t4013/diff.diff-tree_-c_main
index e2d2bb26114..a84e1185cf5 100644
--- a/t/t4013/diff.diff-tree_-c_master
+++ b/t/t4013/diff.diff-tree_-c_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c master
+$ git diff-tree -c main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e925b1420c84c14cbf7cf755e7e45af8ad 7289e35bff32727c08dda207511bec138fdb9ea5 992913c5aa0a5476d10c49ed0f21fc0c6d1aedf3 MM	dir/sub
 ::100644 100644 100644 b414108e81e5091fe0974a1858b4d0d22b107f70 f4615da674c09df322d6ba8d6b21ecfb1b1ba510 10a8a9f3657f91a156b9f0184ed79a20adef9f7f MM	file0
diff --git a/t/t4013/diff.diff-tree_-m_master b/t/t4013/diff.diff-tree_-m_main
similarity index 96%
rename from t/t4013/diff.diff-tree_-m_master
rename to t/t4013/diff.diff-tree_-m_main
index 6d0a2207fb3..5da1f7f5251 100644
--- a/t/t4013/diff.diff-tree_-m_master
+++ b/t/t4013/diff.diff-tree_-m_main
@@ -1,4 +1,4 @@
-$ git diff-tree -m master
+$ git diff-tree -m main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 :040000 040000 65f5c9dd60ce3b2b3324b618ac7accf8d912c113 0564e026437809817a64fff393079714b6dd4628 M	dir
 :100644 100644 b414108e81e5091fe0974a1858b4d0d22b107f70 10a8a9f3657f91a156b9f0184ed79a20adef9f7f M	file0
diff --git a/t/t4013/diff.diff-tree_-p_-m_master b/t/t4013/diff.diff-tree_-p_-m_main
similarity index 97%
rename from t/t4013/diff.diff-tree_-p_-m_master
rename to t/t4013/diff.diff-tree_-p_-m_main
index b60bea039d9..29c9fc20b8b 100644
--- a/t/t4013/diff.diff-tree_-p_-m_master
+++ b/t/t4013/diff.diff-tree_-p_-m_main
@@ -1,4 +1,4 @@
-$ git diff-tree -p -m master
+$ git diff-tree -p -m main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 diff --git a/dir/sub b/dir/sub
 index cead32e..992913c 100644
diff --git a/t/t4013/diff.diff-tree_-p_main b/t/t4013/diff.diff-tree_-p_main
new file mode 100644
index 00000000000..c658062422e
--- /dev/null
+++ b/t/t4013/diff.diff-tree_-p_main
@@ -0,0 +1,2 @@
+$ git diff-tree -p main
+$
diff --git a/t/t4013/diff.diff-tree_-p_master b/t/t4013/diff.diff-tree_-p_master
deleted file mode 100644
index b182875fb2f..00000000000
--- a/t/t4013/diff.diff-tree_-p_master
+++ /dev/null
@@ -1,2 +0,0 @@
-$ git diff-tree -p master
-$
diff --git a/t/t4013/diff.diff-tree_main b/t/t4013/diff.diff-tree_main
new file mode 100644
index 00000000000..dc5b9fdeb6e
--- /dev/null
+++ b/t/t4013/diff.diff-tree_main
@@ -0,0 +1,2 @@
+$ git diff-tree main
+$
diff --git a/t/t4013/diff.diff-tree_master b/t/t4013/diff.diff-tree_master
deleted file mode 100644
index fe9226f8a12..00000000000
--- a/t/t4013/diff.diff-tree_master
+++ /dev/null
@@ -1,2 +0,0 @@
-$ git diff-tree master
-$
diff --git a/t/t4013/diff.diff_--dirstat_--cc_main~1_main b/t/t4013/diff.diff_--dirstat_--cc_main~1_main
new file mode 100644
index 00000000000..168a357a02e
--- /dev/null
+++ b/t/t4013/diff.diff_--dirstat_--cc_main~1_main
@@ -0,0 +1,3 @@
+$ git diff --dirstat --cc main~1 main
+  40.0% dir/
+$
diff --git a/t/t4013/diff.diff_--dirstat_--cc_master~1_master b/t/t4013/diff.diff_--dirstat_--cc_master~1_master
deleted file mode 100644
index fba4e34175e..00000000000
--- a/t/t4013/diff.diff_--dirstat_--cc_master~1_master
+++ /dev/null
@@ -1,3 +0,0 @@
-$ git diff --dirstat --cc master~1 master
-  40.0% dir/
-$
diff --git a/t/t4013/diff.diff_--dirstat_main~1_main~2 b/t/t4013/diff.diff_--dirstat_main~1_main~2
new file mode 100644
index 00000000000..68097337089
--- /dev/null
+++ b/t/t4013/diff.diff_--dirstat_main~1_main~2
@@ -0,0 +1,3 @@
+$ git diff --dirstat main~1 main~2
+  40.0% dir/
+$
diff --git a/t/t4013/diff.diff_--dirstat_master~1_master~2 b/t/t4013/diff.diff_--dirstat_master~1_master~2
deleted file mode 100644
index b672e1ca63d..00000000000
--- a/t/t4013/diff.diff_--dirstat_master~1_master~2
+++ /dev/null
@@ -1,3 +0,0 @@
-$ git diff --dirstat master~1 master~2
-  40.0% dir/
-$
diff --git a/t/t4013/diff.diff_--line-prefix=abc_master_master^_side b/t/t4013/diff.diff_--line-prefix=abc_main_main^_side
similarity index 87%
rename from t/t4013/diff.diff_--line-prefix=abc_master_master^_side
rename to t/t4013/diff.diff_--line-prefix=abc_main_main^_side
index 99f91e7f0e3..67a2145a365 100644
--- a/t/t4013/diff.diff_--line-prefix=abc_master_master^_side
+++ b/t/t4013/diff.diff_--line-prefix=abc_main_main^_side
@@ -1,4 +1,4 @@
-$ git diff --line-prefix=abc master master^ side
+$ git diff --line-prefix=abc main main^ side
 abcdiff --cc dir/sub
 abcindex cead32e,7289e35..992913c
 abc--- a/dir/sub
diff --git a/t/t4013/diff.diff_master_master^_side b/t/t4013/diff.diff_main_main^_side
similarity index 89%
rename from t/t4013/diff.diff_master_master^_side
rename to t/t4013/diff.diff_main_main^_side
index 50ec9cadd61..ab81ec9e47b 100644
--- a/t/t4013/diff.diff_master_master^_side
+++ b/t/t4013/diff.diff_main_main^_side
@@ -1,4 +1,4 @@
-$ git diff master master^ side
+$ git diff main main^ side
 diff --cc dir/sub
 index cead32e,7289e35..992913c
 --- a/dir/sub
diff --git a/t/t4013/diff.format-patch_--attach_--stdout_initial..master b/t/t4013/diff.format-patch_--attach_--stdout_initial..main
similarity index 98%
rename from t/t4013/diff.format-patch_--attach_--stdout_initial..master
rename to t/t4013/diff.format-patch_--attach_--stdout_initial..main
index 52fedc179e5..9f56380350d 100644
--- a/t/t4013/diff.format-patch_--attach_--stdout_initial..master
+++ b/t/t4013/diff.format-patch_--attach_--stdout_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --attach --stdout initial..master
+$ git format-patch --attach --stdout initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--attach_--stdout_initial..master^ b/t/t4013/diff.format-patch_--attach_--stdout_initial..main^
similarity index 97%
rename from t/t4013/diff.format-patch_--attach_--stdout_initial..master^
rename to t/t4013/diff.format-patch_--attach_--stdout_initial..main^
index 1c3cde251b5..80132ea99eb 100644
--- a/t/t4013/diff.format-patch_--attach_--stdout_initial..master^
+++ b/t/t4013/diff.format-patch_--attach_--stdout_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --attach --stdout initial..master^
+$ git format-patch --attach --stdout initial..main^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..main
similarity index 99%
rename from t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..master
rename to t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..main
index 02c4db7ec58..8e889090fbe 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..master
+++ b/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout --numbered-files initial..master
+$ git format-patch --inline --stdout --numbered-files initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main
similarity index 99%
rename from t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master
rename to t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main
index c7677c5951c..d7d2b12d155 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master
+++ b/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
+$ git format-patch --inline --stdout --subject-prefix=TESTCASE initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_initial..main
similarity index 98%
rename from t/t4013/diff.format-patch_--inline_--stdout_initial..master
rename to t/t4013/diff.format-patch_--inline_--stdout_initial..main
index 5b3e34e2c0c..c49c423f82f 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_initial..master
+++ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout initial..master
+$ git format-patch --inline --stdout initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^
similarity index 97%
rename from t/t4013/diff.format-patch_--inline_--stdout_initial..master^
rename to t/t4013/diff.format-patch_--inline_--stdout_initial..main^
index d13f8a81280..8669dbfe6c9 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^
+++ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout initial..master^
+$ git format-patch --inline --stdout initial..main^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^^ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^^
similarity index 95%
rename from t/t4013/diff.format-patch_--inline_--stdout_initial..master^^
rename to t/t4013/diff.format-patch_--inline_--stdout_initial..main^^
index caec5537de3..b749be58b0a 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^^
+++ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^^
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout initial..master^^
+$ git format-patch --inline --stdout initial..main^^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..main^
similarity index 96%
rename from t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
rename to t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..main^
index 244d964fc67..567f2221982 100644
--- a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
+++ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --stdout --cover-letter -n initial..master^
+$ git format-patch --stdout --cover-letter -n initial..main^
 From 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Mon Sep 17 00:00:00 2001
 From: C O Mitter <committer@example.com>
 Date: Mon, 26 Jun 2006 00:06:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..master b/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..main
similarity index 97%
rename from t/t4013/diff.format-patch_--stdout_--no-numbered_initial..master
rename to t/t4013/diff.format-patch_--stdout_--no-numbered_initial..main
index bfc287a147d..195b62ea4f5 100644
--- a/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..master
+++ b/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --stdout --no-numbered initial..master
+$ git format-patch --stdout --no-numbered initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_--numbered_initial..master b/t/t4013/diff.format-patch_--stdout_--numbered_initial..main
similarity index 97%
rename from t/t4013/diff.format-patch_--stdout_--numbered_initial..master
rename to t/t4013/diff.format-patch_--stdout_--numbered_initial..main
index 568f6f584e6..0678a38515d 100644
--- a/t/t4013/diff.format-patch_--stdout_--numbered_initial..master
+++ b/t/t4013/diff.format-patch_--stdout_--numbered_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --stdout --numbered initial..master
+$ git format-patch --stdout --numbered initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_initial..master b/t/t4013/diff.format-patch_--stdout_initial..main
similarity index 97%
rename from t/t4013/diff.format-patch_--stdout_initial..master
rename to t/t4013/diff.format-patch_--stdout_initial..main
index 5f0352f9f70..b4a6302e7cb 100644
--- a/t/t4013/diff.format-patch_--stdout_initial..master
+++ b/t/t4013/diff.format-patch_--stdout_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --stdout initial..master
+$ git format-patch --stdout initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_initial..master^ b/t/t4013/diff.format-patch_--stdout_initial..main^
similarity index 96%
rename from t/t4013/diff.format-patch_--stdout_initial..master^
rename to t/t4013/diff.format-patch_--stdout_initial..main^
index 2ae454d8073..36b32215826 100644
--- a/t/t4013/diff.format-patch_--stdout_initial..master^
+++ b/t/t4013/diff.format-patch_--stdout_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --stdout initial..master^
+$ git format-patch --stdout initial..main^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.log_-c_-m_-p_master b/t/t4013/diff.log_--cc_-m_-p_main
similarity index 99%
rename from t/t4013/diff.log_-c_-m_-p_master
rename to t/t4013/diff.log_--cc_-m_-p_main
index b660f3d5f28..f32746ea3ed 100644
--- a/t/t4013/diff.log_-c_-m_-p_master
+++ b/t/t4013/diff.log_--cc_-m_-p_main
@@ -1,4 +1,4 @@
-$ git log -c -m -p master
+$ git log --cc -m -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--decorate=full_--all b/t/t4013/diff.log_--decorate=full_--all
index 6b0b334a5d6..c099399525a 100644
--- a/t/t4013/diff.log_--decorate=full_--all
+++ b/t/t4013/diff.log_--decorate=full_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate=full_--clear-decorations_--all b/t/t4013/diff.log_--decorate=full_--clear-decorations_--all
index 1c030a6554e..c43684e5361 100644
--- a/t/t4013/diff.log_--decorate=full_--clear-decorations_--all
+++ b/t/t4013/diff.log_--decorate=full_--clear-decorations_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate=full_--decorate-all_--all b/t/t4013/diff.log_--decorate=full_--decorate-all_--all
index d6e79287846..48dca61681c 100644
--- a/t/t4013/diff.log_--decorate=full_--decorate-all_--all
+++ b/t/t4013/diff.log_--decorate=full_--decorate-all_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate_--all b/t/t4013/diff.log_--decorate_--all
index c7df1f58141..8bbf891f658 100644
--- a/t/t4013/diff.log_--decorate_--all
+++ b/t/t4013/diff.log_--decorate_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate_--clear-decorations_--all b/t/t4013/diff.log_--decorate_--clear-decorations_--all
index 88be82cce31..86b1353f514 100644
--- a/t/t4013/diff.log_--decorate_--clear-decorations_--all
+++ b/t/t4013/diff.log_--decorate_--clear-decorations_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate_--decorate-all_--all b/t/t4013/diff.log_--decorate_--decorate-all_--all
index 5d22618bb60..59fb17bfc54 100644
--- a/t/t4013/diff.log_--decorate_--decorate-all_--all
+++ b/t/t4013/diff.log_--decorate_--decorate-all_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--diff-merges=first-parent_master b/t/t4013/diff.log_--diff-merges=first-parent_main
similarity index 95%
rename from t/t4013/diff.log_--diff-merges=first-parent_master
rename to t/t4013/diff.log_--diff-merges=first-parent_main
index fa63a557dd1..bacee621e54 100644
--- a/t/t4013/diff.log_--diff-merges=first-parent_master
+++ b/t/t4013/diff.log_--diff-merges=first-parent_main
@@ -1,4 +1,4 @@
-$ git log --diff-merges=first-parent master
+$ git log --diff-merges=first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_master b/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_main
similarity index 95%
rename from t/t4013/diff.log_--no-diff-merges_-p_--first-parent_master
rename to t/t4013/diff.log_--diff-merges=off_-p_--first-parent_main
index 597002232e5..fe180fda3be 100644
--- a/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_master
+++ b/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log --no-diff-merges -p --first-parent master
+$ git log --diff-merges=off -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_master b/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_main
similarity index 95%
rename from t/t4013/diff.log_--first-parent_--diff-merges=off_-p_master
rename to t/t4013/diff.log_--first-parent_--diff-merges=off_-p_main
index 5d7461a167e..dca62d4e608 100644
--- a/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_master
+++ b/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_main
@@ -1,4 +1,4 @@
-$ git log --first-parent --diff-merges=off -p master
+$ git log --first-parent --diff-merges=off -p main
 commit 80e25ffa65bcdbe82ef654b4d06dbbde7945c37f
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_master b/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_main
similarity index 95%
rename from t/t4013/diff.log_--diff-merges=off_-p_--first-parent_master
rename to t/t4013/diff.log_--no-diff-merges_-p_--first-parent_main
index 194e893c94f..0b541180887 100644
--- a/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_master
+++ b/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log --diff-merges=off -p --first-parent master
+$ git log --no-diff-merges -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--patch-with-stat_--summary_master_--_dir_ b/t/t4013/diff.log_--patch-with-stat_--summary_main_--_dir_
similarity index 96%
rename from t/t4013/diff.log_--patch-with-stat_--summary_master_--_dir_
rename to t/t4013/diff.log_--patch-with-stat_--summary_main_--_dir_
index a18f1472a9a..3ed46cc8672 100644
--- a/t/t4013/diff.log_--patch-with-stat_--summary_master_--_dir_
+++ b/t/t4013/diff.log_--patch-with-stat_--summary_main_--_dir_
@@ -1,4 +1,4 @@
-$ git log --patch-with-stat --summary master -- dir/
+$ git log --patch-with-stat --summary main -- dir/
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--patch-with-stat_master b/t/t4013/diff.log_--patch-with-stat_main
similarity index 98%
rename from t/t4013/diff.log_--patch-with-stat_master
rename to t/t4013/diff.log_--patch-with-stat_main
index ae425c46722..2e12b557cb7 100644
--- a/t/t4013/diff.log_--patch-with-stat_master
+++ b/t/t4013/diff.log_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git log --patch-with-stat master
+$ git log --patch-with-stat main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--patch-with-stat_master_--_dir_ b/t/t4013/diff.log_--patch-with-stat_main_--_dir_
similarity index 96%
rename from t/t4013/diff.log_--patch-with-stat_master_--_dir_
rename to t/t4013/diff.log_--patch-with-stat_main_--_dir_
index d5207cadf44..d511ea7f6bf 100644
--- a/t/t4013/diff.log_--patch-with-stat_master_--_dir_
+++ b/t/t4013/diff.log_--patch-with-stat_main_--_dir_
@@ -1,4 +1,4 @@
-$ git log --patch-with-stat master -- dir/
+$ git log --patch-with-stat main -- dir/
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_master b/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_main
similarity index 98%
rename from t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_master
rename to t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_main
index 0fc1e8cd71f..3cfd0e64229 100644
--- a/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git log --root --cc --patch-with-stat --summary master
+$ git log --root --cc --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_--patch-with-stat_--summary_master b/t/t4013/diff.log_--root_--patch-with-stat_--summary_main
similarity index 98%
rename from t/t4013/diff.log_--root_--patch-with-stat_--summary_master
rename to t/t4013/diff.log_--root_--patch-with-stat_--summary_main
index dffc09dde9e..9f4d6dfa44e 100644
--- a/t/t4013/diff.log_--root_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.log_--root_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git log --root --patch-with-stat --summary master
+$ git log --root --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_--patch-with-stat_master b/t/t4013/diff.log_--root_--patch-with-stat_main
similarity index 98%
rename from t/t4013/diff.log_--root_--patch-with-stat_master
rename to t/t4013/diff.log_--root_--patch-with-stat_main
index 55aa98012de..0d69ae2e11b 100644
--- a/t/t4013/diff.log_--root_--patch-with-stat_master
+++ b/t/t4013/diff.log_--root_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git log --root --patch-with-stat master
+$ git log --root --patch-with-stat main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_master b/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_main
similarity index 98%
rename from t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_master
rename to t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_main
index 019d85f7de6..1b71add9dea 100644
--- a/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git log --root -c --patch-with-stat --summary master
+$ git log --root -c --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_-p_master b/t/t4013/diff.log_--root_-p_main
similarity index 98%
rename from t/t4013/diff.log_--root_-p_master
rename to t/t4013/diff.log_--root_-p_main
index b42c334439b..04581296ed5 100644
--- a/t/t4013/diff.log_--root_-p_master
+++ b/t/t4013/diff.log_--root_-p_main
@@ -1,4 +1,4 @@
-$ git log --root -p master
+$ git log --root -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_master b/t/t4013/diff.log_--root_main
similarity index 96%
rename from t/t4013/diff.log_--root_master
rename to t/t4013/diff.log_--root_main
index e8f46159da1..d5e90fd6b48 100644
--- a/t/t4013/diff.log_--root_master
+++ b/t/t4013/diff.log_--root_main
@@ -1,4 +1,4 @@
-$ git log --root master
+$ git log --root main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-GF_-p_--pickaxe-all_master b/t/t4013/diff.log_-GF_-p_--pickaxe-all_main
similarity index 90%
rename from t/t4013/diff.log_-GF_-p_--pickaxe-all_master
rename to t/t4013/diff.log_-GF_-p_--pickaxe-all_main
index d36f88098b0..1f7a497c2d7 100644
--- a/t/t4013/diff.log_-GF_-p_--pickaxe-all_master
+++ b/t/t4013/diff.log_-GF_-p_--pickaxe-all_main
@@ -1,4 +1,4 @@
-$ git log -GF -p --pickaxe-all master
+$ git log -GF -p --pickaxe-all main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-GF_-p_master b/t/t4013/diff.log_-GF_-p_main
similarity index 91%
rename from t/t4013/diff.log_-GF_-p_master
rename to t/t4013/diff.log_-GF_-p_main
index 9d93f2c23a8..c80dda41e9f 100644
--- a/t/t4013/diff.log_-GF_-p_master
+++ b/t/t4013/diff.log_-GF_-p_main
@@ -1,4 +1,4 @@
-$ git log -GF -p master
+$ git log -GF -p main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-SF_master b/t/t4013/diff.log_-GF_main
similarity index 86%
rename from t/t4013/diff.log_-SF_master
rename to t/t4013/diff.log_-GF_main
index c1599f2f520..b94a7f78398 100644
--- a/t/t4013/diff.log_-SF_master
+++ b/t/t4013/diff.log_-GF_main
@@ -1,4 +1,4 @@
-$ git log -SF master
+$ git log -GF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_master b/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_main
similarity index 97%
rename from t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_master
rename to t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_main
index 929f35a05b4..67e26b4e547 100644
--- a/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_master
+++ b/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_main
@@ -1,4 +1,4 @@
-$ git log -IA -IB -I1 -I2 -p master
+$ git log -IA -IB -I1 -I2 -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-SF_-p_master b/t/t4013/diff.log_-SF_-p_main
similarity index 91%
rename from t/t4013/diff.log_-SF_-p_master
rename to t/t4013/diff.log_-SF_-p_main
index 5e324389729..fa82ac14908 100644
--- a/t/t4013/diff.log_-SF_-p_master
+++ b/t/t4013/diff.log_-SF_-p_main
@@ -1,4 +1,4 @@
-$ git log -SF -p master
+$ git log -SF -p main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-GF_master b/t/t4013/diff.log_-SF_main
similarity index 86%
rename from t/t4013/diff.log_-GF_master
rename to t/t4013/diff.log_-SF_main
index 4c6708d2d0d..dbf770db49d 100644
--- a/t/t4013/diff.log_-GF_master
+++ b/t/t4013/diff.log_-SF_main
@@ -1,4 +1,4 @@
-$ git log -GF master
+$ git log -SF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-SF_main_--max-count=0 b/t/t4013/diff.log_-SF_main_--max-count=0
new file mode 100644
index 00000000000..683b17eb998
--- /dev/null
+++ b/t/t4013/diff.log_-SF_main_--max-count=0
@@ -0,0 +1,2 @@
+$ git log -SF main --max-count=0
+$
diff --git a/t/t4013/diff.log_-SF_master_--max-count=2 b/t/t4013/diff.log_-SF_main_--max-count=1
similarity index 79%
rename from t/t4013/diff.log_-SF_master_--max-count=2
rename to t/t4013/diff.log_-SF_main_--max-count=1
index a6c55fd4822..2102426f8cc 100644
--- a/t/t4013/diff.log_-SF_master_--max-count=2
+++ b/t/t4013/diff.log_-SF_main_--max-count=1
@@ -1,4 +1,4 @@
-$ git log -SF master --max-count=2
+$ git log -SF main --max-count=1
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-SF_main_--max-count=2 b/t/t4013/diff.log_-SF_main_--max-count=2
new file mode 100644
index 00000000000..23e12a4cbbd
--- /dev/null
+++ b/t/t4013/diff.log_-SF_main_--max-count=2
@@ -0,0 +1,7 @@
+$ git log -SF main --max-count=2
+commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
+Author: A U Thor <author@example.com>
+Date:   Mon Jun 26 00:02:00 2006 +0000
+
+    Third
+$
diff --git a/t/t4013/diff.log_-SF_master_--max-count=0 b/t/t4013/diff.log_-SF_master_--max-count=0
deleted file mode 100644
index c1fc6c87317..00000000000
--- a/t/t4013/diff.log_-SF_master_--max-count=0
+++ /dev/null
@@ -1,2 +0,0 @@
-$ git log -SF master --max-count=0
-$
diff --git a/t/t4013/diff.log_-SF_master_--max-count=1 b/t/t4013/diff.log_-SF_master_--max-count=1
deleted file mode 100644
index c981a038147..00000000000
--- a/t/t4013/diff.log_-SF_master_--max-count=1
+++ /dev/null
@@ -1,7 +0,0 @@
-$ git log -SF master --max-count=1
-commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
-Author: A U Thor <author@example.com>
-Date:   Mon Jun 26 00:02:00 2006 +0000
-
-    Third
-$
diff --git a/t/t4013/diff.log_-S_F_master b/t/t4013/diff.log_-S_F_main
similarity index 86%
rename from t/t4013/diff.log_-S_F_master
rename to t/t4013/diff.log_-S_F_main
index 978d2b41188..a75a42e1433 100644
--- a/t/t4013/diff.log_-S_F_master
+++ b/t/t4013/diff.log_-S_F_main
@@ -1,4 +1,4 @@
-$ git log -S F master
+$ git log -S F main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_--cc_-m_-p_master b/t/t4013/diff.log_-c_-m_-p_main
similarity index 99%
rename from t/t4013/diff.log_--cc_-m_-p_master
rename to t/t4013/diff.log_-c_-m_-p_main
index 7c217cf348c..427f7324568 100644
--- a/t/t4013/diff.log_--cc_-m_-p_master
+++ b/t/t4013/diff.log_-c_-m_-p_main
@@ -1,4 +1,4 @@
-$ git log --cc -m -p master
+$ git log -c -m -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_--raw_master b/t/t4013/diff.log_-m_--raw_main
similarity index 98%
rename from t/t4013/diff.log_-m_--raw_master
rename to t/t4013/diff.log_-m_--raw_main
index cd2ecc46283..31d9bc77073 100644
--- a/t/t4013/diff.log_-m_--raw_master
+++ b/t/t4013/diff.log_-m_--raw_main
@@ -1,4 +1,4 @@
-$ git log -m --raw master
+$ git log -m --raw main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_--stat_master b/t/t4013/diff.log_-m_--stat_main
similarity index 98%
rename from t/t4013/diff.log_-m_--stat_master
rename to t/t4013/diff.log_-m_--stat_main
index c7db084fd90..4c8909229bf 100644
--- a/t/t4013/diff.log_-m_--stat_master
+++ b/t/t4013/diff.log_-m_--stat_main
@@ -1,4 +1,4 @@
-$ git log -m --stat master
+$ git log -m --stat main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_-p_--first-parent_master b/t/t4013/diff.log_-m_-p_--first-parent_main
similarity index 97%
rename from t/t4013/diff.log_-m_-p_--first-parent_master
rename to t/t4013/diff.log_-m_-p_--first-parent_main
index 7a0073f5296..459e10786b9 100644
--- a/t/t4013/diff.log_-m_-p_--first-parent_master
+++ b/t/t4013/diff.log_-m_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log -m -p --first-parent master
+$ git log -m -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_-p_master b/t/t4013/diff.log_-m_-p_main
similarity index 99%
rename from t/t4013/diff.log_-m_-p_master
rename to t/t4013/diff.log_-m_-p_main
index 9ca62a01ed2..07453c56983 100644
--- a/t/t4013/diff.log_-m_-p_master
+++ b/t/t4013/diff.log_-m_-p_main
@@ -1,4 +1,4 @@
-$ git log -m -p master
+$ git log -m -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-p_--diff-merges=first-parent_master b/t/t4013/diff.log_-p_--diff-merges=first-parent_main
similarity index 97%
rename from t/t4013/diff.log_-p_--diff-merges=first-parent_master
rename to t/t4013/diff.log_-p_--diff-merges=first-parent_main
index 9538a275112..264a2f373ec 100644
--- a/t/t4013/diff.log_-p_--diff-merges=first-parent_master
+++ b/t/t4013/diff.log_-p_--diff-merges=first-parent_main
@@ -1,4 +1,4 @@
-$ git log -p --diff-merges=first-parent master
+$ git log -p --diff-merges=first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-p_--first-parent_master b/t/t4013/diff.log_-p_--first-parent_main
similarity index 97%
rename from t/t4013/diff.log_-p_--first-parent_master
rename to t/t4013/diff.log_-p_--first-parent_main
index 28840ebea1e..247980817b5 100644
--- a/t/t4013/diff.log_-p_--first-parent_master
+++ b/t/t4013/diff.log_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log -p --first-parent master
+$ git log -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-p_master b/t/t4013/diff.log_-p_main
similarity index 98%
rename from t/t4013/diff.log_-p_master
rename to t/t4013/diff.log_-p_main
index bf1326dc366..c82b4dbf165 100644
--- a/t/t4013/diff.log_-p_master
+++ b/t/t4013/diff.log_-p_main
@@ -1,4 +1,4 @@
-$ git log -p master
+$ git log -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_master b/t/t4013/diff.log_main
similarity index 97%
rename from t/t4013/diff.log_master
rename to t/t4013/diff.log_main
index a8f6ce5abd6..50401f73e6e 100644
--- a/t/t4013/diff.log_master
+++ b/t/t4013/diff.log_main
@@ -1,4 +1,4 @@
-$ git log master
+$ git log main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_master b/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_main
similarity index 81%
rename from t/t4013/diff.noellipses-diff-tree_-c_--abbrev_master
rename to t/t4013/diff.noellipses-diff-tree_-c_--abbrev_main
index bb80f013b37..3aa1f80af35 100644
--- a/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_master
+++ b/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --abbrev master
+$ git diff-tree -c --abbrev main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e 7289e35 992913c MM	dir/sub
 ::100644 100644 100644 b414108 f4615da 10a8a9f MM	file0
diff --git a/t/t4013/diff.noellipses-whatchanged_--root_master b/t/t4013/diff.noellipses-whatchanged_--root_main
similarity index 96%
rename from t/t4013/diff.noellipses-whatchanged_--root_master
rename to t/t4013/diff.noellipses-whatchanged_--root_main
index c2cfd4e7292..2bec0558356 100644
--- a/t/t4013/diff.noellipses-whatchanged_--root_master
+++ b/t/t4013/diff.noellipses-whatchanged_--root_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root master
+$ git whatchanged --root main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.noellipses-whatchanged_-SF_master b/t/t4013/diff.noellipses-whatchanged_-SF_main
similarity index 86%
rename from t/t4013/diff.noellipses-whatchanged_-SF_master
rename to t/t4013/diff.noellipses-whatchanged_-SF_main
index b36ce5886e0..0c1476d19eb 100644
--- a/t/t4013/diff.noellipses-whatchanged_-SF_master
+++ b/t/t4013/diff.noellipses-whatchanged_-SF_main
@@ -1,4 +1,4 @@
-$ git whatchanged -SF master
+$ git whatchanged -SF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.noellipses-whatchanged_master b/t/t4013/diff.noellipses-whatchanged_main
similarity index 96%
rename from t/t4013/diff.noellipses-whatchanged_master
rename to t/t4013/diff.noellipses-whatchanged_main
index 55e500f2edb..c48d2851aab 100644
--- a/t/t4013/diff.noellipses-whatchanged_master
+++ b/t/t4013/diff.noellipses-whatchanged_main
@@ -1,4 +1,4 @@
-$ git whatchanged master
+$ git whatchanged main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.show_--first-parent_master b/t/t4013/diff.show_--first-parent_main
similarity index 92%
rename from t/t4013/diff.show_--first-parent_master
rename to t/t4013/diff.show_--first-parent_main
index 3dcbe473a0d..480502d65c2 100644
--- a/t/t4013/diff.show_--first-parent_master
+++ b/t/t4013/diff.show_--first-parent_main
@@ -1,4 +1,4 @@
-$ git show --first-parent master
+$ git show --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.show_-c_master b/t/t4013/diff.show_-c_main
similarity index 95%
rename from t/t4013/diff.show_-c_master
rename to t/t4013/diff.show_-c_main
index 81aba8da96c..74ef8bc96b2 100644
--- a/t/t4013/diff.show_-c_master
+++ b/t/t4013/diff.show_-c_main
@@ -1,4 +1,4 @@
-$ git show -c master
+$ git show -c main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.show_-m_master b/t/t4013/diff.show_-m_main
similarity index 98%
rename from t/t4013/diff.show_-m_master
rename to t/t4013/diff.show_-m_main
index 4ea2ee453d5..8fd56736d97 100644
--- a/t/t4013/diff.show_-m_master
+++ b/t/t4013/diff.show_-m_main
@@ -1,4 +1,4 @@
-$ git show -m master
+$ git show -m main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.show_master b/t/t4013/diff.show_main
similarity index 96%
rename from t/t4013/diff.show_master
rename to t/t4013/diff.show_main
index fb08ce0e46d..630b52a95ef 100644
--- a/t/t4013/diff.show_master
+++ b/t/t4013/diff.show_main
@@ -1,4 +1,4 @@
-$ git show master
+$ git show main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.whatchanged_--patch-with-stat_--summary_master_--_dir_ b/t/t4013/diff.whatchanged_--patch-with-stat_--summary_main_--_dir_
similarity index 94%
rename from t/t4013/diff.whatchanged_--patch-with-stat_--summary_master_--_dir_
rename to t/t4013/diff.whatchanged_--patch-with-stat_--summary_main_--_dir_
index c8b6af2f438..ce0754d556e 100644
--- a/t/t4013/diff.whatchanged_--patch-with-stat_--summary_master_--_dir_
+++ b/t/t4013/diff.whatchanged_--patch-with-stat_--summary_main_--_dir_
@@ -1,4 +1,4 @@
-$ git whatchanged --patch-with-stat --summary master -- dir/
+$ git whatchanged --patch-with-stat --summary main -- dir/
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--patch-with-stat_master b/t/t4013/diff.whatchanged_--patch-with-stat_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--patch-with-stat_master
rename to t/t4013/diff.whatchanged_--patch-with-stat_main
index 1ac431ba921..aabccf39a53 100644
--- a/t/t4013/diff.whatchanged_--patch-with-stat_master
+++ b/t/t4013/diff.whatchanged_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git whatchanged --patch-with-stat master
+$ git whatchanged --patch-with-stat main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--patch-with-stat_master_--_dir_ b/t/t4013/diff.whatchanged_--patch-with-stat_main_--_dir_
similarity index 94%
rename from t/t4013/diff.whatchanged_--patch-with-stat_master_--_dir_
rename to t/t4013/diff.whatchanged_--patch-with-stat_main_--_dir_
index b30c28588f9..c05a0e81496 100644
--- a/t/t4013/diff.whatchanged_--patch-with-stat_master_--_dir_
+++ b/t/t4013/diff.whatchanged_--patch-with-stat_main_--_dir_
@@ -1,4 +1,4 @@
-$ git whatchanged --patch-with-stat master -- dir/
+$ git whatchanged --patch-with-stat main -- dir/
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master b/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master
rename to t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main
index 30aae7817b9..1f74b1b5487 100644
--- a/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root --cc --patch-with-stat --summary master
+$ git whatchanged --root --cc --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_master b/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_master
rename to t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_main
index db90e515254..80d98121511 100644
--- a/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root --patch-with-stat --summary master
+$ git whatchanged --root --patch-with-stat --summary main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_--patch-with-stat_master b/t/t4013/diff.whatchanged_--root_--patch-with-stat_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_--patch-with-stat_master
rename to t/t4013/diff.whatchanged_--root_--patch-with-stat_main
index 9a6cc92ce7d..c0b9082a2c8 100644
--- a/t/t4013/diff.whatchanged_--root_--patch-with-stat_master
+++ b/t/t4013/diff.whatchanged_--root_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root --patch-with-stat master
+$ git whatchanged --root --patch-with-stat main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_master b/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_master
rename to t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_main
index d1d32bd34c3..0002c6912e1 100644
--- a/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root -c --patch-with-stat --summary master
+$ git whatchanged --root -c --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.whatchanged_--root_-p_master b/t/t4013/diff.whatchanged_--root_-p_main
similarity index 98%
rename from t/t4013/diff.whatchanged_--root_-p_master
rename to t/t4013/diff.whatchanged_--root_-p_main
index ebf1f0661e0..39f3e2be746 100644
--- a/t/t4013/diff.whatchanged_--root_-p_master
+++ b/t/t4013/diff.whatchanged_--root_-p_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root -p master
+$ git whatchanged --root -p main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_master b/t/t4013/diff.whatchanged_--root_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_master
rename to t/t4013/diff.whatchanged_--root_main
index a405cb61388..36f4d6697f5 100644
--- a/t/t4013/diff.whatchanged_--root_master
+++ b/t/t4013/diff.whatchanged_--root_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root master
+$ git whatchanged --root main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_-SF_-p_master b/t/t4013/diff.whatchanged_-SF_-p_main
similarity index 89%
rename from t/t4013/diff.whatchanged_-SF_-p_master
rename to t/t4013/diff.whatchanged_-SF_-p_main
index f39da848228..0e2e67c0df8 100644
--- a/t/t4013/diff.whatchanged_-SF_-p_master
+++ b/t/t4013/diff.whatchanged_-SF_-p_main
@@ -1,4 +1,4 @@
-$ git whatchanged -SF -p master
+$ git whatchanged -SF -p main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_-SF_master b/t/t4013/diff.whatchanged_-SF_main
similarity index 86%
rename from t/t4013/diff.whatchanged_-SF_master
rename to t/t4013/diff.whatchanged_-SF_main
index 0499321d0eb..34c6bf6b950 100644
--- a/t/t4013/diff.whatchanged_-SF_master
+++ b/t/t4013/diff.whatchanged_-SF_main
@@ -1,4 +1,4 @@
-$ git whatchanged -SF master
+$ git whatchanged -SF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_-p_master b/t/t4013/diff.whatchanged_-p_main
similarity index 98%
rename from t/t4013/diff.whatchanged_-p_master
rename to t/t4013/diff.whatchanged_-p_main
index f18d43209c0..18f3bdeef48 100644
--- a/t/t4013/diff.whatchanged_-p_master
+++ b/t/t4013/diff.whatchanged_-p_main
@@ -1,4 +1,4 @@
-$ git whatchanged -p master
+$ git whatchanged -p main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_master b/t/t4013/diff.whatchanged_main
similarity index 97%
rename from t/t4013/diff.whatchanged_master
rename to t/t4013/diff.whatchanged_main
index cd3bcc2c726..d6c83ed8b03 100644
--- a/t/t4013/diff.whatchanged_master
+++ b/t/t4013/diff.whatchanged_main
@@ -1,4 +1,4 @@
-$ git whatchanged master
+$ git whatchanged main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH 3/6] t9902: switch default branch name to main
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
  2025-08-27 15:24 ` [PATCH 1/6] t0018: switch default branch name to main Phillip Wood
  2025-08-27 15:24 ` [PATCH 2/6] t4013: " Phillip Wood
@ 2025-08-27 15:24 ` Phillip Wood
  2025-08-27 15:24 ` [PATCH 4/6] t0613: stop setting default initial branch Phillip Wood
                   ` (4 subsequent siblings)
  7 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

In preparation for removing GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME in
Git 3.0 update the bash completion tests that rely on the default
branch name being master.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t9902-completion.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 6650d33fba6..964e1f15693 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -11,9 +11,9 @@ test_description='test bash completion'
 # untraceable with such ancient Bash versions.
 test_untraceable=UnfortunatelyYes
 
-# Override environment and always use master for the default initial branch
+# Override environment and always use main for the default initial branch
 # name for these tests, so that rev completion candidates are as expected.
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./lib-bash.sh
@@ -1453,7 +1453,7 @@ test_expect_success 'git bisect - start subcommand arguments before double-dash
 		HEAD Z
 		final Z
 		initial Z
-		master Z
+		main Z
 		EOF
 	)
 '
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH 4/6] t0613: stop setting default initial branch
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
                   ` (2 preceding siblings ...)
  2025-08-27 15:24 ` [PATCH 3/6] t9902: " Phillip Wood
@ 2025-08-27 15:24 ` Phillip Wood
  2025-08-27 17:30   ` Junio C Hamano
  2025-08-27 15:24 ` [PATCH 5/6] t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME Phillip Wood
                   ` (3 subsequent siblings)
  7 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

As the tests are all run in separate repositories, set the branch
name to "master" when creating the repository for the tests where
the result depends on the branch name. This is in preparation for
removing GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME in Git 3.0.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t0613-reftable-write-options.sh | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/t/t0613-reftable-write-options.sh b/t/t0613-reftable-write-options.sh
index d77e601111f..b547e12d66d 100755
--- a/t/t0613-reftable-write-options.sh
+++ b/t/t0613-reftable-write-options.sh
@@ -11,16 +11,12 @@ export GIT_TEST_REFTABLE_AUTOCOMPACTION
 # Block sizes depend on the hash function, so we force SHA1 here.
 GIT_TEST_DEFAULT_HASH=sha1
 export GIT_TEST_DEFAULT_HASH
-# Block sizes also depend on the actual refs we write, so we force "master" to
-# be the default initial branch name.
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
-export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./test-lib.sh
 
 test_expect_success 'default write options' '
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -43,7 +39,7 @@ test_expect_success 'default write options' '
 test_expect_success 'disabled reflog writes no log blocks' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -62,7 +58,7 @@ test_expect_success 'disabled reflog writes no log blocks' '
 
 test_expect_success 'many refs results in multiple blocks' '
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -115,7 +111,7 @@ test_expect_success 'tiny block size leads to error' '
 test_expect_success 'small block size leads to multiple ref blocks' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit A &&
@@ -172,7 +168,7 @@ test_expect_success 'block size exceeding maximum supported size' '
 
 test_expect_success 'restart interval at every single record' '
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -212,7 +208,7 @@ test_expect_success 'restart interval exceeding maximum supported interval' '
 test_expect_success 'object index gets written by default with ref index' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -247,7 +243,7 @@ test_expect_success 'object index gets written by default with ref index' '
 test_expect_success 'object index can be disabled' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH 5/6] t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
                   ` (3 preceding siblings ...)
  2025-08-27 15:24 ` [PATCH 4/6] t0613: stop setting default initial branch Phillip Wood
@ 2025-08-27 15:24 ` Phillip Wood
  2025-08-27 15:24 ` [PATCH 6/6] breaking-changes: switch default branch to main Phillip Wood
                   ` (2 subsequent siblings)
  7 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Some of the tests use GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME when
checking if a ref exists. However, as that variable is always set to
"main" at the start of the test file, we can hard code the name in the
tests in preparation for removing GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
in Git 3.0.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t1403-show-ref.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/t/t1403-show-ref.sh b/t/t1403-show-ref.sh
index 9da3650e91b..7b83daeaa32 100755
--- a/t/t1403-show-ref.sh
+++ b/t/t1403-show-ref.sh
@@ -229,15 +229,15 @@ test_expect_success 'show-ref sub-modes are mutually exclusive' '
 '
 
 test_expect_success '--exists with existing reference' '
-	git show-ref --exists refs/heads/$GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+	git show-ref --exists refs/heads/main
 '
 
 test_expect_success '--exists with missing reference' '
 	test_expect_code 2 git show-ref --exists refs/heads/does-not-exist
 '
 
 test_expect_success '--exists does not use DWIM' '
-	test_expect_code 2 git show-ref --exists $GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME 2>err &&
+	test_expect_code 2 git show-ref --exists main 2>err &&
 	grep "reference does not exist" err
 '
 
@@ -254,7 +254,7 @@ test_expect_success '--exists with bad reference name' '
 
 test_expect_success '--exists with arbitrary symref' '
 	test_when_finished "git symbolic-ref -d refs/symref" &&
-	git symbolic-ref refs/symref refs/heads/$GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME &&
+	git symbolic-ref refs/symref refs/heads/main &&
 	git show-ref --exists refs/symref
 '
 
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH 6/6] breaking-changes: switch default branch to main
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
                   ` (4 preceding siblings ...)
  2025-08-27 15:24 ` [PATCH 5/6] t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME Phillip Wood
@ 2025-08-27 15:24 ` Phillip Wood
  2025-08-27 18:41   ` Junio C Hamano
  2025-09-02 11:36   ` Patrick Steinhardt
  2025-08-28 13:12 ` [PATCH 0/6] breaking changes: switch default initial branch name to "main" Johannes Schindelin
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
  7 siblings, 2 replies; 39+ messages in thread
From: Phillip Wood @ 2025-08-27 15:24 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Since 1296cbe4b46 (init: document `init.defaultBranch` better,
2020-12-11) "git-init.adoc" has advertized that the default name
of the initial branch may change in the future. The name "main"
is chosen to match the default used by the big git forge web sites.

The advice printed when init.defaultBranch is not set is
updated to say that the default will change to "main" in Git
3.0. Building with WITH_BREAKING_CHANGES enabled removes the advice,
changes the default branch name is "main" and removes support for
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME. The code in guess_remote_head()
that looks for "refs/heads/master" is left unchanged as that is only
called when the remote server does not support the symref capability
in the v0 protocol or the symref extension to the ls-refs list in the
v2 protocol. Such an old server is more likely to be using "master"
as the default branch name.

With the exception of the "git-init.adoc" the documentation is left
unchanged. I had hoped to parameterize the name of the default branch
by using an asciidoc attribute. Unfortunately attribute expansion
is inhibited by backticks and we use backticks to mark up ref names
so that idea does not work. As the changes to git-init.adoc show
inserting ifdef's around each instance of the branch name "master"
is cumbersome and makes the documentation sources harder to read.

Apart from "git-init.adoc" there are some other files where "master" is
used as the name of the initial branch rather than as an example of a
branch name such as "user-manual.adoc" and "gitcore-tutorial.adoc". The
name appears a lot in those so updating it with ifdef's is not really
practical. We can update that document in the 3.0 release cycle. The
other documentation where master is used as an example branch name
can be gradually converted over time.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 Documentation/BreakingChanges.adoc |  5 +++++
 Documentation/git-init.adoc        | 12 +++++++++---
 advice.c                           |  2 ++
 advice.h                           |  2 ++
 ci/run-build-and-tests.sh          |  1 -
 refs.c                             | 16 +++++++++++++---
 t/t0001-init.sh                    |  9 +++++----
 t/test-lib.sh                      | 15 +++++++++++----
 8 files changed, 47 insertions(+), 15 deletions(-)

diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
index f8d2eba061c..93922299321 100644
--- a/Documentation/BreakingChanges.adoc
+++ b/Documentation/BreakingChanges.adoc
@@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
 "reftable" format. Most importantly, alternative implementations of Git like
 JGit, libgit2 and Gitoxide need to support it.
 
+* The default branch name will be `main`. We have been warning that the default
+  name will change since 675704c74dd (init: provide useful advice about
+  init.defaultBranch, 2020-12-11). The new name matches the default branch name
+  used by many of the big git forges.
+
 === Removals
 
 * Support for grafting commits has long been superseded by git-replace(1).
diff --git a/Documentation/git-init.adoc b/Documentation/git-init.adoc
index a0dffba665f..39d4db6bccb 100644
--- a/Documentation/git-init.adoc
+++ b/Documentation/git-init.adoc
@@ -77,9 +77,15 @@ If this is a reinitialization, the repository will be moved to the specified pat
 `-b <branch-name>`::
 `--initial-branch=<branch-name>`::
 Use _<branch-name>_ for the initial branch in the newly created
-repository.  If not specified, fall back to the default name (currently
-`master`, but this is subject to change in the future; the name can be
-customized via the `init.defaultBranch` configuration variable).
+repository.  If not specified, fall back to the default name
+ifndef::with-breaking-changes[]
+(currently `master`, but this will change to `main` when Git 3.0 is released).
+endif::with-breaking-changes[]
+ifdef::with-breaking-changes[]
+(`main`).
+endif::with-breaking-changes[]
+The default name can be customized via the `init.defaultBranch` configuration
+variable.
 
 `--shared[=(false|true|umask|group|all|world|everybody|<perm>)]`::
 
diff --git a/advice.c b/advice.c
index e5f0ff84491..48c49ee4145 100644
--- a/advice.c
+++ b/advice.c
@@ -51,7 +51,9 @@ static struct {
 	[ADVICE_AM_WORK_DIR] 				= { "amWorkDir" },
 	[ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME] 	= { "checkoutAmbiguousRemoteBranchName" },
 	[ADVICE_COMMIT_BEFORE_MERGE]			= { "commitBeforeMerge" },
+#ifndef WITH_BREAKING_CHANGES
 	[ADVICE_DEFAULT_BRANCH_NAME]			= { "defaultBranchName" },
+#endif /* WITH_BREAKING_CHANGES */
 	[ADVICE_DETACHED_HEAD]				= { "detachedHead" },
 	[ADVICE_DIVERGING]				= { "diverging" },
 	[ADVICE_FETCH_SET_HEAD_WARN]			= { "fetchRemoteHEADWarn" },
diff --git a/advice.h b/advice.h
index 727dcecf4a3..fc1dc872049 100644
--- a/advice.h
+++ b/advice.h
@@ -18,7 +18,9 @@ enum advice_type {
 	ADVICE_AM_WORK_DIR,
 	ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME,
 	ADVICE_COMMIT_BEFORE_MERGE,
+#ifndef WITH_BREAKING_CHANGES
 	ADVICE_DEFAULT_BRANCH_NAME,
+#endif /* WITH_BREAKING_CHANGES */
 	ADVICE_DETACHED_HEAD,
 	ADVICE_DIVERGING,
 	ADVICE_FETCH_SET_HEAD_WARN,
diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
index 01823fd0f14..a21834043f3 100755
--- a/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@ -9,7 +9,6 @@ run_tests=t
 
 case "$jobname" in
 linux-breaking-changes)
-	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 	export WITH_BREAKING_CHANGES=YesPlease
 	;;
 linux-TEST-vars)
diff --git a/refs.c b/refs.c
index 4ff55cf24f6..e73f63ff6b8 100644
--- a/refs.c
+++ b/refs.c
@@ -627,10 +627,12 @@ void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
 		strvec_pushf(prefixes, *p, len, prefix);
 }
 
+#ifndef WITH_BREAKING_CHANGES
 static const char default_branch_name_advice[] = N_(
 "Using '%s' as the name for the initial branch. This default branch name\n"
-"is subject to change. To configure the initial branch name to use in all\n"
-"of your new repositories, which will suppress this warning, call:\n"
+"will change to \"main\" in Git 3.0. To configure the initial branch name\n"
+"to use in all of your new repositories, which will suppress this warning,\n"
+"call:\n"
 "\n"
 "\tgit config --global init.defaultBranch <name>\n"
 "\n"
@@ -639,24 +641,32 @@ static const char default_branch_name_advice[] = N_(
 "\n"
 "\tgit branch -m <name>\n"
 );
+#endif /* WITH_BREAKING_CHANGES */
 
 char *repo_default_branch_name(struct repository *r, int quiet)
 {
 	const char *config_key = "init.defaultbranch";
 	const char *config_display_key = "init.defaultBranch";
 	char *ret = NULL, *full_ref;
+#ifndef WITH_BREAKING_CHANGES
 	const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME");
 
 	if (env && *env)
 		ret = xstrdup(env);
-	else if (repo_config_get_string(r, config_key, &ret) < 0)
+#endif /* WITH_BREAKING_CHANGES */
+	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
 		die(_("could not retrieve `%s`"), config_display_key);
 
 	if (!ret) {
+#ifdef WITH_BREAKING_CHANGES
+		ret = xstrdup("main");
+		(void) quiet; /* Silence -Wunused-parameter */
+#else
 		ret = xstrdup("master");
 		if (!quiet)
 			advise_if_enabled(ADVICE_DEFAULT_BRANCH_NAME,
 					  _(default_branch_name_advice), ret);
+#endif /* WITH_BREAKING_CHANGES */
 	}
 
 	full_ref = xstrfmt("refs/heads/%s", ret);
diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index f593c536874..7223a98773d 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -868,7 +868,7 @@ test_expect_success 'overridden default initial branch name (config)' '
 	grep nmb actual
 '
 
-test_expect_success 'advice on unconfigured init.defaultBranch' '
+test_expect_success !WITH_BREAKING_CHANGES 'advice on unconfigured init.defaultBranch' '
 	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= git -c color.advice=always \
 		init unconfigured-default-branch-name 2>err &&
 	test_decode_color <err >decoded &&
@@ -883,16 +883,17 @@ test_expect_success 'advice on unconfigured init.defaultBranch disabled' '
 	test_grep ! "hint: " err
 '
 
-test_expect_success 'overridden default main branch name (env)' '
+test_expect_success !WITH_BREAKING_CHANGES 'overridden default main branch name (env)' '
 	test_config_global init.defaultBranch nmb &&
 	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=env git init main-branch-env &&
 	git -C main-branch-env symbolic-ref HEAD >actual &&
 	grep env actual
 '
 
 test_expect_success 'invalid default branch name' '
-	test_must_fail env GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME="with space" \
-		git init initial-branch-invalid 2>err &&
+	test_must_fail env GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
+		git -c init.defaultBranch="with space" \
+			init initial-branch-invalid 2>err &&
 	test_grep "invalid branch name" err
 '
 
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 621cd31ae1d..ec6b8ebcabb 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -127,10 +127,17 @@ then
 	export GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS
 fi
 
-# Explicitly set the default branch name for testing, to avoid the
-# transitory "git init" warning under --verbose.
-: ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
-export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+if test -z "$WITH_BREAKING_CHANGES"
+then
+	# Explicitly set the default branch name for testing, to avoid the
+	# transitory "git init" warning under --verbose.
+	: ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
+	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+else
+	# Unset the default branch name that is set in many test scripts
+	# before sourcing this file.
+	unset GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+fi
 
 ################################################################
 # It appears that people try to run tests without building...
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* Re: [PATCH 1/6] t0018: switch default branch name to main
  2025-08-27 15:24 ` [PATCH 1/6] t0018: switch default branch name to main Phillip Wood
@ 2025-08-27 17:21   ` Junio C Hamano
  2025-08-28 14:00     ` Phillip Wood
  0 siblings, 1 reply; 39+ messages in thread
From: Junio C Hamano @ 2025-08-27 17:21 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang

Phillip Wood <phillip.wood123@gmail.com> writes:

> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>
> These tests use "trunk" as the default branch name but the exact
> name of the branch is incidental to testing if the advice message
> includes it. ...

Would't we be better prepared for a future where advice messages may
start including the current branch name, though, if we made sure we
are on the branch whose name is known?

> ... Git 3.0 will change the default branch name to "main"
> and remove support for GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME so change

Will it?  I would have expected and hoped that this support won't be
ripped out.  The political atomosphere to decide if a name is
"correct" will change over time.  When somebody comes up with a
reason to burn 'main', just like everybody moved out of 'master' a
few years ago, wouldn't we be better off to keep this mechanism?

If we truly believe that we have chosen the forever-perfect name
that nobody would ever bring up renaming again, we can rip the
support out.  But I am not that optimistic.

> these test to use "main" instead of "topic".

You meant "trunk" here.

> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
> ---
>  t/t0018-advice.sh | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/t/t0018-advice.sh b/t/t0018-advice.sh
> index f68e08d0b14..c695ade4be8 100755
> --- a/t/t0018-advice.sh
> +++ b/t/t0018-advice.sh
> @@ -2,7 +2,7 @@
>  
>  test_description='Test advise_if_enabled functionality'
>  
> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=trunk
> +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>  export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>  
>  . ./test-lib.sh
> @@ -33,7 +33,7 @@ test_expect_success 'advice should not be printed when config variable is set to
>  
>  test_expect_success 'advice should not be printed when --no-advice is used' '
>  	q_to_tab >expect <<-\EOF &&
> -	On branch trunk
> +	On branch main
>  
>  	No commits yet
>  
> @@ -55,7 +55,7 @@ test_expect_success 'advice should not be printed when --no-advice is used' '
>  
>  test_expect_success 'advice should not be printed when GIT_ADVICE is set to false' '
>  	q_to_tab >expect <<-\EOF &&
> -	On branch trunk
> +	On branch main
>  
>  	No commits yet
>  
> @@ -77,7 +77,7 @@ test_expect_success 'advice should not be printed when GIT_ADVICE is set to fals
>  
>  test_expect_success 'advice should be printed when GIT_ADVICE is set to true' '
>  	q_to_tab >expect <<-\EOF &&
> -	On branch trunk
> +	On branch main
>  
>  	No commits yet

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 4/6] t0613: stop setting default initial branch
  2025-08-27 15:24 ` [PATCH 4/6] t0613: stop setting default initial branch Phillip Wood
@ 2025-08-27 17:30   ` Junio C Hamano
  0 siblings, 0 replies; 39+ messages in thread
From: Junio C Hamano @ 2025-08-27 17:30 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Patrick Steinhardt, Johannes Schindelin, Wing Huang

Phillip Wood <phillip.wood123@gmail.com> writes:

> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>
> As the tests are all run in separate repositories, set the branch
> name to "master" when creating the repository for the tests where
> the result depends on the branch name. This is in preparation for
> removing GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME in Git 3.0.

I do not agree with the statement that Git 3.0 should remove support
for GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME facility in its test suite,
so it is somewhat moot for me to review almost all the patches in
this series, but this caught my attention.  As this one needs to fix
the initial branch name to a fixed string, no matter the hardcoded
initial branch name of the time is (even after we rename again from
'main' to something else), I do think this change is VERY MUCH a
good thing to do.

> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
> ---
>  t/t0613-reftable-write-options.sh | 18 +++++++-----------
>  1 file changed, 7 insertions(+), 11 deletions(-)
>
> diff --git a/t/t0613-reftable-write-options.sh b/t/t0613-reftable-write-options.sh
> index d77e601111f..b547e12d66d 100755
> --- a/t/t0613-reftable-write-options.sh
> +++ b/t/t0613-reftable-write-options.sh
> @@ -11,16 +11,12 @@ export GIT_TEST_REFTABLE_AUTOCOMPACTION
>  # Block sizes depend on the hash function, so we force SHA1 here.
>  GIT_TEST_DEFAULT_HASH=sha1
>  export GIT_TEST_DEFAULT_HASH
> -# Block sizes also depend on the actual refs we write, so we force "master" to
> -# be the default initial branch name.

We may however need to keep this comment somewhere in this file, to
warn against future developers that all "git init" invocations must
use 'master' (by the way, would any 6-byte name do?  I dunno) as the
initial branch name.

> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
> -export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>  
>  . ./test-lib.sh
>  
>  test_expect_success 'default write options' '
>  	test_when_finished "rm -rf repo" &&
> -	git init repo &&
> +	git init --initial-branch master repo &&

And being explict like this is a good idea.

I am curious how the CC: list was formulated, though, as neither
name comes up in "git shortlog t/t0613-reftable-write-options.sh".

I've added Patrick for comment (primarily to pick his brain for the
6-byte thing).

Thanks.

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-08-27 15:24 ` [PATCH 6/6] breaking-changes: switch default branch to main Phillip Wood
@ 2025-08-27 18:41   ` Junio C Hamano
  2025-09-02 11:36   ` Patrick Steinhardt
  1 sibling, 0 replies; 39+ messages in thread
From: Junio C Hamano @ 2025-08-27 18:41 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang

Phillip Wood <phillip.wood123@gmail.com> writes:

> diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
> index f8d2eba061c..93922299321 100644
> --- a/Documentation/BreakingChanges.adoc
> +++ b/Documentation/BreakingChanges.adoc
> @@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
>  "reftable" format. Most importantly, alternative implementations of Git like
>  JGit, libgit2 and Gitoxide need to support it.
>  
> +* The default branch name will be `main`. We have been warning that the default
> +  name will change since 675704c74dd (init: provide useful advice about
> +  init.defaultBranch, 2020-12-11). The new name matches the default branch name
> +  used by many of the big git forges.
> +

Good.

> diff --git a/Documentation/git-init.adoc b/Documentation/git-init.adoc
> index a0dffba665f..39d4db6bccb 100644
> --- a/Documentation/git-init.adoc
> +++ b/Documentation/git-init.adoc
> @@ -77,9 +77,15 @@ If this is a reinitialization, the repository will be moved to the specified pat
>  `-b <branch-name>`::
>  `--initial-branch=<branch-name>`::
>  Use _<branch-name>_ for the initial branch in the newly created
> -repository.  If not specified, fall back to the default name (currently
> -`master`, but this is subject to change in the future; the name can be
> -customized via the `init.defaultBranch` configuration variable).
> +repository.  If not specified, fall back to the default name
> +ifndef::with-breaking-changes[]
> +(currently `master`, but this will change to `main` when Git 3.0 is released).
> +endif::with-breaking-changes[]
> +ifdef::with-breaking-changes[]
> +(`main`).
> +endif::with-breaking-changes[]

Good.  We might have to change it back to "(currently `main`)" again
but I do not see the need to prepare for such a re-rename.  As we do
not have the "currently", we can say

	... to the default name `main`.

without parentheses.

> +The default name can be customized via the `init.defaultBranch` configuration
> +variable.

> diff --git a/advice.c b/advice.c
> index e5f0ff84491..48c49ee4145 100644
> --- a/advice.c
> +++ b/advice.c
> @@ -51,7 +51,9 @@ static struct {
>  	[ADVICE_AM_WORK_DIR] 				= { "amWorkDir" },
>  	[ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME] 	= { "checkoutAmbiguousRemoteBranchName" },
>  	[ADVICE_COMMIT_BEFORE_MERGE]			= { "commitBeforeMerge" },
> +#ifndef WITH_BREAKING_CHANGES
>  	[ADVICE_DEFAULT_BRANCH_NAME]			= { "defaultBranchName" },
> +#endif /* WITH_BREAKING_CHANGES */
>  	[ADVICE_DETACHED_HEAD]				= { "detachedHead" },
>  	[ADVICE_DIVERGING]				= { "diverging" },
>  	[ADVICE_FETCH_SET_HEAD_WARN]			= { "fetchRemoteHEADWarn" },
> diff --git a/advice.h b/advice.h
> index 727dcecf4a3..fc1dc872049 100644
> --- a/advice.h
> +++ b/advice.h
> @@ -18,7 +18,9 @@ enum advice_type {
>  	ADVICE_AM_WORK_DIR,
>  	ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME,
>  	ADVICE_COMMIT_BEFORE_MERGE,
> +#ifndef WITH_BREAKING_CHANGES
>  	ADVICE_DEFAULT_BRANCH_NAME,
> +#endif /* WITH_BREAKING_CHANGES */
>  	ADVICE_DETACHED_HEAD,
>  	ADVICE_DIVERGING,
>  	ADVICE_FETCH_SET_HEAD_WARN,

Good.

> diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
> index 01823fd0f14..a21834043f3 100755
> --- a/ci/run-build-and-tests.sh
> +++ b/ci/run-build-and-tests.sh
> @@ -9,7 +9,6 @@ run_tests=t
>  
>  case "$jobname" in
>  linux-breaking-changes)
> -	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main

Questionable.

> diff --git a/refs.c b/refs.c
> index 4ff55cf24f6..e73f63ff6b8 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -627,10 +627,12 @@ void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
>  		strvec_pushf(prefixes, *p, len, prefix);
>  }
>  
> +#ifndef WITH_BREAKING_CHANGES
>  static const char default_branch_name_advice[] = N_(
>  "Using '%s' as the name for the initial branch. This default branch name\n"
> -"is subject to change. To configure the initial branch name to use in all\n"
> -"of your new repositories, which will suppress this warning, call:\n"
> +"will change to \"main\" in Git 3.0. To configure the initial branch name\n"
> +"to use in all of your new repositories, which will suppress this warning,\n"
> +"call:\n"
>  "\n"
>  "\tgit config --global init.defaultBranch <name>\n"
>  "\n"
> @@ -639,24 +641,32 @@ static const char default_branch_name_advice[] = N_(
>  "\n"
>  "\tgit branch -m <name>\n"
>  );
> +#endif /* WITH_BREAKING_CHANGES */

Good.

>  char *repo_default_branch_name(struct repository *r, int quiet)
>  {
>  	const char *config_key = "init.defaultbranch";
>  	const char *config_display_key = "init.defaultBranch";
>  	char *ret = NULL, *full_ref;
> +#ifndef WITH_BREAKING_CHANGES
>  	const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME");
>  
>  	if (env && *env)
>  		ret = xstrdup(env);
> -	else if (repo_config_get_string(r, config_key, &ret) < 0)
> +#endif /* WITH_BREAKING_CHANGES */

Questionable.

> +	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
>  		die(_("could not retrieve `%s`"), config_display_key);
>  
>  	if (!ret) {
> +#ifdef WITH_BREAKING_CHANGES
> +		ret = xstrdup("main");
> +		(void) quiet; /* Silence -Wunused-parameter */
> +#else
>  		ret = xstrdup("master");
>  		if (!quiet)
>  			advise_if_enabled(ADVICE_DEFAULT_BRANCH_NAME,
>  					  _(default_branch_name_advice), ret);
> +#endif /* WITH_BREAKING_CHANGES */

Very good.

Thanks.

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 0/6] breaking changes: switch default initial branch name to "main"
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
                   ` (5 preceding siblings ...)
  2025-08-27 15:24 ` [PATCH 6/6] breaking-changes: switch default branch to main Phillip Wood
@ 2025-08-28 13:12 ` Johannes Schindelin
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
  7 siblings, 0 replies; 39+ messages in thread
From: Johannes Schindelin @ 2025-08-28 13:12 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Wing Huang

Hi Phillip,

On Wed, 27 Aug 2025, Phillip Wood wrote:

> From: Phillip Wood <phillip.wood@dunelm.org.uk>
> 
> This series switches the default branch name from "master" to "main"
> when WITH_BREAKING_CHANGES is enabled. We have been warning that the
> default name will change since 675704c74dd (init: provide useful advice
> about init.defaultBranch, 2020-12-11) and the major git forges have all
> switched their default branch name to "main", so I think it makes sense
> to change the default branch name in git to match the wider ecosystem.
> 
> The first five patches update tests that currently require a default
> branch name different to "main". The sixth patch then changes the
> default branch "main" and removes GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
> when WITH_BREAKING_CHANGES is enabled. Patch 2 is quite large but
> is mechanically generated so it should be possible to review it by
> checking that the changes can be reproduced.
> 
> This is an alternative to changing the branch name now as suggested in
> https://lore.kernel.org<pull.1961.git.1756183921623.gitgitgadget@gmail.com

This link is slightly broken; The unbroken version is
https://lore.kernel.org/git/pull.1961.git.1756183921623.gitgitgadget@gmail.com/

Thank you for picking this effort up! I am impressed by your courage in
face of the way this `master -> main` initiative was received and the
amount of leadership that was put behind it.

The changes all look good to me, and while I have my doubts that Git will
follow the laudable leadership demonstrated by the big Git forges in
trying to be a bit more mindful, I will remain eagerly interested in any
progress that can possibly be made here.

Ciao,
Johannes

> 
> Base-Commit: f814da676ae46aac5be0a98b99373a76dee6cedb
> Published-As: https://github.com/phillipwood/git/releases/tag/pw%2Finitial-branch-is-main%2Fv1
> View-Changes-At: https://github.com/phillipwood/git/compare/f814da676...487d1a331
> Fetch-It-Via: git fetch https://github.com/phillipwood/git pw/initial-branch-is-main/v1
> 
> 
> Phillip Wood (6):
>   t0018: switch default branch name to main
>   t4013: switch default branch name to main
>   t9902: switch default branch name to main
>   t0613: stop setting default initial branch
>   t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>   breaking-changes: switch default branch to main
> 
>  Documentation/BreakingChanges.adoc            |   5 +
>  Documentation/git-init.adoc                   |  12 +-
>  advice.c                                      |   2 +
>  advice.h                                      |   2 +
>  ci/run-build-and-tests.sh                     |   1 -
>  refs.c                                        |  16 +-
>  t/t0001-init.sh                               |   9 +-
>  t/t0018-advice.sh                             |   8 +-
>  t/t0613-reftable-write-options.sh             |  18 +-
>  t/t1403-show-ref.sh                           |   6 +-
>  t/t4013-diff-various.sh                       | 228 +++++++++---------
>  ...ree_--cc_--patch-with-stat_--summary_main} |   2 +-
>  ...iff.diff-tree_--cc_--patch-with-stat_main} |   2 +-
>  ...r => diff.diff-tree_--cc_--shortstat_main} |   2 +-
>  ...diff.diff-tree_--cc_--stat_--summary_main} |   2 +-
>  ...master => diff.diff-tree_--cc_--stat_main} |   2 +-
>  ...e_--cc_master => diff.diff-tree_--cc_main} |   2 +-
>  ...master => diff.diff-tree_-c_--abbrev_main} |   2 +-
>  ...> diff.diff-tree_-c_--stat_--summary_main} |   2 +-
>  ...t_master => diff.diff-tree_-c_--stat_main} |   2 +-
>  ...-tree_-c_master => diff.diff-tree_-c_main} |   2 +-
>  ...-tree_-m_master => diff.diff-tree_-m_main} |   2 +-
>  ...-p_-m_master => diff.diff-tree_-p_-m_main} |   2 +-
>  t/t4013/diff.diff-tree_-p_main                |   2 +
>  t/t4013/diff.diff-tree_-p_master              |   2 -
>  t/t4013/diff.diff-tree_main                   |   2 +
>  t/t4013/diff.diff-tree_master                 |   2 -
>  t/t4013/diff.diff_--dirstat_--cc_main~1_main  |   3 +
>  .../diff.diff_--dirstat_--cc_master~1_master  |   3 -
>  t/t4013/diff.diff_--dirstat_main~1_main~2     |   3 +
>  t/t4013/diff.diff_--dirstat_master~1_master~2 |   3 -
>  ...ff.diff_--line-prefix=abc_main_main^_side} |   2 +-
>  ...master^_side => diff.diff_main_main^_side} |   2 +-
>  ...mat-patch_--attach_--stdout_initial..main} |   2 +-
>  ...at-patch_--attach_--stdout_initial..main^} |   2 +-
>  ...e_--stdout_--numbered-files_initial..main} |   2 +-
>  ...t_--subject-prefix=TESTCASE_initial..main} |   2 +-
>  ...mat-patch_--inline_--stdout_initial..main} |   2 +-
>  ...at-patch_--inline_--stdout_initial..main^} |   2 +-
>  ...t-patch_--inline_--stdout_initial..main^^} |   2 +-
>  ...--stdout_--cover-letter_-n_initial..main^} |   2 +-
>  ...atch_--stdout_--no-numbered_initial..main} |   2 +-
>  ...t-patch_--stdout_--numbered_initial..main} |   2 +-
>  ... diff.format-patch_--stdout_initial..main} |   2 +-
>  ...diff.format-patch_--stdout_initial..main^} |   2 +-
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>  t/t9902-completion.sh                         |   6 +-
>  t/test-lib.sh                                 |  15 +-
>  109 files changed, 281 insertions(+), 253 deletions(-)
>  rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_--summary_master => diff.diff-tree_--cc_--patch-with-stat_--summary_main} (86%)
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>  rename t/t4013/{diff.diff-tree_--cc_--shortstat_master => diff.diff-tree_--cc_--shortstat_main} (65%)
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> 
> -- 
> 2.49.0.897.gfad3eb7d210
> 
> 
> 

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 1/6] t0018: switch default branch name to main
  2025-08-27 17:21   ` Junio C Hamano
@ 2025-08-28 14:00     ` Phillip Wood
  2025-08-28 16:49       ` Junio C Hamano
  0 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-08-28 14:00 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git, Johannes Schindelin, Wing Huang

Hi Junio

On 27/08/2025 18:21, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
> 
>> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>>
>> These tests use "trunk" as the default branch name but the exact
>> name of the branch is incidental to testing if the advice message
>> includes it. ...
> 
> Would't we be better prepared for a future where advice messages may
> start including the current branch name, though, if we made sure we
> are on the branch whose name is known?

The advice message does include the current branch name, that's why the 
test needs to be updated when we change that name from "trunk" to 
"main". The sentence above is trying to say that it does not matter what 
that name is, we just need to check it appears in the advice message. I 
could see an argument for the tests not depending on git's default 
branch name if it changed frequently but realistically we're unlikely to 
change in again in the near future. If we did use a different name in 
the tests it is just as likely to cause objections and need to be 
changed as git's default name so I'm not sure it gains us much.
>> ... Git 3.0 will change the default branch name to "main"
>> and remove support for GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME so change
> 
> Will it?  I would have expected and hoped that this support won't be
> ripped out.  The political atomosphere to decide if a name is
> "correct" will change over time.  When somebody comes up with a
> reason to burn 'main', just like everybody moved out of 'master' a
> few years ago, wouldn't we be better off to keep this mechanism?
> 
> If we truly believe that we have chosen the forever-perfect name
> that nobody would ever bring up renaming again, we can rip the
> support out.  But I am not that optimistic.

If it's another 20 years until we change the default branch is it really 
worth supporting this variable until then? I find setting it in tests is 
mostly pointless boilerplate. When the variable was introduced in 
704fed9ea22 (tests: start moving to a different default main branch 
name, 2020-10-23) it was described as "This `GIT_TEST_*` variable is 
meant purely for the transitional period while the entire test suite is 
converted to use `main` as the initial branch name by default." so I was 
hoping we could remove it.
>> these test to use "main" instead of "topic".
> 
> You meant "trunk" here.

Will fix

Thanks

Phillip
>> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
>> ---
>>   t/t0018-advice.sh | 8 ++++----
>>   1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> diff --git a/t/t0018-advice.sh b/t/t0018-advice.sh
>> index f68e08d0b14..c695ade4be8 100755
>> --- a/t/t0018-advice.sh
>> +++ b/t/t0018-advice.sh
>> @@ -2,7 +2,7 @@
>>   
>>   test_description='Test advise_if_enabled functionality'
>>   
>> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=trunk
>> +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>>   export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>>   
>>   . ./test-lib.sh
>> @@ -33,7 +33,7 @@ test_expect_success 'advice should not be printed when config variable is set to
>>   
>>   test_expect_success 'advice should not be printed when --no-advice is used' '
>>   	q_to_tab >expect <<-\EOF &&
>> -	On branch trunk
>> +	On branch main
>>   
>>   	No commits yet
>>   
>> @@ -55,7 +55,7 @@ test_expect_success 'advice should not be printed when --no-advice is used' '
>>   
>>   test_expect_success 'advice should not be printed when GIT_ADVICE is set to false' '
>>   	q_to_tab >expect <<-\EOF &&
>> -	On branch trunk
>> +	On branch main
>>   
>>   	No commits yet
>>   
>> @@ -77,7 +77,7 @@ test_expect_success 'advice should not be printed when GIT_ADVICE is set to fals
>>   
>>   test_expect_success 'advice should be printed when GIT_ADVICE is set to true' '
>>   	q_to_tab >expect <<-\EOF &&
>> -	On branch trunk
>> +	On branch main
>>   
>>   	No commits yet


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 1/6] t0018: switch default branch name to main
  2025-08-28 14:00     ` Phillip Wood
@ 2025-08-28 16:49       ` Junio C Hamano
  2025-08-28 21:31         ` brian m. carlson
  0 siblings, 1 reply; 39+ messages in thread
From: Junio C Hamano @ 2025-08-28 16:49 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang

Phillip Wood <phillip.wood123@gmail.com> writes:

>>> These tests use "trunk" as the default branch name but the exact
>>> name of the branch is incidental to testing if the advice message
>>> includes it. ...
>> Would't we be better prepared for a future where advice messages may
>> start including the current branch name, though, if we made sure we
>> are on the branch whose name is known?
>
> The advice message does include the current branch name, that's why
> the test needs to be updated when we change that name from "trunk" to
> "main". The sentence above is trying to say that it does not matter
> what that name is, we just need to check it appears in the advice
> message.

That makes 100% sense.

> I could see an argument for the tests not depending on git's
> default branch name if it changed frequently but realistically we're
> unlikely to change in again in the near future.

A test that automatically adjusts to the then-current default so
that we do not have to worry about what it is is much better than a
test that needs constant maintenance every 10 years.  A test that
uses one fixed name is slightly worse than auto-adjusting one, but
is still far better as it is maintenance-free.

Hardwiring a name the test uses does have one distinct advantage,
i.e., it serves as a documentation that the test vector depends on
the branch name, making it clear where the thing that the test
expects comes from.

> If we did use a different name in the tests it is just as likely
> to cause objections and need to be changed as git's default name
> so I'm not sure it gains us much.

I do not quite understand.  Do you mean in 20 years some animal
rights activists object that 'trunk' is offensive to elephants and
we will be forced to change?  As I do not see the difference between
'main' and 'trunk' about how likely either of them get such
complaint against, I can live with hardwiring the branch name used
in the test 'main', but then 'trunk' would equally work well, so
unless there are other things the patch changes, I do not quite see
much point in this patch.

[Footnote]

By the way, I do appreciate the "let's switch the default as
promised at the major version boundary", the primary theme of this
topic.  I think we have done enough prep work to ensure that the
result would work without disruption with existing projects by
ensuring that (1) existing user repositories can keep working, as
this is only about the initial branch name, (2) existing project
repositories cloned anew will keep working as before, as we follow
what the upstream does.

One thing that is missing is probably a way to remotely create a
symref (or repoint one).  As it would break existing users if an
upstream suddenly switches its 'master' to 'main', the second best
thing to do is to ensure that they always point at the same commit,
and the natural way to do so is to

    $ git symbolic-ref refs/heads/main refs/heads/master

but we cannot do so remotely.  I've been doing the third best thing
since late November 2021, which is to push to both at the same time,
which is ugly but https://git.kernel.org/pub/scm/git/git.git/ and
other mirrors may tell you that both are available.

All other mirrors do not have CI attached to them, and they have
been running with both 'main' and 'master' pointing at the same
commit for quite some time, but https://github.com/git/git/ does not
have 'main'; I attempted back when I arranged to do the "push to
both" back in November 2021, but it caused two CI jobs on 'master'
and 'main' run on the identical sources simultanously, wasting
resources, every time the topics graduated, so I stopped doing so.

Perhaps tweaking the .github/workflows/main.yml file a bit and
explicitly excluding either one of these two identical branches
would be what it takes, but it would probably be a multi-step
process, to (1) tell it to ignore the 'main' branch, (2) start
pushing to 'main' in addition to 'master', and then finally (3) flip
the CI config to tell it to ignore the 'master' branch instead.

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 1/6] t0018: switch default branch name to main
  2025-08-28 16:49       ` Junio C Hamano
@ 2025-08-28 21:31         ` brian m. carlson
  0 siblings, 0 replies; 39+ messages in thread
From: brian m. carlson @ 2025-08-28 21:31 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: Phillip Wood, git, Johannes Schindelin, Wing Huang

[-- Attachment #1: Type: text/plain, Size: 1072 bytes --]

On 2025-08-28 at 16:49:35, Junio C Hamano wrote:
> One thing that is missing is probably a way to remotely create a
> symref (or repoint one).  As it would break existing users if an
> upstream suddenly switches its 'master' to 'main', the second best
> thing to do is to ensure that they always point at the same commit,
> and the natural way to do so is to
> 
>     $ git symbolic-ref refs/heads/main refs/heads/master
> 
> but we cannot do so remotely.  I've been doing the third best thing
> since late November 2021, which is to push to both at the same time,
> which is ugly but https://git.kernel.org/pub/scm/git/git.git/ and
> other mirrors may tell you that both are available.

Yes, this would be a nice feature to have.  Oftentimes forges have
external functionality that needs to hook in to name changes, so they
might not choose to enable such an option, at least at first, but users
using things like Gitolite or simply bare repositories over SSH might
find this to be very useful.
-- 
brian m. carlson (they/them)
Toronto, Ontario, CA

[-- Attachment #2: signature.asc --]
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^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-08-27 15:24 ` [PATCH 6/6] breaking-changes: switch default branch to main Phillip Wood
  2025-08-27 18:41   ` Junio C Hamano
@ 2025-09-02 11:36   ` Patrick Steinhardt
  2025-09-02 15:13     ` Phillip Wood
  1 sibling, 1 reply; 39+ messages in thread
From: Patrick Steinhardt @ 2025-09-02 11:36 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang, Phillip Wood

On Wed, Aug 27, 2025 at 04:24:50PM +0100, Phillip Wood wrote:
> From: Phillip Wood <phillip.wood@dunelm.org.uk>
> 
> Since 1296cbe4b46 (init: document `init.defaultBranch` better,
> 2020-12-11) "git-init.adoc" has advertized that the default name

s/advertized/advertised/

> of the initial branch may change in the future. The name "main"
> is chosen to match the default used by the big git forge web sites.

s/git/Git/

> The advice printed when init.defaultBranch is not set is
> updated to say that the default will change to "main" in Git
> 3.0. Building with WITH_BREAKING_CHANGES enabled removes the advice,
> changes the default branch name is "main" and removes support for

s/is/to/

> GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME. The code in guess_remote_head()

As Junio already mentioned, I don't really think it's necessary to drop
`GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME`, making much of this commit
series obsolete.

> that looks for "refs/heads/master" is left unchanged as that is only
> called when the remote server does not support the symref capability
> in the v0 protocol or the symref extension to the ls-refs list in the
> v2 protocol. Such an old server is more likely to be using "master"
> as the default branch name.

Hm, that's probably fair.

> With the exception of the "git-init.adoc" the documentation is left
> unchanged. I had hoped to parameterize the name of the default branch
> by using an asciidoc attribute. Unfortunately attribute expansion
> is inhibited by backticks and we use backticks to mark up ref names
> so that idea does not work. As the changes to git-init.adoc show
> inserting ifdef's around each instance of the branch name "master"
> is cumbersome and makes the documentation sources harder to read.
> 
> Apart from "git-init.adoc" there are some other files where "master" is
> used as the name of the initial branch rather than as an example of a
> branch name such as "user-manual.adoc" and "gitcore-tutorial.adoc". The
> name appears a lot in those so updating it with ifdef's is not really
> practical. We can update that document in the 3.0 release cycle. The
> other documentation where master is used as an example branch name
> can be gradually converted over time.

Agreed.

> diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
> index f8d2eba061c..93922299321 100644
> --- a/Documentation/BreakingChanges.adoc
> +++ b/Documentation/BreakingChanges.adoc
> @@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
>  "reftable" format. Most importantly, alternative implementations of Git like
>  JGit, libgit2 and Gitoxide need to support it.
>  
> +* The default branch name will be `main`. We have been warning that the default

Let's explicitly mention here that this is only going to be the case for
_new_ repositories. It's obvious to us, but for others it might not be
that existing repositories will not see any change in behaviour due to
this.

> +  name will change since 675704c74dd (init: provide useful advice about
> +  init.defaultBranch, 2020-12-11). The new name matches the default branch name
> +  used by many of the big git forges.

s/git/Git/

> diff --git a/Documentation/git-init.adoc b/Documentation/git-init.adoc
> index a0dffba665f..39d4db6bccb 100644
> --- a/Documentation/git-init.adoc
> +++ b/Documentation/git-init.adoc
> @@ -77,9 +77,15 @@ If this is a reinitialization, the repository will be moved to the specified pat
>  `-b <branch-name>`::
>  `--initial-branch=<branch-name>`::
>  Use _<branch-name>_ for the initial branch in the newly created
> -repository.  If not specified, fall back to the default name (currently
> -`master`, but this is subject to change in the future; the name can be
> -customized via the `init.defaultBranch` configuration variable).
> +repository.  If not specified, fall back to the default name
> +ifndef::with-breaking-changes[]
> +(currently `master`, but this will change to `main` when Git 3.0 is released).
> +endif::with-breaking-changes[]
> +ifdef::with-breaking-changes[]
> +(`main`).
> +endif::with-breaking-changes[]
> +The default name can be customized via the `init.defaultBranch` configuration
> +variable.
>  
>  `--shared[=(false|true|umask|group|all|world|everybody|<perm>)]`::
>  

This is ugly indeed, but we cannot do anything about that *shrug*

> diff --git a/advice.c b/advice.c
> index e5f0ff84491..48c49ee4145 100644
> --- a/advice.c
> +++ b/advice.c
> @@ -51,7 +51,9 @@ static struct {
>  	[ADVICE_AM_WORK_DIR] 				= { "amWorkDir" },
>  	[ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME] 	= { "checkoutAmbiguousRemoteBranchName" },
>  	[ADVICE_COMMIT_BEFORE_MERGE]			= { "commitBeforeMerge" },
> +#ifndef WITH_BREAKING_CHANGES
>  	[ADVICE_DEFAULT_BRANCH_NAME]			= { "defaultBranchName" },
> +#endif /* WITH_BREAKING_CHANGES */
>  	[ADVICE_DETACHED_HEAD]				= { "detachedHead" },
>  	[ADVICE_DIVERGING]				= { "diverging" },
>  	[ADVICE_FETCH_SET_HEAD_WARN]			= { "fetchRemoteHEADWarn" },
> diff --git a/advice.h b/advice.h
> index 727dcecf4a3..fc1dc872049 100644
> --- a/advice.h
> +++ b/advice.h
> @@ -18,7 +18,9 @@ enum advice_type {
>  	ADVICE_AM_WORK_DIR,
>  	ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME,
>  	ADVICE_COMMIT_BEFORE_MERGE,
> +#ifndef WITH_BREAKING_CHANGES
>  	ADVICE_DEFAULT_BRANCH_NAME,
> +#endif /* WITH_BREAKING_CHANGES */
>  	ADVICE_DETACHED_HEAD,
>  	ADVICE_DIVERGING,
>  	ADVICE_FETCH_SET_HEAD_WARN,

Okay. I don't really think it's necessary to conditionally compile this,
but it doesn't hurt much, either.

> diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
> index 01823fd0f14..a21834043f3 100755
> --- a/ci/run-build-and-tests.sh
> +++ b/ci/run-build-and-tests.sh
> @@ -9,7 +9,6 @@ run_tests=t
>  
>  case "$jobname" in
>  linux-breaking-changes)
> -	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>  	export WITH_BREAKING_CHANGES=YesPlease
>  	;;
>  linux-TEST-vars)

Nice.

> diff --git a/refs.c b/refs.c
> index 4ff55cf24f6..e73f63ff6b8 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -627,10 +627,12 @@ void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
>  		strvec_pushf(prefixes, *p, len, prefix);
>  }
>  
> +#ifndef WITH_BREAKING_CHANGES
>  static const char default_branch_name_advice[] = N_(
>  "Using '%s' as the name for the initial branch. This default branch name\n"
> -"is subject to change. To configure the initial branch name to use in all\n"
> -"of your new repositories, which will suppress this warning, call:\n"
> +"will change to \"main\" in Git 3.0. To configure the initial branch name\n"
> +"to use in all of your new repositories, which will suppress this warning,\n"
> +"call:\n"
>  "\n"
>  "\tgit config --global init.defaultBranch <name>\n"
>  "\n"
> @@ -639,24 +641,32 @@ static const char default_branch_name_advice[] = N_(
>  "\n"
>  "\tgit branch -m <name>\n"
>  );
> +#endif /* WITH_BREAKING_CHANGES */
>  
>  char *repo_default_branch_name(struct repository *r, int quiet)
>  {
>  	const char *config_key = "init.defaultbranch";
>  	const char *config_display_key = "init.defaultBranch";
>  	char *ret = NULL, *full_ref;
> +#ifndef WITH_BREAKING_CHANGES
>  	const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME");
>  
>  	if (env && *env)
>  		ret = xstrdup(env);
> -	else if (repo_config_get_string(r, config_key, &ret) < 0)
> +#endif /* WITH_BREAKING_CHANGES */
> +	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
>  		die(_("could not retrieve `%s`"), config_display_key);
>  
>  	if (!ret) {
> +#ifdef WITH_BREAKING_CHANGES
> +		ret = xstrdup("main");
> +		(void) quiet; /* Silence -Wunused-parameter */

We have the `MAYBE_UNUSED` attribute that you can apply to `int
quiet` to avoid this cast.

> diff --git a/t/t0001-init.sh b/t/t0001-init.sh
> index f593c536874..7223a98773d 100755
> --- a/t/t0001-init.sh
> +++ b/t/t0001-init.sh
> @@ -868,7 +868,7 @@ test_expect_success 'overridden default initial branch name (config)' '
>  	grep nmb actual
>  '
>  
> -test_expect_success 'advice on unconfigured init.defaultBranch' '
> +test_expect_success !WITH_BREAKING_CHANGES 'advice on unconfigured init.defaultBranch' '
>  	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= git -c color.advice=always \
>  		init unconfigured-default-branch-name 2>err &&
>  	test_decode_color <err >decoded &&
> @@ -883,16 +883,17 @@ test_expect_success 'advice on unconfigured init.defaultBranch disabled' '
>  	test_grep ! "hint: " err
>  '
>  
> -test_expect_success 'overridden default main branch name (env)' '
> +test_expect_success !WITH_BREAKING_CHANGES 'overridden default main branch name (env)' '
>  	test_config_global init.defaultBranch nmb &&
>  	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=env git init main-branch-env &&
>  	git -C main-branch-env symbolic-ref HEAD >actual &&
>  	grep env actual
>  '
>  
>  test_expect_success 'invalid default branch name' '
> -	test_must_fail env GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME="with space" \
> -		git init initial-branch-invalid 2>err &&
> +	test_must_fail env GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
> +		git -c init.defaultBranch="with space" \
> +			init initial-branch-invalid 2>err &&
>  	test_grep "invalid branch name" err
>  '
>  

Should we also add a test conditional on `WITH_BREAKING_CHANGES` to
verify that the new branch name is `main` as expected?

Thanks for working on this change, I'm very much supportive of this. It
feels like the ecosystem has already been moving into that direction, so
it's time that Git catches up with that change.

Patrick

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-02 11:36   ` Patrick Steinhardt
@ 2025-09-02 15:13     ` Phillip Wood
  2025-09-03  4:44       ` Patrick Steinhardt
  0 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-09-02 15:13 UTC (permalink / raw)
  To: Patrick Steinhardt, Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang

Hi Patrick

On 02/09/2025 12:36, Patrick Steinhardt wrote:
> On Wed, Aug 27, 2025 at 04:24:50PM +0100, Phillip Wood wrote:
>> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>>
>> The advice printed when init.defaultBranch is not set is
>> updated to say that the default will change to "main" in Git
>> 3.0. Building with WITH_BREAKING_CHANGES enabled removes the advice,
>> changes the default branch name is "main" and removes support for
> 
> s/is/to/
> 
>> GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME. The code in guess_remote_head()
> 
> As Junio already mentioned, I don't really think it's necessary to drop
> `GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME`, making much of this commit
> series obsolete.

I'm happy to drop those patches if there is a consensus that 
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is still useful after we've 
switched the branch name. I'm still not quite sure what it is useful for 
though. Removing it makes it clear that the tests are relying on the 
builtin default branch name that users see rather than some special name 
used only for tests.

>> that looks for "refs/heads/master" is left unchanged as that is only
>> called when the remote server does not support the symref capability
>> in the v0 protocol or the symref extension to the ls-refs list in the
>> v2 protocol. Such an old server is more likely to be using "master"
>> as the default branch name.
> 
> Hm, that's probably fair.

That's more or less a direct quote from Peff's mail 
<20250826111234.GA1925107@coredump.intra.peff.net>
>> diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
>> index f8d2eba061c..93922299321 100644
>> --- a/Documentation/BreakingChanges.adoc
>> +++ b/Documentation/BreakingChanges.adoc
>> @@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
>>   "reftable" format. Most importantly, alternative implementations of Git like
>>   JGit, libgit2 and Gitoxide need to support it.
>>   
>> +* The default branch name will be `main`. We have been warning that the default
> 
> Let's explicitly mention here that this is only going to be the case for
> _new_ repositories. It's obvious to us, but for others it might not be
> that existing repositories will not see any change in behaviour due to
> this.

Sure

>> diff --git a/advice.h b/advice.h
>> index 727dcecf4a3..fc1dc872049 100644
>> --- a/advice.h
>> +++ b/advice.h
>> @@ -18,7 +18,9 @@ enum advice_type {
>>   	ADVICE_AM_WORK_DIR,
>>   	ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME,
>>   	ADVICE_COMMIT_BEFORE_MERGE,
>> +#ifndef WITH_BREAKING_CHANGES
>>   	ADVICE_DEFAULT_BRANCH_NAME,
>> +#endif /* WITH_BREAKING_CHANGES */
>>   	ADVICE_DETACHED_HEAD,
>>   	ADVICE_DIVERGING,
>>   	ADVICE_FETCH_SET_HEAD_WARN,
> 
> Okay. I don't really think it's necessary to conditionally compile this,
> but it doesn't hurt much, either.

My thought was that by making it conditional, it makes it harder to 
forget to remove this after Git 3.0
>> diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
>> index 01823fd0f14..a21834043f3 100755
>> --- a/ci/run-build-and-tests.sh
>> +++ b/ci/run-build-and-tests.sh
>> @@ -9,7 +9,6 @@ run_tests=t
>>   
>>   case "$jobname" in
>>   linux-breaking-changes)
>> -	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>>   	export WITH_BREAKING_CHANGES=YesPlease
>>   	;;
>>   linux-TEST-vars)
> 
> Nice.

Only if we remove GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME though? Part of 
the reason for removing it was to make it clear that the tests are using 
"main" when WITH_BREAKING_CHANGES is enabled.

>> diff --git a/refs.c b/refs.c
>> index 4ff55cf24f6..e73f63ff6b8 100644
>> --- a/refs.c
>> +++ b/refs.c
 >> [...]>> +#ifdef WITH_BREAKING_CHANGES
>> +		ret = xstrdup("main");
>> +		(void) quiet; /* Silence -Wunused-parameter */
> 
> We have the `MAYBE_UNUSED` attribute that you can apply to `int
> quiet` to avoid this cast.

Thanks, I didn't know we had that

>> diff --git a/t/t0001-init.sh b/t/t0001-init.sh
>> index f593c536874..7223a98773d 100755
>> --- a/t/t0001-init.sh
>> +++ b/t/t0001-init.sh
>> [...]
> Should we also add a test conditional on `WITH_BREAKING_CHANGES` to
> verify that the new branch name is `main` as expected?

If we remove GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME then all of the tests 
that rely on the branch name "main" are testing that. If we keep that 
variable then we should probably add a test that unsets 
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME and ensures the default branch name 
is "main"
> Thanks for working on this change, I'm very much supportive of this. It
> feels like the ecosystem has already been moving into that direction, so
> it's time that Git catches up with that change.

Thanks for your comments, I'll try and re-roll later this week.

Phillip


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-02 15:13     ` Phillip Wood
@ 2025-09-03  4:44       ` Patrick Steinhardt
  2025-09-03  9:54         ` Phillip Wood
  0 siblings, 1 reply; 39+ messages in thread
From: Patrick Steinhardt @ 2025-09-03  4:44 UTC (permalink / raw)
  To: phillip.wood; +Cc: git, Johannes Schindelin, Wing Huang

On Tue, Sep 02, 2025 at 04:13:27PM +0100, Phillip Wood wrote:
> On 02/09/2025 12:36, Patrick Steinhardt wrote:
> > On Wed, Aug 27, 2025 at 04:24:50PM +0100, Phillip Wood wrote:
> > > From: Phillip Wood <phillip.wood@dunelm.org.uk>
> > > 
> > > The advice printed when init.defaultBranch is not set is
> > > updated to say that the default will change to "main" in Git
> > > 3.0. Building with WITH_BREAKING_CHANGES enabled removes the advice,
> > > changes the default branch name is "main" and removes support for
> > 
> > s/is/to/
> > 
> > > GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME. The code in guess_remote_head()
> > 
> > As Junio already mentioned, I don't really think it's necessary to drop
> > `GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME`, making much of this commit
> > series obsolete.
> 
> I'm happy to drop those patches if there is a consensus that
> GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is still useful after we've switched
> the branch name. I'm still not quite sure what it is useful for though.
> Removing it makes it clear that the tests are relying on the builtin default
> branch name that users see rather than some special name used only for
> tests.

We may eventually want to remove the whole infra. But I just don't think
it's necessary as part of the Git 3.0 deprecation and that we can rather
do it as a follow-up once Git 3.0 is out of the door.

IIRC, the initial idea behind this variable was to adapt tests to not
even care what the default initial branch name is in the first place.
Tests should be agnostic of that name and use e.g. git-symbolic-ref(1)
to figure out what HEAD points to. So maybe we should follow through
with that idea and start refactoring tests into this direction so that
they never set or read the variable in the first place.

Could very well be that I misremember though.

Patrick

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-03  4:44       ` Patrick Steinhardt
@ 2025-09-03  9:54         ` Phillip Wood
  2025-09-03 11:51           ` Patrick Steinhardt
  2025-09-03 18:40           ` Junio C Hamano
  0 siblings, 2 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-03  9:54 UTC (permalink / raw)
  To: Patrick Steinhardt, phillip.wood; +Cc: git, Johannes Schindelin, Wing Huang

On 03/09/2025 05:44, Patrick Steinhardt wrote:
> On Tue, Sep 02, 2025 at 04:13:27PM +0100, Phillip Wood wrote:
>>
>> I'm happy to drop those patches if there is a consensus that
>> GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME is still useful after we've switched
>> the branch name. I'm still not quite sure what it is useful for though.
>> Removing it makes it clear that the tests are relying on the builtin default
>> branch name that users see rather than some special name used only for
>> tests.
> 
> We may eventually want to remove the whole infra. But I just don't think
> it's necessary as part of the Git 3.0 deprecation and that we can rather
> do it as a follow-up once Git 3.0 is out of the door.
> 
> IIRC, the initial idea behind this variable was to adapt tests to not
> even care what the default initial branch name is in the first place.

When the variable was introduced in 704fed9ea22 (tests: start moving to 
a different default main branch name, 2020-10-23) it was described as 
"This `GIT_TEST_*` variable is meant purely for the transitional period 
while the entire test suite is converted to use `main` as the initial 
branch name by default." The way it has been used is to allow tests to 
continue to hard code a fixed name for the default initial branch.

> Tests should be agnostic of that name and use e.g. git-symbolic-ref(1)
> to figure out what HEAD points to. So maybe we should follow through
> with that idea and start refactoring tests into this direction so that
> they never set or read the variable in the first place.

That might be a good direction for the future. The test suite could set 
TEST_DEFAULT_BRANCH to the default name and tests could use that rather 
setting GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME and hard coding the 
expected name or running 'git symbolic-ref'.

I'll drop the removal of GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME but I'd 
like to keep the patches that switch the tests from using "master" to 
"main". We've converted nearly all of the tests already so it seems a 
shame to leave a handful unconverted.

Thanks

Phillip

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-03  9:54         ` Phillip Wood
@ 2025-09-03 11:51           ` Patrick Steinhardt
  2025-09-03 18:40           ` Junio C Hamano
  1 sibling, 0 replies; 39+ messages in thread
From: Patrick Steinhardt @ 2025-09-03 11:51 UTC (permalink / raw)
  To: phillip.wood; +Cc: git, Johannes Schindelin, Wing Huang

On Wed, Sep 03, 2025 at 10:54:06AM +0100, Phillip Wood wrote:
> On 03/09/2025 05:44, Patrick Steinhardt wrote:
> > Tests should be agnostic of that name and use e.g. git-symbolic-ref(1)
> > to figure out what HEAD points to. So maybe we should follow through
> > with that idea and start refactoring tests into this direction so that
> > they never set or read the variable in the first place.
> 
> That might be a good direction for the future. The test suite could set
> TEST_DEFAULT_BRANCH to the default name and tests could use that rather
> setting GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME and hard coding the expected
> name or running 'git symbolic-ref'.
> 
> I'll drop the removal of GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME but I'd like
> to keep the patches that switch the tests from using "master" to "main".
> We've converted nearly all of the tests already so it seems a shame to leave
> a handful unconverted.

Fair enough.

Patrick

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-03  9:54         ` Phillip Wood
  2025-09-03 11:51           ` Patrick Steinhardt
@ 2025-09-03 18:40           ` Junio C Hamano
  2025-09-04  7:09             ` Patrick Steinhardt
  2025-09-04 13:27             ` Phillip Wood
  1 sibling, 2 replies; 39+ messages in thread
From: Junio C Hamano @ 2025-09-03 18:40 UTC (permalink / raw)
  To: Phillip Wood
  Cc: Patrick Steinhardt, phillip.wood, git, Johannes Schindelin,
	Wing Huang

Phillip Wood <phillip.wood123@gmail.com> writes:

> When the variable was introduced in 704fed9ea22 (tests: start moving
> to a different default main branch name, 2020-10-23) it was described
> as "This `GIT_TEST_*` variable is meant purely for the transitional
> period while the entire test suite is converted to use `main` as the
> initial branch name by default." The way it has been used is to allow
> tests to continue to hard code a fixed name for the default initial
> branch.

Yes, but ripping it out would mean that you make it much harder to
transition out of 'main' and move to the next correct name when the
need comes, wouldn't it?

> ... like to keep the patches that switch the tests from using
> "master" to "main".

I have no problem with that.  I am still unsure about that "reftable
cares about the name being 'master'" thing.  If that can live with
any 6 byte name, we may want to fix it to something different from
'master', for the sake of removing 'master'.  Perhaps 'banana' or
something?

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-03 18:40           ` Junio C Hamano
@ 2025-09-04  7:09             ` Patrick Steinhardt
  2025-09-04 13:30               ` Phillip Wood
  2025-09-04 13:27             ` Phillip Wood
  1 sibling, 1 reply; 39+ messages in thread
From: Patrick Steinhardt @ 2025-09-04  7:09 UTC (permalink / raw)
  To: Junio C Hamano
  Cc: Phillip Wood, phillip.wood, git, Johannes Schindelin, Wing Huang

On Wed, Sep 03, 2025 at 11:40:05AM -0700, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
> 
> > When the variable was introduced in 704fed9ea22 (tests: start moving
> > to a different default main branch name, 2020-10-23) it was described
> > as "This `GIT_TEST_*` variable is meant purely for the transitional
> > period while the entire test suite is converted to use `main` as the
> > initial branch name by default." The way it has been used is to allow
> > tests to continue to hard code a fixed name for the default initial
> > branch.
> 
> Yes, but ripping it out would mean that you make it much harder to
> transition out of 'main' and move to the next correct name when the
> need comes, wouldn't it?

I guess it depends. If we transition our tests towards becoming mostly
agnostic of the default branch name then we can strip out the whole
infra but still remain agile.

> > ... like to keep the patches that switch the tests from using
> > "master" to "main".
> 
> I have no problem with that.  I am still unsure about that "reftable
> cares about the name being 'master'" thing.  If that can live with
> any 6 byte name, we may want to fix it to something different from
> 'master', for the sake of removing 'master'.  Perhaps 'banana' or
> something?

Huh, did I miss anything? I scanned the thread for reftables but
couldn't find any discussion around it relying on a 6 byte name. Could
you maybe provide a pointer to what you are referring to?

Thanks!

Patrick

^ permalink raw reply	[flat|nested] 39+ messages in thread

* [PATCH v2 0/4] breaking changes: switch default initial branch name to "main"
  2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
                   ` (6 preceding siblings ...)
  2025-08-28 13:12 ` [PATCH 0/6] breaking changes: switch default initial branch name to "main" Johannes Schindelin
@ 2025-09-04 13:21 ` Phillip Wood
  2025-09-04 13:21   ` [PATCH v2 1/4] breaking-changes: switch default branch to main Phillip Wood
                     ` (4 more replies)
  7 siblings, 5 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:21 UTC (permalink / raw)
  To: git; +Cc: Johannes Schindelin, Wing Huang, Junio C Hamano,
	Patrick Steinhardt

From: Phillip Wood <phillip.wood@dunelm.org.uk>

This series switches the default branch name from "master" to "main"
when WITH_BREAKING_CHANGES is enabled. We have been warning that the
default name will change since 675704c74dd (init: provide useful advice
about init.defaultBranch, 2020-12-11) and the major git forges have all
switched their default branch name to "main", so I think it makes sense
to change the default branch name in git to match the wider ecosystem.

The first patch switches the default initial branch name to "main"
and the other three patches remove the last remaining instances of
GIT_TEST_DEFAULT_BRANCH_NAME=master from the test suite. Patch 2 is
quite large but is mechanically generated so it should be possible
to review it by checking that the changes can be reproduced. As this
series changes the default branch name it focuses on updating tests
that rely on the default branch name being "master", there are still
a number of tests that create a branch called "master".

Thanks to everyone who commented on V1, I have dropped the removal of
GIT_TEST_DEFAULT_BRANCH_NAME and the test changes related to that but
have kept the patches that remove GIT_TEST_DEFAULT_BRANCH_NAME=master.
The patches have been re-ordered so that the change to the default
initial branch name comes first. That patch now includes a test
for the default initial branch name and includes the changes to the
commit message and documentation suggested by Patrick and Junio. The
commit messages for the other patches have been reworded now that
GIT_TEST_DEFAULT_BRANCH_NAME is not being removed but the code changes
are the same.

This is an alternative to changing the branch name now as suggested in
https://lore.kernel.org<pull.1961.git.1756183921623.gitgitgadget@gmail.com

Base-Commit: f814da676ae46aac5be0a98b99373a76dee6cedb
Published-As: https://github.com/phillipwood/git/releases/tag/pw%2Finitial-branch-is-main%2Fv2
View-Changes-At: https://github.com/phillipwood/git/compare/f814da676...c4d89c376
Fetch-It-Via: git fetch https://github.com/phillipwood/git pw/initial-branch-is-main/v2


Phillip Wood (4):
  breaking-changes: switch default branch to main
  t4013: switch default branch name to main
  t9902: switch default branch name to main
  t0613: stop setting default initial branch

 Documentation/BreakingChanges.adoc            |   5 +
 Documentation/git-init.adoc                   |  12 +-
 advice.c                                      |   2 +
 advice.h                                      |   2 +
 ci/run-build-and-tests.sh                     |   1 -
 refs.c                                        |  15 +-
 t/t0001-init.sh                               |  18 +-
 t/t0613-reftable-write-options.sh             |  20 +-
 t/t4013-diff-various.sh                       | 228 +++++++++---------
 ...ree_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...iff.diff-tree_--cc_--patch-with-stat_main} |   2 +-
 ...r => diff.diff-tree_--cc_--shortstat_main} |   2 +-
 ...diff.diff-tree_--cc_--stat_--summary_main} |   2 +-
 ...master => diff.diff-tree_--cc_--stat_main} |   2 +-
 ...e_--cc_master => diff.diff-tree_--cc_main} |   2 +-
 ...master => diff.diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.diff-tree_-c_--stat_--summary_main} |   2 +-
 ...t_master => diff.diff-tree_-c_--stat_main} |   2 +-
 ...-tree_-c_master => diff.diff-tree_-c_main} |   2 +-
 ...-tree_-m_master => diff.diff-tree_-m_main} |   2 +-
 ...-p_-m_master => diff.diff-tree_-p_-m_main} |   2 +-
 t/t4013/diff.diff-tree_-p_main                |   2 +
 t/t4013/diff.diff-tree_-p_master              |   2 -
 t/t4013/diff.diff-tree_main                   |   2 +
 t/t4013/diff.diff-tree_master                 |   2 -
 t/t4013/diff.diff_--dirstat_--cc_main~1_main  |   3 +
 .../diff.diff_--dirstat_--cc_master~1_master  |   3 -
 t/t4013/diff.diff_--dirstat_main~1_main~2     |   3 +
 t/t4013/diff.diff_--dirstat_master~1_master~2 |   3 -
 ...ff.diff_--line-prefix=abc_main_main^_side} |   2 +-
 ...master^_side => diff.diff_main_main^_side} |   2 +-
 ...mat-patch_--attach_--stdout_initial..main} |   2 +-
 ...at-patch_--attach_--stdout_initial..main^} |   2 +-
 ...e_--stdout_--numbered-files_initial..main} |   2 +-
 ...t_--subject-prefix=TESTCASE_initial..main} |   2 +-
 ...mat-patch_--inline_--stdout_initial..main} |   2 +-
 ...at-patch_--inline_--stdout_initial..main^} |   2 +-
 ...t-patch_--inline_--stdout_initial..main^^} |   2 +-
 ...--stdout_--cover-letter_-n_initial..main^} |   2 +-
 ...atch_--stdout_--no-numbered_initial..main} |   2 +-
 ...t-patch_--stdout_--numbered_initial..main} |   2 +-
 ... diff.format-patch_--stdout_initial..main} |   2 +-
 ...diff.format-patch_--stdout_initial..main^} |   2 +-
 ..._-m_-p_master => diff.log_--cc_-m_-p_main} |   2 +-
 t/t4013/diff.log_--decorate=full_--all        |   2 +-
 ..._--decorate=full_--clear-decorations_--all |   2 +-
 ...f.log_--decorate=full_--decorate-all_--all |   2 +-
 t/t4013/diff.log_--decorate_--all             |   2 +-
 ...f.log_--decorate_--clear-decorations_--all |   2 +-
 .../diff.log_--decorate_--decorate-all_--all  |   2 +-
 ... diff.log_--diff-merges=first-parent_main} |   2 +-
 ..._--diff-merges=off_-p_--first-parent_main} |   2 +-
 ..._--first-parent_--diff-merges=off_-p_main} |   2 +-
 ...g_--no-diff-merges_-p_--first-parent_main} |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...master => diff.log_--patch-with-stat_main} |   2 +-
 ...> diff.log_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...g_--root_--patch-with-stat_--summary_main} |   2 +-
 ...=> diff.log_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...root_-p_master => diff.log_--root_-p_main} |   2 +-
 ...log_--root_master => diff.log_--root_main} |   2 +-
 ...ter => diff.log_-GF_-p_--pickaxe-all_main} |   2 +-
 ...log_-GF_-p_master => diff.log_-GF_-p_main} |   2 +-
 ...{diff.log_-SF_master => diff.log_-GF_main} |   2 +-
 ...aster => diff.log_-IA_-IB_-I1_-I2_-p_main} |   2 +-
 ...log_-SF_-p_master => diff.log_-SF_-p_main} |   2 +-
 ...{diff.log_-GF_master => diff.log_-SF_main} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=0       |   2 +
 ...ount=2 => diff.log_-SF_main_--max-count=1} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=2       |   7 +
 t/t4013/diff.log_-SF_master_--max-count=0     |   2 -
 t/t4013/diff.log_-SF_master_--max-count=1     |   7 -
 ...iff.log_-S_F_master => diff.log_-S_F_main} |   2 +-
 ...cc_-m_-p_master => diff.log_-c_-m_-p_main} |   2 +-
 ...-m_--raw_master => diff.log_-m_--raw_main} |   2 +-
 ..._--stat_master => diff.log_-m_--stat_main} |   2 +-
 ...ter => diff.log_-m_-p_--first-parent_main} |   2 +-
 ...f.log_-m_-p_master => diff.log_-m_-p_main} |   2 +-
 ...ff.log_-p_--diff-merges=first-parent_main} |   2 +-
 ...master => diff.log_-p_--first-parent_main} |   2 +-
 .../{diff.log_-p_master => diff.log_-p_main}  |   2 +-
 t/t4013/{diff.log_master => diff.log_main}    |   2 +-
 ...iff.noellipses-diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.noellipses-whatchanged_--root_main} |   2 +-
 ...r => diff.noellipses-whatchanged_-SF_main} |   2 +-
 ...aster => diff.noellipses-whatchanged_main} |   2 +-
 ...t_master => diff.show_--first-parent_main} |   2 +-
 ...{diff.show_-c_master => diff.show_-c_main} |   2 +-
 ...{diff.show_-m_master => diff.show_-m_main} |   2 +-
 t/t4013/{diff.show_master => diff.show_main}  |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...> diff.whatchanged_--patch-with-stat_main} |   2 +-
 ...hatchanged_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...d_--root_--patch-with-stat_--summary_main} |   2 +-
 ...whatchanged_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...master => diff.whatchanged_--root_-p_main} |   2 +-
 ...ot_master => diff.whatchanged_--root_main} |   2 +-
 ...-p_master => diff.whatchanged_-SF_-p_main} |   2 +-
 ...d_-SF_master => diff.whatchanged_-SF_main} |   2 +-
 ...ged_-p_master => diff.whatchanged_-p_main} |   2 +-
 ...atchanged_master => diff.whatchanged_main} |   2 +-
 t/t9902-completion.sh                         |   6 +-
 t/test-lib.sh                                 |  11 +-
 107 files changed, 282 insertions(+), 244 deletions(-)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_--summary_master => diff.diff-tree_--cc_--patch-with-stat_--summary_main} (86%)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_master => diff.diff-tree_--cc_--patch-with-stat_main} (89%)
 rename t/t4013/{diff.diff-tree_--cc_--shortstat_master => diff.diff-tree_--cc_--shortstat_main} (65%)
 rename t/t4013/{diff.diff-tree_-c_--stat_--summary_master => diff.diff-tree_--cc_--stat_--summary_main} (71%)
 rename t/t4013/{diff.diff-tree_-c_--stat_master => diff.diff-tree_--cc_--stat_main} (76%)
 rename t/t4013/{diff.diff-tree_--cc_master => diff.diff-tree_--cc_main} (91%)
 rename t/t4013/{diff.diff-tree_-c_--abbrev_master => diff.diff-tree_-c_--abbrev_main} (83%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_--summary_master => diff.diff-tree_-c_--stat_--summary_main} (70%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_master => diff.diff-tree_-c_--stat_main} (75%)
 rename t/t4013/{diff.diff-tree_-c_master => diff.diff-tree_-c_main} (93%)
 rename t/t4013/{diff.diff-tree_-m_master => diff.diff-tree_-m_main} (96%)
 rename t/t4013/{diff.diff-tree_-p_-m_master => diff.diff-tree_-p_-m_main} (97%)
 create mode 100644 t/t4013/diff.diff-tree_-p_main
 delete mode 100644 t/t4013/diff.diff-tree_-p_master
 create mode 100644 t/t4013/diff.diff-tree_main
 delete mode 100644 t/t4013/diff.diff-tree_master
 create mode 100644 t/t4013/diff.diff_--dirstat_--cc_main~1_main
 delete mode 100644 t/t4013/diff.diff_--dirstat_--cc_master~1_master
 create mode 100644 t/t4013/diff.diff_--dirstat_main~1_main~2
 delete mode 100644 t/t4013/diff.diff_--dirstat_master~1_master~2
 rename t/t4013/{diff.diff_--line-prefix=abc_master_master^_side => diff.diff_--line-prefix=abc_main_main^_side} (87%)
 rename t/t4013/{diff.diff_master_master^_side => diff.diff_main_main^_side} (89%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master => diff.format-patch_--attach_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master^ => diff.format-patch_--attach_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--numbered-files_initial..master => diff.format-patch_--inline_--stdout_--numbered-files_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master => diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master => diff.format-patch_--inline_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^ => diff.format-patch_--inline_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^^ => diff.format-patch_--inline_--stdout_initial..main^^} (95%)
 rename t/t4013/{diff.format-patch_--stdout_--cover-letter_-n_initial..master^ => diff.format-patch_--stdout_--cover-letter_-n_initial..main^} (96%)
 rename t/t4013/{diff.format-patch_--stdout_--no-numbered_initial..master => diff.format-patch_--stdout_--no-numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_--numbered_initial..master => diff.format-patch_--stdout_--numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master => diff.format-patch_--stdout_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master^ => diff.format-patch_--stdout_initial..main^} (96%)
 rename t/t4013/{diff.log_-c_-m_-p_master => diff.log_--cc_-m_-p_main} (99%)
 rename t/t4013/{diff.log_--diff-merges=first-parent_master => diff.log_--diff-merges=first-parent_main} (95%)
 rename t/t4013/{diff.log_--no-diff-merges_-p_--first-parent_master => diff.log_--diff-merges=off_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--first-parent_--diff-merges=off_-p_master => diff.log_--first-parent_--diff-merges=off_-p_main} (95%)
 rename t/t4013/{diff.log_--diff-merges=off_-p_--first-parent_master => diff.log_--no-diff-merges_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--patch-with-stat_--summary_master_--_dir_ => diff.log_--patch-with-stat_--summary_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--patch-with-stat_master => diff.log_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--patch-with-stat_master_--_dir_ => diff.log_--patch-with-stat_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--root_--cc_--patch-with-stat_--summary_master => diff.log_--root_--cc_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_--summary_master => diff.log_--root_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_master => diff.log_--root_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--root_-c_--patch-with-stat_--summary_master => diff.log_--root_-c_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_-p_master => diff.log_--root_-p_main} (98%)
 rename t/t4013/{diff.log_--root_master => diff.log_--root_main} (96%)
 rename t/t4013/{diff.log_-GF_-p_--pickaxe-all_master => diff.log_-GF_-p_--pickaxe-all_main} (90%)
 rename t/t4013/{diff.log_-GF_-p_master => diff.log_-GF_-p_main} (91%)
 rename t/t4013/{diff.log_-SF_master => diff.log_-GF_main} (86%)
 rename t/t4013/{diff.log_-IA_-IB_-I1_-I2_-p_master => diff.log_-IA_-IB_-I1_-I2_-p_main} (97%)
 rename t/t4013/{diff.log_-SF_-p_master => diff.log_-SF_-p_main} (91%)
 rename t/t4013/{diff.log_-GF_master => diff.log_-SF_main} (86%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=0
 rename t/t4013/{diff.log_-SF_master_--max-count=2 => diff.log_-SF_main_--max-count=1} (79%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=2
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=0
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=1
 rename t/t4013/{diff.log_-S_F_master => diff.log_-S_F_main} (86%)
 rename t/t4013/{diff.log_--cc_-m_-p_master => diff.log_-c_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-m_--raw_master => diff.log_-m_--raw_main} (98%)
 rename t/t4013/{diff.log_-m_--stat_master => diff.log_-m_--stat_main} (98%)
 rename t/t4013/{diff.log_-m_-p_--first-parent_master => diff.log_-m_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-m_-p_master => diff.log_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-p_--diff-merges=first-parent_master => diff.log_-p_--diff-merges=first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_--first-parent_master => diff.log_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_master => diff.log_-p_main} (98%)
 rename t/t4013/{diff.log_master => diff.log_main} (97%)
 rename t/t4013/{diff.noellipses-diff-tree_-c_--abbrev_master => diff.noellipses-diff-tree_-c_--abbrev_main} (81%)
 rename t/t4013/{diff.noellipses-whatchanged_--root_master => diff.noellipses-whatchanged_--root_main} (96%)
 rename t/t4013/{diff.noellipses-whatchanged_-SF_master => diff.noellipses-whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.noellipses-whatchanged_master => diff.noellipses-whatchanged_main} (96%)
 rename t/t4013/{diff.show_--first-parent_master => diff.show_--first-parent_main} (92%)
 rename t/t4013/{diff.show_-c_master => diff.show_-c_main} (95%)
 rename t/t4013/{diff.show_-m_master => diff.show_-m_main} (98%)
 rename t/t4013/{diff.show_master => diff.show_main} (96%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_--summary_master_--_dir_ => diff.whatchanged_--patch-with-stat_--summary_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master => diff.whatchanged_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master_--_dir_ => diff.whatchanged_--patch-with-stat_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master => diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_--summary_master => diff.whatchanged_--root_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_master => diff.whatchanged_--root_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-c_--patch-with-stat_--summary_master => diff.whatchanged_--root_-c_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-p_master => diff.whatchanged_--root_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_--root_master => diff.whatchanged_--root_main} (97%)
 rename t/t4013/{diff.whatchanged_-SF_-p_master => diff.whatchanged_-SF_-p_main} (89%)
 rename t/t4013/{diff.whatchanged_-SF_master => diff.whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.whatchanged_-p_master => diff.whatchanged_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_master => diff.whatchanged_main} (97%)

Range-diff against v1:
1:  7c20f7693f4 < -:  ----------- t0018: switch default branch name to main
6:  487d1a33130 ! 1:  6986375dc37 breaking-changes: switch default branch to main
    @@ Commit message
         breaking-changes: switch default branch to main
     
         Since 1296cbe4b46 (init: document `init.defaultBranch` better,
    -    2020-12-11) "git-init.adoc" has advertized that the default name
    +    2020-12-11) "git-init.adoc" has advertised that the default name
         of the initial branch may change in the future. The name "main"
    -    is chosen to match the default used by the big git forge web sites.
    +    is chosen to match the default used by the big Git forge web sites.
     
    -    The advice printed when init.defaultBranch is not set is
    -    updated to say that the default will change to "main" in Git
    -    3.0. Building with WITH_BREAKING_CHANGES enabled removes the advice,
    -    changes the default branch name is "main" and removes support for
    -    GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME. The code in guess_remote_head()
    +    The advice printed when init.defaultBranch is not set is updated
    +    to say that the default will change to "main" in Git 3.0. Building
    +    with WITH_BREAKING_CHANGES enabled removes the advice and changes
    +    the default branch name to "main". The code in guess_remote_head()
         that looks for "refs/heads/master" is left unchanged as that is only
         called when the remote server does not support the symref capability
         in the v0 protocol or the symref extension to the ls-refs list in the
    @@ Documentation/BreakingChanges.adoc: A prerequisite for this change is that the e
      "reftable" format. Most importantly, alternative implementations of Git like
      JGit, libgit2 and Gitoxide need to support it.
      
    -+* The default branch name will be `main`. We have been warning that the default
    -+  name will change since 675704c74dd (init: provide useful advice about
    -+  init.defaultBranch, 2020-12-11). The new name matches the default branch name
    -+  used by many of the big git forges.
    ++* In new repositories the default branch name will be `main`. We have been
    ++  warning that the default name will change since 675704c74dd (init: provide
    ++  useful advice about init.defaultBranch, 2020-12-11).  The new name matches
    ++  the default branch name used by many of the big Git forges.
     +
      === Removals
      
    @@ Documentation/git-init.adoc: If this is a reinitialization, the repository will
     +(currently `master`, but this will change to `main` when Git 3.0 is released).
     +endif::with-breaking-changes[]
     +ifdef::with-breaking-changes[]
    -+(`main`).
    ++`main`.
     +endif::with-breaking-changes[]
     +The default name can be customized via the `init.defaultBranch` configuration
     +variable.
    @@ refs.c: static const char default_branch_name_advice[] = N_(
      );
     +#endif /* WITH_BREAKING_CHANGES */
      
    - char *repo_default_branch_name(struct repository *r, int quiet)
    +-char *repo_default_branch_name(struct repository *r, int quiet)
    ++char *repo_default_branch_name(struct repository *r, MAYBE_UNUSED int quiet)
      {
      	const char *config_key = "init.defaultbranch";
      	const char *config_display_key = "init.defaultBranch";
    - 	char *ret = NULL, *full_ref;
    -+#ifndef WITH_BREAKING_CHANGES
    - 	const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME");
    +@@ refs.c: char *repo_default_branch_name(struct repository *r, int quiet)
      
      	if (env && *env)
      		ret = xstrdup(env);
     -	else if (repo_config_get_string(r, config_key, &ret) < 0)
    -+#endif /* WITH_BREAKING_CHANGES */
     +	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
      		die(_("could not retrieve `%s`"), config_display_key);
      
      	if (!ret) {
     +#ifdef WITH_BREAKING_CHANGES
     +		ret = xstrdup("main");
    -+		(void) quiet; /* Silence -Wunused-parameter */
     +#else
      		ret = xstrdup("master");
      		if (!quiet)
    @@ t/t0001-init.sh: test_expect_success 'advice on unconfigured init.defaultBranch
      	test_grep ! "hint: " err
      '
      
    --test_expect_success 'overridden default main branch name (env)' '
    -+test_expect_success !WITH_BREAKING_CHANGES 'overridden default main branch name (env)' '
    ++test_expect_success 'default branch name' '
    ++	if test_have_prereq WITH_BREAKING_CHANGES
    ++	then
    ++		expect=main
    ++	else
    ++		expect=master
    ++	fi &&
    ++	echo "refs/heads/$expect" >expect &&
    ++	(
    ++		sane_unset GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME &&
    ++		git init default-initial-branch-name
    ++	) &&
    ++	git -C default-initial-branch-name symbolic-ref HEAD >actual &&
    ++	test_cmp expect actual
    ++'
    ++
    + test_expect_success 'overridden default main branch name (env)' '
      	test_config_global init.defaultBranch nmb &&
      	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=env git init main-branch-env &&
    - 	git -C main-branch-env symbolic-ref HEAD >actual &&
    - 	grep env actual
    - '
    - 
    - test_expect_success 'invalid default branch name' '
    --	test_must_fail env GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME="with space" \
    --		git init initial-branch-invalid 2>err &&
    -+	test_must_fail env GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
    -+		git -c init.defaultBranch="with space" \
    -+			init initial-branch-invalid 2>err &&
    - 	test_grep "invalid branch name" err
    - '
    - 
     
      ## t/test-lib.sh ##
     @@ t/test-lib.sh: then
    @@ t/test-lib.sh: then
     +	# transitory "git init" warning under --verbose.
     +	: ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
     +	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
    -+else
    -+	# Unset the default branch name that is set in many test scripts
    -+	# before sourcing this file.
    -+	unset GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
     +fi
      
      ################################################################
2:  c445cf9c65e ! 2:  2a112a1b983 t4013: switch default branch name to main
    @@ Metadata
      ## Commit message ##
         t4013: switch default branch name to main
     
    -    In preparation for removing TEST_GIT_DEFAULT_INITIAL_BRANCH in Git 3.0
    -    switch the default branch name to main.
    -
    -    The changes here are purely mechanical replacing 'master' with 'main'
    +    Remove one of the last remaining uses of
    +    "TEST_GIT_DEFAULT_INITIAL_BRANCH= main" in the test suite. We have
    +    been steadily be converting tests from using "master" as the default
    +    branch name since the introduction of TEST_GIT_DEFAULT_INITIAL_BRANCH
    +    in 704fed9ea22 (tests: start moving to a different default main branch
    +    name, 2020-10-23) The changes here are purely mechanical replacing
    +    "master" with "main"
     
         Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
     
3:  d8a382a79eb ! 3:  f1bf01e1322 t9902: switch default branch name to main
    @@ Metadata
      ## Commit message ##
         t9902: switch default branch name to main
     
    -    In preparation for removing GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME in
    -    Git 3.0 update the bash completion tests that rely on the default
    -    branch name being master.
    +    Remove the penultimate use of "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
    +    main" in our test suite. We have slowly been removing these ever since
    +    we started to switch the default branch name used in tests to "main".
     
         Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
     
4:  bbf79dd64fe ! 4:  c4d89c3761b t0613: stop setting default initial branch
    @@ Metadata
      ## Commit message ##
         t0613: stop setting default initial branch
     
    -    As the tests are all run in separate repositories, set the branch
    -    name to "master" when creating the repository for the tests where
    -    the result depends on the branch name. This is in preparation for
    -    removing GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME in Git 3.0.
    +    As the tests are all run in separate repositories, set the branch name
    +    to "master" when creating the repository for the tests where the result
    +    depends on the branch name. This reduceds the number of tests that
    +    depend on the default branch name being "master" and removes the last
    +    instance of a test file using "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
    +    master".
     
         Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
     
    @@ t/t0613-reftable-write-options.sh: export GIT_TEST_REFTABLE_AUTOCOMPACTION
      test_expect_success 'default write options' '
      	test_when_finished "rm -rf repo" &&
     -	git init repo &&
    ++	# Block sizes also depend on the actual refs we write, so we force
    ++	# "master" to be the default initial branch name.
     +	git init --initial-branch master repo &&
      	(
      		cd repo &&
5:  a46c0dd25a6 < -:  ----------- t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply	[flat|nested] 39+ messages in thread

* [PATCH v2 1/4] breaking-changes: switch default branch to main
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
@ 2025-09-04 13:21   ` Phillip Wood
  2025-09-04 17:40     ` Junio C Hamano
  2025-09-04 13:21   ` [PATCH v2 2/4] t4013: switch default branch name " Phillip Wood
                     ` (3 subsequent siblings)
  4 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:21 UTC (permalink / raw)
  To: git
  Cc: Johannes Schindelin, Wing Huang, Junio C Hamano,
	Patrick Steinhardt, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Since 1296cbe4b46 (init: document `init.defaultBranch` better,
2020-12-11) "git-init.adoc" has advertised that the default name
of the initial branch may change in the future. The name "main"
is chosen to match the default used by the big Git forge web sites.

The advice printed when init.defaultBranch is not set is updated
to say that the default will change to "main" in Git 3.0. Building
with WITH_BREAKING_CHANGES enabled removes the advice and changes
the default branch name to "main". The code in guess_remote_head()
that looks for "refs/heads/master" is left unchanged as that is only
called when the remote server does not support the symref capability
in the v0 protocol or the symref extension to the ls-refs list in the
v2 protocol. Such an old server is more likely to be using "master"
as the default branch name.

With the exception of the "git-init.adoc" the documentation is left
unchanged. I had hoped to parameterize the name of the default branch
by using an asciidoc attribute. Unfortunately attribute expansion
is inhibited by backticks and we use backticks to mark up ref names
so that idea does not work. As the changes to git-init.adoc show
inserting ifdef's around each instance of the branch name "master"
is cumbersome and makes the documentation sources harder to read.

Apart from "git-init.adoc" there are some other files where "master" is
used as the name of the initial branch rather than as an example of a
branch name such as "user-manual.adoc" and "gitcore-tutorial.adoc". The
name appears a lot in those so updating it with ifdef's is not really
practical. We can update that document in the 3.0 release cycle. The
other documentation where master is used as an example branch name
can be gradually converted over time.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 Documentation/BreakingChanges.adoc |  5 +++++
 Documentation/git-init.adoc        | 12 +++++++++---
 advice.c                           |  2 ++
 advice.h                           |  2 ++
 ci/run-build-and-tests.sh          |  1 -
 refs.c                             | 15 +++++++++++----
 t/t0001-init.sh                    | 18 +++++++++++++++++-
 t/test-lib.sh                      | 11 +++++++----
 8 files changed, 53 insertions(+), 13 deletions(-)

diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
index f8d2eba061c..eb92e6f6a7d 100644
--- a/Documentation/BreakingChanges.adoc
+++ b/Documentation/BreakingChanges.adoc
@@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
 "reftable" format. Most importantly, alternative implementations of Git like
 JGit, libgit2 and Gitoxide need to support it.
 
+* In new repositories the default branch name will be `main`. We have been
+  warning that the default name will change since 675704c74dd (init: provide
+  useful advice about init.defaultBranch, 2020-12-11).  The new name matches
+  the default branch name used by many of the big Git forges.
+
 === Removals
 
 * Support for grafting commits has long been superseded by git-replace(1).
diff --git a/Documentation/git-init.adoc b/Documentation/git-init.adoc
index a0dffba665f..bab99b9b477 100644
--- a/Documentation/git-init.adoc
+++ b/Documentation/git-init.adoc
@@ -77,9 +77,15 @@ If this is a reinitialization, the repository will be moved to the specified pat
 `-b <branch-name>`::
 `--initial-branch=<branch-name>`::
 Use _<branch-name>_ for the initial branch in the newly created
-repository.  If not specified, fall back to the default name (currently
-`master`, but this is subject to change in the future; the name can be
-customized via the `init.defaultBranch` configuration variable).
+repository.  If not specified, fall back to the default name
+ifndef::with-breaking-changes[]
+(currently `master`, but this will change to `main` when Git 3.0 is released).
+endif::with-breaking-changes[]
+ifdef::with-breaking-changes[]
+`main`.
+endif::with-breaking-changes[]
+The default name can be customized via the `init.defaultBranch` configuration
+variable.
 
 `--shared[=(false|true|umask|group|all|world|everybody|<perm>)]`::
 
diff --git a/advice.c b/advice.c
index e5f0ff84491..48c49ee4145 100644
--- a/advice.c
+++ b/advice.c
@@ -51,7 +51,9 @@ static struct {
 	[ADVICE_AM_WORK_DIR] 				= { "amWorkDir" },
 	[ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME] 	= { "checkoutAmbiguousRemoteBranchName" },
 	[ADVICE_COMMIT_BEFORE_MERGE]			= { "commitBeforeMerge" },
+#ifndef WITH_BREAKING_CHANGES
 	[ADVICE_DEFAULT_BRANCH_NAME]			= { "defaultBranchName" },
+#endif /* WITH_BREAKING_CHANGES */
 	[ADVICE_DETACHED_HEAD]				= { "detachedHead" },
 	[ADVICE_DIVERGING]				= { "diverging" },
 	[ADVICE_FETCH_SET_HEAD_WARN]			= { "fetchRemoteHEADWarn" },
diff --git a/advice.h b/advice.h
index 727dcecf4a3..fc1dc872049 100644
--- a/advice.h
+++ b/advice.h
@@ -18,7 +18,9 @@ enum advice_type {
 	ADVICE_AM_WORK_DIR,
 	ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME,
 	ADVICE_COMMIT_BEFORE_MERGE,
+#ifndef WITH_BREAKING_CHANGES
 	ADVICE_DEFAULT_BRANCH_NAME,
+#endif /* WITH_BREAKING_CHANGES */
 	ADVICE_DETACHED_HEAD,
 	ADVICE_DIVERGING,
 	ADVICE_FETCH_SET_HEAD_WARN,
diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
index 01823fd0f14..a21834043f3 100755
--- a/ci/run-build-and-tests.sh
+++ b/ci/run-build-and-tests.sh
@@ -9,7 +9,6 @@ run_tests=t
 
 case "$jobname" in
 linux-breaking-changes)
-	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 	export WITH_BREAKING_CHANGES=YesPlease
 	;;
 linux-TEST-vars)
diff --git a/refs.c b/refs.c
index 4ff55cf24f6..149a8d1cec1 100644
--- a/refs.c
+++ b/refs.c
@@ -627,10 +627,12 @@ void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
 		strvec_pushf(prefixes, *p, len, prefix);
 }
 
+#ifndef WITH_BREAKING_CHANGES
 static const char default_branch_name_advice[] = N_(
 "Using '%s' as the name for the initial branch. This default branch name\n"
-"is subject to change. To configure the initial branch name to use in all\n"
-"of your new repositories, which will suppress this warning, call:\n"
+"will change to \"main\" in Git 3.0. To configure the initial branch name\n"
+"to use in all of your new repositories, which will suppress this warning,\n"
+"call:\n"
 "\n"
 "\tgit config --global init.defaultBranch <name>\n"
 "\n"
@@ -639,8 +641,9 @@ static const char default_branch_name_advice[] = N_(
 "\n"
 "\tgit branch -m <name>\n"
 );
+#endif /* WITH_BREAKING_CHANGES */
 
-char *repo_default_branch_name(struct repository *r, int quiet)
+char *repo_default_branch_name(struct repository *r, MAYBE_UNUSED int quiet)
 {
 	const char *config_key = "init.defaultbranch";
 	const char *config_display_key = "init.defaultBranch";
@@ -649,14 +652,18 @@ char *repo_default_branch_name(struct repository *r, int quiet)
 
 	if (env && *env)
 		ret = xstrdup(env);
-	else if (repo_config_get_string(r, config_key, &ret) < 0)
+	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
 		die(_("could not retrieve `%s`"), config_display_key);
 
 	if (!ret) {
+#ifdef WITH_BREAKING_CHANGES
+		ret = xstrdup("main");
+#else
 		ret = xstrdup("master");
 		if (!quiet)
 			advise_if_enabled(ADVICE_DEFAULT_BRANCH_NAME,
 					  _(default_branch_name_advice), ret);
+#endif /* WITH_BREAKING_CHANGES */
 	}
 
 	full_ref = xstrfmt("refs/heads/%s", ret);
diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index f593c536874..df0040b9ace 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -868,7 +868,7 @@ test_expect_success 'overridden default initial branch name (config)' '
 	grep nmb actual
 '
 
-test_expect_success 'advice on unconfigured init.defaultBranch' '
+test_expect_success !WITH_BREAKING_CHANGES 'advice on unconfigured init.defaultBranch' '
 	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= git -c color.advice=always \
 		init unconfigured-default-branch-name 2>err &&
 	test_decode_color <err >decoded &&
@@ -883,6 +883,22 @@ test_expect_success 'advice on unconfigured init.defaultBranch disabled' '
 	test_grep ! "hint: " err
 '
 
+test_expect_success 'default branch name' '
+	if test_have_prereq WITH_BREAKING_CHANGES
+	then
+		expect=main
+	else
+		expect=master
+	fi &&
+	echo "refs/heads/$expect" >expect &&
+	(
+		sane_unset GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME &&
+		git init default-initial-branch-name
+	) &&
+	git -C default-initial-branch-name symbolic-ref HEAD >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success 'overridden default main branch name (env)' '
 	test_config_global init.defaultBranch nmb &&
 	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=env git init main-branch-env &&
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 621cd31ae1d..b191954c3c4 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -127,10 +127,13 @@ then
 	export GIT_TEST_DISALLOW_ABBREVIATED_OPTIONS
 fi
 
-# Explicitly set the default branch name for testing, to avoid the
-# transitory "git init" warning under --verbose.
-: ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
-export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+if test -z "$WITH_BREAKING_CHANGES"
+then
+	# Explicitly set the default branch name for testing, to avoid the
+	# transitory "git init" warning under --verbose.
+	: ${GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME:=master}
+	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+fi
 
 ################################################################
 # It appears that people try to run tests without building...
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH v2 2/4] t4013: switch default branch name to main
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
  2025-09-04 13:21   ` [PATCH v2 1/4] breaking-changes: switch default branch to main Phillip Wood
@ 2025-09-04 13:21   ` Phillip Wood
  2025-09-04 13:21   ` [PATCH v2 3/4] t9902: " Phillip Wood
                     ` (2 subsequent siblings)
  4 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:21 UTC (permalink / raw)
  To: git
  Cc: Johannes Schindelin, Wing Huang, Junio C Hamano,
	Patrick Steinhardt, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Remove one of the last remaining uses of
"TEST_GIT_DEFAULT_INITIAL_BRANCH= main" in the test suite. We have
been steadily be converting tests from using "master" as the default
branch name since the introduction of TEST_GIT_DEFAULT_INITIAL_BRANCH
in 704fed9ea22 (tests: start moving to a different default main branch
name, 2020-10-23) The changes here are purely mechanical replacing
"master" with "main"

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t4013-diff-various.sh                       | 228 +++++++++---------
 ...ree_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...iff.diff-tree_--cc_--patch-with-stat_main} |   2 +-
 ...r => diff.diff-tree_--cc_--shortstat_main} |   2 +-
 ...diff.diff-tree_--cc_--stat_--summary_main} |   2 +-
 ...master => diff.diff-tree_--cc_--stat_main} |   2 +-
 ...e_--cc_master => diff.diff-tree_--cc_main} |   2 +-
 ...master => diff.diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.diff-tree_-c_--stat_--summary_main} |   2 +-
 ...t_master => diff.diff-tree_-c_--stat_main} |   2 +-
 ...-tree_-c_master => diff.diff-tree_-c_main} |   2 +-
 ...-tree_-m_master => diff.diff-tree_-m_main} |   2 +-
 ...-p_-m_master => diff.diff-tree_-p_-m_main} |   2 +-
 t/t4013/diff.diff-tree_-p_main                |   2 +
 t/t4013/diff.diff-tree_-p_master              |   2 -
 t/t4013/diff.diff-tree_main                   |   2 +
 t/t4013/diff.diff-tree_master                 |   2 -
 t/t4013/diff.diff_--dirstat_--cc_main~1_main  |   3 +
 .../diff.diff_--dirstat_--cc_master~1_master  |   3 -
 t/t4013/diff.diff_--dirstat_main~1_main~2     |   3 +
 t/t4013/diff.diff_--dirstat_master~1_master~2 |   3 -
 ...ff.diff_--line-prefix=abc_main_main^_side} |   2 +-
 ...master^_side => diff.diff_main_main^_side} |   2 +-
 ...mat-patch_--attach_--stdout_initial..main} |   2 +-
 ...at-patch_--attach_--stdout_initial..main^} |   2 +-
 ...e_--stdout_--numbered-files_initial..main} |   2 +-
 ...t_--subject-prefix=TESTCASE_initial..main} |   2 +-
 ...mat-patch_--inline_--stdout_initial..main} |   2 +-
 ...at-patch_--inline_--stdout_initial..main^} |   2 +-
 ...t-patch_--inline_--stdout_initial..main^^} |   2 +-
 ...--stdout_--cover-letter_-n_initial..main^} |   2 +-
 ...atch_--stdout_--no-numbered_initial..main} |   2 +-
 ...t-patch_--stdout_--numbered_initial..main} |   2 +-
 ... diff.format-patch_--stdout_initial..main} |   2 +-
 ...diff.format-patch_--stdout_initial..main^} |   2 +-
 ..._-m_-p_master => diff.log_--cc_-m_-p_main} |   2 +-
 t/t4013/diff.log_--decorate=full_--all        |   2 +-
 ..._--decorate=full_--clear-decorations_--all |   2 +-
 ...f.log_--decorate=full_--decorate-all_--all |   2 +-
 t/t4013/diff.log_--decorate_--all             |   2 +-
 ...f.log_--decorate_--clear-decorations_--all |   2 +-
 .../diff.log_--decorate_--decorate-all_--all  |   2 +-
 ... diff.log_--diff-merges=first-parent_main} |   2 +-
 ..._--diff-merges=off_-p_--first-parent_main} |   2 +-
 ..._--first-parent_--diff-merges=off_-p_main} |   2 +-
 ...g_--no-diff-merges_-p_--first-parent_main} |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...master => diff.log_--patch-with-stat_main} |   2 +-
 ...> diff.log_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...g_--root_--patch-with-stat_--summary_main} |   2 +-
 ...=> diff.log_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...root_-p_master => diff.log_--root_-p_main} |   2 +-
 ...log_--root_master => diff.log_--root_main} |   2 +-
 ...ter => diff.log_-GF_-p_--pickaxe-all_main} |   2 +-
 ...log_-GF_-p_master => diff.log_-GF_-p_main} |   2 +-
 ...{diff.log_-SF_master => diff.log_-GF_main} |   2 +-
 ...aster => diff.log_-IA_-IB_-I1_-I2_-p_main} |   2 +-
 ...log_-SF_-p_master => diff.log_-SF_-p_main} |   2 +-
 ...{diff.log_-GF_master => diff.log_-SF_main} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=0       |   2 +
 ...ount=2 => diff.log_-SF_main_--max-count=1} |   2 +-
 t/t4013/diff.log_-SF_main_--max-count=2       |   7 +
 t/t4013/diff.log_-SF_master_--max-count=0     |   2 -
 t/t4013/diff.log_-SF_master_--max-count=1     |   7 -
 ...iff.log_-S_F_master => diff.log_-S_F_main} |   2 +-
 ...cc_-m_-p_master => diff.log_-c_-m_-p_main} |   2 +-
 ...-m_--raw_master => diff.log_-m_--raw_main} |   2 +-
 ..._--stat_master => diff.log_-m_--stat_main} |   2 +-
 ...ter => diff.log_-m_-p_--first-parent_main} |   2 +-
 ...f.log_-m_-p_master => diff.log_-m_-p_main} |   2 +-
 ...ff.log_-p_--diff-merges=first-parent_main} |   2 +-
 ...master => diff.log_-p_--first-parent_main} |   2 +-
 .../{diff.log_-p_master => diff.log_-p_main}  |   2 +-
 t/t4013/{diff.log_master => diff.log_main}    |   2 +-
 ...iff.noellipses-diff-tree_-c_--abbrev_main} |   2 +-
 ...> diff.noellipses-whatchanged_--root_main} |   2 +-
 ...r => diff.noellipses-whatchanged_-SF_main} |   2 +-
 ...aster => diff.noellipses-whatchanged_main} |   2 +-
 ...t_master => diff.show_--first-parent_main} |   2 +-
 ...{diff.show_-c_master => diff.show_-c_main} |   2 +-
 ...{diff.show_-m_master => diff.show_-m_main} |   2 +-
 t/t4013/{diff.show_master => diff.show_main}  |   2 +-
 ..._--patch-with-stat_--summary_main_--_dir_} |   2 +-
 ...> diff.whatchanged_--patch-with-stat_main} |   2 +-
 ...hatchanged_--patch-with-stat_main_--_dir_} |   2 +-
 ...oot_--cc_--patch-with-stat_--summary_main} |   2 +-
 ...d_--root_--patch-with-stat_--summary_main} |   2 +-
 ...whatchanged_--root_--patch-with-stat_main} |   2 +-
 ...-root_-c_--patch-with-stat_--summary_main} |   2 +-
 ...master => diff.whatchanged_--root_-p_main} |   2 +-
 ...ot_master => diff.whatchanged_--root_main} |   2 +-
 ...-p_master => diff.whatchanged_-SF_-p_main} |   2 +-
 ...d_-SF_master => diff.whatchanged_-SF_main} |   2 +-
 ...ged_-p_master => diff.whatchanged_-p_main} |   2 +-
 ...atchanged_master => diff.whatchanged_main} |   2 +-
 97 files changed, 217 insertions(+), 217 deletions(-)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_--summary_master => diff.diff-tree_--cc_--patch-with-stat_--summary_main} (86%)
 rename t/t4013/{diff.diff-tree_--cc_--patch-with-stat_master => diff.diff-tree_--cc_--patch-with-stat_main} (89%)
 rename t/t4013/{diff.diff-tree_--cc_--shortstat_master => diff.diff-tree_--cc_--shortstat_main} (65%)
 rename t/t4013/{diff.diff-tree_-c_--stat_--summary_master => diff.diff-tree_--cc_--stat_--summary_main} (71%)
 rename t/t4013/{diff.diff-tree_-c_--stat_master => diff.diff-tree_--cc_--stat_main} (76%)
 rename t/t4013/{diff.diff-tree_--cc_master => diff.diff-tree_--cc_main} (91%)
 rename t/t4013/{diff.diff-tree_-c_--abbrev_master => diff.diff-tree_-c_--abbrev_main} (83%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_--summary_master => diff.diff-tree_-c_--stat_--summary_main} (70%)
 rename t/t4013/{diff.diff-tree_--cc_--stat_master => diff.diff-tree_-c_--stat_main} (75%)
 rename t/t4013/{diff.diff-tree_-c_master => diff.diff-tree_-c_main} (93%)
 rename t/t4013/{diff.diff-tree_-m_master => diff.diff-tree_-m_main} (96%)
 rename t/t4013/{diff.diff-tree_-p_-m_master => diff.diff-tree_-p_-m_main} (97%)
 create mode 100644 t/t4013/diff.diff-tree_-p_main
 delete mode 100644 t/t4013/diff.diff-tree_-p_master
 create mode 100644 t/t4013/diff.diff-tree_main
 delete mode 100644 t/t4013/diff.diff-tree_master
 create mode 100644 t/t4013/diff.diff_--dirstat_--cc_main~1_main
 delete mode 100644 t/t4013/diff.diff_--dirstat_--cc_master~1_master
 create mode 100644 t/t4013/diff.diff_--dirstat_main~1_main~2
 delete mode 100644 t/t4013/diff.diff_--dirstat_master~1_master~2
 rename t/t4013/{diff.diff_--line-prefix=abc_master_master^_side => diff.diff_--line-prefix=abc_main_main^_side} (87%)
 rename t/t4013/{diff.diff_master_master^_side => diff.diff_main_main^_side} (89%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master => diff.format-patch_--attach_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--attach_--stdout_initial..master^ => diff.format-patch_--attach_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--numbered-files_initial..master => diff.format-patch_--inline_--stdout_--numbered-files_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master => diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main} (99%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master => diff.format-patch_--inline_--stdout_initial..main} (98%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^ => diff.format-patch_--inline_--stdout_initial..main^} (97%)
 rename t/t4013/{diff.format-patch_--inline_--stdout_initial..master^^ => diff.format-patch_--inline_--stdout_initial..main^^} (95%)
 rename t/t4013/{diff.format-patch_--stdout_--cover-letter_-n_initial..master^ => diff.format-patch_--stdout_--cover-letter_-n_initial..main^} (96%)
 rename t/t4013/{diff.format-patch_--stdout_--no-numbered_initial..master => diff.format-patch_--stdout_--no-numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_--numbered_initial..master => diff.format-patch_--stdout_--numbered_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master => diff.format-patch_--stdout_initial..main} (97%)
 rename t/t4013/{diff.format-patch_--stdout_initial..master^ => diff.format-patch_--stdout_initial..main^} (96%)
 rename t/t4013/{diff.log_-c_-m_-p_master => diff.log_--cc_-m_-p_main} (99%)
 rename t/t4013/{diff.log_--diff-merges=first-parent_master => diff.log_--diff-merges=first-parent_main} (95%)
 rename t/t4013/{diff.log_--no-diff-merges_-p_--first-parent_master => diff.log_--diff-merges=off_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--first-parent_--diff-merges=off_-p_master => diff.log_--first-parent_--diff-merges=off_-p_main} (95%)
 rename t/t4013/{diff.log_--diff-merges=off_-p_--first-parent_master => diff.log_--no-diff-merges_-p_--first-parent_main} (95%)
 rename t/t4013/{diff.log_--patch-with-stat_--summary_master_--_dir_ => diff.log_--patch-with-stat_--summary_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--patch-with-stat_master => diff.log_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--patch-with-stat_master_--_dir_ => diff.log_--patch-with-stat_main_--_dir_} (96%)
 rename t/t4013/{diff.log_--root_--cc_--patch-with-stat_--summary_master => diff.log_--root_--cc_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_--summary_master => diff.log_--root_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_--patch-with-stat_master => diff.log_--root_--patch-with-stat_main} (98%)
 rename t/t4013/{diff.log_--root_-c_--patch-with-stat_--summary_master => diff.log_--root_-c_--patch-with-stat_--summary_main} (98%)
 rename t/t4013/{diff.log_--root_-p_master => diff.log_--root_-p_main} (98%)
 rename t/t4013/{diff.log_--root_master => diff.log_--root_main} (96%)
 rename t/t4013/{diff.log_-GF_-p_--pickaxe-all_master => diff.log_-GF_-p_--pickaxe-all_main} (90%)
 rename t/t4013/{diff.log_-GF_-p_master => diff.log_-GF_-p_main} (91%)
 rename t/t4013/{diff.log_-SF_master => diff.log_-GF_main} (86%)
 rename t/t4013/{diff.log_-IA_-IB_-I1_-I2_-p_master => diff.log_-IA_-IB_-I1_-I2_-p_main} (97%)
 rename t/t4013/{diff.log_-SF_-p_master => diff.log_-SF_-p_main} (91%)
 rename t/t4013/{diff.log_-GF_master => diff.log_-SF_main} (86%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=0
 rename t/t4013/{diff.log_-SF_master_--max-count=2 => diff.log_-SF_main_--max-count=1} (79%)
 create mode 100644 t/t4013/diff.log_-SF_main_--max-count=2
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=0
 delete mode 100644 t/t4013/diff.log_-SF_master_--max-count=1
 rename t/t4013/{diff.log_-S_F_master => diff.log_-S_F_main} (86%)
 rename t/t4013/{diff.log_--cc_-m_-p_master => diff.log_-c_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-m_--raw_master => diff.log_-m_--raw_main} (98%)
 rename t/t4013/{diff.log_-m_--stat_master => diff.log_-m_--stat_main} (98%)
 rename t/t4013/{diff.log_-m_-p_--first-parent_master => diff.log_-m_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-m_-p_master => diff.log_-m_-p_main} (99%)
 rename t/t4013/{diff.log_-p_--diff-merges=first-parent_master => diff.log_-p_--diff-merges=first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_--first-parent_master => diff.log_-p_--first-parent_main} (97%)
 rename t/t4013/{diff.log_-p_master => diff.log_-p_main} (98%)
 rename t/t4013/{diff.log_master => diff.log_main} (97%)
 rename t/t4013/{diff.noellipses-diff-tree_-c_--abbrev_master => diff.noellipses-diff-tree_-c_--abbrev_main} (81%)
 rename t/t4013/{diff.noellipses-whatchanged_--root_master => diff.noellipses-whatchanged_--root_main} (96%)
 rename t/t4013/{diff.noellipses-whatchanged_-SF_master => diff.noellipses-whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.noellipses-whatchanged_master => diff.noellipses-whatchanged_main} (96%)
 rename t/t4013/{diff.show_--first-parent_master => diff.show_--first-parent_main} (92%)
 rename t/t4013/{diff.show_-c_master => diff.show_-c_main} (95%)
 rename t/t4013/{diff.show_-m_master => diff.show_-m_main} (98%)
 rename t/t4013/{diff.show_master => diff.show_main} (96%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_--summary_master_--_dir_ => diff.whatchanged_--patch-with-stat_--summary_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master => diff.whatchanged_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--patch-with-stat_master_--_dir_ => diff.whatchanged_--patch-with-stat_main_--_dir_} (94%)
 rename t/t4013/{diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master => diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_--summary_master => diff.whatchanged_--root_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_--patch-with-stat_master => diff.whatchanged_--root_--patch-with-stat_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-c_--patch-with-stat_--summary_master => diff.whatchanged_--root_-c_--patch-with-stat_--summary_main} (97%)
 rename t/t4013/{diff.whatchanged_--root_-p_master => diff.whatchanged_--root_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_--root_master => diff.whatchanged_--root_main} (97%)
 rename t/t4013/{diff.whatchanged_-SF_-p_master => diff.whatchanged_-SF_-p_main} (89%)
 rename t/t4013/{diff.whatchanged_-SF_master => diff.whatchanged_-SF_main} (86%)
 rename t/t4013/{diff.whatchanged_-p_master => diff.whatchanged_-p_main} (98%)
 rename t/t4013/{diff.whatchanged_master => diff.whatchanged_main} (97%)

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index cfeec239e09..55a06eadb31 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -5,7 +5,7 @@
 
 test_description='Various diff formatting options'
 
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./test-lib.sh
@@ -70,7 +70,7 @@ test_expect_success setup '
 	GIT_COMMITTER_DATE="2006-06-26 00:04:00 +0000" &&
 	export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
 
-	git checkout master &&
+	git checkout main &&
 	git pull -s ours --no-rebase . side &&
 
 	GIT_AUTHOR_DATE="2006-06-26 00:05:00 +0000" &&
@@ -95,15 +95,15 @@ test_expect_success setup '
 	test_write_lines B A >dir/sub &&
 	git add dir/sub &&
 	git commit -m "Rearranged lines in dir/sub" &&
-	git checkout master &&
+	git checkout main &&
 
 	GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
 	GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
 	export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
 	git checkout -b mode initial &&
 	git update-index --chmod=+x file0 &&
 	git commit -m "update mode" &&
-	git checkout -f master &&
+	git checkout -f main &&
 
 	GIT_AUTHOR_DATE="2006-06-26 00:06:00 +0000" &&
 	GIT_COMMITTER_DATE="2006-06-26 00:06:00 +0000" &&
@@ -112,12 +112,12 @@ test_expect_success setup '
 	git update-index --chmod=+x file2 &&
 	git commit -m "update mode (file2)" &&
 	git notes add -m "note" &&
-	git checkout -f master &&
+	git checkout -f main &&
 
-	# Same merge as master, but with parents reversed. Hide it in a
+	# Same merge as main, but with parents reversed. Hide it in a
 	# pseudo-ref to avoid impacting tests with --all.
 	commit=$(echo reverse |
-		 git commit-tree -p master^2 -p master^1 master^{tree}) &&
+		 git commit-tree -p main^2 -p main^1 main^{tree}) &&
 	git update-ref REVERSE $commit &&
 
 	git config diff.renames false &&
@@ -127,15 +127,15 @@ test_expect_success setup '
 
 : <<\EOF
 ! [initial] Initial
- * [master] Merge branch 'side'
+ * [main] Merge branch 'side'
   ! [rearrange] Rearranged lines in dir/sub
    ! [side] Side
 ----
   +  [rearrange] Rearranged lines in dir/sub
- -   [master] Merge branch 'side'
+ -   [main] Merge branch 'side'
  * + [side] Side
- *   [master^] Third
- *   [master~2] Second
+ *   [main^] Third
+ *   [main~2] Second
 +*++ [initial] Initial
 EOF
 
@@ -311,64 +311,64 @@ diff-tree initial mode
 diff-tree --stat initial mode
 diff-tree --summary initial mode
 
-diff-tree master
-diff-tree -m master
-diff-tree -p master
-diff-tree -p -m master
-diff-tree -c master
-diff-tree -c --abbrev master
-:noellipses diff-tree -c --abbrev master
-diff-tree --cc master
+diff-tree main
+diff-tree -m main
+diff-tree -p main
+diff-tree -p -m main
+diff-tree -c main
+diff-tree -c --abbrev main
+:noellipses diff-tree -c --abbrev main
+diff-tree --cc main
 # stat only should show the diffstat with the first parent
-diff-tree -c --stat master
-diff-tree --cc --stat master
-diff-tree -c --stat --summary master
-diff-tree --cc --stat --summary master
+diff-tree -c --stat main
+diff-tree --cc --stat main
+diff-tree -c --stat --summary main
+diff-tree --cc --stat --summary main
 # stat summary should show the diffstat and summary with the first parent
 diff-tree -c --stat --summary side
 diff-tree --cc --stat --summary side
-diff-tree --cc --shortstat master
+diff-tree --cc --shortstat main
 diff-tree --cc --summary REVERSE
 # improved by Timo's patch
-diff-tree --cc --patch-with-stat master
+diff-tree --cc --patch-with-stat main
 # improved by Timo's patch
-diff-tree --cc --patch-with-stat --summary master
+diff-tree --cc --patch-with-stat --summary main
 # this is correct
 diff-tree --cc --patch-with-stat --summary side
 
-log master
-log -p master
-log --root master
-log --root -p master
-log --patch-with-stat master
-log --root --patch-with-stat master
-log --root --patch-with-stat --summary master
-# improved by Timo's patch
-log --root -c --patch-with-stat --summary master
-# improved by Timo's patch
-log --root --cc --patch-with-stat --summary master
-log --no-diff-merges -p --first-parent master
-log --diff-merges=off -p --first-parent master
-log --first-parent --diff-merges=off -p master
-log -p --first-parent master
-log -p --diff-merges=first-parent master
-log --diff-merges=first-parent master
-log -m -p --first-parent master
-log -m -p master
-log --cc -m -p master
-log -c -m -p master
-log -m --raw master
-log -m --stat master
-log -SF master
-log -S F master
-log -SF -p master
-log -SF master --max-count=0
-log -SF master --max-count=1
-log -SF master --max-count=2
-log -GF master
-log -GF -p master
-log -GF -p --pickaxe-all master
-log -IA -IB -I1 -I2 -p master
+log main
+log -p main
+log --root main
+log --root -p main
+log --patch-with-stat main
+log --root --patch-with-stat main
+log --root --patch-with-stat --summary main
+# improved by Timo's patch
+log --root -c --patch-with-stat --summary main
+# improved by Timo's patch
+log --root --cc --patch-with-stat --summary main
+log --no-diff-merges -p --first-parent main
+log --diff-merges=off -p --first-parent main
+log --first-parent --diff-merges=off -p main
+log -p --first-parent main
+log -p --diff-merges=first-parent main
+log --diff-merges=first-parent main
+log -m -p --first-parent main
+log -m -p main
+log --cc -m -p main
+log -c -m -p main
+log -m --raw main
+log -m --stat main
+log -SF main
+log -S F main
+log -SF -p main
+log -SF main --max-count=0
+log -SF main --max-count=1
+log -SF main --max-count=2
+log -GF main
+log -GF -p main
+log -GF -p --pickaxe-all main
+log -IA -IB -I1 -I2 -p main
 log --decorate --all
 log --decorate=full --all
 log --decorate --clear-decorations --all
@@ -377,35 +377,35 @@ log --decorate=full --clear-decorations --all
 rev-list --parents HEAD
 rev-list --children HEAD
 
-whatchanged master
-:noellipses whatchanged master
-whatchanged -p master
-whatchanged --root master
-:noellipses whatchanged --root master
-whatchanged --root -p master
-whatchanged --patch-with-stat master
-whatchanged --root --patch-with-stat master
-whatchanged --root --patch-with-stat --summary master
-# improved by Timo's patch
-whatchanged --root -c --patch-with-stat --summary master
-# improved by Timo's patch
-whatchanged --root --cc --patch-with-stat --summary master
-whatchanged -SF master
-:noellipses whatchanged -SF master
-whatchanged -SF -p master
+whatchanged main
+:noellipses whatchanged main
+whatchanged -p main
+whatchanged --root main
+:noellipses whatchanged --root main
+whatchanged --root -p main
+whatchanged --patch-with-stat main
+whatchanged --root --patch-with-stat main
+whatchanged --root --patch-with-stat --summary main
+# improved by Timo's patch
+whatchanged --root -c --patch-with-stat --summary main
+# improved by Timo's patch
+whatchanged --root --cc --patch-with-stat --summary main
+whatchanged -SF main
+:noellipses whatchanged -SF main
+whatchanged -SF -p main
 
-log --patch-with-stat master -- dir/
-whatchanged --patch-with-stat master -- dir/
-log --patch-with-stat --summary master -- dir/
-whatchanged --patch-with-stat --summary master -- dir/
+log --patch-with-stat main -- dir/
+whatchanged --patch-with-stat main -- dir/
+log --patch-with-stat --summary main -- dir/
+whatchanged --patch-with-stat --summary main -- dir/
 
 show initial
 show --root initial
 show side
-show master
-show -c master
-show -m master
-show --first-parent master
+show main
+show -c main
+show -m main
+show --first-parent main
 show --stat side
 show --stat --summary side
 show --patch-with-stat side
@@ -414,22 +414,22 @@ show --patch-with-raw side
 show --patch-with-stat --summary side
 
 format-patch --stdout initial..side
-format-patch --stdout initial..master^
-format-patch --stdout initial..master
-format-patch --stdout --no-numbered initial..master
-format-patch --stdout --numbered initial..master
+format-patch --stdout initial..main^
+format-patch --stdout initial..main
+format-patch --stdout --no-numbered initial..main
+format-patch --stdout --numbered initial..main
 format-patch --attach --stdout initial..side
 format-patch --attach --stdout --suffix=.diff initial..side
-format-patch --attach --stdout initial..master^
-format-patch --attach --stdout initial..master
+format-patch --attach --stdout initial..main^
+format-patch --attach --stdout initial..main
 format-patch --inline --stdout initial..side
-format-patch --inline --stdout initial..master^
-format-patch --inline --stdout --numbered-files initial..master
-format-patch --inline --stdout initial..master
-format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
+format-patch --inline --stdout initial..main^
+format-patch --inline --stdout --numbered-files initial..main
+format-patch --inline --stdout initial..main
+format-patch --inline --stdout --subject-prefix=TESTCASE initial..main
 config format.subjectprefix DIFFERENT_PREFIX
-format-patch --inline --stdout initial..master^^
-format-patch --stdout --cover-letter -n initial..master^
+format-patch --inline --stdout initial..main^^
+format-patch --stdout --cover-letter -n initial..main^
 
 diff --abbrev initial..side
 diff -U initial..side
@@ -448,13 +448,13 @@ diff --name-status dir2 dir
 diff --no-index --name-status dir2 dir
 diff --no-index --name-status -- dir2 dir
 diff --no-index dir dir3
-diff master master^ side
+diff main main^ side
 # Can't use spaces...
-diff --line-prefix=abc master master^ side
-diff --dirstat master~1 master~2
+diff --line-prefix=abc main main^ side
+diff --dirstat main~1 main~2
 diff --dirstat initial rearrange
 diff --dirstat-by-file initial rearrange
-diff --dirstat --cc master~1 master
+diff --dirstat --cc main~1 main
 # No-index --abbrev and --no-abbrev
 diff --raw initial
 :noellipses diff --raw initial
@@ -482,25 +482,25 @@ test_expect_success !WITH_BREAKING_CHANGES 'whatchanged needs --i-still-use-this
 '
 
 test_expect_success 'log -m matches pure log' '
-	git log master >result &&
+	git log main >result &&
 	process_diffs result >expected &&
 	git log -m >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'log --diff-merges=on matches --diff-merges=separate' '
-	git log -p --diff-merges=separate master >result &&
+	git log -p --diff-merges=separate main >result &&
 	process_diffs result >expected &&
-	git log -p --diff-merges=on master >result &&
+	git log -p --diff-merges=on main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'log --dd matches --diff-merges=1 -p' '
-	git log --diff-merges=1 -p master >result &&
+	git log --diff-merges=1 -p main >result &&
 	process_diffs result >expected &&
-	git log --dd master >result &&
+	git log --dd main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
@@ -511,19 +511,19 @@ test_expect_success 'deny wrong log.diffMerges config' '
 '
 
 test_expect_success 'git config log.diffMerges first-parent' '
-	git log -p --diff-merges=first-parent master >result &&
+	git log -p --diff-merges=first-parent main >result &&
 	process_diffs result >expected &&
 	test_config log.diffMerges first-parent &&
-	git log -p --diff-merges=on master >result &&
+	git log -p --diff-merges=on main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
 
 test_expect_success 'git config log.diffMerges first-parent vs -m' '
-	git log -p --diff-merges=first-parent master >result &&
+	git log -p --diff-merges=first-parent main >result &&
 	process_diffs result >expected &&
 	test_config log.diffMerges first-parent &&
-	git log -p -m master >result &&
+	git log -p -m main >result &&
 	process_diffs result >actual &&
 	test_cmp expected actual
 '
@@ -572,7 +572,7 @@ test_expect_success 'diff-tree --stdin with log formatting' '
 	Third
 	Second
 	EOF
-	git rev-list master | git diff-tree --stdin --format=%s -s >actual &&
+	git rev-list main | git diff-tree --stdin --format=%s -s >actual &&
 	test_cmp expect actual
 '
 
@@ -585,16 +585,16 @@ test_expect_success 'diff-tree --stdin with pathspec' '
 
 	dir/sub
 	EOF
-	git rev-list master^ |
+	git rev-list main^ |
 	git diff-tree -r --stdin --name-only --format=%s dir >actual &&
 	test_cmp expect actual
 '
 
 test_expect_success 'show A B ... -- <pathspec>' '
 	# side touches dir/sub, file0, and file3
-	# master^ touches dir/sub, and file1
-	# master^^ touches dir/sub, file0, and file2
-	git show --name-only --format="<%s>" side master^ master^^ -- dir >actual &&
+	# main^ touches dir/sub, and file1
+	# main^^ touches dir/sub, file0, and file2
+	git show --name-only --format="<%s>" side main^ main^^ -- dir >actual &&
 	cat >expect <<-\EOF &&
 	<Side>
 
@@ -610,7 +610,7 @@ test_expect_success 'show A B ... -- <pathspec>' '
 '
 
 test_expect_success 'diff -I<regex>: setup' '
-	git checkout master &&
+	git checkout main &&
 	test_seq 50 >file0 &&
 	git commit -m "Set up -I<regex> test file" file0 &&
 	test_seq 50 | sed -e "s/13/ten and three/" -e "/7\$/d" >file0 &&
diff --git a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_master b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_main
similarity index 86%
rename from t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_master
rename to t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_main
index 9951e3677d6..af1cf20f4ca 100644
--- a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --patch-with-stat --summary master
+$ git diff-tree --cc --patch-with-stat --summary main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_master b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_main
similarity index 89%
rename from t/t4013/diff.diff-tree_--cc_--patch-with-stat_master
rename to t/t4013/diff.diff-tree_--cc_--patch-with-stat_main
index db3c0a7b2cc..0ec60420970 100644
--- a/t/t4013/diff.diff-tree_--cc_--patch-with-stat_master
+++ b/t/t4013/diff.diff-tree_--cc_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --patch-with-stat master
+$ git diff-tree --cc --patch-with-stat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_--shortstat_master b/t/t4013/diff.diff-tree_--cc_--shortstat_main
similarity index 65%
rename from t/t4013/diff.diff-tree_--cc_--shortstat_master
rename to t/t4013/diff.diff-tree_--cc_--shortstat_main
index a4ca42df2a4..9a4ef031973 100644
--- a/t/t4013/diff.diff-tree_--cc_--shortstat_master
+++ b/t/t4013/diff.diff-tree_--cc_--shortstat_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --shortstat master
+$ git diff-tree --cc --shortstat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  2 files changed, 5 insertions(+)
 $
diff --git a/t/t4013/diff.diff-tree_-c_--stat_--summary_master b/t/t4013/diff.diff-tree_--cc_--stat_--summary_main
similarity index 71%
rename from t/t4013/diff.diff-tree_-c_--stat_--summary_master
rename to t/t4013/diff.diff-tree_--cc_--stat_--summary_main
index 81c3021541b..9db08a4aa96 100644
--- a/t/t4013/diff.diff-tree_-c_--stat_--summary_master
+++ b/t/t4013/diff.diff-tree_--cc_--stat_--summary_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --stat --summary master
+$ git diff-tree --cc --stat --summary main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_-c_--stat_master b/t/t4013/diff.diff-tree_--cc_--stat_main
similarity index 76%
rename from t/t4013/diff.diff-tree_-c_--stat_master
rename to t/t4013/diff.diff-tree_--cc_--stat_main
index 89d59b15480..7ecc67a524e 100644
--- a/t/t4013/diff.diff-tree_-c_--stat_master
+++ b/t/t4013/diff.diff-tree_--cc_--stat_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --stat master
+$ git diff-tree --cc --stat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_master b/t/t4013/diff.diff-tree_--cc_main
similarity index 91%
rename from t/t4013/diff.diff-tree_--cc_master
rename to t/t4013/diff.diff-tree_--cc_main
index 5ecb4e14ae4..1a962856ad4 100644
--- a/t/t4013/diff.diff-tree_--cc_master
+++ b/t/t4013/diff.diff-tree_--cc_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc master
+$ git diff-tree --cc main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 diff --cc dir/sub
 index cead32e,7289e35..992913c
diff --git a/t/t4013/diff.diff-tree_-c_--abbrev_master b/t/t4013/diff.diff-tree_-c_--abbrev_main
similarity index 83%
rename from t/t4013/diff.diff-tree_-c_--abbrev_master
rename to t/t4013/diff.diff-tree_-c_--abbrev_main
index b8e4aa25307..039d127cf24 100644
--- a/t/t4013/diff.diff-tree_-c_--abbrev_master
+++ b/t/t4013/diff.diff-tree_-c_--abbrev_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --abbrev master
+$ git diff-tree -c --abbrev main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e... 7289e35... 992913c... MM	dir/sub
 ::100644 100644 100644 b414108... f4615da... 10a8a9f... MM	file0
diff --git a/t/t4013/diff.diff-tree_--cc_--stat_--summary_master b/t/t4013/diff.diff-tree_-c_--stat_--summary_main
similarity index 70%
rename from t/t4013/diff.diff-tree_--cc_--stat_--summary_master
rename to t/t4013/diff.diff-tree_-c_--stat_--summary_main
index d019867dd94..05a8d16ba70 100644
--- a/t/t4013/diff.diff-tree_--cc_--stat_--summary_master
+++ b/t/t4013/diff.diff-tree_-c_--stat_--summary_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --stat --summary master
+$ git diff-tree -c --stat --summary main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_--cc_--stat_master b/t/t4013/diff.diff-tree_-c_--stat_main
similarity index 75%
rename from t/t4013/diff.diff-tree_--cc_--stat_master
rename to t/t4013/diff.diff-tree_-c_--stat_main
index 40b91796b34..61d9f450dfd 100644
--- a/t/t4013/diff.diff-tree_--cc_--stat_master
+++ b/t/t4013/diff.diff-tree_-c_--stat_main
@@ -1,4 +1,4 @@
-$ git diff-tree --cc --stat master
+$ git diff-tree -c --stat main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
  dir/sub | 2 ++
  file0   | 3 +++
diff --git a/t/t4013/diff.diff-tree_-c_master b/t/t4013/diff.diff-tree_-c_main
similarity index 93%
rename from t/t4013/diff.diff-tree_-c_master
rename to t/t4013/diff.diff-tree_-c_main
index e2d2bb26114..a84e1185cf5 100644
--- a/t/t4013/diff.diff-tree_-c_master
+++ b/t/t4013/diff.diff-tree_-c_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c master
+$ git diff-tree -c main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e925b1420c84c14cbf7cf755e7e45af8ad 7289e35bff32727c08dda207511bec138fdb9ea5 992913c5aa0a5476d10c49ed0f21fc0c6d1aedf3 MM	dir/sub
 ::100644 100644 100644 b414108e81e5091fe0974a1858b4d0d22b107f70 f4615da674c09df322d6ba8d6b21ecfb1b1ba510 10a8a9f3657f91a156b9f0184ed79a20adef9f7f MM	file0
diff --git a/t/t4013/diff.diff-tree_-m_master b/t/t4013/diff.diff-tree_-m_main
similarity index 96%
rename from t/t4013/diff.diff-tree_-m_master
rename to t/t4013/diff.diff-tree_-m_main
index 6d0a2207fb3..5da1f7f5251 100644
--- a/t/t4013/diff.diff-tree_-m_master
+++ b/t/t4013/diff.diff-tree_-m_main
@@ -1,4 +1,4 @@
-$ git diff-tree -m master
+$ git diff-tree -m main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 :040000 040000 65f5c9dd60ce3b2b3324b618ac7accf8d912c113 0564e026437809817a64fff393079714b6dd4628 M	dir
 :100644 100644 b414108e81e5091fe0974a1858b4d0d22b107f70 10a8a9f3657f91a156b9f0184ed79a20adef9f7f M	file0
diff --git a/t/t4013/diff.diff-tree_-p_-m_master b/t/t4013/diff.diff-tree_-p_-m_main
similarity index 97%
rename from t/t4013/diff.diff-tree_-p_-m_master
rename to t/t4013/diff.diff-tree_-p_-m_main
index b60bea039d9..29c9fc20b8b 100644
--- a/t/t4013/diff.diff-tree_-p_-m_master
+++ b/t/t4013/diff.diff-tree_-p_-m_main
@@ -1,4 +1,4 @@
-$ git diff-tree -p -m master
+$ git diff-tree -p -m main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 diff --git a/dir/sub b/dir/sub
 index cead32e..992913c 100644
diff --git a/t/t4013/diff.diff-tree_-p_main b/t/t4013/diff.diff-tree_-p_main
new file mode 100644
index 00000000000..c658062422e
--- /dev/null
+++ b/t/t4013/diff.diff-tree_-p_main
@@ -0,0 +1,2 @@
+$ git diff-tree -p main
+$
diff --git a/t/t4013/diff.diff-tree_-p_master b/t/t4013/diff.diff-tree_-p_master
deleted file mode 100644
index b182875fb2f..00000000000
--- a/t/t4013/diff.diff-tree_-p_master
+++ /dev/null
@@ -1,2 +0,0 @@
-$ git diff-tree -p master
-$
diff --git a/t/t4013/diff.diff-tree_main b/t/t4013/diff.diff-tree_main
new file mode 100644
index 00000000000..dc5b9fdeb6e
--- /dev/null
+++ b/t/t4013/diff.diff-tree_main
@@ -0,0 +1,2 @@
+$ git diff-tree main
+$
diff --git a/t/t4013/diff.diff-tree_master b/t/t4013/diff.diff-tree_master
deleted file mode 100644
index fe9226f8a12..00000000000
--- a/t/t4013/diff.diff-tree_master
+++ /dev/null
@@ -1,2 +0,0 @@
-$ git diff-tree master
-$
diff --git a/t/t4013/diff.diff_--dirstat_--cc_main~1_main b/t/t4013/diff.diff_--dirstat_--cc_main~1_main
new file mode 100644
index 00000000000..168a357a02e
--- /dev/null
+++ b/t/t4013/diff.diff_--dirstat_--cc_main~1_main
@@ -0,0 +1,3 @@
+$ git diff --dirstat --cc main~1 main
+  40.0% dir/
+$
diff --git a/t/t4013/diff.diff_--dirstat_--cc_master~1_master b/t/t4013/diff.diff_--dirstat_--cc_master~1_master
deleted file mode 100644
index fba4e34175e..00000000000
--- a/t/t4013/diff.diff_--dirstat_--cc_master~1_master
+++ /dev/null
@@ -1,3 +0,0 @@
-$ git diff --dirstat --cc master~1 master
-  40.0% dir/
-$
diff --git a/t/t4013/diff.diff_--dirstat_main~1_main~2 b/t/t4013/diff.diff_--dirstat_main~1_main~2
new file mode 100644
index 00000000000..68097337089
--- /dev/null
+++ b/t/t4013/diff.diff_--dirstat_main~1_main~2
@@ -0,0 +1,3 @@
+$ git diff --dirstat main~1 main~2
+  40.0% dir/
+$
diff --git a/t/t4013/diff.diff_--dirstat_master~1_master~2 b/t/t4013/diff.diff_--dirstat_master~1_master~2
deleted file mode 100644
index b672e1ca63d..00000000000
--- a/t/t4013/diff.diff_--dirstat_master~1_master~2
+++ /dev/null
@@ -1,3 +0,0 @@
-$ git diff --dirstat master~1 master~2
-  40.0% dir/
-$
diff --git a/t/t4013/diff.diff_--line-prefix=abc_master_master^_side b/t/t4013/diff.diff_--line-prefix=abc_main_main^_side
similarity index 87%
rename from t/t4013/diff.diff_--line-prefix=abc_master_master^_side
rename to t/t4013/diff.diff_--line-prefix=abc_main_main^_side
index 99f91e7f0e3..67a2145a365 100644
--- a/t/t4013/diff.diff_--line-prefix=abc_master_master^_side
+++ b/t/t4013/diff.diff_--line-prefix=abc_main_main^_side
@@ -1,4 +1,4 @@
-$ git diff --line-prefix=abc master master^ side
+$ git diff --line-prefix=abc main main^ side
 abcdiff --cc dir/sub
 abcindex cead32e,7289e35..992913c
 abc--- a/dir/sub
diff --git a/t/t4013/diff.diff_master_master^_side b/t/t4013/diff.diff_main_main^_side
similarity index 89%
rename from t/t4013/diff.diff_master_master^_side
rename to t/t4013/diff.diff_main_main^_side
index 50ec9cadd61..ab81ec9e47b 100644
--- a/t/t4013/diff.diff_master_master^_side
+++ b/t/t4013/diff.diff_main_main^_side
@@ -1,4 +1,4 @@
-$ git diff master master^ side
+$ git diff main main^ side
 diff --cc dir/sub
 index cead32e,7289e35..992913c
 --- a/dir/sub
diff --git a/t/t4013/diff.format-patch_--attach_--stdout_initial..master b/t/t4013/diff.format-patch_--attach_--stdout_initial..main
similarity index 98%
rename from t/t4013/diff.format-patch_--attach_--stdout_initial..master
rename to t/t4013/diff.format-patch_--attach_--stdout_initial..main
index 52fedc179e5..9f56380350d 100644
--- a/t/t4013/diff.format-patch_--attach_--stdout_initial..master
+++ b/t/t4013/diff.format-patch_--attach_--stdout_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --attach --stdout initial..master
+$ git format-patch --attach --stdout initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--attach_--stdout_initial..master^ b/t/t4013/diff.format-patch_--attach_--stdout_initial..main^
similarity index 97%
rename from t/t4013/diff.format-patch_--attach_--stdout_initial..master^
rename to t/t4013/diff.format-patch_--attach_--stdout_initial..main^
index 1c3cde251b5..80132ea99eb 100644
--- a/t/t4013/diff.format-patch_--attach_--stdout_initial..master^
+++ b/t/t4013/diff.format-patch_--attach_--stdout_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --attach --stdout initial..master^
+$ git format-patch --attach --stdout initial..main^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..main
similarity index 99%
rename from t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..master
rename to t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..main
index 02c4db7ec58..8e889090fbe 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..master
+++ b/t/t4013/diff.format-patch_--inline_--stdout_--numbered-files_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout --numbered-files initial..master
+$ git format-patch --inline --stdout --numbered-files initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main
similarity index 99%
rename from t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master
rename to t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main
index c7677c5951c..d7d2b12d155 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master
+++ b/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
+$ git format-patch --inline --stdout --subject-prefix=TESTCASE initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_initial..main
similarity index 98%
rename from t/t4013/diff.format-patch_--inline_--stdout_initial..master
rename to t/t4013/diff.format-patch_--inline_--stdout_initial..main
index 5b3e34e2c0c..c49c423f82f 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_initial..master
+++ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout initial..master
+$ git format-patch --inline --stdout initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^
similarity index 97%
rename from t/t4013/diff.format-patch_--inline_--stdout_initial..master^
rename to t/t4013/diff.format-patch_--inline_--stdout_initial..main^
index d13f8a81280..8669dbfe6c9 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^
+++ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout initial..master^
+$ git format-patch --inline --stdout initial..main^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^^ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^^
similarity index 95%
rename from t/t4013/diff.format-patch_--inline_--stdout_initial..master^^
rename to t/t4013/diff.format-patch_--inline_--stdout_initial..main^^
index caec5537de3..b749be58b0a 100644
--- a/t/t4013/diff.format-patch_--inline_--stdout_initial..master^^
+++ b/t/t4013/diff.format-patch_--inline_--stdout_initial..main^^
@@ -1,4 +1,4 @@
-$ git format-patch --inline --stdout initial..master^^
+$ git format-patch --inline --stdout initial..main^^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..main^
similarity index 96%
rename from t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
rename to t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..main^
index 244d964fc67..567f2221982 100644
--- a/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..master^
+++ b/t/t4013/diff.format-patch_--stdout_--cover-letter_-n_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --stdout --cover-letter -n initial..master^
+$ git format-patch --stdout --cover-letter -n initial..main^
 From 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Mon Sep 17 00:00:00 2001
 From: C O Mitter <committer@example.com>
 Date: Mon, 26 Jun 2006 00:06:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..master b/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..main
similarity index 97%
rename from t/t4013/diff.format-patch_--stdout_--no-numbered_initial..master
rename to t/t4013/diff.format-patch_--stdout_--no-numbered_initial..main
index bfc287a147d..195b62ea4f5 100644
--- a/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..master
+++ b/t/t4013/diff.format-patch_--stdout_--no-numbered_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --stdout --no-numbered initial..master
+$ git format-patch --stdout --no-numbered initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_--numbered_initial..master b/t/t4013/diff.format-patch_--stdout_--numbered_initial..main
similarity index 97%
rename from t/t4013/diff.format-patch_--stdout_--numbered_initial..master
rename to t/t4013/diff.format-patch_--stdout_--numbered_initial..main
index 568f6f584e6..0678a38515d 100644
--- a/t/t4013/diff.format-patch_--stdout_--numbered_initial..master
+++ b/t/t4013/diff.format-patch_--stdout_--numbered_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --stdout --numbered initial..master
+$ git format-patch --stdout --numbered initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_initial..master b/t/t4013/diff.format-patch_--stdout_initial..main
similarity index 97%
rename from t/t4013/diff.format-patch_--stdout_initial..master
rename to t/t4013/diff.format-patch_--stdout_initial..main
index 5f0352f9f70..b4a6302e7cb 100644
--- a/t/t4013/diff.format-patch_--stdout_initial..master
+++ b/t/t4013/diff.format-patch_--stdout_initial..main
@@ -1,4 +1,4 @@
-$ git format-patch --stdout initial..master
+$ git format-patch --stdout initial..main
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.format-patch_--stdout_initial..master^ b/t/t4013/diff.format-patch_--stdout_initial..main^
similarity index 96%
rename from t/t4013/diff.format-patch_--stdout_initial..master^
rename to t/t4013/diff.format-patch_--stdout_initial..main^
index 2ae454d8073..36b32215826 100644
--- a/t/t4013/diff.format-patch_--stdout_initial..master^
+++ b/t/t4013/diff.format-patch_--stdout_initial..main^
@@ -1,4 +1,4 @@
-$ git format-patch --stdout initial..master^
+$ git format-patch --stdout initial..main^
 From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
 From: A U Thor <author@example.com>
 Date: Mon, 26 Jun 2006 00:01:00 +0000
diff --git a/t/t4013/diff.log_-c_-m_-p_master b/t/t4013/diff.log_--cc_-m_-p_main
similarity index 99%
rename from t/t4013/diff.log_-c_-m_-p_master
rename to t/t4013/diff.log_--cc_-m_-p_main
index b660f3d5f28..f32746ea3ed 100644
--- a/t/t4013/diff.log_-c_-m_-p_master
+++ b/t/t4013/diff.log_--cc_-m_-p_main
@@ -1,4 +1,4 @@
-$ git log -c -m -p master
+$ git log --cc -m -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--decorate=full_--all b/t/t4013/diff.log_--decorate=full_--all
index 6b0b334a5d6..c099399525a 100644
--- a/t/t4013/diff.log_--decorate=full_--all
+++ b/t/t4013/diff.log_--decorate=full_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate=full_--clear-decorations_--all b/t/t4013/diff.log_--decorate=full_--clear-decorations_--all
index 1c030a6554e..c43684e5361 100644
--- a/t/t4013/diff.log_--decorate=full_--clear-decorations_--all
+++ b/t/t4013/diff.log_--decorate=full_--clear-decorations_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate=full_--decorate-all_--all b/t/t4013/diff.log_--decorate=full_--decorate-all_--all
index d6e79287846..48dca61681c 100644
--- a/t/t4013/diff.log_--decorate=full_--decorate-all_--all
+++ b/t/t4013/diff.log_--decorate=full_--decorate-all_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> refs/heads/main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate_--all b/t/t4013/diff.log_--decorate_--all
index c7df1f58141..8bbf891f658 100644
--- a/t/t4013/diff.log_--decorate_--all
+++ b/t/t4013/diff.log_--decorate_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate_--clear-decorations_--all b/t/t4013/diff.log_--decorate_--clear-decorations_--all
index 88be82cce31..86b1353f514 100644
--- a/t/t4013/diff.log_--decorate_--clear-decorations_--all
+++ b/t/t4013/diff.log_--decorate_--clear-decorations_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--decorate_--decorate-all_--all b/t/t4013/diff.log_--decorate_--decorate-all_--all
index 5d22618bb60..59fb17bfc54 100644
--- a/t/t4013/diff.log_--decorate_--decorate-all_--all
+++ b/t/t4013/diff.log_--decorate_--decorate-all_--all
@@ -26,7 +26,7 @@ Date:   Mon Jun 26 00:06:00 2006 +0000
 
     Notes added by 'git notes add'
 
-commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> master)
+commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (HEAD -> main)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:04:00 2006 +0000
diff --git a/t/t4013/diff.log_--diff-merges=first-parent_master b/t/t4013/diff.log_--diff-merges=first-parent_main
similarity index 95%
rename from t/t4013/diff.log_--diff-merges=first-parent_master
rename to t/t4013/diff.log_--diff-merges=first-parent_main
index fa63a557dd1..bacee621e54 100644
--- a/t/t4013/diff.log_--diff-merges=first-parent_master
+++ b/t/t4013/diff.log_--diff-merges=first-parent_main
@@ -1,4 +1,4 @@
-$ git log --diff-merges=first-parent master
+$ git log --diff-merges=first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_master b/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_main
similarity index 95%
rename from t/t4013/diff.log_--no-diff-merges_-p_--first-parent_master
rename to t/t4013/diff.log_--diff-merges=off_-p_--first-parent_main
index 597002232e5..fe180fda3be 100644
--- a/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_master
+++ b/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log --no-diff-merges -p --first-parent master
+$ git log --diff-merges=off -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_master b/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_main
similarity index 95%
rename from t/t4013/diff.log_--first-parent_--diff-merges=off_-p_master
rename to t/t4013/diff.log_--first-parent_--diff-merges=off_-p_main
index 5d7461a167e..dca62d4e608 100644
--- a/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_master
+++ b/t/t4013/diff.log_--first-parent_--diff-merges=off_-p_main
@@ -1,4 +1,4 @@
-$ git log --first-parent --diff-merges=off -p master
+$ git log --first-parent --diff-merges=off -p main
 commit 80e25ffa65bcdbe82ef654b4d06dbbde7945c37f
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_master b/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_main
similarity index 95%
rename from t/t4013/diff.log_--diff-merges=off_-p_--first-parent_master
rename to t/t4013/diff.log_--no-diff-merges_-p_--first-parent_main
index 194e893c94f..0b541180887 100644
--- a/t/t4013/diff.log_--diff-merges=off_-p_--first-parent_master
+++ b/t/t4013/diff.log_--no-diff-merges_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log --diff-merges=off -p --first-parent master
+$ git log --no-diff-merges -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--patch-with-stat_--summary_master_--_dir_ b/t/t4013/diff.log_--patch-with-stat_--summary_main_--_dir_
similarity index 96%
rename from t/t4013/diff.log_--patch-with-stat_--summary_master_--_dir_
rename to t/t4013/diff.log_--patch-with-stat_--summary_main_--_dir_
index a18f1472a9a..3ed46cc8672 100644
--- a/t/t4013/diff.log_--patch-with-stat_--summary_master_--_dir_
+++ b/t/t4013/diff.log_--patch-with-stat_--summary_main_--_dir_
@@ -1,4 +1,4 @@
-$ git log --patch-with-stat --summary master -- dir/
+$ git log --patch-with-stat --summary main -- dir/
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--patch-with-stat_master b/t/t4013/diff.log_--patch-with-stat_main
similarity index 98%
rename from t/t4013/diff.log_--patch-with-stat_master
rename to t/t4013/diff.log_--patch-with-stat_main
index ae425c46722..2e12b557cb7 100644
--- a/t/t4013/diff.log_--patch-with-stat_master
+++ b/t/t4013/diff.log_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git log --patch-with-stat master
+$ git log --patch-with-stat main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--patch-with-stat_master_--_dir_ b/t/t4013/diff.log_--patch-with-stat_main_--_dir_
similarity index 96%
rename from t/t4013/diff.log_--patch-with-stat_master_--_dir_
rename to t/t4013/diff.log_--patch-with-stat_main_--_dir_
index d5207cadf44..d511ea7f6bf 100644
--- a/t/t4013/diff.log_--patch-with-stat_master_--_dir_
+++ b/t/t4013/diff.log_--patch-with-stat_main_--_dir_
@@ -1,4 +1,4 @@
-$ git log --patch-with-stat master -- dir/
+$ git log --patch-with-stat main -- dir/
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_master b/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_main
similarity index 98%
rename from t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_master
rename to t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_main
index 0fc1e8cd71f..3cfd0e64229 100644
--- a/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.log_--root_--cc_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git log --root --cc --patch-with-stat --summary master
+$ git log --root --cc --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_--patch-with-stat_--summary_master b/t/t4013/diff.log_--root_--patch-with-stat_--summary_main
similarity index 98%
rename from t/t4013/diff.log_--root_--patch-with-stat_--summary_master
rename to t/t4013/diff.log_--root_--patch-with-stat_--summary_main
index dffc09dde9e..9f4d6dfa44e 100644
--- a/t/t4013/diff.log_--root_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.log_--root_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git log --root --patch-with-stat --summary master
+$ git log --root --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_--patch-with-stat_master b/t/t4013/diff.log_--root_--patch-with-stat_main
similarity index 98%
rename from t/t4013/diff.log_--root_--patch-with-stat_master
rename to t/t4013/diff.log_--root_--patch-with-stat_main
index 55aa98012de..0d69ae2e11b 100644
--- a/t/t4013/diff.log_--root_--patch-with-stat_master
+++ b/t/t4013/diff.log_--root_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git log --root --patch-with-stat master
+$ git log --root --patch-with-stat main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_master b/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_main
similarity index 98%
rename from t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_master
rename to t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_main
index 019d85f7de6..1b71add9dea 100644
--- a/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.log_--root_-c_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git log --root -c --patch-with-stat --summary master
+$ git log --root -c --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_-p_master b/t/t4013/diff.log_--root_-p_main
similarity index 98%
rename from t/t4013/diff.log_--root_-p_master
rename to t/t4013/diff.log_--root_-p_main
index b42c334439b..04581296ed5 100644
--- a/t/t4013/diff.log_--root_-p_master
+++ b/t/t4013/diff.log_--root_-p_main
@@ -1,4 +1,4 @@
-$ git log --root -p master
+$ git log --root -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_--root_master b/t/t4013/diff.log_--root_main
similarity index 96%
rename from t/t4013/diff.log_--root_master
rename to t/t4013/diff.log_--root_main
index e8f46159da1..d5e90fd6b48 100644
--- a/t/t4013/diff.log_--root_master
+++ b/t/t4013/diff.log_--root_main
@@ -1,4 +1,4 @@
-$ git log --root master
+$ git log --root main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-GF_-p_--pickaxe-all_master b/t/t4013/diff.log_-GF_-p_--pickaxe-all_main
similarity index 90%
rename from t/t4013/diff.log_-GF_-p_--pickaxe-all_master
rename to t/t4013/diff.log_-GF_-p_--pickaxe-all_main
index d36f88098b0..1f7a497c2d7 100644
--- a/t/t4013/diff.log_-GF_-p_--pickaxe-all_master
+++ b/t/t4013/diff.log_-GF_-p_--pickaxe-all_main
@@ -1,4 +1,4 @@
-$ git log -GF -p --pickaxe-all master
+$ git log -GF -p --pickaxe-all main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-GF_-p_master b/t/t4013/diff.log_-GF_-p_main
similarity index 91%
rename from t/t4013/diff.log_-GF_-p_master
rename to t/t4013/diff.log_-GF_-p_main
index 9d93f2c23a8..c80dda41e9f 100644
--- a/t/t4013/diff.log_-GF_-p_master
+++ b/t/t4013/diff.log_-GF_-p_main
@@ -1,4 +1,4 @@
-$ git log -GF -p master
+$ git log -GF -p main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-SF_master b/t/t4013/diff.log_-GF_main
similarity index 86%
rename from t/t4013/diff.log_-SF_master
rename to t/t4013/diff.log_-GF_main
index c1599f2f520..b94a7f78398 100644
--- a/t/t4013/diff.log_-SF_master
+++ b/t/t4013/diff.log_-GF_main
@@ -1,4 +1,4 @@
-$ git log -SF master
+$ git log -GF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_master b/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_main
similarity index 97%
rename from t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_master
rename to t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_main
index 929f35a05b4..67e26b4e547 100644
--- a/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_master
+++ b/t/t4013/diff.log_-IA_-IB_-I1_-I2_-p_main
@@ -1,4 +1,4 @@
-$ git log -IA -IB -I1 -I2 -p master
+$ git log -IA -IB -I1 -I2 -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-SF_-p_master b/t/t4013/diff.log_-SF_-p_main
similarity index 91%
rename from t/t4013/diff.log_-SF_-p_master
rename to t/t4013/diff.log_-SF_-p_main
index 5e324389729..fa82ac14908 100644
--- a/t/t4013/diff.log_-SF_-p_master
+++ b/t/t4013/diff.log_-SF_-p_main
@@ -1,4 +1,4 @@
-$ git log -SF -p master
+$ git log -SF -p main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-GF_master b/t/t4013/diff.log_-SF_main
similarity index 86%
rename from t/t4013/diff.log_-GF_master
rename to t/t4013/diff.log_-SF_main
index 4c6708d2d0d..dbf770db49d 100644
--- a/t/t4013/diff.log_-GF_master
+++ b/t/t4013/diff.log_-SF_main
@@ -1,4 +1,4 @@
-$ git log -GF master
+$ git log -SF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-SF_main_--max-count=0 b/t/t4013/diff.log_-SF_main_--max-count=0
new file mode 100644
index 00000000000..683b17eb998
--- /dev/null
+++ b/t/t4013/diff.log_-SF_main_--max-count=0
@@ -0,0 +1,2 @@
+$ git log -SF main --max-count=0
+$
diff --git a/t/t4013/diff.log_-SF_master_--max-count=2 b/t/t4013/diff.log_-SF_main_--max-count=1
similarity index 79%
rename from t/t4013/diff.log_-SF_master_--max-count=2
rename to t/t4013/diff.log_-SF_main_--max-count=1
index a6c55fd4822..2102426f8cc 100644
--- a/t/t4013/diff.log_-SF_master_--max-count=2
+++ b/t/t4013/diff.log_-SF_main_--max-count=1
@@ -1,4 +1,4 @@
-$ git log -SF master --max-count=2
+$ git log -SF main --max-count=1
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_-SF_main_--max-count=2 b/t/t4013/diff.log_-SF_main_--max-count=2
new file mode 100644
index 00000000000..23e12a4cbbd
--- /dev/null
+++ b/t/t4013/diff.log_-SF_main_--max-count=2
@@ -0,0 +1,7 @@
+$ git log -SF main --max-count=2
+commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
+Author: A U Thor <author@example.com>
+Date:   Mon Jun 26 00:02:00 2006 +0000
+
+    Third
+$
diff --git a/t/t4013/diff.log_-SF_master_--max-count=0 b/t/t4013/diff.log_-SF_master_--max-count=0
deleted file mode 100644
index c1fc6c87317..00000000000
--- a/t/t4013/diff.log_-SF_master_--max-count=0
+++ /dev/null
@@ -1,2 +0,0 @@
-$ git log -SF master --max-count=0
-$
diff --git a/t/t4013/diff.log_-SF_master_--max-count=1 b/t/t4013/diff.log_-SF_master_--max-count=1
deleted file mode 100644
index c981a038147..00000000000
--- a/t/t4013/diff.log_-SF_master_--max-count=1
+++ /dev/null
@@ -1,7 +0,0 @@
-$ git log -SF master --max-count=1
-commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
-Author: A U Thor <author@example.com>
-Date:   Mon Jun 26 00:02:00 2006 +0000
-
-    Third
-$
diff --git a/t/t4013/diff.log_-S_F_master b/t/t4013/diff.log_-S_F_main
similarity index 86%
rename from t/t4013/diff.log_-S_F_master
rename to t/t4013/diff.log_-S_F_main
index 978d2b41188..a75a42e1433 100644
--- a/t/t4013/diff.log_-S_F_master
+++ b/t/t4013/diff.log_-S_F_main
@@ -1,4 +1,4 @@
-$ git log -S F master
+$ git log -S F main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.log_--cc_-m_-p_master b/t/t4013/diff.log_-c_-m_-p_main
similarity index 99%
rename from t/t4013/diff.log_--cc_-m_-p_master
rename to t/t4013/diff.log_-c_-m_-p_main
index 7c217cf348c..427f7324568 100644
--- a/t/t4013/diff.log_--cc_-m_-p_master
+++ b/t/t4013/diff.log_-c_-m_-p_main
@@ -1,4 +1,4 @@
-$ git log --cc -m -p master
+$ git log -c -m -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_--raw_master b/t/t4013/diff.log_-m_--raw_main
similarity index 98%
rename from t/t4013/diff.log_-m_--raw_master
rename to t/t4013/diff.log_-m_--raw_main
index cd2ecc46283..31d9bc77073 100644
--- a/t/t4013/diff.log_-m_--raw_master
+++ b/t/t4013/diff.log_-m_--raw_main
@@ -1,4 +1,4 @@
-$ git log -m --raw master
+$ git log -m --raw main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_--stat_master b/t/t4013/diff.log_-m_--stat_main
similarity index 98%
rename from t/t4013/diff.log_-m_--stat_master
rename to t/t4013/diff.log_-m_--stat_main
index c7db084fd90..4c8909229bf 100644
--- a/t/t4013/diff.log_-m_--stat_master
+++ b/t/t4013/diff.log_-m_--stat_main
@@ -1,4 +1,4 @@
-$ git log -m --stat master
+$ git log -m --stat main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_-p_--first-parent_master b/t/t4013/diff.log_-m_-p_--first-parent_main
similarity index 97%
rename from t/t4013/diff.log_-m_-p_--first-parent_master
rename to t/t4013/diff.log_-m_-p_--first-parent_main
index 7a0073f5296..459e10786b9 100644
--- a/t/t4013/diff.log_-m_-p_--first-parent_master
+++ b/t/t4013/diff.log_-m_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log -m -p --first-parent master
+$ git log -m -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-m_-p_master b/t/t4013/diff.log_-m_-p_main
similarity index 99%
rename from t/t4013/diff.log_-m_-p_master
rename to t/t4013/diff.log_-m_-p_main
index 9ca62a01ed2..07453c56983 100644
--- a/t/t4013/diff.log_-m_-p_master
+++ b/t/t4013/diff.log_-m_-p_main
@@ -1,4 +1,4 @@
-$ git log -m -p master
+$ git log -m -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-p_--diff-merges=first-parent_master b/t/t4013/diff.log_-p_--diff-merges=first-parent_main
similarity index 97%
rename from t/t4013/diff.log_-p_--diff-merges=first-parent_master
rename to t/t4013/diff.log_-p_--diff-merges=first-parent_main
index 9538a275112..264a2f373ec 100644
--- a/t/t4013/diff.log_-p_--diff-merges=first-parent_master
+++ b/t/t4013/diff.log_-p_--diff-merges=first-parent_main
@@ -1,4 +1,4 @@
-$ git log -p --diff-merges=first-parent master
+$ git log -p --diff-merges=first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-p_--first-parent_master b/t/t4013/diff.log_-p_--first-parent_main
similarity index 97%
rename from t/t4013/diff.log_-p_--first-parent_master
rename to t/t4013/diff.log_-p_--first-parent_main
index 28840ebea1e..247980817b5 100644
--- a/t/t4013/diff.log_-p_--first-parent_master
+++ b/t/t4013/diff.log_-p_--first-parent_main
@@ -1,4 +1,4 @@
-$ git log -p --first-parent master
+$ git log -p --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_-p_master b/t/t4013/diff.log_-p_main
similarity index 98%
rename from t/t4013/diff.log_-p_master
rename to t/t4013/diff.log_-p_main
index bf1326dc366..c82b4dbf165 100644
--- a/t/t4013/diff.log_-p_master
+++ b/t/t4013/diff.log_-p_main
@@ -1,4 +1,4 @@
-$ git log -p master
+$ git log -p main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.log_master b/t/t4013/diff.log_main
similarity index 97%
rename from t/t4013/diff.log_master
rename to t/t4013/diff.log_main
index a8f6ce5abd6..50401f73e6e 100644
--- a/t/t4013/diff.log_master
+++ b/t/t4013/diff.log_main
@@ -1,4 +1,4 @@
-$ git log master
+$ git log main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_master b/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_main
similarity index 81%
rename from t/t4013/diff.noellipses-diff-tree_-c_--abbrev_master
rename to t/t4013/diff.noellipses-diff-tree_-c_--abbrev_main
index bb80f013b37..3aa1f80af35 100644
--- a/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_master
+++ b/t/t4013/diff.noellipses-diff-tree_-c_--abbrev_main
@@ -1,4 +1,4 @@
-$ git diff-tree -c --abbrev master
+$ git diff-tree -c --abbrev main
 59d314ad6f356dd08601a4cd5e530381da3e3c64
 ::100644 100644 100644 cead32e 7289e35 992913c MM	dir/sub
 ::100644 100644 100644 b414108 f4615da 10a8a9f MM	file0
diff --git a/t/t4013/diff.noellipses-whatchanged_--root_master b/t/t4013/diff.noellipses-whatchanged_--root_main
similarity index 96%
rename from t/t4013/diff.noellipses-whatchanged_--root_master
rename to t/t4013/diff.noellipses-whatchanged_--root_main
index c2cfd4e7292..2bec0558356 100644
--- a/t/t4013/diff.noellipses-whatchanged_--root_master
+++ b/t/t4013/diff.noellipses-whatchanged_--root_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root master
+$ git whatchanged --root main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.noellipses-whatchanged_-SF_master b/t/t4013/diff.noellipses-whatchanged_-SF_main
similarity index 86%
rename from t/t4013/diff.noellipses-whatchanged_-SF_master
rename to t/t4013/diff.noellipses-whatchanged_-SF_main
index b36ce5886e0..0c1476d19eb 100644
--- a/t/t4013/diff.noellipses-whatchanged_-SF_master
+++ b/t/t4013/diff.noellipses-whatchanged_-SF_main
@@ -1,4 +1,4 @@
-$ git whatchanged -SF master
+$ git whatchanged -SF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.noellipses-whatchanged_master b/t/t4013/diff.noellipses-whatchanged_main
similarity index 96%
rename from t/t4013/diff.noellipses-whatchanged_master
rename to t/t4013/diff.noellipses-whatchanged_main
index 55e500f2edb..c48d2851aab 100644
--- a/t/t4013/diff.noellipses-whatchanged_master
+++ b/t/t4013/diff.noellipses-whatchanged_main
@@ -1,4 +1,4 @@
-$ git whatchanged master
+$ git whatchanged main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.show_--first-parent_master b/t/t4013/diff.show_--first-parent_main
similarity index 92%
rename from t/t4013/diff.show_--first-parent_master
rename to t/t4013/diff.show_--first-parent_main
index 3dcbe473a0d..480502d65c2 100644
--- a/t/t4013/diff.show_--first-parent_master
+++ b/t/t4013/diff.show_--first-parent_main
@@ -1,4 +1,4 @@
-$ git show --first-parent master
+$ git show --first-parent main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.show_-c_master b/t/t4013/diff.show_-c_main
similarity index 95%
rename from t/t4013/diff.show_-c_master
rename to t/t4013/diff.show_-c_main
index 81aba8da96c..74ef8bc96b2 100644
--- a/t/t4013/diff.show_-c_master
+++ b/t/t4013/diff.show_-c_main
@@ -1,4 +1,4 @@
-$ git show -c master
+$ git show -c main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.show_-m_master b/t/t4013/diff.show_-m_main
similarity index 98%
rename from t/t4013/diff.show_-m_master
rename to t/t4013/diff.show_-m_main
index 4ea2ee453d5..8fd56736d97 100644
--- a/t/t4013/diff.show_-m_master
+++ b/t/t4013/diff.show_-m_main
@@ -1,4 +1,4 @@
-$ git show -m master
+$ git show -m main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64 (from 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0)
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.show_master b/t/t4013/diff.show_main
similarity index 96%
rename from t/t4013/diff.show_master
rename to t/t4013/diff.show_main
index fb08ce0e46d..630b52a95ef 100644
--- a/t/t4013/diff.show_master
+++ b/t/t4013/diff.show_main
@@ -1,4 +1,4 @@
-$ git show master
+$ git show main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.whatchanged_--patch-with-stat_--summary_master_--_dir_ b/t/t4013/diff.whatchanged_--patch-with-stat_--summary_main_--_dir_
similarity index 94%
rename from t/t4013/diff.whatchanged_--patch-with-stat_--summary_master_--_dir_
rename to t/t4013/diff.whatchanged_--patch-with-stat_--summary_main_--_dir_
index c8b6af2f438..ce0754d556e 100644
--- a/t/t4013/diff.whatchanged_--patch-with-stat_--summary_master_--_dir_
+++ b/t/t4013/diff.whatchanged_--patch-with-stat_--summary_main_--_dir_
@@ -1,4 +1,4 @@
-$ git whatchanged --patch-with-stat --summary master -- dir/
+$ git whatchanged --patch-with-stat --summary main -- dir/
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--patch-with-stat_master b/t/t4013/diff.whatchanged_--patch-with-stat_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--patch-with-stat_master
rename to t/t4013/diff.whatchanged_--patch-with-stat_main
index 1ac431ba921..aabccf39a53 100644
--- a/t/t4013/diff.whatchanged_--patch-with-stat_master
+++ b/t/t4013/diff.whatchanged_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git whatchanged --patch-with-stat master
+$ git whatchanged --patch-with-stat main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--patch-with-stat_master_--_dir_ b/t/t4013/diff.whatchanged_--patch-with-stat_main_--_dir_
similarity index 94%
rename from t/t4013/diff.whatchanged_--patch-with-stat_master_--_dir_
rename to t/t4013/diff.whatchanged_--patch-with-stat_main_--_dir_
index b30c28588f9..c05a0e81496 100644
--- a/t/t4013/diff.whatchanged_--patch-with-stat_master_--_dir_
+++ b/t/t4013/diff.whatchanged_--patch-with-stat_main_--_dir_
@@ -1,4 +1,4 @@
-$ git whatchanged --patch-with-stat master -- dir/
+$ git whatchanged --patch-with-stat main -- dir/
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master b/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master
rename to t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main
index 30aae7817b9..1f74b1b5487 100644
--- a/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.whatchanged_--root_--cc_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root --cc --patch-with-stat --summary master
+$ git whatchanged --root --cc --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_master b/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_master
rename to t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_main
index db90e515254..80d98121511 100644
--- a/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.whatchanged_--root_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root --patch-with-stat --summary master
+$ git whatchanged --root --patch-with-stat --summary main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_--patch-with-stat_master b/t/t4013/diff.whatchanged_--root_--patch-with-stat_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_--patch-with-stat_master
rename to t/t4013/diff.whatchanged_--root_--patch-with-stat_main
index 9a6cc92ce7d..c0b9082a2c8 100644
--- a/t/t4013/diff.whatchanged_--root_--patch-with-stat_master
+++ b/t/t4013/diff.whatchanged_--root_--patch-with-stat_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root --patch-with-stat master
+$ git whatchanged --root --patch-with-stat main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_master b/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_master
rename to t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_main
index d1d32bd34c3..0002c6912e1 100644
--- a/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_master
+++ b/t/t4013/diff.whatchanged_--root_-c_--patch-with-stat_--summary_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root -c --patch-with-stat --summary master
+$ git whatchanged --root -c --patch-with-stat --summary main
 commit 59d314ad6f356dd08601a4cd5e530381da3e3c64
 Merge: 9a6d494 c7a2ab9
 Author: A U Thor <author@example.com>
diff --git a/t/t4013/diff.whatchanged_--root_-p_master b/t/t4013/diff.whatchanged_--root_-p_main
similarity index 98%
rename from t/t4013/diff.whatchanged_--root_-p_master
rename to t/t4013/diff.whatchanged_--root_-p_main
index ebf1f0661e0..39f3e2be746 100644
--- a/t/t4013/diff.whatchanged_--root_-p_master
+++ b/t/t4013/diff.whatchanged_--root_-p_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root -p master
+$ git whatchanged --root -p main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_--root_master b/t/t4013/diff.whatchanged_--root_main
similarity index 97%
rename from t/t4013/diff.whatchanged_--root_master
rename to t/t4013/diff.whatchanged_--root_main
index a405cb61388..36f4d6697f5 100644
--- a/t/t4013/diff.whatchanged_--root_master
+++ b/t/t4013/diff.whatchanged_--root_main
@@ -1,4 +1,4 @@
-$ git whatchanged --root master
+$ git whatchanged --root main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_-SF_-p_master b/t/t4013/diff.whatchanged_-SF_-p_main
similarity index 89%
rename from t/t4013/diff.whatchanged_-SF_-p_master
rename to t/t4013/diff.whatchanged_-SF_-p_main
index f39da848228..0e2e67c0df8 100644
--- a/t/t4013/diff.whatchanged_-SF_-p_master
+++ b/t/t4013/diff.whatchanged_-SF_-p_main
@@ -1,4 +1,4 @@
-$ git whatchanged -SF -p master
+$ git whatchanged -SF -p main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_-SF_master b/t/t4013/diff.whatchanged_-SF_main
similarity index 86%
rename from t/t4013/diff.whatchanged_-SF_master
rename to t/t4013/diff.whatchanged_-SF_main
index 0499321d0eb..34c6bf6b950 100644
--- a/t/t4013/diff.whatchanged_-SF_master
+++ b/t/t4013/diff.whatchanged_-SF_main
@@ -1,4 +1,4 @@
-$ git whatchanged -SF master
+$ git whatchanged -SF main
 commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:02:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_-p_master b/t/t4013/diff.whatchanged_-p_main
similarity index 98%
rename from t/t4013/diff.whatchanged_-p_master
rename to t/t4013/diff.whatchanged_-p_main
index f18d43209c0..18f3bdeef48 100644
--- a/t/t4013/diff.whatchanged_-p_master
+++ b/t/t4013/diff.whatchanged_-p_main
@@ -1,4 +1,4 @@
-$ git whatchanged -p master
+$ git whatchanged -p main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
diff --git a/t/t4013/diff.whatchanged_master b/t/t4013/diff.whatchanged_main
similarity index 97%
rename from t/t4013/diff.whatchanged_master
rename to t/t4013/diff.whatchanged_main
index cd3bcc2c726..d6c83ed8b03 100644
--- a/t/t4013/diff.whatchanged_master
+++ b/t/t4013/diff.whatchanged_main
@@ -1,4 +1,4 @@
-$ git whatchanged master
+$ git whatchanged main
 commit c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a
 Author: A U Thor <author@example.com>
 Date:   Mon Jun 26 00:03:00 2006 +0000
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH v2 3/4] t9902: switch default branch name to main
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
  2025-09-04 13:21   ` [PATCH v2 1/4] breaking-changes: switch default branch to main Phillip Wood
  2025-09-04 13:21   ` [PATCH v2 2/4] t4013: switch default branch name " Phillip Wood
@ 2025-09-04 13:21   ` Phillip Wood
  2025-09-04 18:27     ` Junio C Hamano
  2025-09-05 12:14     ` Patrick Steinhardt
  2025-09-04 13:21   ` [PATCH v2 4/4] t0613: stop setting default initial branch Phillip Wood
  2025-09-04 17:03   ` [PATCH v2 0/4] breaking changes: switch default initial branch name to "main" Junio C Hamano
  4 siblings, 2 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:21 UTC (permalink / raw)
  To: git
  Cc: Johannes Schindelin, Wing Huang, Junio C Hamano,
	Patrick Steinhardt, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Remove the penultimate use of "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
main" in our test suite. We have slowly been removing these ever since
we started to switch the default branch name used in tests to "main".

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t9902-completion.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 6650d33fba6..964e1f15693 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -11,9 +11,9 @@ test_description='test bash completion'
 # untraceable with such ancient Bash versions.
 test_untraceable=UnfortunatelyYes
 
-# Override environment and always use master for the default initial branch
+# Override environment and always use main for the default initial branch
 # name for these tests, so that rev completion candidates are as expected.
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./lib-bash.sh
@@ -1453,7 +1453,7 @@ test_expect_success 'git bisect - start subcommand arguments before double-dash
 		HEAD Z
 		final Z
 		initial Z
-		master Z
+		main Z
 		EOF
 	)
 '
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* [PATCH v2 4/4] t0613: stop setting default initial branch
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
                     ` (2 preceding siblings ...)
  2025-09-04 13:21   ` [PATCH v2 3/4] t9902: " Phillip Wood
@ 2025-09-04 13:21   ` Phillip Wood
  2025-09-04 18:35     ` Junio C Hamano
  2025-09-04 17:03   ` [PATCH v2 0/4] breaking changes: switch default initial branch name to "main" Junio C Hamano
  4 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:21 UTC (permalink / raw)
  To: git
  Cc: Johannes Schindelin, Wing Huang, Junio C Hamano,
	Patrick Steinhardt, Phillip Wood

From: Phillip Wood <phillip.wood@dunelm.org.uk>

As the tests are all run in separate repositories, set the branch name
to "master" when creating the repository for the tests where the result
depends on the branch name. This reduceds the number of tests that
depend on the default branch name being "master" and removes the last
instance of a test file using "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
master".

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t0613-reftable-write-options.sh | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/t/t0613-reftable-write-options.sh b/t/t0613-reftable-write-options.sh
index d77e601111f..6d00432219f 100755
--- a/t/t0613-reftable-write-options.sh
+++ b/t/t0613-reftable-write-options.sh
@@ -11,16 +11,14 @@ export GIT_TEST_REFTABLE_AUTOCOMPACTION
 # Block sizes depend on the hash function, so we force SHA1 here.
 GIT_TEST_DEFAULT_HASH=sha1
 export GIT_TEST_DEFAULT_HASH
-# Block sizes also depend on the actual refs we write, so we force "master" to
-# be the default initial branch name.
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
-export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
 . ./test-lib.sh
 
 test_expect_success 'default write options' '
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	# Block sizes also depend on the actual refs we write, so we force
+	# "master" to be the default initial branch name.
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -43,7 +41,7 @@ test_expect_success 'default write options' '
 test_expect_success 'disabled reflog writes no log blocks' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -62,7 +60,7 @@ test_expect_success 'disabled reflog writes no log blocks' '
 
 test_expect_success 'many refs results in multiple blocks' '
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -115,7 +113,7 @@ test_expect_success 'tiny block size leads to error' '
 test_expect_success 'small block size leads to multiple ref blocks' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit A &&
@@ -172,7 +170,7 @@ test_expect_success 'block size exceeding maximum supported size' '
 
 test_expect_success 'restart interval at every single record' '
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -212,7 +210,7 @@ test_expect_success 'restart interval exceeding maximum supported interval' '
 test_expect_success 'object index gets written by default with ref index' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
@@ -247,7 +245,7 @@ test_expect_success 'object index gets written by default with ref index' '
 test_expect_success 'object index can be disabled' '
 	test_config_global core.logAllRefUpdates false &&
 	test_when_finished "rm -rf repo" &&
-	git init repo &&
+	git init --initial-branch master repo &&
 	(
 		cd repo &&
 		test_commit initial &&
-- 
2.49.0.897.gfad3eb7d210


^ permalink raw reply related	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-03 18:40           ` Junio C Hamano
  2025-09-04  7:09             ` Patrick Steinhardt
@ 2025-09-04 13:27             ` Phillip Wood
  1 sibling, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:27 UTC (permalink / raw)
  To: Junio C Hamano
  Cc: Patrick Steinhardt, phillip.wood, git, Johannes Schindelin,
	Wing Huang

On 03/09/2025 19:40, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
>> ... like to keep the patches that switch the tests from using
>> "master" to "main".
> 
> I have no problem with that.  I am still unsure about that "reftable
> cares about the name being 'master'" thing.  If that can live with
> any 6 byte name, we may want to fix it to something different from
> 'master', for the sake of removing 'master'.  Perhaps 'banana' or
> something?

In the end I left it as "master" as the series was really about changing 
the default branch name rather than eliminating "master" from the test 
suite. There are a bunch of other tests that also use "git init -b 
master" which we may want to change in the future, though to me updating 
the documentation to stop using "master" as an example branch name would 
be a higher priority.

Thanks

Phillip


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-04  7:09             ` Patrick Steinhardt
@ 2025-09-04 13:30               ` Phillip Wood
  2025-09-05  6:07                 ` Patrick Steinhardt
  0 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 13:30 UTC (permalink / raw)
  To: Patrick Steinhardt, Junio C Hamano
  Cc: phillip.wood, git, Johannes Schindelin, Wing Huang

On 04/09/2025 08:09, Patrick Steinhardt wrote:
> On Wed, Sep 03, 2025 at 11:40:05AM -0700, Junio C Hamano wrote:
>>
>> I have no problem with that.  I am still unsure about that "reftable
>> cares about the name being 'master'" thing.  If that can live with
>> any 6 byte name, we may want to fix it to something different from
>> 'master', for the sake of removing 'master'.  Perhaps 'banana' or
>> something?
> 
> Huh, did I miss anything? I scanned the thread for reftables but
> couldn't find any discussion around it relying on a 6 byte name. Could
> you maybe provide a pointer to what you are referring to?

c.f. <xmqqwm6ozn7d.fsf@gitster.g>. In t0613 some of the tests check 
various sizes of things in the reftable and those depend on the length 
of the branch name

Thanks

Phillip


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 0/4] breaking changes: switch default initial branch name to "main"
  2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
                     ` (3 preceding siblings ...)
  2025-09-04 13:21   ` [PATCH v2 4/4] t0613: stop setting default initial branch Phillip Wood
@ 2025-09-04 17:03   ` Junio C Hamano
  2025-09-04 18:47     ` Phillip Wood
  4 siblings, 1 reply; 39+ messages in thread
From: Junio C Hamano @ 2025-09-04 17:03 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

Phillip Wood <phillip.wood123@gmail.com> writes:

> The patches have been re-ordered so that the change to the default
> initial branch name comes first.

We have been running for quite some time the "breaking-changes" CI
job with 'main' as the default initial branch name, long before this
series materialized.  Thanks to it, we know that such a flip should
not break any of our tests, so this patch being the first in the
series makes perfect sense.

> That patch now includes a test
> for the default initial branch name and includes the changes to the
> commit message and documentation suggested by Patrick and Junio. The
> commit messages for the other patches have been reworded now that
> GIT_TEST_DEFAULT_BRANCH_NAME is not being removed but the code changes
> are the same.
>
> This is an alternative to changing the branch name now as suggested in
> https://lore.kernel.org<pull.1961.git.1756183921623.gitgitgadget@gmail.com

No reason to repost, but for those who are reading from the
sidelines, the URL would work better with "org<pull" ->
"org/git/pull".

Thanks.

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 1/4] breaking-changes: switch default branch to main
  2025-09-04 13:21   ` [PATCH v2 1/4] breaking-changes: switch default branch to main Phillip Wood
@ 2025-09-04 17:40     ` Junio C Hamano
  2025-09-05 10:06       ` Phillip Wood
  0 siblings, 1 reply; 39+ messages in thread
From: Junio C Hamano @ 2025-09-04 17:40 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

Phillip Wood <phillip.wood123@gmail.com> writes:

> diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
> index f8d2eba061c..eb92e6f6a7d 100644
> --- a/Documentation/BreakingChanges.adoc
> +++ b/Documentation/BreakingChanges.adoc
> @@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
>  "reftable" format. Most importantly, alternative implementations of Git like
>  JGit, libgit2 and Gitoxide need to support it.
>  
> +* In new repositories the default branch name will be `main`. We have been
> +  warning that the default name will change since 675704c74dd (init: provide
> +  useful advice about init.defaultBranch, 2020-12-11).  The new name matches
> +  the default branch name used by many of the big Git forges.

As I am not a native, this is a mere question and not a suggestion,
but my reading hiccups when I see the lack of comma after "In new
repositories".

"used by many of" -> "used for new repositories by many of"?

> diff --git a/Documentation/git-init.adoc b/Documentation/git-init.adoc
> index a0dffba665f..bab99b9b477 100644
> --- a/Documentation/git-init.adoc
> +++ b/Documentation/git-init.adoc
> @@ -77,9 +77,15 @@ If this is a reinitialization, the repository will be moved to the specified pat
>  `-b <branch-name>`::
>  `--initial-branch=<branch-name>`::
>  Use _<branch-name>_ for the initial branch in the newly created
> -repository.  If not specified, fall back to the default name (currently
> -`master`, but this is subject to change in the future; the name can be
> -customized via the `init.defaultBranch` configuration variable).
> +repository.  If not specified, fall back to the default name
> +ifndef::with-breaking-changes[]
> +(currently `master`, but this will change to `main` when Git 3.0 is released).
> +endif::with-breaking-changes[]
> +ifdef::with-breaking-changes[]
> +`main`.
> +endif::with-breaking-changes[]
> +The default name can be customized via the `init.defaultBranch` configuration
> +variable.

Good.  Both the text for post-3.0 period and the rephrasing of the
original for pre-3.0 period look good.

> diff --git a/advice.c b/advice.c
> index e5f0ff84491..48c49ee4145 100644
> --- a/advice.c
> +++ b/advice.c
> @@ -51,7 +51,9 @@ static struct {
>  	[ADVICE_AM_WORK_DIR] 				= { "amWorkDir" },
>  	[ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME] 	= { "checkoutAmbiguousRemoteBranchName" },
>  	[ADVICE_COMMIT_BEFORE_MERGE]			= { "commitBeforeMerge" },
> +#ifndef WITH_BREAKING_CHANGES
>  	[ADVICE_DEFAULT_BRANCH_NAME]			= { "defaultBranchName" },
> +#endif /* WITH_BREAKING_CHANGES */
>  	[ADVICE_DETACHED_HEAD]				= { "detachedHead" },
>  	[ADVICE_DIVERGING]				= { "diverging" },
>  	[ADVICE_FETCH_SET_HEAD_WARN]			= { "fetchRemoteHEADWarn" },

Would there be folks who type "git init" to get a 'main' branch,
while trying to follow a recipe written in pre-3.0 days that assumes
the initial branch is called differently, and get confused after
seeing many commands written in the recipe for them to follow , like
"git checkout -b next master" fail?  Do they need a different advice
message to help them, i.e.e.g, 

    $ git init
    Initialized empty Git repository in /a/b/c/.git/
    hint: Since Git 3.0, an initial branch is 'main' these days.
    hint: If you need its name to be different (e.g. 'frotz'),
    hint: you can immediately rename it with "git branch -m frotz".
    hint: Disable this message with "got config set advice.foo false"

or something?  I dunno.  In any case, that will have to be a new and
different advice message, and defaultBranchName should not be reused
for that purpose, so the change in the the above hunk is fine.  I am
wondering if we need a new entry protected by the same #ifdef on the
#else side.

> diff --git a/advice.h b/advice.h
> index 727dcecf4a3..fc1dc872049 100644
> --- a/advice.h
> +++ b/advice.h
> @@ -18,7 +18,9 @@ enum advice_type {
>  	ADVICE_AM_WORK_DIR,
>  	ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME,
>  	ADVICE_COMMIT_BEFORE_MERGE,
> +#ifndef WITH_BREAKING_CHANGES
>  	ADVICE_DEFAULT_BRANCH_NAME,
> +#endif /* WITH_BREAKING_CHANGES */
>  	ADVICE_DETACHED_HEAD,
>  	ADVICE_DIVERGING,
>  	ADVICE_FETCH_SET_HEAD_WARN,

Ditto.

> diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
> index 01823fd0f14..a21834043f3 100755
> --- a/ci/run-build-and-tests.sh
> +++ b/ci/run-build-and-tests.sh
> @@ -9,7 +9,6 @@ run_tests=t
>  
>  case "$jobname" in
>  linux-breaking-changes)
> -	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>  	export WITH_BREAKING_CHANGES=YesPlease
>  	;;

OK.

>  linux-TEST-vars)

We have been very careful to make sure that none of our tests
implicitly rely on that the initial branch name will still be
'master' with the above.  Now we should make sure that none of our
tests implicitly assume that the initial branch name will forever be
called 'main'.  In the post-context, linux-TEST-vars arm has
something that forces the initial branch name to be 'master', and we
probably should keep it for a while to serve that purpose.

> diff --git a/refs.c b/refs.c
> index 4ff55cf24f6..149a8d1cec1 100644
> --- a/refs.c
> +++ b/refs.c
> @@ -627,10 +627,12 @@ void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
>  		strvec_pushf(prefixes, *p, len, prefix);
>  }
>  
> +#ifndef WITH_BREAKING_CHANGES
>  static const char default_branch_name_advice[] = N_(
>  "Using '%s' as the name for the initial branch. This default branch name\n"
> -"is subject to change. To configure the initial branch name to use in all\n"
> -"of your new repositories, which will suppress this warning, call:\n"
> +"will change to \"main\" in Git 3.0. To configure the initial branch name\n"
> +"to use in all of your new repositories, which will suppress this warning,\n"
> +"call:\n"
>  "\n"
>  "\tgit config --global init.defaultBranch <name>\n"
>  "\n"
> @@ -639,8 +641,9 @@ static const char default_branch_name_advice[] = N_(
>  "\n"
>  "\tgit branch -m <name>\n"
>  );
> +#endif /* WITH_BREAKING_CHANGES */
>  
> -char *repo_default_branch_name(struct repository *r, int quiet)
> +char *repo_default_branch_name(struct repository *r, MAYBE_UNUSED int quiet)
>  {

And if we were to introduce a new advice to help people who still
expected the traditional name, this MAYBE_UNUSED would not become
necessary ...

>  	const char *config_key = "init.defaultbranch";
>  	const char *config_display_key = "init.defaultBranch";
> @@ -649,14 +652,18 @@ char *repo_default_branch_name(struct repository *r, int quiet)
>  
>  	if (env && *env)
>  		ret = xstrdup(env);
> -	else if (repo_config_get_string(r, config_key, &ret) < 0)
> +	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
>  		die(_("could not retrieve `%s`"), config_display_key);
>  
>  	if (!ret) {
> +#ifdef WITH_BREAKING_CHANGES
> +		ret = xstrdup("main");

... as we will have the same if (!quiet) advice sequence here,
protected with a different ADVICE_ thing.

> +#else
>  		ret = xstrdup("master");
>  		if (!quiet)
>  			advise_if_enabled(ADVICE_DEFAULT_BRANCH_NAME,
>  					  _(default_branch_name_advice), ret);
> +#endif /* WITH_BREAKING_CHANGES */
>  	}
>  
>  	full_ref = xstrfmt("refs/heads/%s", ret);

Thanks.

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 3/4] t9902: switch default branch name to main
  2025-09-04 13:21   ` [PATCH v2 3/4] t9902: " Phillip Wood
@ 2025-09-04 18:27     ` Junio C Hamano
  2025-09-05 10:07       ` Phillip Wood
  2025-09-05 12:14     ` Patrick Steinhardt
  1 sibling, 1 reply; 39+ messages in thread
From: Junio C Hamano @ 2025-09-04 18:27 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

Phillip Wood <phillip.wood123@gmail.com> writes:

> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>
> Remove the penultimate use of "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
> main" in our test suite. We have slowly been removing these ever since

s|main|master|, probably?

> we started to switch the default branch name used in tests to "main".
>
> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
> ---
>  t/t9902-completion.sh | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
> index 6650d33fba6..964e1f15693 100755
> --- a/t/t9902-completion.sh
> +++ b/t/t9902-completion.sh
> @@ -11,9 +11,9 @@ test_description='test bash completion'
>  # untraceable with such ancient Bash versions.
>  test_untraceable=UnfortunatelyYes
>  
> -# Override environment and always use master for the default initial branch
> +# Override environment and always use main for the default initial branch
>  # name for these tests, so that rev completion candidates are as expected.
> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
> +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>  export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>  
>  . ./lib-bash.sh
> @@ -1453,7 +1453,7 @@ test_expect_success 'git bisect - start subcommand arguments before double-dash
>  		HEAD Z
>  		final Z
>  		initial Z
> -		master Z
> +		main Z
>  		EOF
>  	)
>  '

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 4/4] t0613: stop setting default initial branch
  2025-09-04 13:21   ` [PATCH v2 4/4] t0613: stop setting default initial branch Phillip Wood
@ 2025-09-04 18:35     ` Junio C Hamano
  2025-09-05 10:09       ` Phillip Wood
  0 siblings, 1 reply; 39+ messages in thread
From: Junio C Hamano @ 2025-09-04 18:35 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

Phillip Wood <phillip.wood123@gmail.com> writes:

> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>
> As the tests are all run in separate repositories, set the branch name
> to "master" when creating the repository for the tests where the result
> depends on the branch name. This reduceds the number of tests that
> depend on the default branch name being "master" and removes the last
> instance of a test file using "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
> master".
>
> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
> ---
>  t/t0613-reftable-write-options.sh | 20 +++++++++-----------
>  1 file changed, 9 insertions(+), 11 deletions(-)
>
> diff --git a/t/t0613-reftable-write-options.sh b/t/t0613-reftable-write-options.sh
> index d77e601111f..6d00432219f 100755
> --- a/t/t0613-reftable-write-options.sh
> +++ b/t/t0613-reftable-write-options.sh
> @@ -11,16 +11,14 @@ export GIT_TEST_REFTABLE_AUTOCOMPACTION
>  # Block sizes depend on the hash function, so we force SHA1 here.
>  GIT_TEST_DEFAULT_HASH=sha1
>  export GIT_TEST_DEFAULT_HASH
> -# Block sizes also depend on the actual refs we write, so we force "master" to
> -# be the default initial branch name.
> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
> -export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>  
>  . ./test-lib.sh
>  
>  test_expect_success 'default write options' '
>  	test_when_finished "rm -rf repo" &&
> -	git init repo &&
> +	# Block sizes also depend on the actual refs we write, so we force
> +	# "master" to be the default initial branch name.

A new developer who would want to add a new test later may or may
not pay attention to this first test piece that would look an equal
among many others.  I suspect that keeping the comment before these
test sequences begin would have been better.  Or perhaps append "all
the following test use the --initial-branch option for the same
reason" after it?

> +	git init --initial-branch master repo &&
> +	git init --initial-branch master repo &&
> +	git init --initial-branch master repo &&
> +	git init --initial-branch master repo &&
> +	git init --initial-branch master repo &&
> +	git init --initial-branch master repo &&
> +	git init --initial-branch master repo &&

Having to change this many "git init" invocations feels awkward,
especially when we envision what needs to be done if somebody needs
to update this file later.  I wonder if a new helper function
upfront

        +init_repo () {
        +	git init --initial-branch master repo
        +}
        +

with many changes like this to the rest of file

	-	git init repo &&
	+	init_repo &&

may be easier to maintain over time?  I dunno.

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 0/4] breaking changes: switch default initial branch name to "main"
  2025-09-04 17:03   ` [PATCH v2 0/4] breaking changes: switch default initial branch name to "main" Junio C Hamano
@ 2025-09-04 18:47     ` Phillip Wood
  0 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-04 18:47 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

On 04/09/2025 18:03, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
> 
>> This is an alternative to changing the branch name now as suggested in
>> https://lore.kernel.org<pull.1961.git.1756183921623.gitgitgadget@gmail.com
> 
> No reason to repost, but for those who are reading from the
> sidelines, the URL would work better with "org<pull" ->
> "org/git/pull".

Thanks for correcting that. dscho pointed it out last time and I'd 
forgotten to change it.
Thanks

Phillip


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH 6/6] breaking-changes: switch default branch to main
  2025-09-04 13:30               ` Phillip Wood
@ 2025-09-05  6:07                 ` Patrick Steinhardt
  0 siblings, 0 replies; 39+ messages in thread
From: Patrick Steinhardt @ 2025-09-05  6:07 UTC (permalink / raw)
  To: phillip.wood; +Cc: Junio C Hamano, git, Johannes Schindelin, Wing Huang

On Thu, Sep 04, 2025 at 02:30:58PM +0100, Phillip Wood wrote:
> On 04/09/2025 08:09, Patrick Steinhardt wrote:
> > On Wed, Sep 03, 2025 at 11:40:05AM -0700, Junio C Hamano wrote:
> > > 
> > > I have no problem with that.  I am still unsure about that "reftable
> > > cares about the name being 'master'" thing.  If that can live with
> > > any 6 byte name, we may want to fix it to something different from
> > > 'master', for the sake of removing 'master'.  Perhaps 'banana' or
> > > something?
> > 
> > Huh, did I miss anything? I scanned the thread for reftables but
> > couldn't find any discussion around it relying on a 6 byte name. Could
> > you maybe provide a pointer to what you are referring to?
> 
> c.f. <xmqqwm6ozn7d.fsf@gitster.g>. In t0613 some of the tests check various
> sizes of things in the reftable and those depend on the length of the branch
> name

Ah, makes sense. Thanks for the pointer.

Patrick

^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 1/4] breaking-changes: switch default branch to main
  2025-09-04 17:40     ` Junio C Hamano
@ 2025-09-05 10:06       ` Phillip Wood
  2025-09-05 15:04         ` Junio C Hamano
  0 siblings, 1 reply; 39+ messages in thread
From: Phillip Wood @ 2025-09-05 10:06 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

On 04/09/2025 18:40, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
> 
>> diff --git a/Documentation/BreakingChanges.adoc b/Documentation/BreakingChanges.adoc
>> index f8d2eba061c..eb92e6f6a7d 100644
>> --- a/Documentation/BreakingChanges.adoc
>> +++ b/Documentation/BreakingChanges.adoc
>> @@ -165,6 +165,11 @@ A prerequisite for this change is that the ecosystem is ready to support the
>>   "reftable" format. Most importantly, alternative implementations of Git like
>>   JGit, libgit2 and Gitoxide need to support it.
>>   
>> +* In new repositories the default branch name will be `main`. We have been
>> +  warning that the default name will change since 675704c74dd (init: provide
>> +  useful advice about init.defaultBranch, 2020-12-11).  The new name matches
>> +  the default branch name used by many of the big Git forges.
> 
> As I am not a native, this is a mere question and not a suggestion,
> but my reading hiccups when I see the lack of comma after "In new
> repositories".

I agree a comma would be good here
> "used by many of" -> "used for new repositories by many of"?

Sounds good
>> diff --git a/advice.c b/advice.c
>> index e5f0ff84491..48c49ee4145 100644
>> --- a/advice.c
>> +++ b/advice.c
>> @@ -51,7 +51,9 @@ static struct {
>>   	[ADVICE_AM_WORK_DIR] 				= { "amWorkDir" },
>>   	[ADVICE_CHECKOUT_AMBIGUOUS_REMOTE_BRANCH_NAME] 	= { "checkoutAmbiguousRemoteBranchName" },
>>   	[ADVICE_COMMIT_BEFORE_MERGE]			= { "commitBeforeMerge" },
>> +#ifndef WITH_BREAKING_CHANGES
>>   	[ADVICE_DEFAULT_BRANCH_NAME]			= { "defaultBranchName" },
>> +#endif /* WITH_BREAKING_CHANGES */
>>   	[ADVICE_DETACHED_HEAD]				= { "detachedHead" },
>>   	[ADVICE_DIVERGING]				= { "diverging" },
>>   	[ADVICE_FETCH_SET_HEAD_WARN]			= { "fetchRemoteHEADWarn" },
> 
> Would there be folks who type "git init" to get a 'main' branch,
> while trying to follow a recipe written in pre-3.0 days that assumes
> the initial branch is called differently, and get confused after
> seeing many commands written in the recipe for them to follow , like
> "git checkout -b next master" fail?  Do they need a different advice
> message to help them, i.e.e.g,
> 
>      $ git init
>      Initialized empty Git repository in /a/b/c/.git/
>      hint: Since Git 3.0, an initial branch is 'main' these days.
>      hint: If you need its name to be different (e.g. 'frotz'),
>      hint: you can immediately rename it with "git branch -m frotz".
>      hint: Disable this message with "got config set advice.foo false"
> 
> or something?  I dunno.  In any case, that will have to be a new and
> different advice message, and defaultBranchName should not be reused
> for that purpose, so the change in the the above hunk is fine.  I am
> wondering if we need a new entry protected by the same #ifdef on the
> #else side.

Personally I find the current advice pretty annoying and would be glad 
to see it go away. Are there really that many people who want to 
customize the initial branch name that it is worth adding some new 
advice post Git 3.0? Although I find it annoying, I do think the current 
advice serves a useful purpose as it informs people the default that 
they are used to is changing and that they can override it. Given how 
long we've been warning people I'm not sure we need to say anything once 
the default has changed.

>> diff --git a/ci/run-build-and-tests.sh b/ci/run-build-and-tests.sh
>> index 01823fd0f14..a21834043f3 100755
>> --- a/ci/run-build-and-tests.sh
>> +++ b/ci/run-build-and-tests.sh
>> @@ -9,7 +9,6 @@ run_tests=t
>>   
>>   case "$jobname" in
>>   linux-breaking-changes)
>> -	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>>   	export WITH_BREAKING_CHANGES=YesPlease
>>   	;;
> 
> OK.
> 
>>   linux-TEST-vars)
> 
> We have been very careful to make sure that none of our tests
> implicitly rely on that the initial branch name will still be
> 'master' with the above.  Now we should make sure that none of our
> tests implicitly assume that the initial branch name will forever be
> called 'main'.  In the post-context, linux-TEST-vars arm has
> something that forces the initial branch name to be 'master', and we
> probably should keep it for a while to serve that purpose.

That sounds sensible. I'll wait a few days to see if there are any other 
comments and then re-roll the the documentation tweaks you suggested above.

Thanks

Phillip

>> diff --git a/refs.c b/refs.c
>> index 4ff55cf24f6..149a8d1cec1 100644
>> --- a/refs.c
>> +++ b/refs.c
>> @@ -627,10 +627,12 @@ void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
>>   		strvec_pushf(prefixes, *p, len, prefix);
>>   }
>>   
>> +#ifndef WITH_BREAKING_CHANGES
>>   static const char default_branch_name_advice[] = N_(
>>   "Using '%s' as the name for the initial branch. This default branch name\n"
>> -"is subject to change. To configure the initial branch name to use in all\n"
>> -"of your new repositories, which will suppress this warning, call:\n"
>> +"will change to \"main\" in Git 3.0. To configure the initial branch name\n"
>> +"to use in all of your new repositories, which will suppress this warning,\n"
>> +"call:\n"
>>   "\n"
>>   "\tgit config --global init.defaultBranch <name>\n"
>>   "\n"
>> @@ -639,8 +641,9 @@ static const char default_branch_name_advice[] = N_(
>>   "\n"
>>   "\tgit branch -m <name>\n"
>>   );
>> +#endif /* WITH_BREAKING_CHANGES */
>>   
>> -char *repo_default_branch_name(struct repository *r, int quiet)
>> +char *repo_default_branch_name(struct repository *r, MAYBE_UNUSED int quiet)
>>   {
> 
> And if we were to introduce a new advice to help people who still
> expected the traditional name, this MAYBE_UNUSED would not become
> necessary ...
> 
>>   	const char *config_key = "init.defaultbranch";
>>   	const char *config_display_key = "init.defaultBranch";
>> @@ -649,14 +652,18 @@ char *repo_default_branch_name(struct repository *r, int quiet)
>>   
>>   	if (env && *env)
>>   		ret = xstrdup(env);
>> -	else if (repo_config_get_string(r, config_key, &ret) < 0)
>> +	if (!ret && repo_config_get_string(r, config_key, &ret) < 0)
>>   		die(_("could not retrieve `%s`"), config_display_key);
>>   
>>   	if (!ret) {
>> +#ifdef WITH_BREAKING_CHANGES
>> +		ret = xstrdup("main");
> 
> ... as we will have the same if (!quiet) advice sequence here,
> protected with a different ADVICE_ thing.
> 
>> +#else
>>   		ret = xstrdup("master");
>>   		if (!quiet)
>>   			advise_if_enabled(ADVICE_DEFAULT_BRANCH_NAME,
>>   					  _(default_branch_name_advice), ret);
>> +#endif /* WITH_BREAKING_CHANGES */
>>   	}
>>   
>>   	full_ref = xstrfmt("refs/heads/%s", ret);
> 
> Thanks.


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 3/4] t9902: switch default branch name to main
  2025-09-04 18:27     ` Junio C Hamano
@ 2025-09-05 10:07       ` Phillip Wood
  0 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-05 10:07 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

On 04/09/2025 19:27, Junio C Hamano wrote:
> Phillip Wood <phillip.wood123@gmail.com> writes:
> 
>> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>>
>> Remove the penultimate use of "GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=
>> main" in our test suite. We have slowly been removing these ever since
> 
> s|main|master|, probably?

Oops, yes

Thanks

Phillip
>> we started to switch the default branch name used in tests to "main".
>>
>> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
>> ---
>>   t/t9902-completion.sh | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
>> index 6650d33fba6..964e1f15693 100755
>> --- a/t/t9902-completion.sh
>> +++ b/t/t9902-completion.sh
>> @@ -11,9 +11,9 @@ test_description='test bash completion'
>>   # untraceable with such ancient Bash versions.
>>   test_untraceable=UnfortunatelyYes
>>   
>> -# Override environment and always use master for the default initial branch
>> +# Override environment and always use main for the default initial branch
>>   # name for these tests, so that rev completion candidates are as expected.
>> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
>> +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>>   export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>>   
>>   . ./lib-bash.sh
>> @@ -1453,7 +1453,7 @@ test_expect_success 'git bisect - start subcommand arguments before double-dash
>>   		HEAD Z
>>   		final Z
>>   		initial Z
>> -		master Z
>> +		main Z
>>   		EOF
>>   	)
>>   '


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 4/4] t0613: stop setting default initial branch
  2025-09-04 18:35     ` Junio C Hamano
@ 2025-09-05 10:09       ` Phillip Wood
  0 siblings, 0 replies; 39+ messages in thread
From: Phillip Wood @ 2025-09-05 10:09 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

On 04/09/2025 19:35, Junio C Hamano wrote:
> 
> Having to change this many "git init" invocations feels awkward,
> especially when we envision what needs to be done if somebody needs
> to update this file later.  I wonder if a new helper function
> upfront
> 
>          +init_repo () {
>          +	git init --initial-branch master repo
>          +}
>          +
> 
> with many changes like this to the rest of file
> 
> 	-	git init repo &&
> 	+	init_repo &&
> 
> may be easier to maintain over time?  I dunno.

Good idea, that would give us a convenient place to move the comment to 
as well

Thanks

Phillip


^ permalink raw reply	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 3/4] t9902: switch default branch name to main
  2025-09-04 13:21   ` [PATCH v2 3/4] t9902: " Phillip Wood
  2025-09-04 18:27     ` Junio C Hamano
@ 2025-09-05 12:14     ` Patrick Steinhardt
  1 sibling, 0 replies; 39+ messages in thread
From: Patrick Steinhardt @ 2025-09-05 12:14 UTC (permalink / raw)
  To: Phillip Wood
  Cc: git, Johannes Schindelin, Wing Huang, Junio C Hamano,
	Phillip Wood

On Thu, Sep 04, 2025 at 02:21:31PM +0100, Phillip Wood wrote:
> diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
> index 6650d33fba6..964e1f15693 100755
> --- a/t/t9902-completion.sh
> +++ b/t/t9902-completion.sh
> @@ -11,9 +11,9 @@ test_description='test bash completion'
>  # untraceable with such ancient Bash versions.
>  test_untraceable=UnfortunatelyYes
>  
> -# Override environment and always use master for the default initial branch
> +# Override environment and always use main for the default initial branch
>  # name for these tests, so that rev completion candidates are as expected.
> -GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
> +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
>  export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
>  
>  . ./lib-bash.sh
> @@ -1453,7 +1453,7 @@ test_expect_success 'git bisect - start subcommand arguments before double-dash
>  		HEAD Z
>  		final Z
>  		initial Z
> -		master Z
> +		main Z
>  		EOF
>  	)
>  '

Hm. Wouldn't it be preferable to do something like the below patch
instead? We would potentially also have to sort the output, but like
this we don't care about the initial branch name at all.

Patrick

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 6650d33fba..321005a06a 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -11,11 +11,6 @@ test_description='test bash completion'
 # untraceable with such ancient Bash versions.
 test_untraceable=UnfortunatelyYes
 
-# Override environment and always use master for the default initial branch
-# name for these tests, so that rev completion candidates are as expected.
-GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=master
-export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
-
 . ./lib-bash.sh
 
 complete ()
@@ -1449,11 +1444,11 @@ test_expect_success 'setup for git-bisect tests requiring a repo' '
 test_expect_success 'git bisect - start subcommand arguments before double-dash are completed as revs' '
 	(
 		cd git-bisect &&
-		test_completion "git bisect start " <<-\EOF
+		test_completion "git bisect start " <<-EOF
 		HEAD Z
 		final Z
 		initial Z
-		master Z
+		$(git branch --show-current) Z
 		EOF
 	)
 '

^ permalink raw reply related	[flat|nested] 39+ messages in thread

* Re: [PATCH v2 1/4] breaking-changes: switch default branch to main
  2025-09-05 10:06       ` Phillip Wood
@ 2025-09-05 15:04         ` Junio C Hamano
  0 siblings, 0 replies; 39+ messages in thread
From: Junio C Hamano @ 2025-09-05 15:04 UTC (permalink / raw)
  To: Phillip Wood; +Cc: git, Johannes Schindelin, Wing Huang, Patrick Steinhardt

Phillip Wood <phillip.wood123@gmail.com> writes:

>> Would there be folks who type "git init" to get a 'main' branch,
>> while trying to follow a recipe written in pre-3.0 days that assumes
>> the initial branch is called differently, and get confused after
>> seeing many commands written in the recipe for them to follow , like
>> "git checkout -b next master" fail?  Do they need a different advice
>> message to help them, i.e.e.g,
>>      $ git init
>>      Initialized empty Git repository in /a/b/c/.git/
>>      hint: Since Git 3.0, an initial branch is 'main' these days.
>>      hint: If you need its name to be different (e.g. 'frotz'),
>>      hint: you can immediately rename it with "git branch -m frotz".
>>      hint: Disable this message with "got config set advice.foo false"
>> or something?  I dunno.  In any case, that will have to be a new and
>> different advice message, and defaultBranchName should not be reused
>> for that purpose, so the change in the the above hunk is fine.  I am
>> wondering if we need a new entry protected by the same #ifdef on the
>> #else side.
>
> Personally I find the current advice pretty annoying and would be glad
> to see it go away. Are there really that many people who want to
> customize the initial branch name that it is worth adding some new
> advice post Git 3.0?

Given that the tutorial materials that were written when we gave the
init.defaultBranchName mechanism _all_ assumed that by default the
initial branch that gets created is called 'master', the current
advice messages were primarily not about usability but personal
preference.  The message targets those who dislike 'master' so much
that they are willing to replace all 'master' they read in the
tutorial material as 'main' if they are following an existing
tutorial material.  And the instruction is primarily about how to
switch to a new default permanently with the configuration.

But the one that I pointed out as missing in your proposal is quite
different.  It is meant for those who need help about usability, not
personal preference.  Even if they strongly prefer 'main' over
'master', in order to follow along an existing tutorial material,
they will find it less error prone if the initial branch used in
their practice repository were 'master'.  That is why the
instruction is only about recovering only _this_ repository they
just have created (Notice that I did not tell them how to use the
configuration mechanism to permanently live in the past in the above
"... or something?" example?  It is very deliberate---"the world has
moved, so should they, except for this single instance" is the
message they need to hear).

> Although I find it annoying, I do think the
> current advice serves a useful purpose as it informs people the
> default that they are used to is changing and that they can override
> it. Given how long we've been warning people I'm not sure we need to
> say anything once the default has changed.

You need to remember that there always are new users who use Git
seriously for the first time _after_ switchover happens.

Because it is more about usability than preference, I see at least
the same degree of need, if not more, to help these people who still
need to use the old name to follow along the tutorial material than
those who have been helped by the existing "Sorry you got 'master',
but you may prefer a different name, and you can do so by doing
these things" message,

^ permalink raw reply	[flat|nested] 39+ messages in thread

end of thread, other threads:[~2025-09-05 15:04 UTC | newest]

Thread overview: 39+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-08-27 15:24 [PATCH 0/6] breaking changes: switch default initial branch name to "main" Phillip Wood
2025-08-27 15:24 ` [PATCH 1/6] t0018: switch default branch name to main Phillip Wood
2025-08-27 17:21   ` Junio C Hamano
2025-08-28 14:00     ` Phillip Wood
2025-08-28 16:49       ` Junio C Hamano
2025-08-28 21:31         ` brian m. carlson
2025-08-27 15:24 ` [PATCH 2/6] t4013: " Phillip Wood
2025-08-27 15:24 ` [PATCH 3/6] t9902: " Phillip Wood
2025-08-27 15:24 ` [PATCH 4/6] t0613: stop setting default initial branch Phillip Wood
2025-08-27 17:30   ` Junio C Hamano
2025-08-27 15:24 ` [PATCH 5/6] t1403: remove dependency on GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME Phillip Wood
2025-08-27 15:24 ` [PATCH 6/6] breaking-changes: switch default branch to main Phillip Wood
2025-08-27 18:41   ` Junio C Hamano
2025-09-02 11:36   ` Patrick Steinhardt
2025-09-02 15:13     ` Phillip Wood
2025-09-03  4:44       ` Patrick Steinhardt
2025-09-03  9:54         ` Phillip Wood
2025-09-03 11:51           ` Patrick Steinhardt
2025-09-03 18:40           ` Junio C Hamano
2025-09-04  7:09             ` Patrick Steinhardt
2025-09-04 13:30               ` Phillip Wood
2025-09-05  6:07                 ` Patrick Steinhardt
2025-09-04 13:27             ` Phillip Wood
2025-08-28 13:12 ` [PATCH 0/6] breaking changes: switch default initial branch name to "main" Johannes Schindelin
2025-09-04 13:21 ` [PATCH v2 0/4] " Phillip Wood
2025-09-04 13:21   ` [PATCH v2 1/4] breaking-changes: switch default branch to main Phillip Wood
2025-09-04 17:40     ` Junio C Hamano
2025-09-05 10:06       ` Phillip Wood
2025-09-05 15:04         ` Junio C Hamano
2025-09-04 13:21   ` [PATCH v2 2/4] t4013: switch default branch name " Phillip Wood
2025-09-04 13:21   ` [PATCH v2 3/4] t9902: " Phillip Wood
2025-09-04 18:27     ` Junio C Hamano
2025-09-05 10:07       ` Phillip Wood
2025-09-05 12:14     ` Patrick Steinhardt
2025-09-04 13:21   ` [PATCH v2 4/4] t0613: stop setting default initial branch Phillip Wood
2025-09-04 18:35     ` Junio C Hamano
2025-09-05 10:09       ` Phillip Wood
2025-09-04 17:03   ` [PATCH v2 0/4] breaking changes: switch default initial branch name to "main" Junio C Hamano
2025-09-04 18:47     ` Phillip Wood

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