[PATCH 0/6] per branch options for git-merge

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* [PATCH 0/6] per branch options for git-merge
@ 2007-09-23 22:51 Lars Hjemli
  2007-09-23 22:51 ` [PATCH 1/6] Add test-script for git-merge porcelain Lars Hjemli
  0 siblings, 1 reply; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

This patch-series implements support for per branch configuration of
git-merge, using entries (branch.<name>.mergeoptions) in .git/config.
Since this makes it possible to specify --no-commit and --squash as
default options for git-merge, the new options --commit and --no-squash
are added to enable users to override such defaults.

There is also a new option, --no-ff, which can be used to force git-merge
to create a merge commit even when the merge was a fast-forward (and a
matching --ff option to allow overrides).

Shortlog:
  Add test-script for git-merge porcelain
  git-merge: fix faulty SQUASH_MSG
  git-merge: refactor option parsing
  git-merge: add support for branch.<name>.mergeoptions
  git-merge: add support for --commit and --no-squash
  git-merge: add --ff and --no-ff options

Diffstat:
 Documentation/config.txt        |    6 +
 Documentation/git-merge.txt     |    4 +
 Documentation/merge-options.txt |   17 ++
 git-merge.sh                    |   65 +++++-
 t/t7600-merge.sh                |  440 +++++++++++++++++++++++++++++++++++++++
 5 files changed, 521 insertions(+), 11 deletions(-)

^ permalink raw reply	[flat|nested] 7+ messages in thread

* [PATCH 1/6] Add test-script for git-merge porcelain
  2007-09-23 22:51 [PATCH 0/6] per branch options for git-merge Lars Hjemli
@ 2007-09-23 22:51 ` Lars Hjemli
  2007-09-23 22:51   ` [PATCH 2/6] git-merge: fix faulty SQUASH_MSG Lars Hjemli
  0 siblings, 1 reply; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

This test-script excercises the porcelainish aspects of git-merge, and
does it thoroughly enough to detect a small bug already noticed by Junio:
squashing an octopus generates a faulty .git/SQUASH_MSG.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
---
 t/t7600-merge.sh |  344 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 344 insertions(+), 0 deletions(-)
 create mode 100755 t/t7600-merge.sh

diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
new file mode 100755
index 0000000..dec6ea2
--- /dev/null
+++ b/t/t7600-merge.sh
@@ -0,0 +1,344 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Lars Hjemli
+#
+
+test_description='git-merge
+
+Testing basic merge operations/option parsing.'
+
+. ./test-lib.sh
+
+cat >file <<EOF
+1
+2
+3
+4
+5
+6
+7
+8
+9
+EOF
+
+cat >file.1 <<EOF
+1 X
+2
+3
+4
+5
+6
+7
+8
+9
+EOF
+
+cat >file.5 <<EOF
+1
+2
+3
+4
+5 X
+6
+7
+8
+9
+EOF
+
+cat >file.9 <<EOF
+1
+2
+3
+4
+5
+6
+7
+8
+9 X
+EOF
+
+cat  >result.1 <<EOF
+1 X
+2
+3
+4
+5
+6
+7
+8
+9
+EOF
+
+cat >result.1-5 <<EOF
+1 X
+2
+3
+4
+5 X
+6
+7
+8
+9
+EOF
+
+cat >result.1-5-9 <<EOF
+1 X
+2
+3
+4
+5 X
+6
+7
+8
+9 X
+EOF
+
+create_merge_msgs() {
+	echo "Merge commit 'c2'" >msg.1-5 &&
+	echo "Merge commit 'c2'; commit 'c3'" >msg.1-5-9 &&
+	echo "Squashed commit of the following:" >squash.1 &&
+	echo >>squash.1 &&
+	git log --no-merges ^HEAD c1 >>squash.1 &&
+	echo "Squashed commit of the following:" >squash.1-5 &&
+	echo >>squash.1-5 &&
+	git log --no-merges ^HEAD c2 >>squash.1-5 &&
+	echo "Squashed commit of the following:" >squash.1-5-9 &&
+	echo >>squash.1-5-9 &&
+	git log --no-merges ^HEAD c2 c3 >>squash.1-5-9
+}
+
+verify_diff() {
+	if ! diff -u "$1" "$2"
+	then
+		echo "$3"
+		false
+	fi
+}
+
+verify_merge() {
+	verify_diff "$2" "$1" "[OOPS] bad merge result" &&
+	if test $(git ls-files -u | wc -l) -gt 0
+	then
+		echo "[OOPS] unmerged files"
+		false
+	fi &&
+	if ! git diff --exit-code
+	then
+		echo "[OOPS] working tree != index"
+		false
+	fi &&
+	if test -n "$3"
+	then
+		git show -s --pretty=format:%s HEAD >msg.act &&
+		verify_diff "$3" msg.act "[OOPS] bad merge message"
+	fi
+}
+
+verify_head() {
+	if test "$1" != "$(git rev-parse HEAD)"
+	then
+		echo "[OOPS] HEAD != $1"
+		false
+	fi
+}
+
+verify_parents() {
+	i=1
+	while test $# -gt 0
+	do
+		if test "$1" != "$(git rev-parse HEAD^$i)"
+		then
+			echo "[OOPS] HEAD^$i != $1"
+			return 1
+		fi
+		i=$(expr $i + 1)
+		shift
+	done
+}
+
+verify_mergeheads() {
+	i=1
+	if ! test -f .git/MERGE_HEAD
+	then
+		echo "[OOPS] MERGE_HEAD is missing"
+		false
+	fi &&
+	while test $# -gt 0
+	do
+		head=$(head -n $i .git/MERGE_HEAD | tail -n 1)
+		if test "$1" != "$head"
+		then
+			echo "[OOPS] MERGE_HEAD $i != $1"
+			return 1
+		fi
+		i=$(expr $i + 1)
+		shift
+	done
+}
+
+verify_no_mergehead() {
+	if test -f .git/MERGE_HEAD
+	then
+		echo "[OOPS] MERGE_HEAD exists"
+		false
+	fi
+}
+
+
+test_expect_success 'setup' '
+	git add file &&
+	test_tick &&
+	git commit -m "commit 0" &&
+	git tag c0 &&
+	c0=$(git rev-parse HEAD) &&
+	cp file.1 file &&
+	git add file &&
+	test_tick &&
+	git commit -m "commit 1" &&
+	git tag c1 &&
+	c1=$(git rev-parse HEAD) &&
+	git reset --hard "$c0" &&
+	cp file.5 file &&
+	git add file &&
+	test_tick &&
+	git commit -m "commit 2" &&
+	git tag c2 &&
+	c2=$(git rev-parse HEAD) &&
+	git reset --hard "$c0" &&
+	cp file.9 file &&
+	git add file &&
+	test_tick &&
+	git commit -m "commit 3" &&
+	git tag c3 &&
+	c3=$(git rev-parse HEAD)
+	git reset --hard "$c0" &&
+	create_merge_msgs
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'test option parsing' '
+	if git merge -$ c1
+	then
+		echo "[OOPS] -$ accepted"
+		false
+	fi &&
+	if git merge --no-such c1
+	then
+		echo "[OOPS] --no-such accepted"
+		false
+	fi &&
+	if git merge -s foobar c1
+	then
+		echo "[OOPS] -s foobar accepted"
+		false
+	fi &&
+	if git merge -s=foobar c1
+	then
+		echo "[OOPS] -s=foobar accepted"
+		false
+	fi &&
+	if git merge -m
+	then
+		echo "[OOPS] missing commit msg accepted"
+		false
+	fi &&
+	if git merge
+	then
+		echo "[OOPS] missing commit references accepted"
+		false
+	fi
+'
+
+test_expect_success 'merge c0 with c1' '
+	git reset --hard c0 &&
+	git merge c1 &&
+	verify_merge file result.1 &&
+	verify_head "$c1"
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2' '
+	git reset --hard c1 &&
+	test_tick &&
+	git merge c2 &&
+	verify_merge file result.1-5 msg.1-5 &&
+	verify_parents $c1 $c2
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 and c3' '
+	git reset --hard c1 &&
+	test_tick &&
+	git merge c2 c3 &&
+	verify_merge file result.1-5-9 msg.1-5-9 &&
+	verify_parents $c1 $c2 $c3
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c0 with c1 (no-commit)' '
+	git reset --hard c0 &&
+	git merge --no-commit c1 &&
+	verify_merge file result.1 &&
+	verify_head $c1
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 (no-commit)' '
+	git reset --hard c1 &&
+	git merge --no-commit c2 &&
+	verify_merge file result.1-5 &&
+	verify_head $c1 &&
+	verify_mergeheads $c2
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 and c3 (no-commit)' '
+	git reset --hard c1 &&
+	git merge --no-commit c2 c3 &&
+	verify_merge file result.1-5-9 &&
+	verify_head $c1 &&
+	verify_mergeheads $c2 $c3
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c0 with c1 (squash)' '
+	git reset --hard c0 &&
+	git merge --squash c1 &&
+	verify_merge file result.1 &&
+	verify_head $c0 &&
+	verify_no_mergehead &&
+	verify_diff squash.1 .git/SQUASH_MSG "[OOPS] bad squash message"
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 (squash)' '
+	git reset --hard c1 &&
+	git merge --squash c2 &&
+	verify_merge file result.1-5 &&
+	verify_head $c1 &&
+	verify_no_mergehead &&
+	verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 and c3 (squash)' '
+	git reset --hard c1 &&
+	git merge --squash c2 c3 &&
+	verify_merge file result.1-5-9 &&
+	verify_head $c1 &&
+	verify_no_mergehead &&
+	verify_diff squash.1-5-9 .git/SQUASH_MSG "[OOPS] bad squash message"
+'
+
+test_debug 'gitk --all'
+
+test_done
-- 
1.5.3.2.82.g75c8d

^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 2/6] git-merge: fix faulty SQUASH_MSG
  2007-09-23 22:51 ` [PATCH 1/6] Add test-script for git-merge porcelain Lars Hjemli
@ 2007-09-23 22:51   ` Lars Hjemli
  2007-09-23 22:51     ` [PATCH 3/6] git-merge: refactor option parsing Lars Hjemli
  0 siblings, 1 reply; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

Only the first 'remote' head is currently specified as an argument to 'git
log' when generating a SQUSH_MSG, which makes the generated message fail
to mention every commit involved in the merge. This fixes the problem.

Noticed-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
---
 git-merge.sh |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/git-merge.sh b/git-merge.sh
index 3a01db0..3857634 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -59,7 +59,7 @@ finish_up_to_date () {
 squash_message () {
 	echo Squashed commit of the following:
 	echo
-	git log --no-merges ^"$head" $remote
+	git log --no-merges ^"$head" $remoteheads
 }
 
 finish () {
-- 
1.5.3.2.82.g75c8d

^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 3/6] git-merge: refactor option parsing
  2007-09-23 22:51   ` [PATCH 2/6] git-merge: fix faulty SQUASH_MSG Lars Hjemli
@ 2007-09-23 22:51     ` Lars Hjemli
  2007-09-23 22:51       ` [PATCH 4/6] git-merge: add support for branch.<name>.mergeoptions Lars Hjemli
  0 siblings, 1 reply; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

Move the option parsing into a separate function as preparation for reuse
by the next commit.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
---
 git-merge.sh |   20 ++++++++++++++------
 1 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/git-merge.sh b/git-merge.sh
index 3857634..68b3503 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -119,11 +119,7 @@ merge_name () {
 	fi
 }
 
-case "$#" in 0) usage ;; esac
-
-have_message=
-while case "$#" in 0) break ;; esac
-do
+parse_option () {
 	case "$1" in
 	-n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
 		--no-summa|--no-summar|--no-summary)
@@ -166,9 +162,21 @@ do
 		have_message=t
 		;;
 	-*)	usage ;;
-	*)	break ;;
+	*)	return 1 ;;
 	esac
 	shift
+	args_left="$#"
+}
+
+case "$#" in 0) usage ;; esac
+
+have_message=
+while parse_option "$@"
+do
+	while test $args_left -lt $#
+	do
+		shift
+	done
 done
 
 if test -z "$show_diffstat"; then
-- 
1.5.3.2.82.g75c8d

^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 4/6] git-merge: add support for branch.<name>.mergeoptions
  2007-09-23 22:51     ` [PATCH 3/6] git-merge: refactor option parsing Lars Hjemli
@ 2007-09-23 22:51       ` Lars Hjemli
  2007-09-23 22:51         ` [PATCH 5/6] git-merge: add support for --commit and --no-squash Lars Hjemli
  0 siblings, 1 reply; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

This enables per branch configuration of merge options. Currently, the most
useful options to specify per branch are --squash, --summary/--no-summary
and possibly --strategy, but all options are supported.

Note: Options containing whitespace will _not_ be handled correctly. Luckily,
the only option which can include whitespace is --message and it doesn't
make much sense to give that option a default value.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
---
 Documentation/config.txt    |    6 ++++
 Documentation/git-merge.txt |    4 +++
 git-merge.sh                |   21 ++++++++++++++++
 t/t7600-merge.sh            |   54 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 85 insertions(+), 0 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 015910f..d3c25f3 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -337,6 +337,12 @@ branch.<name>.merge::
 	branch.<name>.merge to the desired branch, and use the special setting
 	`.` (a period) for branch.<name>.remote.
 
+branch.<name>.mergeoptions::
+	Sets default options for merging into branch <name>. The syntax and
+	supported options are equal to that of gitlink:git-merge[1], but
+	option values containing whitespace characters are currently not
+	supported.
+
 clean.requireForce::
 	A boolean to make git-clean do nothing unless given -f or -n.  Defaults
 	to false.
diff --git a/Documentation/git-merge.txt b/Documentation/git-merge.txt
index 144bc16..b1771a1 100644
--- a/Documentation/git-merge.txt
+++ b/Documentation/git-merge.txt
@@ -58,6 +58,10 @@ merge.verbosity::
 	above outputs debugging information.  The default is level 2.
 	Can be overriden by 'GIT_MERGE_VERBOSITY' environment variable.
 
+branch.<name>.mergeoptions::
+	Sets default options for merging into branch <name>. The syntax and
+	supported options are equal to that of git-merge, but option values
+	containing whitespace characters are currently not supported.
 
 HOW MERGE WORKS
 ---------------
diff --git a/git-merge.sh b/git-merge.sh
index 68b3503..e95d4a7 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -168,9 +168,30 @@ parse_option () {
 	args_left="$#"
 }
 
+parse_config () {
+	while test $# -gt 0
+	do
+		parse_option "$@" || usage
+		while test $args_left -lt $#
+		do
+			shift
+		done
+	done
+}
+
 case "$#" in 0) usage ;; esac
 
 have_message=
+
+if branch=$(git-symbolic-ref -q HEAD)
+then
+	mergeopts=$(git config "branch.${branch#refs/heads/}.mergeoptions")
+	if test -n "$mergeopts"
+	then
+		parse_config $mergeopts
+	fi
+fi
+
 while parse_option "$@"
 do
 	while test $args_left -lt $#
diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index dec6ea2..110974c 100755
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -341,4 +341,58 @@ test_expect_success 'merge c1 with c2 and c3 (squash)' '
 
 test_debug 'gitk --all'
 
+test_expect_success 'merge c1 with c2 (no-commit in config)' '
+	git reset --hard c1 &&
+	git config branch.master.mergeoptions "--no-commit" &&
+	git merge c2 &&
+	verify_merge file result.1-5 &&
+	verify_head $c1 &&
+	verify_mergeheads $c2
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 (squash in config)' '
+	git reset --hard c1 &&
+	git config branch.master.mergeoptions "--squash" &&
+	git merge c2 &&
+	verify_merge file result.1-5 &&
+	verify_head $c1 &&
+	verify_no_mergehead &&
+	verify_diff squash.1-5 .git/SQUASH_MSG "[OOPS] bad squash message"
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'override config option -n' '
+	git reset --hard c1 &&
+	git config branch.master.mergeoptions "-n" &&
+	test_tick &&
+	git merge --summary c2 >diffstat.txt &&
+	verify_merge file result.1-5 msg.1-5 &&
+	verify_parents $c1 $c2 &&
+	if ! grep -e "^ file | \+2 +-$" diffstat.txt
+	then
+		echo "[OOPS] diffstat was not generated"
+	fi
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'override config option --summary' '
+	git reset --hard c1 &&
+	git config branch.master.mergeoptions "--summary" &&
+	test_tick &&
+	git merge -n c2 >diffstat.txt &&
+	verify_merge file result.1-5 msg.1-5 &&
+	verify_parents $c1 $c2 &&
+	if grep -e "^ file | \+2 +-$" diffstat.txt
+	then
+		echo "[OOPS] diffstat was generated"
+		false
+	fi
+'
+
+test_debug 'gitk --all'
+
 test_done
-- 
1.5.3.2.82.g75c8d

^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 5/6] git-merge: add support for --commit and --no-squash
  2007-09-23 22:51       ` [PATCH 4/6] git-merge: add support for branch.<name>.mergeoptions Lars Hjemli
@ 2007-09-23 22:51         ` Lars Hjemli
  2007-09-23 22:51           ` [PATCH 6/6] git-merge: add --ff and --no-ff options Lars Hjemli
  0 siblings, 1 reply; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

These options can be used to override --no-commit and --squash, which is
needed since --no-commit and --squash now can be specified as default merge
options in $GIT_DIR/config.

The change also introduces slightly different behavior for --no-commit:
when specified, it explicitly overrides --squash. Earlier,
'git merge --squash --no-commit' would result in a squashed merge (i.e. no
$GIT_DIR/MERGE_HEAD was created) but with this patch the command will
behave as if --squash hadn't been specified.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
---
 Documentation/merge-options.txt |    8 ++++++++
 git-merge.sh                    |    8 ++++++--
 t/t7600-merge.sh                |   22 ++++++++++++++++++++++
 3 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/Documentation/merge-options.txt b/Documentation/merge-options.txt
index d64c259..0464a34 100644
--- a/Documentation/merge-options.txt
+++ b/Documentation/merge-options.txt
@@ -10,6 +10,10 @@
 	not autocommit, to give the user a chance to inspect and
 	further tweak the merge result before committing.
 
+--commit::
+	Perform the merge and commit the result. This option can
+	be used to override --no-commit.
+
 --squash::
 	Produce the working tree and index state as if a real
 	merge happened, but do not actually make a commit or
@@ -19,6 +23,10 @@
 	top of the current branch whose effect is the same as
 	merging another branch (or more in case of an octopus).
 
+--no-squash::
+	Perform the merge and commit the result. This option can
+	be used to override --squash.
+
 -s <strategy>, \--strategy=<strategy>::
 	Use the given merge strategy; can be supplied more than
 	once to specify them in the order they should be tried.
diff --git a/git-merge.sh b/git-merge.sh
index e95d4a7..ee8342d 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Junio C Hamano
 #
 
-USAGE='[-n] [--summary] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
+USAGE='[-n] [--summary] [--[no-]commit] [--[no-]squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
 
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
@@ -128,8 +128,12 @@ parse_option () {
 		show_diffstat=t ;;
 	--sq|--squ|--squa|--squas|--squash)
 		squash=t no_commit=t ;;
+	--no-sq|--no-squ|--no-squa|--no-squas|--no-squash)
+		squash= no_commit= ;;
+	--c|--co|--com|--comm|--commi|--commit)
+		squash= no_commit= ;;
 	--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
-		no_commit=t ;;
+		squash= no_commit=t ;;
 	-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
 		--strateg=*|--strategy=*|\
 	-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index 110974c..b0ef488 100755
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -395,4 +395,26 @@ test_expect_success 'override config option --summary' '
 
 test_debug 'gitk --all'
 
+test_expect_success 'merge c1 with c2 (override --no-commit)' '
+	git reset --hard c1 &&
+	git config branch.master.mergeoptions "--no-commit" &&
+	test_tick &&
+	git merge --commit c2 &&
+	verify_merge file result.1-5 msg.1-5 &&
+	verify_parents $c1 $c2
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c1 with c2 (override --squash)' '
+	git reset --hard c1 &&
+	git config branch.master.mergeoptions "--squash" &&
+	test_tick &&
+	git merge --no-squash c2 &&
+	verify_merge file result.1-5 msg.1-5 &&
+	verify_parents $c1 $c2
+'
+
+test_debug 'gitk --all'
+
 test_done
-- 
1.5.3.2.82.g75c8d

^ permalink raw reply related	[flat|nested] 7+ messages in thread

* [PATCH 6/6] git-merge: add --ff and --no-ff options
  2007-09-23 22:51         ` [PATCH 5/6] git-merge: add support for --commit and --no-squash Lars Hjemli
@ 2007-09-23 22:51           ` Lars Hjemli
  0 siblings, 0 replies; 7+ messages in thread
From: Lars Hjemli @ 2007-09-23 22:51 UTC (permalink / raw)
  To: Junio C Hamano; +Cc: git

These new options can be used to control the policy for fast-forward
merges: --ff allows it (this is the default) while --no-ff will create
a merge commit.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
---
 Documentation/merge-options.txt |    9 +++++++++
 git-merge.sh                    |   22 ++++++++++++++++------
 t/t7600-merge.sh                |   20 ++++++++++++++++++++
 3 files changed, 45 insertions(+), 6 deletions(-)

diff --git a/Documentation/merge-options.txt b/Documentation/merge-options.txt
index 0464a34..9f1fc82 100644
--- a/Documentation/merge-options.txt
+++ b/Documentation/merge-options.txt
@@ -27,6 +27,15 @@
 	Perform the merge and commit the result. This option can
 	be used to override --squash.
 
+--no-ff::
+	Generate a merge commit even if the merge resolved as a
+	fast-forward.
+
+--ff::
+	Do not generate a merge commit if the merge resolved as
+	a fast-forward, only update the branch pointer. This is
+	the default behavior of git-merge.
+
 -s <strategy>, \--strategy=<strategy>::
 	Use the given merge strategy; can be supplied more than
 	once to specify them in the order they should be tried.
diff --git a/git-merge.sh b/git-merge.sh
index ee8342d..212e0ee 100755
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Junio C Hamano
 #
 
-USAGE='[-n] [--summary] [--[no-]commit] [--[no-]squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
+USAGE='[-n] [--summary] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s <strategy>] [-m=<merge-message>] <commit>+'
 
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
@@ -127,13 +127,17 @@ parse_option () {
 	--summary)
 		show_diffstat=t ;;
 	--sq|--squ|--squa|--squas|--squash)
-		squash=t no_commit=t ;;
+		allow_fast_forward=t squash=t no_commit=t ;;
 	--no-sq|--no-squ|--no-squa|--no-squas|--no-squash)
-		squash= no_commit= ;;
+		allow_fast_forward=t squash= no_commit= ;;
 	--c|--co|--com|--comm|--commi|--commit)
-		squash= no_commit= ;;
+		allow_fast_forward=t squash= no_commit= ;;
 	--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
-		squash= no_commit=t ;;
+		allow_fast_forward=t squash= no_commit=t ;;
+	--ff)
+		allow_fast_forward=t squash= no_commit= ;;
+	--no-ff)
+		allow_fast_forward=false squash= no_commit= ;;
 	-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
 		--strateg=*|--strategy=*|\
 	-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
@@ -477,7 +481,13 @@ done
 # auto resolved the merge cleanly.
 if test '' != "$result_tree"
 then
-    parents=$(git show-branch --independent "$head" "$@" | sed -e 's/^/-p /')
+    if test "$allow_fast_forward" = "t"
+    then
+        parents=$(git show-branch --independent "$head" "$@")
+    else
+        parents=$(git rev-parse "$head" "$@")
+    fi
+    parents=$(echo "$parents" | sed -e 's/^/-p /')
     result_commit=$(printf '%s\n' "$merge_msg" | git commit-tree $result_tree $parents) || exit
     finish "$result_commit" "Merge made by $wt_strategy."
     dropsave
diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index b0ef488..6424c6e 100755
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -417,4 +417,24 @@ test_expect_success 'merge c1 with c2 (override --squash)' '
 
 test_debug 'gitk --all'
 
+test_expect_success 'merge c0 with c1 (no-ff)' '
+	git reset --hard c0 &&
+	test_tick &&
+	git merge --no-ff c1 &&
+	verify_merge file result.1 &&
+	verify_parents $c0 $c1
+'
+
+test_debug 'gitk --all'
+
+test_expect_success 'merge c0 with c1 (ff overrides no-ff)' '
+	git reset --hard c0 &&
+	git config branch.master.mergeoptions "--no-ff" &&
+	git merge --ff c1 &&
+	verify_merge file result.1 &&
+	verify_head $c1
+'
+
+test_debug 'gitk --all'
+
 test_done
-- 
1.5.3.2.82.g75c8d

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2007-09-23 22:52 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-09-23 22:51 [PATCH 0/6] per branch options for git-merge Lars Hjemli
2007-09-23 22:51 ` [PATCH 1/6] Add test-script for git-merge porcelain Lars Hjemli
2007-09-23 22:51   ` [PATCH 2/6] git-merge: fix faulty SQUASH_MSG Lars Hjemli
2007-09-23 22:51     ` [PATCH 3/6] git-merge: refactor option parsing Lars Hjemli
2007-09-23 22:51       ` [PATCH 4/6] git-merge: add support for branch.<name>.mergeoptions Lars Hjemli
2007-09-23 22:51         ` [PATCH 5/6] git-merge: add support for --commit and --no-squash Lars Hjemli
2007-09-23 22:51           ` [PATCH 6/6] git-merge: add --ff and --no-ff options Lars Hjemli

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