[PATCH v5 1/4] stash: add --ours-label, --theirs-label, --base-label for apply

["Harald Nordgren via GitGitGadget" <gitgitgadget@gmail.com>]

From: Harald Nordgren <haraldnordgren@gmail.com>

Allow callers of "git stash apply" to pass custom labels for conflict
markers instead of the default "Updated upstream" and "Stashed changes".
Document the new options and add a test.

Signed-off-by: Harald Nordgren <haraldnordgren@gmail.com>
---
 Documentation/git-stash.adoc | 11 ++++++++++-
 builtin/stash.c              |  2 +-
 t/t3903-stash.sh             | 18 ++++++++++++++++++
 3 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/Documentation/git-stash.adoc b/Documentation/git-stash.adoc
index 235d57ddd8..43650a3c1a 100644
--- a/Documentation/git-stash.adoc
+++ b/Documentation/git-stash.adoc
@@ -12,7 +12,7 @@ git stash list [<log-options>]
 git stash show [-u | --include-untracked | --only-untracked] [<diff-options>] [<stash>]
 git stash drop [-q | --quiet] [<stash>]
 git stash pop [--index] [-q | --quiet] [<stash>]
-git stash apply [--index] [-q | --quiet] [<stash>]
+git stash apply [--index] [-q | --quiet] [--ours-label=<label>] [--theirs-label=<label>] [--base-label=<label>] [<stash>]
 git stash branch <branchname> [<stash>]
 git stash [push [-p | --patch] [-S | --staged] [-k | --[no-]keep-index] [-q | --quiet]
 	     [-u | --include-untracked] [-a | --all] [(-m | --message) <message>]
@@ -197,6 +197,15 @@ the index's ones. However, this can fail, when you have conflicts
 (which are stored in the index, where you therefore can no longer
 apply the changes as they were originally).
 
+`--ours-label=<label>`::
+`--theirs-label=<label>`::
+`--base-label=<label>`::
+	These options are only valid for the `apply` command.
++
+Use the given labels in conflict markers instead of the default
+"Updated upstream", "Stashed changes", and "Stash base".
+`--base-label` only has an effect with merge.conflictStyle=diff3.
+
 `-k`::
 `--keep-index`::
 `--no-keep-index`::
diff --git a/builtin/stash.c b/builtin/stash.c
index e79d612e57..252e4df3a9 100644
--- a/builtin/stash.c
+++ b/builtin/stash.c
@@ -44,7 +44,7 @@
 #define BUILTIN_STASH_POP_USAGE \
 	N_("git stash pop [--index] [-q | --quiet] [<stash>]")
 #define BUILTIN_STASH_APPLY_USAGE \
-	N_("git stash apply [--index] [-q | --quiet] [<stash>]")
+	N_("git stash apply [--index] [-q | --quiet] [--ours-label=<label>] [--theirs-label=<label>] [--base-label=<label>] [<stash>]")
 #define BUILTIN_STASH_BRANCH_USAGE \
 	N_("git stash branch <branchname> [<stash>]")
 #define BUILTIN_STASH_STORE_USAGE \
diff --git a/t/t3903-stash.sh b/t/t3903-stash.sh
index 70879941c2..dd47c1322a 100755
--- a/t/t3903-stash.sh
+++ b/t/t3903-stash.sh
@@ -1666,6 +1666,24 @@ test_expect_success 'restore untracked files even when we hit conflicts' '
 	)
 '
 
+test_expect_success 'apply with custom conflict labels' '
+	git init conflict_labels &&
+	(
+		cd conflict_labels &&
+		echo base >file &&
+		git add file &&
+		git commit -m base &&
+		echo stashed >file &&
+		git stash push -m "stashed" &&
+		echo upstream >file &&
+		git add file &&
+		git commit -m upstream &&
+		test_must_fail git stash apply --ours-label=UP --theirs-label=STASH &&
+		grep "^<<<<<<< UP" file &&
+		grep "^>>>>>>> STASH" file
+	)
+'
+
 test_expect_success 'stash create reports a locked index' '
 	test_when_finished "rm -rf repo" &&
 	git init repo &&
-- 
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