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-rw-r--r--builtin-commit.c2
-rwxr-xr-xt/t7501-commit.sh17
2 files changed, 18 insertions, 1 deletions
diff --git a/builtin-commit.c b/builtin-commit.c
index ad9f9211b..518ebe034 100644
--- a/builtin-commit.c
+++ b/builtin-commit.c
@@ -537,7 +537,7 @@ static int parse_and_validate_options(int argc, const char *argv[],
die("Option -m cannot be combined with -c/-C/-F.");
if (edit_message)
use_message = edit_message;
- if (amend)
+ if (amend && !use_message)
use_message = "HEAD";
if (use_message) {
unsigned char sha1[20];
diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 05aa97d6f..d1a415a12 100755
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -310,4 +310,21 @@ test_expect_success 'same tree (merge and amend merge)' '
'
+test_expect_success 'amend using the message from another commit' '
+
+ git reset --hard &&
+ test_tick &&
+ git commit --allow-empty -m "old commit" &&
+ old=$(git rev-parse --verify HEAD) &&
+ test_tick &&
+ git commit --allow-empty -m "new commit" &&
+ new=$(git rev-parse --verify HEAD) &&
+ test_tick &&
+ git commit --allow-empty --amend -C "$old" &&
+ git show --pretty="format:%ad %s" "$old" >expected &&
+ git show --pretty="format:%ad %s" HEAD >actual &&
+ diff -u expected actual
+
+'
+
test_done