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-rw-r--r--builtin/commit.c6
-rwxr-xr-xt/t7501-commit.sh20
2 files changed, 23 insertions, 3 deletions
diff --git a/builtin/commit.c b/builtin/commit.c
index c733ec98b7..e13303787a 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -694,7 +694,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
}
}
- if (message.len) {
+ if (have_option_m) {
strbuf_addbuf(&sb, &message);
hook_arg1 = "message";
} else if (logfile && !strcmp(logfile, "-")) {
@@ -1171,9 +1171,9 @@ static int parse_and_validate_options(int argc, const char *argv[],
f++;
if (f > 1)
die(_("Only one of -c/-C/-F/--fixup can be used."));
- if (message.len && f > 0)
+ if (have_option_m && f > 0)
die((_("Option -m cannot be combined with -c/-C/-F/--fixup.")));
- if (f || message.len)
+ if (f || have_option_m)
template_file = NULL;
if (edit_message)
use_message = edit_message;
diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 63e04277f9..900f7de05a 100755
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -200,6 +200,26 @@ test_expect_success '--amend --edit of empty message' '
test_cmp expect msg
'
+test_expect_success '--amend to set message to empty' '
+ echo bata >file &&
+ git add file &&
+ git commit -m "unamended" &&
+ git commit --amend --allow-empty-message -m "" &&
+ git diff-tree -s --format=%s HEAD >msg &&
+ echo "" >expect &&
+ test_cmp expect msg
+'
+
+test_expect_success '--amend to set empty message needs --allow-empty-message' '
+ echo conga >file &&
+ git add file &&
+ git commit -m "unamended" &&
+ test_must_fail git commit --amend -m "" &&
+ git diff-tree -s --format=%s HEAD >msg &&
+ echo "unamended" >expect &&
+ test_cmp expect msg
+'
+
test_expect_success '-m --edit' '
echo amended >expect &&
git commit --allow-empty -m buffer &&