format-patch: pick up correct branch name from symbolic ref
find_branch_name() assumes to take refs/heads/<branch>. But we also
have symbolic refs, such as HEAD, that can point to a valid branch in
refs/heads and do not follow refs/heads/<branch> syntax. Remove the
assumption and apply normal ref resolution. After all it would be
confusing if rev machinery resolves a ref in one way and
find_branch_name() another.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/log.c b/builtin/log.c
index dff7921..a293a3f 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1014,8 +1014,8 @@
{
int i, positive = -1;
unsigned char branch_sha1[20];
- struct strbuf buf = STRBUF_INIT;
- const char *branch;
+ const char *ref;
+ char *full_ref, *branch = NULL;
for (i = 0; i < rev->cmdline.nr; i++) {
if (rev->cmdline.rev[i].flags & UNINTERESTING)
@@ -1027,16 +1027,13 @@
}
if (positive < 0)
return NULL;
- strbuf_addf(&buf, "refs/heads/%s", rev->cmdline.rev[positive].name);
- branch = resolve_ref_unsafe(buf.buf, branch_sha1, 1, NULL);
- if (!branch ||
- prefixcmp(branch, "refs/heads/") ||
- hashcmp(rev->cmdline.rev[positive].item->sha1, branch_sha1))
- branch = NULL;
- strbuf_release(&buf);
- if (branch)
- return xstrdup(rev->cmdline.rev[positive].name);
- return NULL;
+ ref = rev->cmdline.rev[positive].name;
+ if (dwim_ref(ref, strlen(ref), branch_sha1, &full_ref) &&
+ !prefixcmp(full_ref, "refs/heads/") &&
+ !hashcmp(rev->cmdline.rev[positive].item->sha1, branch_sha1))
+ branch = xstrdup(full_ref + strlen("refs/heads/"));
+ free(full_ref);
+ return branch;
}
int cmd_format_patch(int argc, const char **argv, const char *prefix)
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index 4183f9a..7b536e0 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -912,4 +912,18 @@
grep hello actual >/dev/null
'
+test_expect_success 'cover letter using branch description (4)' '
+ git checkout rebuild-1 &&
+ test_config branch.rebuild-1.description hello &&
+ git format-patch --stdout --cover-letter master.. >actual &&
+ grep hello actual >/dev/null
+'
+
+test_expect_success 'cover letter using branch description (5)' '
+ git checkout rebuild-1 &&
+ test_config branch.rebuild-1.description hello &&
+ git format-patch --stdout --cover-letter -2 HEAD >actual &&
+ grep hello actual >/dev/null
+'
+
test_done
