Merge branch 'nd/maint-branch-desc-doc'

Teach various forms of "format-patch" command line to identify what
branch the patches are taken from, so that the branch description
is picked up in more cases.

* nd/maint-branch-desc-doc:
  format-patch: pick up branch description when no ref is specified
  format-patch: pick up correct branch name from symbolic ref
  t4014: a few more tests on cover letter using branch description
  branch: delete branch description if it's empty
  config.txt: a few lines about branch.<name>.description
This commit is contained in:
Junio C Hamano
2013-01-09 08:27:09 -08:00
4 changed files with 72 additions and 14 deletions

View File

@ -1016,8 +1016,9 @@ static char *find_branch_name(struct rev_info *rev)
{
int i, positive = -1;
unsigned char branch_sha1[20];
struct strbuf buf = STRBUF_INIT;
const char *branch;
const unsigned char *tip_sha1;
const char *ref;
char *full_ref, *branch = NULL;
for (i = 0; i < rev->cmdline.nr; i++) {
if (rev->cmdline.rev[i].flags & UNINTERESTING)
@ -1027,18 +1028,27 @@ static char *find_branch_name(struct rev_info *rev)
else
return NULL;
}
if (positive < 0)
if (0 <= positive) {
ref = rev->cmdline.rev[positive].name;
tip_sha1 = rev->cmdline.rev[positive].item->sha1;
} else if (!rev->cmdline.nr && rev->pending.nr == 1 &&
!strcmp(rev->pending.objects[0].name, "HEAD")) {
/*
* No actual ref from command line, but "HEAD" from
* rev->def was added in setup_revisions()
* e.g. format-patch --cover-letter -12
*/
ref = "HEAD";
tip_sha1 = rev->pending.objects[0].item->sha1;
} else {
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;
}
if (dwim_ref(ref, strlen(ref), branch_sha1, &full_ref) &&
!prefixcmp(full_ref, "refs/heads/") &&
!hashcmp(tip_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)