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remote set-head: better output for --auto

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Currently, set-head --auto will print a message saying "remote/HEAD set
to branch", which implies something was changed.

Change the output of --auto, so the output actually reflects what was
done: a) set a previously unset HEAD, b) change HEAD because remote
changed or c) no updates. As edge cases, if HEAD is changed from
a previous symbolic reference that was not a remote branch, explicitly
call attention to this fact, and also notify the user if the previous
reference was not a symbolic reference.

Signed-off-by: Bence Ferdinandy <bence@ferdinandy.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Bence Ferdinandy
2024-11-22 13:28:47 +01:00
committed by Junio C Hamano
parent 4f07c45e25
commit dfe86fa06b
2 changed files with 109 additions and 13 deletions
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59
builtin/remote.c
View File

@ -1399,10 +1399,38 @@ static int show(int argc, const char **argv, const char *prefix)
return result;
}
static void report_set_head_auto(const char *remote, const char *head_name,
struct strbuf *b_local_head, int was_detached) {
struct strbuf buf_prefix = STRBUF_INIT;
const char *prev_head = NULL;
strbuf_addf(&buf_prefix, "refs/remotes/%s/", remote);
skip_prefix(b_local_head->buf, buf_prefix.buf, &prev_head);
if (prev_head && !strcmp(prev_head, head_name))
printf(_("'%s/HEAD' is unchanged and points to '%s'\n"),
remote, head_name);
else if (prev_head)
printf(_("'%s/HEAD' has changed from '%s' and now points to '%s'\n"),
remote, prev_head, head_name);
else if (!b_local_head->len)
printf(_("'%s/HEAD' is now created and points to '%s'\n"),
remote, head_name);
else if (was_detached && b_local_head->len)
printf(_("'%s/HEAD' was detached at '%s' and now points to '%s'\n"),
remote, b_local_head->buf, head_name);
else
printf(_("'%s/HEAD' used to point to '%s' "
"(which is not a remote branch), but now points to '%s'\n"),
remote, b_local_head->buf, head_name);
strbuf_release(&buf_prefix);
}
static int set_head(int argc, const char **argv, const char *prefix)
{
int i, opt_a = 0, opt_d = 0, result = 0;
struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT;
int i, opt_a = 0, opt_d = 0, result = 0, was_detached;
struct strbuf b_head = STRBUF_INIT, b_remote_head = STRBUF_INIT,
b_local_head = STRBUF_INIT;
char *head_name = NULL;
struct ref_store *refs = get_main_ref_store(the_repository);
@ -1440,20 +1468,27 @@ static int set_head(int argc, const char **argv, const char *prefix)
} else
usage_with_options(builtin_remote_sethead_usage, options);
if (head_name) {
strbuf_addf(&b_remote_head, "refs/remotes/%s/%s", argv[0], head_name);
/* make sure it's valid */
if (!refs_ref_exists(refs, b_remote_head.buf))
result |= error(_("Not a valid ref: %s"), b_remote_head.buf);
else if (refs_update_symref(refs, b_head.buf, b_remote_head.buf, "remote set-head"))
result |= error(_("Could not set up %s"), b_head.buf);
else if (opt_a)
printf("%s/HEAD set to %s\n", argv[0], head_name);
free(head_name);
if (!head_name)
goto cleanup;
strbuf_addf(&b_remote_head, "refs/remotes/%s/%s", argv[0], head_name);
if (!refs_ref_exists(refs, b_remote_head.buf)) {
result |= error(_("Not a valid ref: %s"), b_remote_head.buf);
goto cleanup;
}
was_detached = refs_update_symref_extended(refs, b_head.buf, b_remote_head.buf,
"remote set-head", &b_local_head);
if (was_detached == -1) {
result |= error(_("Could not set up %s"), b_head.buf);
goto cleanup;
}
if (opt_a)
report_set_head_auto(argv[0], head_name, &b_local_head, was_detached);
cleanup:
free(head_name);
strbuf_release(&b_head);
strbuf_release(&b_remote_head);
strbuf_release(&b_local_head);
return result;
}

63
t/t5505-remote.sh
View File

@ -444,12 +444,63 @@ test_expect_success REFFILES 'set-head --auto failure' '
)
'
test_expect_success 'set-head --auto detects creation' '
(
cd test &&
git update-ref --no-deref -d refs/remotes/origin/HEAD &&
git remote set-head --auto origin >output &&
echo "${SQ}origin/HEAD${SQ} is now created and points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
test_expect_success 'set-head --auto to update a non symbolic ref' '
(
cd test &&
git update-ref --no-deref -d refs/remotes/origin/HEAD &&
git update-ref refs/remotes/origin/HEAD HEAD &&
HEAD=$(git log --pretty="%H") &&
git remote set-head --auto origin >output &&
echo "${SQ}origin/HEAD${SQ} was detached at ${SQ}${HEAD}${SQ} and now points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
test_expect_success 'set-head --auto detects no change' '
(
cd test &&
git remote set-head --auto origin >output &&
echo "${SQ}origin/HEAD${SQ} is unchanged and points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
test_expect_success 'set-head --auto detects change' '
(
cd test &&
git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/ahead &&
git remote set-head --auto origin >output &&
echo "${SQ}origin/HEAD${SQ} has changed from ${SQ}ahead${SQ} and now points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
test_expect_success 'set-head --auto detects strange ref' '
(
cd test &&
git symbolic-ref refs/remotes/origin/HEAD refs/heads/main &&
git remote set-head --auto origin >output &&
echo "${SQ}origin/HEAD${SQ} used to point to ${SQ}refs/heads/main${SQ} (which is not a remote branch), but now points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
test_expect_success 'set-head --auto has no problem w/multiple HEADs' '
(
cd test &&
git fetch two "refs/heads/*:refs/remotes/two/*" &&
git remote set-head --auto two >output 2>&1 &&
echo "two/HEAD set to main" >expect &&
echo "${SQ}two/HEAD${SQ} is now created and points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
@ -468,6 +519,16 @@ test_expect_success 'set-head explicit' '
)
'
test_expect_success 'set-head --auto reports change' '
(
cd test &&
git remote set-head origin side2 &&
git remote set-head --auto origin >output 2>&1 &&
echo "${SQ}origin/HEAD${SQ} has changed from ${SQ}side2${SQ} and now points to ${SQ}main${SQ}" >expect &&
test_cmp expect output
)
'
cat >test/expect <<EOF
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