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upload-pack: fix ambiguous error message

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upload-pack.c takes any --shallow-exclude argument(s) from
clone/fetch/etc. and passes them through expand_ref().  If it does not
get back exactly one ref from the call to expand_ref(), it will die with
the following error:

    fatal: git upload-pack: ambiguous deepen-not: %s

Given that the documentation suggests to users that --shallow-exclude
accepts a revision rather than a ref (which will be corrected in a
subsequent commit), users may try to pass a revision.  In such a case,
expand_ref() will return 0 matches, but the error message we print will
be misleading since "ambiguous" suggests there are multiple matches.
Provide a clearer error message for such a case.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2024-11-04 19:02:43 +00:00
committed by Junio C Hamano
parent 8f8d6eee53
commit 5a875ff7fb
2 changed files with 12 additions and 1 deletions
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7
t/t5500-fetch-pack.sh
View File

@@ -926,6 +926,13 @@ test_expect_success 'fetch exclude tag one' '
test_cmp expected actual
'
test_expect_success 'fetch exclude tag one as revision' '
test_when_finished rm -f rev err &&
git -C shallow-exclude rev-parse one >rev &&
test_must_fail git -C shallow12 fetch --shallow-exclude $(cat rev) origin 2>err &&
grep "deepen-not is not a ref:" err
'
test_expect_success 'fetching deepen' '
test_create_repo shallow-deepen &&
(

6
upload-pack.c
View File

@@ -1025,10 +1025,14 @@ static int process_deepen_not(const char *line, struct oidset *deepen_not, int *
{
const char *arg;
if (skip_prefix(line, "deepen-not ", &arg)) {
int cnt;
char *ref = NULL;
struct object_id oid;
if (expand_ref(the_repository, arg, strlen(arg), &oid, &ref) != 1)
cnt = expand_ref(the_repository, arg, strlen(arg), &oid, &ref);
if (cnt > 1)
die("git upload-pack: ambiguous deepen-not: %s", line);
if (cnt < 1)
die("git upload-pack: deepen-not is not a ref: %s", line);
oidset_insert(deepen_not, &oid);
free(ref);
*deepen_rev_list = 1;