diff options
| -rw-r--r-- | refs.c | 18 | ||||
| -rw-r--r-- | remote.c | 13 | ||||
| -rwxr-xr-x | t/t5510-fetch.sh | 35 |
3 files changed, 58 insertions, 8 deletions
@@ -487,16 +487,24 @@ static const char *ref_rev_parse_rules[] = { NULL }; +#define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) + +/* + * Is it possible that the caller meant full_name with abbrev_name? + * If so return a non-zero value to signal "yes"; the magnitude of + * the returned value gives the precedence used for disambiguation. + * + * If abbrev_name cannot mean full_name, return 0. + */ int refname_match(const char *abbrev_name, const char *full_name) { const char **p; const int abbrev_name_len = strlen(abbrev_name); + const int num_rules = NUM_REV_PARSE_RULES; - for (p = ref_rev_parse_rules; *p; p++) { - if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) { - return 1; - } - } + for (p = ref_rev_parse_rules; *p; p++) + if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) + return &ref_rev_parse_rules[num_rules] - p; return 0; } @@ -1880,11 +1880,18 @@ static struct ref *get_expanded_map(const struct ref *remote_refs, static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name) { const struct ref *ref; + const struct ref *best_match = NULL; + int best_score = 0; + for (ref = refs; ref; ref = ref->next) { - if (refname_match(name, ref->name)) - return ref; + int score = refname_match(name, ref->name); + + if (best_score < score) { + best_match = ref; + best_score = score; + } } - return NULL; + return best_match; } struct ref *get_remote_ref(const struct ref *remote_refs, const char *name) diff --git a/t/t5510-fetch.sh b/t/t5510-fetch.sh index da9ac00557..858381a788 100755 --- a/t/t5510-fetch.sh +++ b/t/t5510-fetch.sh @@ -535,6 +535,41 @@ test_expect_success "should be able to fetch with duplicate refspecs" ' ) ' +test_expect_success 'LHS of refspec follows ref disambiguation rules' ' + mkdir lhs-ambiguous && + ( + cd lhs-ambiguous && + git init server && + test_commit -C server unwanted && + test_commit -C server wanted && + + git init client && + + # Check a name coming after "refs" alphabetically ... + git -C server update-ref refs/heads/s wanted && + git -C server update-ref refs/heads/refs/heads/s unwanted && + git -C client fetch ../server +refs/heads/s:refs/heads/checkthis && + git -C server rev-parse wanted >expect && + git -C client rev-parse checkthis >actual && + test_cmp expect actual && + + # ... and one before. + git -C server update-ref refs/heads/q wanted && + git -C server update-ref refs/heads/refs/heads/q unwanted && + git -C client fetch ../server +refs/heads/q:refs/heads/checkthis && + git -C server rev-parse wanted >expect && + git -C client rev-parse checkthis >actual && + test_cmp expect actual && + + # Tags are preferred over branches like refs/{heads,tags}/* + git -C server update-ref refs/tags/t wanted && + git -C server update-ref refs/heads/t unwanted && + git -C client fetch ../server +t:refs/heads/checkthis && + git -C server rev-parse wanted >expect && + git -C client rev-parse checkthis >actual + ) +' + # configured prune tests set_config_tristate () { |