aboutsummaryrefslogtreecommitdiff
path: root/sha1_name.c
diff options
context:
space:
mode:
Diffstat (limited to 'sha1_name.c')
-rw-r--r--sha1_name.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/sha1_name.c b/sha1_name.c
index 8920de1c4..f64755fbc 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -91,14 +91,23 @@ static int find_short_packed_object(int len, const unsigned char *match, unsigne
last = mid;
}
if (first < num) {
- unsigned char now[20];
+ unsigned char now[20], next[20];
nth_packed_object_sha1(p, first, now);
if (match_sha(len, match, now)) {
- if (!found) {
- memcpy(found_sha1, now, 20);
- found++;
+ if (nth_packed_object_sha1(p, first+1, next) ||
+ !match_sha(len, match, next)) {
+ /* unique within this pack */
+ if (!found) {
+ memcpy(found_sha1, now, 20);
+ found++;
+ }
+ else if (memcmp(found_sha1, now, 20)) {
+ found = 2;
+ break;
+ }
}
- else if (memcmp(found_sha1, now, 20)) {
+ else {
+ /* not even unique within this pack */
found = 2;
break;
}
@@ -121,7 +130,7 @@ static int find_unique_short_object(int len, char *canonical,
if (!has_unpacked && !has_packed)
return -1;
if (1 < has_unpacked || 1 < has_packed)
- return -1;
+ return error("short SHA1 %.*s is ambiguous.", len, canonical);
if (has_unpacked != has_packed) {
memcpy(sha1, (has_packed ? packed_sha1 : unpacked_sha1), 20);
return 0;