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-rw-r--r--builtin-branch.c4
-rw-r--r--builtin-for-each-ref.c2
-rw-r--r--refs.c18
-rw-r--r--refs.h2
4 files changed, 19 insertions, 7 deletions
diff --git a/builtin-branch.c b/builtin-branch.c
index 3275821..91098ca 100644
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -311,14 +311,14 @@ static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
if (branch && branch->merge && branch->merge[0]->dst &&
show_upstream_ref)
strbuf_addf(stat, "[%s] ",
- shorten_unambiguous_ref(branch->merge[0]->dst));
+ shorten_unambiguous_ref(branch->merge[0]->dst, 0));
return;
}
strbuf_addch(stat, '[');
if (show_upstream_ref)
strbuf_addf(stat, "%s: ",
- shorten_unambiguous_ref(branch->merge[0]->dst));
+ shorten_unambiguous_ref(branch->merge[0]->dst, 0));
if (!ours)
strbuf_addf(stat, "behind %d] ", theirs);
else if (!theirs)
diff --git a/builtin-for-each-ref.c b/builtin-for-each-ref.c
index c8114c8..cfff686 100644
--- a/builtin-for-each-ref.c
+++ b/builtin-for-each-ref.c
@@ -601,7 +601,7 @@ static void populate_value(struct refinfo *ref)
if (formatp) {
formatp++;
if (!strcmp(formatp, "short"))
- refname = shorten_unambiguous_ref(refname);
+ refname = shorten_unambiguous_ref(refname, 0);
else
die("unknown %.*s format %s",
(int)(formatp - name), name, formatp);
diff --git a/refs.c b/refs.c
index 82afb87..e65a3b4 100644
--- a/refs.c
+++ b/refs.c
@@ -1681,7 +1681,7 @@ static void gen_scanf_fmt(char *scanf_fmt, const char *rule)
return;
}
-char *shorten_unambiguous_ref(const char *ref)
+char *shorten_unambiguous_ref(const char *ref, int strict)
{
int i;
static char **scanf_fmts;
@@ -1718,6 +1718,7 @@ char *shorten_unambiguous_ref(const char *ref)
/* skip first rule, it will always match */
for (i = nr_rules - 1; i > 0 ; --i) {
int j;
+ int rules_to_fail = i;
int short_name_len;
if (1 != sscanf(ref, scanf_fmts[i], short_name))
@@ -1726,14 +1727,25 @@ char *shorten_unambiguous_ref(const char *ref)
short_name_len = strlen(short_name);
/*
+ * in strict mode, all (except the matched one) rules
+ * must fail to resolve to a valid non-ambiguous ref
+ */
+ if (strict)
+ rules_to_fail = nr_rules;
+
+ /*
* check if the short name resolves to a valid ref,
* but use only rules prior to the matched one
*/
- for (j = 0; j < i; j++) {
+ for (j = 0; j < rules_to_fail; j++) {
const char *rule = ref_rev_parse_rules[j];
unsigned char short_objectname[20];
char refname[PATH_MAX];
+ /* skip matched rule */
+ if (i == j)
+ continue;
+
/*
* the short name is ambiguous, if it resolves
* (with this previous rule) to a valid ref
@@ -1749,7 +1761,7 @@ char *shorten_unambiguous_ref(const char *ref)
* short name is non-ambiguous if all previous rules
* haven't resolved to a valid ref
*/
- if (j == i)
+ if (j == rules_to_fail)
return short_name;
}
diff --git a/refs.h b/refs.h
index 50abbbb..29d17a4 100644
--- a/refs.h
+++ b/refs.h
@@ -81,7 +81,7 @@ extern int for_each_reflog(each_ref_fn, void *);
extern int check_ref_format(const char *target);
extern const char *prettify_ref(const struct ref *ref);
-extern char *shorten_unambiguous_ref(const char *ref);
+extern char *shorten_unambiguous_ref(const char *ref, int strict);
/** rename ref, return 0 on success **/
extern int rename_ref(const char *oldref, const char *newref, const char *logmsg);