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Diffstat (limited to 'builtin')
-rw-r--r--builtin/rev-parse.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index 01a62800e8..5da9537113 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -267,21 +267,20 @@ static int show_file(const char *arg, int output_prefix)
static int try_difference(const char *arg)
{
- char *dotdot;
+ const char *dotdot;
struct object_id start_oid;
struct object_id end_oid;
const char *end;
const char *start;
+ char *to_free;
int symmetric;
static const char head_by_default[] = "HEAD";
if (!(dotdot = strstr(arg, "..")))
return 0;
+ start = to_free = xmemdupz(arg, dotdot - arg);
end = dotdot + 2;
- start = arg;
symmetric = (*end == '.');
-
- *dotdot = 0;
end += symmetric;
if (!*end)
@@ -295,7 +294,7 @@ static int try_difference(const char *arg)
* Just ".."? That is not a range but the
* pathspec for the parent directory.
*/
- *dotdot = '.';
+ free(to_free);
return 0;
}
@@ -308,7 +307,7 @@ static int try_difference(const char *arg)
a = lookup_commit_reference(the_repository, &start_oid);
b = lookup_commit_reference(the_repository, &end_oid);
if (!a || !b) {
- *dotdot = '.';
+ free(to_free);
return 0;
}
if (repo_get_merge_bases(the_repository, a, b, &exclude) < 0)
@@ -318,10 +317,10 @@ static int try_difference(const char *arg)
show_rev(REVERSED, &commit->object.oid, NULL);
}
}
- *dotdot = '.';
+ free(to_free);
return 1;
}
- *dotdot = '.';
+ free(to_free);
return 0;
}