gc: do not explode objects which will be immediately pruned

diff --git a/builtin/symbolic-ref.c b/builtin/symbolic-ref.c
index dea849c3c5ec0c0a7ee0ac98e1ae62a6dacf5806..801d62ece5d2ec84d027089c29fc58e279126ebb 100644 (file)
--- a/builtin/symbolic-ref.c
+++ b/builtin/symbolic-ref.c
@@ -8,13 +8,15 @@ static const char * const git_symbolic_ref_usage[] = {
        NULL
 };
 
+static int shorten;
+
 static void check_symref(const char *HEAD, int quiet)
 {
        unsigned char sha1[20];
        int flag;
-       const char *refs_heads_master = resolve_ref(HEAD, sha1, 0, &flag);
+       const char *refname = resolve_ref_unsafe(HEAD, sha1, 0, &flag);
 
-       if (!refs_heads_master)
+       if (!refname)
                die("No such ref: %s", HEAD);
        else if (!(flag & REF_ISSYMREF)) {
                if (!quiet)
@@ -22,7 +24,9 @@ static void check_symref(const char *HEAD, int quiet)
                else
                        exit(1);
        }
-       puts(refs_heads_master);
+       if (shorten)
+               refname = shorten_unambiguous_ref(refname, 0);
+       puts(refname);
 }
 
 int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
@@ -32,6 +36,7 @@ int cmd_symbolic_ref(int argc, const char **argv, const char *prefix)
        struct option options[] = {
                OPT__QUIET(&quiet,
                        "suppress error message for non-symbolic (detached) refs"),
+               OPT_BOOL(0, "short", &shorten, "shorten ref output"),
                OPT_STRING('m', NULL, &msg, "reason", "reason of the update"),
                OPT_END(),
        };