[PATCH 5/5] builtin-prune: protect objects listed on the command line

[Junio C Hamano <junio@pobox.com>]

From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 24 Mar 2008 23:20:51 -0700

Finally, this resurrects the documented behaviour to protect other
objects listed on the command line from getting pruned.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 * This is done deliberately differently from what you did.  Because we do
   not want to accept "we allow losing what's reachable from master" with
   "git prune master..next", setup_revisions() is not the right thing to
   use for this command.

 builtin-prune.c  |   12 ++++++++++--
 t/t5304-prune.sh |    2 +-
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/builtin-prune.c b/builtin-prune.c
index 71caac5..ca50cca 100644
--- a/builtin-prune.c
+++ b/builtin-prune.c
@@ -140,8 +140,16 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
 	init_revisions(&revs, prefix);
 
 	argc = parse_options(argc, argv, options, prune_usage, 0);
-	if (argc)
-		die ("unrecognized argument: %s", name);
+	while (argc--) {
+		struct object *object;
+		unsigned char sha1[20];
+		const char *name = *argv++;
+
+		if (!get_sha1(name, sha1) && (object = parse_object(sha1)))
+			add_pending_object(&revs, object, "");
+		else
+			die ("unrecognized argument: %s", name);
+	}
 	mark_reachable_objects(&revs, 1);
 	prune_object_dir(get_object_directory());
 
diff --git a/t/t5304-prune.sh b/t/t5304-prune.sh
index 3d81e1f..9fd9d07 100644
--- a/t/t5304-prune.sh
+++ b/t/t5304-prune.sh
@@ -100,7 +100,7 @@ test_expect_success 'prune: prune unreachable heads' '
 
 '
 
-test_expect_failure 'prune: do not prune heads listed as an argument' '
+test_expect_success 'prune: do not prune heads listed as an argument' '
 
 	: > file2 &&
 	git add file2 &&
-- 
1.5.5.rc1.121.g1594