[PATCH v2] push: respect --no-thin

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Over the time the default value for --thin has been switched between
on and off. As of now it's always on, even if --no-thin is given.
Correct the code to respect --no-thin.

receive-pack learns about --no-thin only for testing purposes, hence
no document update.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 v2 adds a test for push --no-thin. I figured out the problem in my
 test. I hit size filtering heuristics in pack-objects.c:try_delta().

 builtin/push.c         |  5 ++---
 builtin/receive-pack.c |  8 +++++++-
 t/t5516-fetch-push.sh  | 12 ++++++++++++
 3 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/builtin/push.c b/builtin/push.c
index 04f0eaf..333a1fb 100644
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -15,7 +15,7 @@ static const char * const push_usage[] = {
 	NULL,
 };
 
-static int thin;
+static int thin = 1;
 static int deleterefs;
 static const char *receivepack;
 static int verbosity;
@@ -313,8 +313,7 @@ static int push_with_options(struct transport *transport, int flags)
 	if (receivepack)
 		transport_set_option(transport,
 				     TRANS_OPT_RECEIVEPACK, receivepack);
-	if (thin)
-		transport_set_option(transport, TRANS_OPT_THIN, "yes");
+	transport_set_option(transport, TRANS_OPT_THIN, thin ? "yes" : NULL);
 
 	if (verbosity > 0)
 		fprintf(stderr, _("Pushing to %s\n"), transport->url);
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e3eb5fc..da60817 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -38,6 +38,7 @@ static int quiet;
 static int prefer_ofs_delta = 1;
 static int auto_update_server_info;
 static int auto_gc = 1;
+static int fix_thin = 1;
 static const char *head_name;
 static void *head_name_to_free;
 static int sent_capabilities;
@@ -869,7 +870,8 @@ static const char *unpack(int err_fd)
 		keeper[i++] = "--stdin";
 		if (fsck_objects)
 			keeper[i++] = "--strict";
-		keeper[i++] = "--fix-thin";
+		if (fix_thin)
+			keeper[i++] = "--fix-thin";
 		keeper[i++] = hdr_arg;
 		keeper[i++] = keep_arg;
 		keeper[i++] = NULL;
@@ -975,6 +977,10 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
 				stateless_rpc = 1;
 				continue;
 			}
+			if (!strcmp(arg, "--no-thin")) {
+				fix_thin = 0;
+				continue;
+			}
 
 			usage(receive_pack_usage);
 		}
diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index 4691d51..e80247b 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -1172,4 +1172,16 @@ test_expect_success 'push --follow-tag only pushes relevant tags' '
 	test_cmp expect actual
 '
 
+test_expect_success 'push --no-thin must produce non-thin pack' '
+	for i in `seq 100`; do echo modified >> path1; done &&
+	git commit -am "path1 big enough to pass size heuristics in try_delta" &&
+	git init no-thin &&
+	git --git-dir=no-thin/.git config receive.unpacklimit 0 &&
+	git push no-thin/.git refs/heads/master:refs/heads/foo &&
+	echo modified >> path1 &&
+	git commit -am modified &&
+	git repack -adf &&
+	git push --no-thin --receive-pack="git receive-pack --no-thin" no-thin/.git refs/heads/master:refs/heads/foo
+'
+
 test_done
-- 
1.8.2.83.gc99314b