From 2245be3e7a5a2999ebf7d38e569c98994b0cda31 Mon Sep 17 00:00:00 2001
From: Junio C Hamano <junkio@cox.net>
Date: Sun, 19 Feb 2006 15:03:49 -0800
Subject: send-pack --thin: use "thin pack" delta transfer.

The new flag loosens the usual "self containedness" requirment
of packfiles, and sends deltified representation of objects when
we know the other side has the base objects needed to unpack
them.  This would help reducing the transfer size.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/send-pack.c b/send-pack.c
index 990be3f..ad22da5 100644
--- a/send-pack.c
+++ b/send-pack.c
@@ -12,6 +12,7 @@ static const char *exec = "git-receive-pack";
 static int verbose = 0;
 static int send_all = 0;
 static int force_update = 0;
+static int use_thin_pack = 0;
 
 static int is_zero_sha1(const unsigned char *sha1)
 {
@@ -41,7 +42,10 @@ static void exec_rev_list(struct ref *refs)
 	int i = 0;
 
 	args[i++] = "rev-list";	/* 0 */
-	args[i++] = "--objects";	/* 1 */
+	if (use_thin_pack)	/* 1 */
+		args[i++] = "--objects-edge";
+	else
+		args[i++] = "--objects";
 	while (refs) {
 		char *buf = malloc(100);
 		if (i > 900)
@@ -361,6 +365,10 @@ int main(int argc, char **argv)
 				verbose = 1;
 				continue;
 			}
+			if (!strcmp(arg, "--thin")) {
+				use_thin_pack = 1;
+				continue;
+			}
 			usage(send_pack_usage);
 		}
 		if (!dest) {
-- 
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