environment: add global variable to disable replacement
This new "read_replace_refs" global variable is set to 1 by
default, so that replace refs are used by default. But
reachability traversal and packing commands ("cmd_fsck",
"cmd_prune", "cmd_pack_objects", "upload_pack",
"cmd_unpack_objects") set it to 0, as they must work with the
original DAG.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/replace_object.c b/replace_object.c
index b23e1cd..eb59604 100644
--- a/replace_object.c
+++ b/replace_object.c
@@ -94,6 +94,9 @@
int pos, depth = MAXREPLACEDEPTH;
const unsigned char *cur = sha1;
+ if (!read_replace_refs)
+ return sha1;
+
prepare_replace_object();
/* Try to recursively replace the object */
