Allow to control where the replace refs are looked for

It can be useful to have grafts or replace refs for specific use-cases while
keeping the default "view" of the repository pristine (or with a different
set of grafts/replace refs).

It is possible to use a different graft file with GIT_GRAFT_FILE, but while
replace refs are more powerful, they don't have an equivalent override.

Add a GIT_REPLACE_REF_BASE environment variable to control where git is
going to look for replace refs.

Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/refs.c b/refs.c
index 8480d8dbf5..6fc65d239f 100644
--- a/refs.c
+++ b/refs.c
@@ -2106,7 +2106,8 @@ int for_each_remote_ref_submodule(const char *submodule, each_ref_fn fn, void *c
 
 int for_each_replace_ref(each_ref_fn fn, void *cb_data)
 {
-	return do_for_each_ref(&ref_cache, "refs/replace/", fn, 13, 0, cb_data);
+	return do_for_each_ref(&ref_cache, git_replace_ref_base, fn,
+			       strlen(git_replace_ref_base), 0, cb_data);
 }
 
 int head_ref_namespaced(each_ref_fn fn, void *cb_data)