Add --temp and --stage=all options to checkout-index.

Sometimes it is convient for a Porcelain to be able to checkout all
unmerged files in all stages so that an external merge tool can be
executed by the Porcelain or the end-user.  Using git-unpack-file
on each stage individually incurs a rather high penalty due to the
need to fork for each file version obtained.  git-checkout-index -a
--stage=all will now do the same thing, but faster.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/apply.c b/apply.c
index c369966867..849a8b4485 100644
--- a/apply.c
+++ b/apply.c
@@ -1402,7 +1402,8 @@ static int check_patch(struct patch *patch)
 				costate.not_new = 0;
 				costate.refresh_cache = 1;
 				if (checkout_entry(active_cache[pos],
-						   &costate) ||
+						   &costate,
+						   NULL) ||
 				    lstat(old_name, &st))
 					return -1;
 			}