Libify diff-index.

The second installment to libify diff brothers.  The pathname
arguments are checked more strictly than before because we now
use the revision.c::setup_revisions() infrastructure.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/diff.h b/diff.h
index da4bd421fe..837d449f81 100644
--- a/diff.h
+++ b/diff.h
@@ -171,4 +171,6 @@ extern const char *diff_unique_abbrev(const unsigned char *, int);
 
 extern int run_diff_files(struct rev_info *revs, int silent_on_removed);
 
+extern int run_diff_index(struct rev_info *revs, int cached, int match_missing);
+
 #endif /* DIFF_H */