1 files changed, 3 insertions, 0 deletions
diff --git a/cache.h b/cache.h
index fcf49706ad..d21b19a402 100644
--- a/cache.h
+++ b/cache.h
@@ -634,6 +634,9 @@ char *prefix_path_gently(const char *prefix, int len, int *remaining, const char
  */
 char *prefix_filename(const char *prefix, const char *path);
 
+/* Likewise, but path=="-" always yields "-" */
+char *prefix_filename_except_for_dash(const char *prefix, const char *path);
+
 int check_filename(const char *prefix, const char *name);
 void verify_filename(const char *prefix,
 		     const char *name,