ignore new git-diff index header when computing patch ids

Two else equal patches should not result in different checksums, only
because they were applied to different versions of the file.

Signed-off-by:  Kai Ruemmler <kai.ruemmler@gmx.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/patch-id.c b/patch-id.c
index 5a8dc75..960e7ce 100644 (file)
--- a/patch-id.c
+++ b/patch-id.c
@@ -55,6 +55,10 @@ static void generate_id_list(void)
                if (!patchlen && memcmp(line, "diff ", 5))
                        continue;
 
+               /* Ignore git-diff index header */
+               if (!memcmp(line, "index ", 6))
+                       continue;
+
                /* Ignore line numbers when computing the SHA1 of the patch */
                if (!memcmp(line, "@@ -", 4))
                        continue;