ignore new git-diff index header when computing patch ids

Kai Ruemmler · Junio C Hamano · commit 9fabdedc0edd · 2005-10-09T16:52:50.000-07:00
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 &lt;kai.ruemmler@gmx.net&gt;
Signed-off-by: Junio C Hamano &lt;junkio@cox.net&gt;
diff --git 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;
