From 273b98343c5d743d89ee4d8a1556ca74dfddb786 Mon Sep 17 00:00:00 2001
From: Junio C Hamano <junkio@cox.net>
Date: Fri, 13 May 2005 18:40:14 -0700
Subject: [PATCH 1/3] Update mode-change strings in diff output.

This updates the mode change strings to be a bit more machine
friendly.  Although this might go against the spirit of
readability for human consumption, these mode bits strings are
shown only when unusual things (mode change, file creation and
deletion) happens, output normalized for machine consumption
would be permissible.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Petr Baudis <pasky@ucw.cz>

diff --git a/diff.c b/diff.c
index 3230997..26b53cc 100644
--- a/diff.c
+++ b/diff.c
@@ -83,6 +83,7 @@ static void builtin_diff(const char *name,
 			 struct diff_tempfile *temp)
 {
 	int i, next_at;
+	const char *git_prefix = "# mode: ";
 	const char *diff_cmd = "diff -L'%s%s' -L'%s%s'";
 	const char *diff_arg  = "'%s' '%s'||:"; /* "||:" is to return 0 */
 	const char *input_name_sq[2];
@@ -123,17 +124,18 @@ static void builtin_diff(const char *name,
 			    diff_arg, input_name_sq[0], input_name_sq[1]);
 
 	if (!path1[0][0])
-		printf("Created: %s (mode:%s)\n", name, temp[1].mode);
+		printf("%s. %s %s\n", git_prefix, temp[1].mode, name);
 	else if (!path1[1][0])
-		printf("Deleted: %s\n", name);
-	else if (strcmp(temp[0].mode, temp[1].mode)) {
-		printf("Mode changed: %s (%s->%s)\n", name,
-		       temp[0].mode, temp[1].mode);
-		/* Be careful.  We do not want to diff between
-		 * symlink and a file.
-		 */
-		if (strncmp(temp[0].mode, "120", 3) !=
-		    strncmp(temp[1].mode, "120", 3))
+		printf("%s%s . %s\n", git_prefix, temp[0].mode, name);
+	else {
+		if (strcmp(temp[0].mode, temp[1].mode))
+			printf("%s%s %s %s\n", git_prefix,
+			       temp[0].mode, temp[1].mode, name);
+
+		if (strncmp(temp[0].mode, temp[1].mode, 3))
+			/* we do not run diff between different kind
+			 * of objects.
+			 */
 			exit(0);
 	}
 	fflush(NULL);
-- 
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