From 5a0964b8bfd750dd118a1b10736ff9541b61b2fd Mon Sep 17 00:00:00 2001
From: "R. Steve McKown" <rsmckown@gmail.com>
Date: Sat, 10 Mar 2012 14:20:38 -0700
Subject: [PATCH] Improve git-diffall

Use the program listed in the git config variable diff.tool to present the
differences, else fall back to diff.
---
 git-diffall   | 10 +++++++++-
 git-diffall.1 |  7 ++++---
 2 files changed, 13 insertions(+), 4 deletions(-)
 mode change 100755 => 100644 git-diffall

diff --git a/git-diffall b/git-diffall
old mode 100755
new mode 100644
index dd8dd46..990d285
--- a/git-diffall
+++ b/git-diffall
@@ -1,5 +1,8 @@
 #!/bin/sh
+# Thanks to Thomas Rast
+# http://thread.gmane.org/gmane.comp.version-control.git/124807
 
+SUBDIRECTORY_OK=1
 . "$(git --exec-path)/git-sh-setup"
 cd_to_toplevel # for the tar below
 
@@ -35,4 +38,9 @@ done < "$tmp"/filelist
 cd "$tmp"
 #meld a b
 #diff -ur a b
-kdiff3 a b
+tool="$(git-config diff.tool)"
+if [ -n "$tool" ]; then
+  "$tool" a b
+else
+  diff -urN a b
+fi
diff --git a/git-diffall.1 b/git-diffall.1
index 48bca66..fa1d55c 100644
--- a/git-diffall.1
+++ b/git-diffall.1
@@ -11,9 +11,10 @@ git-diffall \- Use a visual diff tool to show all differences
 .PP
 \fBgit-diffall\fR performs a visual diff using kdiff3 between PRE and POST
 of the current project.  No arguments will show the differences between the
-working directory and HEAD.  Later this tool can be improved upon to use the
-tool listed in the config file (difftool), or if none present fall back to
-a 'normal' git diff.
+working directory and HEAD.  If in the git config diff.tool is set, this
+program is passed the name of the two temporary directories containing the
+changed files of each revision.  If diff.tool is not defined, the fall-back
+is to diff.
 
 Thanks to Thomas Rast for publishing this script online:
 http://thread.gmane.org/gmane.comp.version-control.git/124807
-- 
2.39.2