[PATCH][RESEND] guilt: add option guilt.diffstat

[Wu Fengguang <fengguang.wu@intel.com>]

Introduce option guilt.diffstat so that we don't have to type
"guilt refresh --diffstat" in its full form every time.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---

Jeff: This patch is against the latest guilt v0.32-rc1.

 Documentation/guilt-refresh.txt |   10 ++++++++--
 guilt                           |    9 ++++++++-
 2 files changed, 16 insertions(+), 3 deletions(-)

--- guilt.orig/guilt
+++ guilt/guilt
@@ -646,7 +646,7 @@ __refresh_patch()
 
 		[ ! -z "$4" ] && diffopts="-C -M --find-copies-harder"
 		
-		if [ ! -z "$5" ]; then
+		if [ -n "$5" -o $diffstat = "true" ]; then
 			(
 				echo "---"
 				git diff --stat $diffopts "$2"
@@ -737,10 +737,17 @@ guilt_hook()
 # used for: git apply -C <val>
 guilt_push_diff_context=1
 
+# default diffstat value: true or false
+DIFFSTAT_DEFAULT="false"
+
 #
 # Parse any part of .git/config that belongs to us
 #
 
+# generate diffstat?
+diffstat=`git config --bool guilt.diffstat`
+[ -z "$diffstat" ] && diffstat=$DIFFSTAT_DEFAULT
+
 #
 # The following gets run every time this file is source'd
 #
--- guilt.orig/Documentation/guilt-refresh.txt
+++ guilt/Documentation/guilt-refresh.txt
@@ -20,8 +20,14 @@ OPTIONS
 	format (e.g., rename and copy detection).
 
 --diffstat::
-	Include a diffstat output in the patch file. Useful for cases where
-	patches will be submitted with other tools.
+Include a diffstat output in the patch file. Useful for cases where
+patches will be submitted with other tools.
++
+If the command line option is omitted, the corresponding git-config
+option "guilt.diffstat" will be queried. So this would enable diffstat
+output by default:
+
+	git config --global guilt.diffstat true
 
 Author
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