[StGIT PATCH 4/4] Port stg-whatchanged improvements to stg-mdiff and have the former use the latter.

[Yann Dirson <ydirson@altern.org>]

From: Yann Dirson <yann.dirson@sagem.com>

Signed-off-by: Yann Dirson <ydirson@altern.org>
---

 contrib/stg-mdiff       |    2 ++
 contrib/stg-whatchanged |   10 ++++------
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/contrib/stg-mdiff b/contrib/stg-mdiff
index 61cba9e..74d7f77 100755
--- a/contrib/stg-mdiff
+++ b/contrib/stg-mdiff
@@ -46,4 +46,6 @@ case "$2" in
 esac
 
 colordiff $diffopts \
+    -I '^index [0-9a-b]*..[0-9a-b]*' \
+    -I '^@@ .* @@' \
     <($cmd1 "$1") <($cmd2 "$2") | less -RFX
diff --git a/contrib/stg-whatchanged b/contrib/stg-whatchanged
index 231f4f5..afeda2c 100755
--- a/contrib/stg-whatchanged
+++ b/contrib/stg-whatchanged
@@ -25,11 +25,9 @@ fi
 # in this case (unlike, eg., "pick --fold")
 patchdir="$(git-rev-parse --git-dir)/patches/$(stg branch)/patches/$(stg top)"
 case $(stg log | head -n1) in
-    *push\(c\)*) current_cmd="stg show //top.old" ;;
-    *) current_cmd="stg show" ;;
+    *push\(c\)*) former="//top.old" ;;
+    *) former="//top" ;;
 esac
 
-colordiff "$@" \
-    -I '^index [0-9a-b]*..[0-9a-b]*' \
-    -I '^@@ .* @@' \
-    <($current_cmd) <(stg diff -r//bottom) | less -RFX
+stg-mdiff -o "$*" \
+    $former //bottom..