[PATCH] Open external merge tool with original file extensions in all three files

[Pini Reznik <pinir@expand.com>]

This required to be able to use syntax highlighting in meld during conflicts resolution.
Before this change, two merged versions of file with a conflict were open with temporal extensions .LOCAL.$$ and REMOTE.$$
This way they were not recognized as a code files.

Signed-off-by: Pini Reznik <pinir@expand.com>
---
 git-mergetool.sh |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/git-mergetool.sh b/git-mergetool.sh
index 5587c5e..4c15d22 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -152,10 +152,11 @@ merge_file () {
 	exit 1
     fi
 
-    BACKUP="$path.BACKUP.$$"
-    LOCAL="$path.LOCAL.$$"
-    REMOTE="$path.REMOTE.$$"
-    BASE="$path.BASE.$$"
+    extension=`echo $path | awk -F \. '{print $NF}'`
+    BACKUP="$path.BACKUP.$$.${extension}"
+    LOCAL="$path.LOCAL.$$.${extension}"
+    REMOTE="$path.REMOTE.$$.${extension}"
+    BASE="$path.BASE.$$.${extension}"
 
     mv -- "$path" "$BACKUP"
     cp -- "$BACKUP" "$path"
-- 
1.5.3.5