From d6678c28e30e836449092a2917d4b0bd6254b06c Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso@mit.edu>
Date: Sun, 18 Mar 2007 22:30:10 -0400
Subject: [PATCH] mergetool: print an appropriate warning if merge.tool is
 unknown

Also add support for vimdiff

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---
 git-mergetool.sh | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/git-mergetool.sh b/git-mergetool.sh
index 563c5c048..7942fd0b6 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -288,10 +288,15 @@ done
 
 if test -z "$merge_tool"; then
     merge_tool=`git-config merge.tool`
-    if test $merge_tool = kdiff3 -o $merge_tool = tkdiff -o \
-	$merge_tool = xxdiff -o $merge_tool = meld ; then
-	unset merge_tool
-    fi
+    case "$merge_tool" in
+	kdiff3 | tkdiff | xxdiff | meld | emerge | vimdiff)
+	    ;; # happy
+	*)
+	    echo >&2 "git config option merge.tool set to unknown tool: $merge_tool"
+	    echo >&2 "Resetting to default..."
+	    unset merge_tool
+	    ;;
+    esac
 fi
 
 if test -z "$merge_tool" ; then
-- 
2.26.2