diff --git a/git-mergetool.sh b/git-mergetool.sh
index 94511f9d1ace4e41bd225cd25643b17770b075b1..a68b40386bde1c47c33a19514ec3a22db7fb0e4b 100755 (executable)
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
if test -z "$merge_tool"; then
merge_tool=`git config merge.tool`
- if ! valid_tool "$merge_tool"; then
+ if test -n "$merge_tool" && ! valid_tool "$merge_tool"; then
echo >&2 "git config option merge.tool set to unknown tool: $merge_tool"
echo >&2 "Resetting to default..."
unset merge_tool