git-branch --contains=commit

diff --git a/git-mergetool.sh b/git-mergetool.sh
index 94511f9d1ace4e41bd225cd25643b17770b075b1..5587c5ecea0f6a97f2715636890c9e2f89845d52 100755 (executable)
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -10,6 +10,7 @@
 
 USAGE='[--tool=tool] [file to merge] ...'
 SUBDIRECTORY_OK=Yes
+OPTIONS_SPEC=
 . git-sh-setup
 require_work_tree
 prefix=$(git rev-parse --show-prefix)
@@ -334,7 +335,7 @@ init_merge_tool_path() {
 
 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