fix

lua-ui/hook/post-merge

 #/usr/bin/env bash
 # git hook to run a command after `git pull` if a specified file was changed
 # Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`.
-
 changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"
 
 check_run() {
-	echo "$changed_files" | grep --quiet "$1" && eval "$2"
+	havefile=`echo "$changed_files" | grep  "$1"`
+	if [[ -n "${havefile}" ]];then
+		eval "$2"
+	fi
 }
 
 check_run package.json "npm install"