- "${USER_NAME}:write") return 0;;
- "${USER_NAME}:") return 1;;
- "+{$USER_NAME}:write") return 0;;
- "-{$USER_NAME}:write") return 1;;
+ "@${USER_NAME}:write") return 0;;
+ "@${USER_NAME}:") return 1;;
+ "+@{$USER_NAME}:write") return 0;;
+ "-@{$USER_NAME}:write") return 1;;