rework to make empty pattern matching match historic vi practice
tree7b7edaf30293e0e3c88c78946748fd25a2099bfc
-rw-r--r-- 7092 README
drwxr-xr-x - common
drwxr-xr-x - docs
drwxr-xr-x - ex
drwxr-xr-x - vi