make ex_cmd have "cmd" be the string, and "exc" be the EXCMDARG struct
tree3a4614971c52d2eb7bb3edd18418a7dd515da239
-rw-r--r-- 7092 README
drwxr-xr-x - common
drwxr-xr-x - docs
drwxr-xr-x - ex
drwxr-xr-x - vi