ido-read-file-name-as-directory-commands is a variable defined in `ido.el'.
Its value is
nil
This variable may be risky if used as a file-local variable.
Documentation:
List of commands which use `read-file-name' to read a directory name.
When `ido-everywhere' is non-nil, the commands in this list will read
the directory using `ido-read-directory-name'.
You can customize this variable.