(comint-dynamic-complete-as-filename)

(comint-dynamic-complete-as-filename)
(comint-dynamic-list-filename-completions)
(comint-dynamic-simple-complete): Use `minibuffer-message'
to display message "No completions of %s" when a command
is called in the minibuffer.
(comint-dynamic-simple-complete): Don't display other
completion messages when a command is called in the minibuffer.
(comint-dynamic-list-completions): Use `minibuffer-message'
to display message " [Type space to flush ...]" when a command
is called in the minibuffer.