How can I disable helm file completion for interactive shell command?

Question

I have turned on (helm-mode 1) and selectively turned it off for find-file for default emacs behavior, which I prefer. I would also like to restore non-helm behavior for file completion when invoking shell-command. E.g. if I do M-! ls ~/<tab> it currently shows the helm completion buffer. How can I use the default emacs file navigator for shell-command , while keeping helm globally?

Answer 1

Answering my own question, here is to create a wrapper to turn off helm-mode for a specific command:

(defun my-shell-command (&optional no-op)
  (interactive)
  (let ((completion-in-region-function 'completion--in-region))
    (call-interactively 'shell-command)))
  
(global-set-key "\M-!" 'my-shell-command)