Calling git commit from shell-command results in incorrect log message

Question

I implemented the following to git commit after a file is saved. It works, I think, but the commit message, rather than being empty, is the literal value ''. This is the case whether or not I have any text in the quotes after the -m.

I expect my quoting is wrong - can someone confirm or deny please?

  (defun my-after-save-actions ()
    "Used in `after-save-hook'."
    (if (string-match-p (regexp-quote "Journal.org") (buffer-file-name))
        (shell-command "git add Journal.org && git commit --allow-empty-message -m ''")
    )
  )

  (add-hook 'after-save-hook 'my-after-save-actions)

Answer 1

Yes, appears to be a Windows thing. Simply replacing the -m '' with -m \"\" does the job. Could have sworn I tried that, but I guess not.