Re: keymap.el and its checks

[Juri Linkov]

> I saw this change from Stefan:
> 570a11052b * keymap.el: Ease up support for non-`kbd` formats.
>
> and thought this would let me write
> (push repeat-exit-key unread-command-events)

BTW, repeat-exit-key could support `kbd` format as well after changing
its customization type to:

  :type '(choice (const :tag "No special key to exit repeating sequence" nil)
                 (string :tag "Kbd string that exits repeating sequence")
                 (key-sequence :tag "Key that exits repeating sequence"))

This assumes that `key-sequence` can't be a string.

After that you could use (key-parse repeat-exit-key) to append it
to unread-command-events.