bug#32392: 26.1; wdired and derived dired modes

[Lars Ingebrigtsen]

James Nguyen <james@jojojames.com> writes:

> Digging into the function wdired-change-to-wdired-mode, that function
> throws an error if the current major mode is not 'dired-mode.
>
> (unless (eq major-mode 'dired-mode)
>   (error "Not a Dired buffer"))
>
> I think we can change the check to be:
>
> (unless (derived-mode-p 'dired-mode)
>   (error "Not a Dired buffer"))

Makes sense to me; I've now done this change on the Emacs trunk.

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