Re: nxml-mode: Derive from prog-mode instead of text-mode

[Johan Bockgård]

Stefan Monnier <address@hidden> writes:

>> Since Emacs 24, Dired already essentially inherits from
>> `special-mode', without doing so explicitly.
>
> Indeed, that's because the `dired-mode` function currently can't just
> use define-derived-mode (because it takes a `dir` argument), and
> I kept the needed refactoring as a todo-item (one of those "todo after
> I retire from retirement").

One disadvantage (currently) of deriving from special-mode is that
define-derived-mode makes `foo-mode' an interactive command. This is
practically never appropriate for "special" modes.