Re: M-RET ok, C-RET wrong?

[Kepa via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

> From:     Eli Zaretskii
> Subject:     Re: M-RET ok, C-RET wrong?
> Date:     Sat, 24 Aug 2024 12:30:13 +0300
>
> > From: Arash Esbati <arash@gnu.org>
> > Cc: help-gnu-emacs@gnu.org
> > Date: Sat, 24 Aug 2024 09:56:57 +0200
> >
> > Eli Zaretskii <eliz@gnu.org> writes:
> >
> > >> From: Arash Esbati <arash@gnu.org>
> > >> Date: Sat, 24 Aug 2024 09:16:04 +0200
> > >>
> > >> Eli Zaretskii <eliz@gnu.org> writes:
> > >>
> > >> > I think that's because RET is actually C-m, and you cannot have two
> > >> > Ctrl modifiers on the same key.
> > >>
> > >> (key-valid-p "C-RET") => t
> > >
> > > Ha!
> > >
> > >> @Kepa: What do you get with:
> > >>
> > >> (keymap-set dired-mode-map "C-RET" 'dired-w32explore)
> > >
> > > I'm not Kepa, but I get the same result.  Although I actually tried
> > >
> > >    (keymap-set global-map "C-RET" 'dired)
> >
> > I can confirm this with your recipe as well.  So this is a deficiency in
> > `key-valid-p'?
>
> I guess so.  Patches welcome to fix that.

A couple of additional details, in case they are helpful:

1. Keyboards usually have two RET keys: one near the letters and one on 
the numpad. I receive two different messages when using each of them:

     C-<return> is undefined (letters)
     C-<enter> is undefined (numpad)

2. C-RET works in org-mode, where the following keybinding exists (I 
believe by default):
     Key Bindings: org-mode-map C-<return>

Best regards!