Re: unable to map C-_ to undo in wsl ubuntu emacs

[Eli Zaretskii]

> From: Sivaram Neelakantan <nsivaram.net@gmail.com>
> Date: Sun, 12 Sep 2021 10:18:44 +0530
> User-Mail-Address: nsivaram.net@gmail.com
> 
> >> ^M       13 0015 0x0d
> >> ^M       13 0015 0x0d
> >> ^D        4 0004 0x04
> >
> > So that's a real problem with that terminal, please report it to the
> > appropriate issue tracker.  There's nothing Emacs can do about such a
> > strange remapping of keys, and rebinding RET to a different function
> > in Emacs will wreak havoc much worse than what you have now.
> >
> 
> This seems to happen if the keyboard is changed from US to
> IN(Indian).  If I switch to US Kb, it works as expected.  I've anyway
> raised a bug with the team.

Does that make sense when typing in IN languages?  (I don't speak and
don't read any of those.)  What is the significance of C-_ in those
languages that could justify this mapping?