Re: xterm.el

[Richard Stallman]

    (info "(elisp)Ctl-Char Syntax")

        For historical reasons, Emacs treats the <DEL> character as the
        control equivalent of `?':

             ?\^? => 127     ?\C-? => 127

        As a result, it is currently not possible to represent the character
        `Control-?', which is a meaningful input character under X, using
        `\C-'.  It is not easy to change this, as various Lisp files refer to
        <DEL> in this way.

Let's add a comment at those places referring to this.

Would someone please install this change?