bug#28591: 27.0.50; xterm-set-window-title

[Mark Oteiza]

Katsumi Yamaoka <yamaoka@jpl.org> writes:

> The feature looks nice but I want the original title to come back
> when Emacs exits or suspends (even if it launches with -Q).

I posted a patch here
https://lists.gnu.org/archive/html/emacs-devel/2017-09/msg00728.html

but at the moment it's not clear to me how to handle other terminals
that use an xterm- family terminfo.