bug#48201: bug(s) in underline-region

[Stefan Kangas]

"Basil L. Contovounesios" <contovob@tcd.ie> writes:

> Eli Zaretskii <eliz@gnu.org> writes:
>
>>> Date: Mon, 3 May 2021 13:27:53 -0400
>>> From: Boruch Baum <boruch_baum@gmx.com>
>>>
>>> The functions of package underline region doesn't check whether it's
>>> operations will work in the user's terminal or GUI environment. When I
>>> try using the feature in emacs-nox, it replaces the region with
>>> what is for that environment interleaved garbage in the form of "_\b".
>>
>> AFAIU, this package does that 100% intentionally.
>
> I believe so too: it's a kind of backspace overstriking referred to by
> termcap/nroff/ul.  A variation is often seen in the output of fortune.
>
> See e.g.:
> - https://www.emacswiki.org/emacs/UnterminalString
> - https://unix.stackexchange.com/q/274658/230197

Should this therefore be closed as notabug?