bug#53617: 28.0.90; duplicate checks in erc--switch-to-buffer

[Eli Zaretskii]

> From: Michael Olson <mwolson@gnu.org>
> Date: Sun, 30 Jan 2022 22:22:05 -0500
> Cc: "J.P." <jp@neverwas.me>, strings.stringsandstrings@gmail.com, 
>       Eli Zaretskii <eliz@gnu.org>, emacs-erc@gnu.org, bandali@gnu.org, 
> 53617@debbugs.gnu.org
> 
> What I'd sometimes do 10+ years ago is keep an AUTHORS file with a list of 
> who contributed, which files,
> and (in the case of unassigned contributors) how many lines so I knew if they 
> were getting close to the limit.
> I'm not sure if that would map well to the Emacs repo, maybe a side file like 
> ERC-AUTHORS, or just kept
> outside of the repo.

This is very tedious, and moreover, ephemeral: the threshold of a
dozen or so non-trivial lines is crossed only once and usually very
quickly; once it is crossed, it can never be crossed back (well,
except in the rare case that a person changes employers and is again
without an assignment).  So this kind of bookkeeping requires a lot of
clerical  work for little or no gain.