GNU bug report logs - #28839
25.3; ERC: Error in post-command-hook (erc-scroll-to-bottom): (error "‘recenter’ing a window that does not display current-buffer.")

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Ivan Kanis <ivan <at> kanis.fr>
Cc: 28839 <at> debbugs.gnu.org, 11697 <at> debbugs.gnu.org, Josh <josh <at> foxtail.org>, 16697 <at> debbugs.gnu.org, Glenn Morris <rgm <at> gnu.org>
Subject: bug#28839: bug#11697: bug#16697: 24.3.50; ERC scrolltobottom module does not work anymore
Date: Wed, 23 Oct 2019 11:57:44 +0200

Ivan Kanis <ivan <at> kanis.fr> writes:

> emacs -Q
>
> 1) evaluate (setq erc-modules '(scrolltobottom))
> 2) M-x erc
> 3) select default values
> 4) /j #emacs
> 5) wait for the buffer to fill up
>
> I expect the prompt line to stay at the bottom.
>
> It jumps back to the middle.

This was a bit convoluted to fix, as none of the hooks erc had could be
used, as they're called while saving too many excursions.  (Well, I
could have rewritten the erc-scroll-to-bottom function to not use
`recenter' at all, which may have been a better idea, come to think of
it.)

But I fixed it a different way, so that now point is kept at the end of
the buffer (if the window is selected).

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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