GNU bug report logs - #21869
Redisplay: after echo area diminishes in size, Follow Mode windows aren't resynchronised.

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Message #8 received at 21869 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Alan Mackenzie <acm <at> muc.de>, 21869 <at> debbugs.gnu.org, 
 Pip Cet <pipcet <at> gmail.com>
Subject: Re: bug#21869: Redisplay: after echo area diminishes in size, Follow
 Mode windows aren't resynchronised.
Date: Mon, 09 Nov 2015 11:04:16 +0100

> Follow Mode puts a function on window-scroll-functions which should be

I suppose you mean ‘window-size-change-functions’.

> called any time

Not really.

> a window changes size.  At the C-f above,
> window-size-change-functions is not being invoked.
>
> The one single place where window-size-change-functions is invoked is in
> the function prepare_menu_bars in xdisp.c.
>
> The one single place where prepare_menu_bars is called is fairly early on
> in redisplay_internal, at L+137.  This is before the echo area is resized
> at L+164.  Thus, the check on changed window sizes happens too early,
> before the change in the echo area size.

Probably bug#830 and bug#21333.

Pip are you still alive?  Have your papers arrived?

martin

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