bug#14627: 24.2; Vertical frame size shrinking

[Stephen Berman]

On Thu, 22 Aug 2013 13:32:30 +0200 Stephen Berman <stephen.berman@gmx.net> 
wrote:

> On Mon, 19 Aug 2013 20:56:14 +0200 Jan Djärv <jan.h.d@swipnet.se> wrote:
>
>> Hello.
>>
>> 15 jun 2013 kl. 16:22 skrev Karl Brodowsky <bk1@gmx.net>:
>>
>>> 
>>> What I do:
>>> start emacs
>>> maximize the window
>>> split with C-x 3
>>> open a directory with C-x C-f /tmp
>>> click on left and right half of emacs
>>> The height of my emacs frame shrinks a little bit every time I do so, so
>>> I am loosing about one line of text when clicking to the left half and
>>> back to the right half.
>>
>> I can't reproduce this on OpenSuse 12.3, with 24.2 or the trunk.
>> What dont do you use, and what is your screen size?
>> You did not mention what window manager you run, I used kwin. 
>
> I don't see the shrinking with the OP's recipe, but I do see it if,
> instead of `C-x C-f /tmp RET', I do `C-h i' to open Info: switching
> between the Info and scratch windows shrinks the maximized frame
> vertically.
>
> In GNU Emacs 24.3.50.3 (x86_64-suse-linux-gnu, GTK+ Version 3.4.4)
>  of 2013-08-07 on rosalinde
> Bzr revision: 113738 eliz@gnu.org-20130807151423-mhw4d72032gg0eho
> Windowing system distributor `The X.Org Foundation', version 11.0.11203000
> System Description:   openSUSE 12.2 (x86_64)
>
> Qt: 4.8.4
> KDE Development Platform: 4.9.5 "release 4"
> KWin: 4.9.5 "release 4"
>
> Configured using:
>  `configure --without-toolkit-scroll-bars CFLAGS=-g3 -O0'
>
> Important settings:
>   value of $LANG: en_US.UTF-8
>   value of $XMODIFIERS: @im=local
>   locale-coding-system: utf-8-unix
>   default enable-multibyte-characters: t
>
> Steve Berman
> (I may not be able to follow up for a week or so.)

One quick followup: the shrinking happens with (at least) this font:

xft:-unknown-DejaVu Sans Mono-normal-normal-normal-*-15-*-*-*-m-0-iso10646-1