GNU bug report logs - #24193
25.1; `window-min-size' fails for horizontal width when margins >= body text

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Rankin <hello <at> paulwrankin.com>
Subject: bug#24193: closed (Re: bug#24193: 25.1; `window-min-size' fails
 for horizontal width when margins >= body text)
Date: Fri, 04 Sep 2020 13:42:02 +0000

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Your bug report

#24193: 25.1; `window-min-size' fails for horizontal width when margins >= body text

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 24193 <at> debbugs.gnu.org.

-- 
24193: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24193
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 24193-done <at> debbugs.gnu.org, rudalics <at> gmx.at, hello <at> paulwrankin.com
Subject: Re: bug#24193: 25.1; `window-min-size' fails for horizontal width
 when margins >= body text
Date: Fri, 04 Sep 2020 16:41:22 +0300

> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Cc: Eli Zaretskii <eliz <at> gnu.org>,  24193 <at> debbugs.gnu.org,  martin rudalics
>  <rudalics <at> gmx.at>
> Date: Fri, 04 Sep 2020 15:09:59 +0200
> 
> > Turns out there is a better solution, so the patch can be removed
> > before stable 25.1 release if you prefer :)
> 
> Skimming this thread, Martin's patch was applied (which seemed to fix
> the issue?), but then Paul said there's a better solution?  (But not
> what it was.)
> 
> So I'm not sure whether there's more to do here, or whether the bug
> report should be closed.  Anybody?

It should be closed; done.

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From: Paul Rankin <hello <at> paulwrankin.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1;
 `window-min-size' fails for horizontal width when margins >= body text
Date: Tue, 09 Aug 2016 19:14:27 +1000

There appears to be a change to `window-min-size' that gives an erroneously large minimum horizontal window size when the combined size of window margins exceed that of the body text, e.g. in a frame 80 columns wide, with left margin 20 columns and right margin 20 columns, would return a minimum horizontal size of 42, when body text would be 40. This causes `split-window-right' to fail.

To reproduce:

1. emacs -Q
2. in a frame 80 columns wide...
3. M-: (set-window-margins nil 20 20)
4. C-x 3
    => "Window #<window 1 on *scratch*> too small for splitting (2)"
5. M-: (window-min-size nil t)
    => 42

Expected results:

Window should split horizontally. Minimum window width should not be dictated by margin width.

Actual results:

Margin width dictates minimum window width and prevents window splitting.

Configuration:

GNU Emacs 25.1.1 (x86_64-apple-darwin15.6.0, NS appkit-1404.47 Version 10.11.6 (Build 15G31)) of 2016-08-09

MacBook Pro (Retina, 15-inch, Mid 2014)
2.2 GHz Intel Core i7
16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB

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