GNU bug report logs - #78999
31.0.50; [wishlist] window-divider-mode: option to show the bottom divider only when the mode line is hidden

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Dani Moncayo <dmoncayo <at> gmail.com>
Subject: bug#78999: closed (Re: bug#78999: 31.0.50; [wishlist]
 window-divider-mode: option to show the bottom divider only when the mode
 line is hidden)
Date: Sat, 19 Jul 2025 08:54:02 +0000

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Your bug report

#78999: 31.0.50; [wishlist] window-divider-mode: option to show the bottom divider only when the mode line is hidden

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 78999 <at> debbugs.gnu.org.

-- 
78999: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=78999
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Dani Moncayo <dmoncayo <at> gmail.com>
Cc: 78999-done <at> debbugs.gnu.org
Subject: Re: bug#78999: 31.0.50; [wishlist] window-divider-mode: option to
 show the bottom divider only when the mode line is hidden
Date: Sat, 19 Jul 2025 11:53:19 +0300

> From: Dani Moncayo <dmoncayo <at> gmail.com>
> Date: Sat, 12 Jul 2025 17:51:35 +0200
> Cc: 78999 <at> debbugs.gnu.org
> 
> Hi again.
> 
> On second thought, and to be honest, I think I would not use the
> feature I requested in this ticket.
> 
> I've changed my mind and I will _always_ show the window divider lines
> (right and bottom), regardless of whether a window/buffer shows its
> mode line or not.
> 
> FWIW, my reasons are that the divider lines:
>   a) Can always be useful to resize the windows with the mouse (even
> on windows with hidden mode lines).
>   b) Help with (visually) grouping together each mode line with the
> rest of the window it belongs to.
> 
> So, sorry for the noise.  I don't want to waste your time.
> 
> You can close this ticket if you don't see the need for this feature either.

Thanks, closing.

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From: Dani Moncayo <dmoncayo <at> gmail.com>
To: bug-gnu-emacs <bug-gnu-emacs <at> gnu.org>
Subject: 31.0.50; [wishlist] window-divider-mode: option to show the bottom
 divider only when the mode line is hidden
Date: Sat, 12 Jul 2025 12:13:36 +0200

Severity: wishlist.

With the current master branch, it's now easy to hide the mode line in
specific buffers/windows, with the new 'mode-line-invisible-mode'.

But then, in a multi-window layout with some windows stacked
vertically, it becomes important to have a window divider at the
bottom edge of each window, to visually distinguish them.  This can be
achieved with:
  (setq window-divider-default-places t)
  (window-divider-mode 1)

But that setup isn't entirely satisfactory to me, because I don't want
_every_ window to show a bottom divider; I'd like to have the bottom
divider _only_ in windows where the mode line is hidden.

In other words, I’d prefer _not_ to have a window displaying both its
mode line and bottom divider -- I don't need/want both of them.

So, would it be possible to add a feature to window-divider-mode
whereby a window's bottom divider is shown only when its mode-line is
hidden?

TIA.

-- 
Dani Moncayo


In GNU Emacs 31.0.50 (build 59, x86_64-pc-linux-gnu, GTK+ Version
 3.24.41, cairo version 1.18.0) of 2025-07-12 built on C11-Q8YAKWONJX0
Repository revision: f746762e74adeac8beaa73abcf20ee5e74298597
Repository branch: master
Windowing system distributor 'Microsoft Corporation', version 11.0.12010000
System Description: Ubuntu 24.04.2 LTS

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG
LIBSELINUX LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG SECCOMP SOUND
THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINERAMA
XINPUT2 XPM XRANDR GTK3 ZLIB

Important settings:
  value of $LANG: C.UTF-8
  locale-coding-system: utf-8-unix

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