GNU bug report logs - #76084
31.0.50; Dragging tab line does not resize windows, unlike header line or mode line

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From: martin rudalics <rudalics <at> gmx.at>
To: Jared Finder <jared <at> finder.org>
Cc: 76084 <at> debbugs.gnu.org
Subject: bug#76084: 31.0.50; Dragging tab line does not resize windows, unlike header line or mode line
Date: Mon, 10 Feb 2025 11:15:34 +0100

> The code in xdisp.c that updates the mouse icon for dragging the mode
> line (search for "draggable") is straightforward to adjust to also
> handle the header and tab lines.  That works for almost all cases, I
> can confirm it works fine for Info mode, tab-line mode, and
> window-tool-bar mode.

Can you do that?

> It doesn't work for ruler-mode still because
> ruler-mode sets its own binding for <header-line> <down-mouse-1> in
> its keymap.
>
> To handle this I would need to add checks against the down-mouse-1
> keybinding before setting the mouse icon.  I'm just worried about
> performance here since looking up the keymap would get run on mouse
> motion.

I think there's no reason to bother about 'ruler-mode'.  IIRC, apart
from the scroll bar, the ruler has no "empty space" and dragging should
mostly happen in a horizontal fashion.

martin

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