GNU bug report logs - #78418
31.0.50; Change in fit-frame-to-buffer doesn't work with transient-posframe

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From: martin rudalics <rudalics <at> gmx.at>
To: Gerd Möllmann <gerd.moellmann <at> gmail.com>
Cc: yhaoxie <at> gmail.com, 78418 <at> debbugs.gnu.org
Subject: bug#78418: 31.0.50; Change in fit-frame-to-buffer doesn't work with transient-posframe
Date: Mon, 19 May 2025 15:45:55 +0200

>> When on macOS with 'frame-resize-pixelwise' nil you drag a frame border
>> with the mouse, does it resize by pixels or by character increments?
>
> I think it resizes to character bounds with frame-resize-pixelwise nil,
> and to pixels with it being t.

But did you try?  I see PResizeInc defined in nsgui.h but I nowhere see
it used.  Same goes for Wayland builds.  AFAICT size increments are only
recognized by X11.  Everywhere else they are a pure nuisance.

> For transient-posframe child frames, when f-r-p is nil. things go wrong
> because Posframe binds frame-resize-pixelwise to t, and transient uses
> the default nil when fit-frame-to-buffer is called. That's what I showed
> in the screen shot.

That's a different issue.  If 'frame-resize-pixelwise' is nil,
'fit-frame-to-buffer-1' does all that silly rounding which blows frames
up in your case.

martin

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