Thanks a lot for the patch, feel free to let me know which version I could
build and test.

On Mon, Sep 1, 2025 at 6:06 PM Eli Zaretskii <eliz@gnu.org> wrote:

> > Date: Mon, 1 Sep 2025 10:37:32 +0200
> > Cc: pitometsu@gmail.com, 79351@debbugs.gnu.org
> > From: martin rudalics <rudalics@gmx.at>
> >
> >  > That was because of performance issues, right?  I see nothing in that
> >  > discussion that objects to the character-level dragging in principle.
> >  >
> >  > I see no reason not to allow that as an option.  Patches welcome.
> >
> > I attach a patch supposed to fix your earlier
> >
> >   According to the manual, window-resize-pixelwise = nil is what you
> >   want.  However, it currently doesn't affect dragging the window border
> >   with the mouse, AFAIU.  Martin, am I right?  This could be a simple
> >   omission.
> >
> > But it's still sluggish as back in 2014, the mouse cursor moves far
> > ahead of the lines to drag and it refuses to move a mode line with
> > 'mouse-fine-grained-tracking' non-nil.  Likely remember_mouse_glyph
> > interferes here.
>
> Thanks.  I hope Yurii will be able to try the patch and see if it
> satisfies him.
>