Re: Tick Reduction

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Fri, 19 Nov 2021 11:28:52 +0100
> Cc: emacs-devel@gnu.org, dgutov@yandex.ru
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Here the font of variable-pitch face is actually larger by a pixel or
> > two, but this is MS-Windows.
> 
> I suspect that the fonts used are from two different font families, and
> thus have different x-heights.

Of course they are from different families, otherwise how can one be
fixed-pitch and the other variable-pitch.  It is rare for the same
family to provide both.

> Could you check which fonts are being used for both variable-pitch
> and fixed-pitch, and which font sizes are reported by Emacs when one
> looks larger than the other?

Both have the height of 13, according to "C-u C-x =".  And in a
debugger I see that both faces have the height attribute of 98 (in
units of 1/10 point).  So it sounds like Emacs thinks these have the
same height, and still the line height changes by about 1 pixel
depending on whether I do or don't use the variable-pitch face on that
line.  Maybe I'm missing something.