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Re: Tick Reduction

From: Stefan Kangas
Subject: Re: Tick Reduction
Date: Fri, 19 Nov 2021 14:04:09 +0100

Eli Zaretskii <eliz@gnu.org> writes:

> 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.

On GNU/Linux, or at least on my machine, they are the same family in
"emacs -Q" (Bitstream Vera Sans / Bitstream Vera Sans Mono).

> 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.

Oh, I was so focussed on the x-height that I missed that you were discussing a
difference in the line height.

Do you observe this using the `C-h C-h' example?  If yes, could the
explanation be some difference in how the :box attribute we set in
`help-key-binding' works on MS-Windows vs. on GNU/Linux?  Just a guess.

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