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From: Sebastian Miele <sebastian.miele@gmail.com>
To: 42240@debbugs.gnu.org
Subject: bug#42240: Interpretation of 'size' Property in Fontconfig Pattern Strings
Date: Tue, 07 Jul 2020 13:25:15 +0200	[thread overview]
Message-ID: <87pn97r2hw.fsf@gmail.com> (raw)

GNU Emacs 27.0.91 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.20)
of 2020-06-28

According to 'man 5 fonts-conf' the Fontconfig property 'size' is a
double and represents the point size. The property 'pixelsize', too, is
a double and represents the pixel size.

In

  FC_DEBUG=1 emacs -Q --font=:family=Hack:size=11

the 'size=11' is interpreted as 'pixelsize=11'.

  fc-match :family=Hack:size=11 size pixelsize

does interpret it as point size.

Apart from that both

  emacs -Q --font=:family=Hack:size=11.1

and

  emacs -Q --font=:family=Hack:pixelsize=11.1

both yield the same error: "invalid font property: (:size . 11\.1)",
although according to fontconfig the pixel size is a double, too.
However, fractional pixel sizes may not make sense for Emacs at all. I
do not know.

The following does work as expected:

  emacs -Q --font=Hack-11.1





             reply	other threads:[~2020-07-07 11:25 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-07 11:25 Sebastian Miele [this message]
2020-07-16 15:03 ` bug#42240: Interpretation of 'size' Property in Fontconfig Pattern Strings Robert Pluim
2020-07-16 15:56   ` Sebastian Miele
2020-07-16 16:07     ` Sebastian Miele
2020-07-16 17:03       ` Robert Pluim
2020-07-16 18:10         ` Sebastian Miele
2020-07-16 18:11       ` Sebastian Miele

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