[Bug 1593196] Re: synthetic font generation causes confusion

[Hadmut Danisch]

I tried to fix the problem with a config file

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
<match target="scan">
	<test name="family" compare="eq" ignore-blanks="true">
		<string>Swis721 BdRnd BT</string>
	</test>
	<test name="style">
		<string>Bold</string>
	</test>
	<edit name="weight">
		<const>regular</const>
	</edit>
	<edit name="style">
		<const>regular</const>
	</edit>
</match>
</fontconfig>


fc-cache now complains about

Fontconfig warning: "/etc/fonts/conf.d/81-swiss.conf", line 16: saw
number, expected string


although there is no number. It fixes the problem for some programs (e.g. gnome-specimen), but not for all (e.g. not libreoffice, which gives the same warning as fc-cache, but does not dinstinguish the fonts).

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https://bugs.launchpad.net/bugs/1593196

Title:
  synthetic font generation causes confusion

Status in fontconfig package in Ubuntu:
  New

Bug description:
  Hi,

  the font configs just caused me lots of headache.

  I have a single TTF font (in this case Swiss 721 Bold Rounded BT),
  where the font foundry for some reason chose to call the subfamily
  name given in the TTF file 'Bold'. Which is confusing, since the font
  is not really that bold, but that's the way it is.

  
  Since this is just a single font and not a family, it causes fontconfig to generate synthetic fonts, i.e. it makes four out of one: The regular (unmodified), the bold, the italic, and the bold italic.

  That's where trouble begins. Since the original font is already named
  bold, there are suddenly two bold fonts, confusing all software that
  handles fonts by family and subfamily, e.g. libreoffice.

  
  1) It is in general not a good idea to generate synthetic fonts that cannot be distinguished from real font families. 

  2) It is a bad idea to generate synthatic fonts which have the same
  sub name as the original font.


  regards

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: fontconfig-config 2.11.94-0ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Jun 16 13:24:01 2016
  InstallationDate: Installed on 2016-04-22 (54 days ago)
  InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420)
  PackageArchitecture: all
  SourcePackage: fontconfig
  UpgradeStatus: No upgrade log present (probably fresh install)

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