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* default rules provided by fontconfig upstream, | * default rules provided by fontconfig upstream, | ||
* rules written by Fedora packagers using our own templates: install [[fontpackages|fontpackages-devel]] and look in ''/usr/share/fontconfig/templates/'', | * rules written by Fedora packagers using our own templates: install [[fontpackages|fontpackages-devel]] and look in ''/usr/share/fontconfig/templates/'', | ||
* rules written by Fedora packagers without regard for our templates, | * rules written by Fedora packagers without regard for our templates, | ||
* rules written by font projects.</ref> and mistakes are common<ref>While trying to: | * rules written by font projects.</ref> and mistakes are common<ref>While trying to: | ||
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* compare the output of: <pre>fc-match -s :family=<name>:lang=<loc></pre> in both cases, with ''<name>'' the font family you requested<ref>For example ''sans'', ''serif''…</ref> and ''<loc>'' the target locale<ref>For example ''ja-jp'', ''zh'', etc.</ref>. | * compare the output of: <pre>fc-match -s :family=<name>:lang=<loc></pre> in both cases, with ''<name>'' the font family you requested<ref>For example ''sans'', ''serif''…</ref> and ''<loc>'' the target locale<ref>For example ''ja-jp'', ''zh'', etc.</ref>. | ||
* if necessary, [[Identifying fonts|identify]] more precisely the problem font, | * if necessary, [[Identifying fonts|identify]] more precisely the problem font, | ||
* examine the fontconfig rules shipped with the problem package | * examine the fontconfig rules shipped with the problem package, | ||
# yum install fontpackages-devel meld | |||
$ meld foo.conf /usr/share/fontconfig/templates/bar.conf | |||
* [https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora report] your findings. | * [https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora report] your findings. | ||
Latest revision as of 10:01, 11 December 2009
Fontconfig has a modular design, allowing each font to contribute its own font substitution rules and workarounds, without requiring the maintenance of a large centralised static ruleset. However that also means a single package with broken rules can destabilise font priorities and make them less than awesome.
Our fontconfig rules have many origins[1] and mistakes are common[2]. To help identify and fix them:
- try to find a packageset that works and packageset that does not
- compare the output of:
fc-match -s :family=<name>:lang=<loc>
in both cases, with <name> the font family you requested[3] and <loc> the target locale[4]. - if necessary, identify more precisely the problem font,
- examine the fontconfig rules shipped with the problem package,
# yum install fontpackages-devel meld $ meld foo.conf /usr/share/fontconfig/templates/bar.conf
- report your findings.
Notes:
- ↑
- default rules provided by fontconfig upstream,
- rules written by Fedora packagers using our own templates: install fontpackages-devel and look in /usr/share/fontconfig/templates/,
- rules written by Fedora packagers without regard for our templates,
- rules written by font projects.
- ↑ While trying to:
- workaround KDE/QT fontconfig processing bugs,
- make sure one's font is the default for some languages,
- make sure one's font rendering preferences are default for one font,
- ↑ For example sans, serif…
- ↑ For example ja-jp, zh, etc.
Fonts in Fedora
The Fonts SIG takes loving care of Fedora fonts. Please join this special interest group if you are interested in creating, improving, packaging, or just suggesting a font. Any help will be appreciated.
The Fonts SIG takes loving care of Fedora fonts. Please join this special interest group if you are interested in creating, improving, packaging, or just suggesting a font. Any help will be appreciated.