F38 proposal: Noto Fonts For More Languages (System-Wide Change proposal)
https://fedoraproject.org/wiki/Changes/NotoFontsForMoreLang
This document represents a proposed Change. As part of the Changes
process, proposals are publicly announced in order to receive
community feedback. This proposal will only be implemented if approved
by the Fedora Engineering Steering Committee.
== Summary ==
Changes the default font for more languages to Noto Fonts.
== Owner ==
* Name: [[User:Tagoh| Akira TAGOH]]
* Email: <tagoh AT redhat DOT com>
== Detailed Description ==
We have changed our default fonts to Noto in
[[Changes/DefaultToNotoFonts|f36]] though, some languages was still
missing even though Noto Fonts provides fonts for their languages.
This Change continues to accomplish consistent text rendering across
our supported languages as far as possible.
The following languages are targeted in this Change:
* Khmer
* Thai
== Feedback ==
== Benefit to Fedora ==
We would get better text rendering on applications and desktops for
the above languages as well as languages we have already migrated.
Also this change should save about 344kB on the fresh install.
<pre>
$ rpm -qlv khmer-os-system-fonts thai-scalable-waree-fonts | awk
'BEGIN{a=0}{a+=$5}END{print a}'
504660</pre>
<pre>
$ rpm -qlv google-noto-sans-khmer-vf-fonts
google-noto-sans-thai-vf-fonts | awk 'BEGIN{a=0}{a+=$5}END{print a}'
160573</pre>
== Scope ==
* Proposal owners:
** Update google-noto-fonts and fonts packages currently used as
default, to change the priority of fontconfig config.
** Update langpacks to update dependencies
** Update comps to update default fonts sets
** Update lorax templates
* Other developers: Nothing
* Release engineering: [https://pagure.io/releng/issues #Releng issue number]
* Policies and guidelines: N/A (not needed for this Change)
* Trademark approval: N/A (not needed for this Change)
* Alignment with Objectives: Nothing
== Upgrade/compatibility impact ==
The migration will be done by updating langpacks. after upgrading and
rebooting, the default font will be Noto instead of `Khmer OS
System`/`Waree`.
Since this change aims to switch non-variable fonts to variable fonts,
it may not works with legacy applications as expected such as missing
some variants. in that case, you can install non-variable fonts
packages. the package name will be similar and simply drop -vf from
the variable fonts packages.
== How To Test ==
* This change can be simply tested by fc-match command like `fc-match
sans:lang=<your langauge>`, `fc-match serif:lang=<your language>` and
`fc-match monospace:lang=<your language>`. `:lang=km` for Khmer and
`:lang=th` for Thai.
* Test the text rendering in your favorite application, which use the
system default font.
== User Experience ==
Khmer/Thai Users will see the default font is changed to Noto by this change.
== Dependencies ==
Only khmer-os-system-fonts, thai-scalable-waree-fonts, langpacks, and
fontconfig are required to update. Other packages which explicitly has
a dependency to above fonts packages are basically optional to update.
== Contingency Plan ==
* Contingency mechanism: (What to do? Who will do it?) Revert the
relevant packages updated.
* Contingency deadline: Beta freeze
* Blocks release? No
== Documentation ==
None
== Release Notes ==
The default fonts for Khmer and Thai will be Google Noto Fonts to keep
consistency on the text rendering and to provide better quality among
languages.
--
Ben Cotton
He / Him / His
Fedora Program Manager
Red Hat
TZ=America/Indiana/Indianapolis