Conditional loading of language/locale specific css and php files

[nukaga]

Description
In the current site design, the title is too large in Japanese and Chinese.
The center alignment is also extraordinary.

#118 (comment)
#118 (comment)

Solution
Is it possible to separate the title and body CSS in several languages?

[waviaei]

I think a possible neat and WordPress-like solution is, for example;

• If the site setting is ja, the theme will additionally look for and load ja.css on top of style.css.
• If the site setting is en_gb, the theme will look for en_gb, then en...

and so on . A conditional or auto-loading of language specific php would be nice too, because then we can dequeue the latin font, and replace with, e.g., ja font if only the site is ja.

I know that Justin Tadlock's Hybrid theme series has had this customization for a long time. I have contributed to his Stargazer theme's ja.css. Also as a bonus, this way, it makes easier for polyglot community to add contribute language specific files later its release.

https://github.com/justintadlock/stargazer

I believe in latest Hybrid core system, the relevant codes are around here:
https://themehybrid.com/docs/hybrid-core-i18n
https://github.com/justintadlock/hybrid-core/tree/master/src/Lang

Would this be feasible solution to adopt this into twentytwenty? (event better, the core?)
(of course, not adding the Hybrid-Core into twentytwenty but adopting some relevant codes)

[ianbelanger79]

Has been moved to trac https://core.trac.wordpress.org/ticket/48800