https://bugzilla.redhat.com/show_bug.cgi?id=2262410
--- Comment #31 from Oleg Oshmyan <chor...@inbox.lv> --- > they are assigned to the same codepoint but have different shape with GSUB. > fontconfig doesn't get involved with the rendering thing at all. it is out of > the scope. No, I mean fonts that are designed to support a single language. A font _can_ provide good support for everything at once via GSUB, but such global support isn't all that common and more often you find that you have e.g. a Japanese font, a mainland Chinese font and a Hong Kong Chinese font with near-identical glyph coverage but different shapes. My impression has been that this is (at least part of) why fonts.conf allows specifying what languages a font should be preferred for. Indeed, Noto Sans itself is a counterexample. I don't understand why it isn't all a single font, but it isn't: instead, we have a myriad of language-specific fonts with distinct names. > However, given that X is key codepoint to represent lang L, it can be > simplified because: > > a. font A is missing a glyph X so it doesn't satisfy lang L. > b. font B has full overage for M so it satisfies lang L. > c. font B will be picked up if requesting lang L. This might be useful when a lang L is requested, but again, the case here doesn't request any particular language at all. All we know is that we need "the `sans-serif` font". We could explicitly fetch the current system locale in libass and ask Fontconfig to look for this language, but I guess we kinda expected that Fontconfig already does this for substitutions/aliases on its own. > I don't know what is it for? Honestly, neither do I. We'll need to investigate. But that's why it scares me: given that someone put it in place to begin with, it seems likely that it does _something_. -- You are receiving this mail because: You are on the CC list for the bug. https://bugzilla.redhat.com/show_bug.cgi?id=2262410 Report this comment as SPAM: https://bugzilla.redhat.com/enter_bug.cgi?product=Bugzilla&format=report-spam&short_desc=Report%20of%20Bug%202262410%23c31 -- _______________________________________________ fonts-bugs mailing list -- fonts-bugs@lists.fedoraproject.org To unsubscribe send an email to fonts-bugs-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/fonts-bugs@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
