RFR: 8190907: Windows 10 default Korean Font Malgun Gothic available not used by GUI elements even though available without Korean Language Pack [v3]

[Dmitry Batrak]

On Fri, 11 Mar 2022 17:53:12 GMT, Phil Race <prr at openjdk.org> wrote:

> Yes, the sequence.fallback but I am relaying my observation that adding
korean.allfonts=..
did not work even though sequence.fallback lists korean whereas adding
korean-foo.allfonts=..
and adding korean-foo into sequence.fallback DID work.

It's just there are (only) two ways to define Korean (or any other script) font to be used for fallback - either use only one of them for all 20 logical Java fonts (like e.g. it's currently done for Thai language), or configure a different Korean font for each of those 20 fonts separately (like it's currently done in OpenJDK for Korean language). It's not possible to 'mix' those two approaches - by using 'allfonts' entry as a kind of 'fallback' for the case when a specific font doesn't exist. When both ways (forms) are provided in the configuration file, current code picks the 'second' form, ignoring `allfonts` entry. That's why adding `allfonts.korean` in the patch didn't have any effect. But there are no existing entries like `serif.plain.korean-foo`, so adding `allfonts.korean-foo` does have an effect.

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PR: https://git.openjdk.java.net/jdk/pull/7643