<i18n dev> RFR: 8301119: Support for GB18030-2022

Wed Feb 22 15:22:04 UTC 2023

On Fri, 10 Feb 2023 20:35:58 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Upgrading the GB18030 charset in the JDK to the latest 2022 standard. Since this is not a compatible upgrade to the existing mapping, a new system property `jdk.charset.GB18030` is introduced. If it is set to "2000", the mapping falls back to the existing mapping based on the 2000 standard, otherwise, it defaults to 2022 mapping. Refer to the corresponding CSR for more detail.

Overall I think it looks very good, just StandardCharsets.isGB18030_2000 needs attention. Having GB18030 be in java.base in all builds, rather than everywhere except macOS, is okay and makes things a lot simpler.

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PR: https://git.openjdk.org/jdk/pull/12518