WordPress/wp-includes
Dominik Schilling a505398b95 I18N: Change how WP_Textdomain_Registry stores the default languages path.
`WP_Textdomain_Registry` was introduced in [53874] to store text domains and their language directory paths, addressing issues with just-in-time loading of textdomains when using locale switching and when using`load_*_textdomain()` functions.

Said change has inadvertently caused a performance regression exactly when using`load_*_textdomain()`, which still often is the case, where the cached information was not further used or even overridden.

This change addresses that issue by storing the default languages paths in a separate way, while at the same time making `WP_Textdomain_Registry` easier to maintain and adding new tests to catch future regressions.

Props flixos90, spacedmonkey, ocean90, SergeyBiryukov, costdev.
Merges [54669] to the 6.1 branch.
See #39210.
Built from https://develop.svn.wordpress.org/branches/6.1@54682


git-svn-id: http://core.svn.wordpress.org/branches/6.1@54234 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2022-10-24 18:37:15 +00:00
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