Previously, if no translation files exist for a text domain, `_load_textdomain_just_in_time()` went through the entire process each time it was called. This results in an increased call to `get_locale()` and its `locale` filter. This change splits the logic into `_get_path_to_translation()` and `_get_path_to_translation_from_lang_dir()`. The former, which is used by `_load_textdomain_just_in_time()`, caches the result of the latter. It also removes some non-working code from `WP_Locale_Switcher::load_translations()`. Props jrf, swissspidy, sharkomatic, ocean90. Fixes #37997. git-svn-id: https://develop.svn.wordpress.org/trunk@39330 602fd350-edb4-49c9-b593-d223f7449a82 |
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