Previously, when using `switch_to_locale()` all current loaded text domains were unloaded and added to the `$l10n_unloaded` global. This prevented the just-in-time loading for text domains after a switch. The just-in-time loading was also only possible if the translations were stored in `WP_LANG_DIR`. Both issues have been fixed.
* Adds `WP_Textdomain_Registry` to keep track of the language directory paths for all plugins and themes.
* Updates all `load_*_textdomain()` functions to store the path in `WP_Textdomain_Registry`.
* Adds `$reloadable` parameter to `unload_textdomain()` to define whether a text domain can be loaded just-in-time again. This is used by `WP_Locale_Switcher::load_translations()`.
* Extends `_load_textdomain_just_in_time()` to also support text domains of plugins and themes with custom language directories.
* Fixes the incorrect `test_plugin_translation_after_switching_locale_twice()` test which should have catch this issue earlier.
* Adds a new test plugin/theme to test the loading of translations with a custom language directory.
* Deprecates the now unused and private `_get_path_to_translation()` and `_get_path_to_translation_from_lang_dir()` functions.
Props yoavf, swissspidy, dd32, ocean90.
See #26511.
Fixes#39210.
git-svn-id: https://develop.svn.wordpress.org/trunk@49236 602fd350-edb4-49c9-b593-d223f7449a82
This introduces three new strings that can be used to control the maximum length of automatically generated excerpts for posts, comments, and draft post previews in the dashboard. Optionally combined with the existing word count type control this allows languages which include many multibyte characters to specify more appropriate maximum excerpt lengths.
Props miyauchi, birgire, johnbillion
Fixes#44541
git-svn-id: https://develop.svn.wordpress.org/trunk@45505 602fd350-edb4-49c9-b593-d223f7449a82
Adds the `wp_set_script_translations()` function which registers translations for a JavaScript file. This function takes a handle, domain and optionally a path and ensures JavaScript translation files are loaded if they exist.
Merges [43825,43828,43859,43898] from the 5.0 branch to trunk.
Props herregroen, atimmer, omarreiss, nerrad, swissspidy, ocean90, georgestephanis.
Fixes#45103, #45256.
git-svn-id: https://develop.svn.wordpress.org/trunk@44169 602fd350-edb4-49c9-b593-d223f7449a82
By initially scanning the `wp-content/languages` directory and loading available MO files just-in-time, plugins and themes do not need to manually load text domains anymore.
Props swissspidy, ocean90.
Fixes#34114
git-svn-id: https://develop.svn.wordpress.org/trunk@37415 602fd350-edb4-49c9-b593-d223f7449a82
Introduces language files in /tests/phpunit/data/language. Each file includes the header and 5 translations.
Props realloc for initial patch.
Fixes#35284.
git-svn-id: https://develop.svn.wordpress.org/trunk@36563 602fd350-edb4-49c9-b593-d223f7449a82
