wp-includes/class-wp-textdomain-registry.php:313Gets the path to the language directory for the current domain and locale.
$domainstring$localestringstring|false private function get_path_from_lang_dir( $domain, $locale ) { $locations = $this->get_paths_for_domain( $domain ); $found_location = false; foreach ( $locations as $location ) { $files = $this->get_language_files_from_path( $location ); $mo_path = "$location/$domain-$locale.mo"; $php_path = "$location/$domain-$locale.l10n.php"; foreach ( $files as $file_path ) { if ( ! in_array( $domain, $this->domains_with_translations, true ) && str_starts_with( str_replace( "$location/", '', $file_path ), "$domain-" ) ) { $this->domains_with_translations[] = $domain; } if ( $file_path === $mo_path || $file_path === $php_path ) { $found_location = rtrim( $location, '/' ) . '/'; break 2; } } } if ( $found_location ) { $this->set( $domain, $locale, $found_location ); return $found_location; } /* * If no path is found for the given locale and a custom path has been set * using load_plugin_textdomain/load_theme_textdomain, use that one. */ if ( isset( $this->custom_paths[ $domain ] ) ) { $fallback_location = rtrim( $this->custom_paths[ $domain ], '/' ) . '/'; $this->set( $domain, $locale, $fallback_location ); return $fallback_location; } $this->set( $domain, $locale, false ); return false; }Introduced in 6.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-textdomain-registry.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.