From a22b094047225dfaa507f2142afcc5218817fea5 Mon Sep 17 00:00:00 2001
From: Pascal Birchler <pascal.birchler@gmail.com>
Date: Wed, 29 May 2024 15:44:13 +0000
Subject: [PATCH] I18N: Add new `lang_dir_for_domain` filter.

This new filter in `WP_Textdomain_Registry` allows plugins to override the determined languages folder when using just-in-time translation loading.

Props swissspidy, chouby, johnbillion.
Fixes #61206.
Built from https://develop.svn.wordpress.org/trunk@58236


git-svn-id: http://core.svn.wordpress.org/trunk@57699 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/class-wp-textdomain-registry.php | 17 ++++++++++++-----
 wp-includes/version.php                      |  2 +-
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/wp-includes/class-wp-textdomain-registry.php b/wp-includes/class-wp-textdomain-registry.php
index fe6d04b0a1..70e41eabfd 100644
--- a/wp-includes/class-wp-textdomain-registry.php
+++ b/wp-includes/class-wp-textdomain-registry.php
@@ -88,14 +88,21 @@ class WP_Textdomain_Registry {
 	 * @param string $domain Text domain.
 	 * @param string $locale Locale.
 	 *
-	 * @return string|false MO file path or false if there is none available.
+	 * @return string|false Languages directory path or false if there is none available.
 	 */
 	public function get( $domain, $locale ) {
-		if ( isset( $this->all[ $domain ][ $locale ] ) ) {
-			return $this->all[ $domain ][ $locale ];
-		}
+		$path = $this->all[ $domain ][ $locale ] ?? $this->get_path_from_lang_dir( $domain, $locale );
 
-		return $this->get_path_from_lang_dir( $domain, $locale );
+		/**
+		 * Filters the determined languages directory path for a specific domain and locale.
+		 *
+		 * @since 6.6.0
+		 *
+		 * @param string|false $path   Languages directory path for the given domain and locale.
+		 * @param string       $domain Text domain.
+		 * @param string       $locale Locale.
+		 **/
+		return apply_filters( 'lang_dir_for_domain', $path, $domain, $locale );
 	}
 
 	/**
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3a5867c6f1..a99bd7de9e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58235';
+$wp_version = '6.6-alpha-58236';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.