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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/57286">57286</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/57286","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>swissspidy</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-01-15 18:55:59 +0000 (Mon, 15 Jan 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Upgrade/Install: Fix JavaScript localization on install page.

Blocks registration causes scripts to be initialized and localized very early, before the current locale has been properly set on the installation page.

This changes `determine_locale()` so that the locale chosen during installation is recognized and loaded earlier, ensuring proper script localization.

Props sabernhardt, NekoJonez, jornp, costdev.
Fixes <a href="https://core.trac.wordpress.org/ticket/58696">#58696</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadmininstallphp">trunk/src/wp-admin/install.php</a></li>
<li><a href="#trunksrcwpincludesl10nphp">trunk/src/wp-includes/l10n.php</a></li>
<li><a href="#trunktestsphpunittestsl10ndetermineLocalephp">trunk/tests/phpunit/tests/l10n/determineLocale.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadmininstallphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/install.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/install.php    2024-01-15 17:40:06 UTC (rev 57285)
+++ trunk/src/wp-admin/install.php      2024-01-15 18:55:59 UTC (rev 57286)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -329,7 +329,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><span class="cx" style="display: block; padding: 0 10px"> $language = '';
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! empty( $_REQUEST['language'] ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $language = preg_replace( '/[^a-zA-Z0-9_]/', '', $_REQUEST['language'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $language = sanitize_locale_name( $_REQUEST['language'] );
</ins><span class="cx" style="display: block; padding: 0 10px"> } elseif ( isset( $GLOBALS['wp_local_package'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">        $language = $GLOBALS['wp_local_package'];
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="trunksrcwpincludesl10nphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/l10n.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/l10n.php    2024-01-15 17:40:06 UTC (rev 57285)
+++ trunk/src/wp-includes/l10n.php      2024-01-15 18:55:59 UTC (rev 57286)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -150,6 +150,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                ( isset( $_GET['_locale'] ) && 'user' === $_GET['_locale'] && wp_is_json_request() )
</span><span class="cx" style="display: block; padding: 0 10px">        ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $determined_locale = get_user_locale();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        } elseif (
+               ( ! empty( $_REQUEST['language'] ) || isset( $GLOBALS['wp_local_package'] ) )
+               && wp_installing()
+       ) {
+               if ( ! empty( $_REQUEST['language'] ) ) {
+                       $determined_locale = sanitize_locale_name( $_REQUEST['language'] );
+               } else {
+                       $determined_locale = $GLOBALS['wp_local_package'];
+               }
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        if ( ! $determined_locale ) {
</span></span></pre></div>
<a id="trunktestsphpunittestsl10ndetermineLocalephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/l10n/determineLocale.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/l10n/determineLocale.php        2024-01-15 17:40:06 UTC (rev 57285)
+++ trunk/tests/phpunit/tests/l10n/determineLocale.php  2024-01-15 18:55:59 UTC (rev 57286)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -20,7 +20,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        public function tear_down() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                unset( $_SERVER['CONTENT_TYPE'], $_GET['_locale'], $_COOKIE['wp_lang'], $GLOBALS['pagenow'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         unset(
+                       $_SERVER['CONTENT_TYPE'],
+                       $_GET['_locale'],
+                       $_COOKIE['wp_lang'],
+                       $GLOBALS['pagenow'],
+                       $GLOBALS['wp_local_package'],
+                       $_REQUEST['language']
+               );
+               wp_installing( false );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                parent::tear_down();
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -273,4 +281,31 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertSame( 'siteLocale', determine_locale() );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       public function test_language_param_not_installing() {
+               $_REQUEST['language'] = 'de_DE';
+               $this->assertSame( 'en_US', determine_locale() );
+       }
+
+       public function test_language_param_installing() {
+               $_REQUEST['language'] = 'de_DE';
+               wp_installing( true );
+               $this->assertSame( 'de_DE', determine_locale() );
+       }
+
+       public function test_language_param_installing_incorrect_string() {
+               $_REQUEST['language'] = '####';  // Something sanitize_locale_name() strips away.
+               wp_installing( true );
+               $this->assertSame( 'en_US', determine_locale() );
+       }
+
+       public function test_wp_local_package_global_not_installing() {
+               $_REQUEST['language'] = 'de_DE';
+               $this->assertSame( 'en_US', determine_locale() );
+       }
+       public function test_wp_local_package_global_installing() {
+               $_REQUEST['language'] = 'de_DE';
+               wp_installing( true );
+               $this->assertSame( 'de_DE', determine_locale() );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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