Use getHtmlCode() instead of getCode() to set the lang attribute

The lang attribute of HTML elements should conform to BCP 47.

Change-Id: Ia8a088add29daea39e90bb277279a6485990d18a

diff --git a/includes/page/Article.php b/includes/page/Article.php
index 0318f65..45b6298 100644 (file)
--- a/includes/page/Article.php
+++ b/includes/page/Article.php
@@ -835,7 +835,7 @@ class Article implements Page {
 
                if ( $showCacheHint ) {
                        $dir = $this->getContext()->getLanguage()->getDir();
-                       $lang = $this->getContext()->getLanguage()->getCode();
+                       $lang = $this->getContext()->getLanguage()->getHtmlCode();
 
                        $outputPage->wrapWikiMsg(
                                "<div id='mw-clearyourcache' lang='$lang' dir='$dir' class='mw-content-$dir'>\n$1\n</div>",