+
+ /**
+ * Turns section name wikitext into anchors for use in HTTP redirects. Various
+ * versions of Microsoft browsers misinterpret fragment encoding of Location: headers
+ * resulting in mojibake in address bar. Redirect them to legacy section IDs,
+ * if possible. All the other browsers get HTML5 if the wiki is configured for it, to
+ * spread the new style links more efficiently.
+ *
+ * @param string $text
+ * @return string
+ */
+ private function guessSectionName( $text ) {
+ global $wgParser;
+
+ // Detect Microsoft browsers
+ $userAgent = $this->context->getRequest()->getHeader( 'User-Agent' );
+ if ( $userAgent && preg_match( '/MSIE|Edge/', $userAgent ) ) {
+ // ...and redirect them to legacy encoding, if available
+ return $wgParser->guessLegacySectionNameFromWikiText( $text );
+ }
+ // Meanwhile, real browsers get real anchors
+ return $wgParser->guessSectionNameFromWikiText( $text );
+ }