Ticket #10797: 10797.2.patch

wp-includes/formatting.php

@@ -787 +787 @@
 function sanitize_title($title, $fallback_title = '', $context = 'save') {
         $raw_title = $title;
 
-        if ( 'save' == $context )
+        if ( 'save' == $context ) {
                 $title = remove_accents($title);
 
+                $special_chars = array(
+                        chr(0xE2).chr(0x80).chr(0x93) => '-', chr(0xE2).chr(0x80).chr(0x94) => '-', // ndash and mdash
+                        chr(0xE2).chr(0x80).chr(0x9C) => '',  chr(0xE2).chr(0x80).chr(0x9D) => '',  // double curly quotes
+                        chr(0xE2).chr(0x80).chr(0x98) => '',  chr(0xE2).chr(0x80).chr(0x99) => '',  // single curly quotes
+                        chr(0xE2).chr(0x80).chr(0xA6) => ''                                         // hellip
+                );
+
+                $title = strtr( $title, $special_chars );
+        }
+
         $title = apply_filters('sanitize_title', $title, $raw_title, $context);
 
         if ( '' === $title || false === $title )