MTM potential patch

Index: mtm-tag-admin.php
===================================================================
--- mtm-tag-admin.php   (revision 6)
+++ mtm-tag-admin.php   (working copy)
@@ -20,7 +20,11 @@
        }
        //go through all non-empty values and wp_kses it
        foreach( $values as $k => $v ){
-           $values[$k] = wp_kses(wp_unslash($v), array());
+           if( $k == 'content'){
+               $values[$k] = wp_unslash($v);
+           }else{
+               $values[$k] = wp_kses(wp_unslash($v), array());
+           }
        }
        //now pass cleaned values to parent constructor
        parent::__construct($values);
Index: mtm-tag.php
===================================================================
--- mtm-tag.php (revision 4)
+++ mtm-tag.php (working copy)
@@ -22,7 +22,12 @@
    public function output(){
        $tag_string = '<meta '.esc_attr($this->type).'="'.esc_attr($this->value).'"';
        if( $this->has_content() ){
-           $tag_string .= ' content="'.esc_attr($this->content).'"';
+           if( $this->type == 'http-equiv' && $this->value == 'Link' ){
+               //escape the attribute but allow for the <url>; format to pass through
+               $tag_string .= ' content="'.preg_replace('/&lt;(.+)&gt;;/', '<$1>;', esc_attr($this->content)).'"';
+           }else{
+               $tag_string .= ' content="'.esc_attr($this->content).'"';
+           }
        }
        $tag_string .= ' />';
        return $tag_string;