Ticket #32981: comment_filter.diff

wp-comments-post.php

@@ -126 +126 @@
         }
 }
 
+$comment_content = apply_filters( 'comment_content_check', $comment_content );
+
 if ( '' == $comment_content ) {
         wp_die( __( '<strong>ERROR</strong>: please type a comment.' ), 200 );
 }