<?php

    add_filter('wp-hide/mod_rewrite_rules', 'wp_hide__replace_rewrite_line', 999, 2);
    function wp_hide__replace_rewrite_line( $rules, $server_software )
        {

            if  ( $server_software !=   'apache' )
                return $rules;


            $rules  =   '#Pass-through if another rewrite rule has been previouslly applied'    .
                        "\n"    .   'RewriteCond %{ENV:REDIRECT_STATUS} 200'    .
                        "\n"    .   'RewriteRule ^ - [L]' .
                        "\n\n"  .   $rules;

            //replace all END flags with L
            $rules  =   str_replace( 'RewriteRule ^ - [L]', '#RewriteRule ^ - [L]', $rules );

            return $rules;

        }