Strip taxonomy base from URL

strip-taxonomy-base.php

<?php

function tl_filter_term_link( $termlink, $term, $taxonomy ) {
    if ( 'taxonomy' != $taxonomy )
        return $termlink;

    $termlink = str_ireplace( 'taxonomy/', '', $termlink );

    return $termlink;
}
add_filter( 'term_link', 'tl_filter_term_link', 10, 3 );

function tl_tax_check( $query_vars ) {

    if ( isset( $query_vars['pagename'] ) ) {
        // Todo: hardcode category ID's

        $tax_name = $query_vars['pagename'];
        if ( strpos( $tax_name, '/' ) !== false )
            $tax_name = preg_replace( '#[^/]*/(.*)#is', '$1', $query_vars['pagename'] );

        if ( $tax = wpcom_vip_get_term_by( 'slug', $tax_name, 'taxonomy' ) ) {
            $query_vars['taxonomy'] = $tax_name;
            unset( $query_vars['pagename'] );
        }
    }
    return $query_vars;
}
add_filter( 'request', 'tl_tax_check' );