Hide “free trial” text from Woocommerce Subscriptions price but keep the Sign-Up Fee

The first part of the question (Hide the “free trial” text from Woocommerce Subscriptions price) was answered in this awesome post:

Hide the "free trial" text from Woocommerce Subscriptions price

However, it removed the "and a xx sign-up fee". Is there any way to keep the sign up fee text after removing the free trial text?

Updated - Try the following:

add_filter( 'woocommerce_subscriptions_product_price_string', 'subscriptions_custom_price_string', 20, 3 );
function subscriptions_custom_price_string( $price_string, $product, $args ) {
    // Get the trial length to check if it's enabled
    $trial_length  = $product->get_meta('_subscription_trial_length');
    $subscr_period = $product->get_meta('_subscription_period');
    $subscr_fee    = wc_price( $product->get_meta('_subscription_sign_up_fee') );

    $sign_up_fee = isset($args['sign_up_fee']) ? __(" and a $subscr_fee sign-up fee", "woocommerce") : '';
    if( $trial_length > 0 )
        $price_string = $args['price'] . ' / ' . $subscr_period . $sign_up_fee;

    return $price_string;
}

Code goes in function.php file of your active child theme (or active theme). Tested and works.