settings.php

if (defined('PANTHEON_ENVIRONMENT')) {
 
/**
 * Handle Subdomain Redirects.
*/
  if ($_SERVER['PANTHEON_ENVIRONMENT'] === 'live') {
    switch ($_SERVER['HTTP_HOST']) {

      // Remove WWW.
       case 'www.patch.com':
       case 'live-patch-fe.pantheon.io':
         header('HTTP/1.0 301 Moved Permanently');
         header('Location: http://patch.com' . $_SERVER['REQUEST_URI']);
        exit();

      // Map <something>.patch.com to patch.com/<something> and let
      // custom_router_url_inbound_alter() issue a 301 redirect to the
      // full path including state term
      default:
        $subdomain = str_replace('patch.com', '', $_SERVER[HTTP_HOST]);
        if (strpos($subdomain, '.')) {
          $_SERVER[HTTP_HOST] = 'patch.com';
          $_GET['q'] = str_replace('.', '', $subdomain) . DIRECTORY_SEPARATOR . $_GET['q'];
        }
        break;
    }
  }


// Remove WWW.
if (isset($_SERVER['PANTHEON_ENVIRONMENT']) &&
  $_SERVER['PANTHEON_ENVIRONMENT'] === 'live') {
  if ($_SERVER['HTTP_HOST'] == 'www.patch.com' ||
      $_SERVER['HTTP_HOST'] == 'live-patch-fe.pantheon.io') {
    header('HTTP/1.0 301 Moved Permanently');
    header('Location: http://patch.com'. $_SERVER['REQUEST_URI']);
    exit();
  }
} 

Should line 30 onward be on patch-services, not patch-redirects?

Ah, that was all intended to be on patch frontend... Line 30 on was removed from the previous version and replaced with the top half