I’m trying to add google tag manager to the head of my document.

Unfortunately, the way I’m doing it with an html tag render element, the ampersands (&) are being escaped.

function mymodule_page_attachments(array &$  page) {   $  config = \Drupal::config('mymodule.config');   $  gtm_id = $  config->get('google_tag_manager_id');   $  gtm_auth = $  config->get('gtm_auth');   $  gtm_preview = $  config->get('gtm_preview');    /** @var \Drupal\mymodule\AnalyticsUtility $  utility */   $  utility = \Drupal::service('mymodule.utility');    if (!empty($  gtm_id) && !empty($  gtm_auth) && !empty($  gtm_preview) && $  utility->isAdminPage() === FALSE) {       $  script = "(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl+ '&gtm_auth={$  gtm_auth}&gtm_preview={$  gtm_preview}&gtm_cookies_win=x';f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','{$  gtm_id}');\n";       $  page['#attached']['html_head'][] = [       ['#tag' => 'script', '#value' => $  script],       'google_tag_manager',     ];   } } 

This is resulting in ampersands in the code:

<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&amp;l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl+ '&amp;gtm_auth=testrWktRcmjpViiQKW&amp;gtm_preview=env-6&amp;gtm_cookies_win=x';f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-K53TEST');</script> 

There are two modules with google tag manager and they both add the code using hook_page_attachments.

The recommendation for adding javascript is to use an external file, yet the google tag manager documentation recommends adding the script in the head.

Is there a way to do this with Drupal settings and a javascript file in my custom module?

Or is there a way to NOT convert the ampersands to HTML entities?