Not using field labels

I want to piggy back on this. Alias is not a solution for me. I am generating a Google product feed and several of the fields need to be labeled with a ":" such as "g:id". This is not possible using an alias as it gives me the following error: "The machine-readable name must contain only letters, numbers, dashes and underscores."

Hi, did anyone solve this issue.
I'm trying to create a google shopping feed.
I really need the tags to use the g: format, but the alias does not support colon in it.
Also the field labels aren't used.

Any ideas or pointers in the right direction?
Thanks in advance.

Hi,
While looking a bint further in the issues I did create a solution.

Add the following in a custom module to create an alter of the alias names. (In my case it replaces a double underscore "__" with a colon ":")

Hope this helps anyone else.

/**
 * Implements hook_views_data_export_row_alter().
 */
function [YOURMODULE]_views_data_export_row_alter(&$output, ResultRow $row, ViewExecutable $view) {
  // For a specific view and display.
  if ($view->storage->id() == '[YOUR_VIEW]' && $view->current_display == '[YOUR_DISPLAY]') {
    foreach ($output as $key => $value) {
      $new_key = str_replace("__",":",$key);
      unset ($output[$key]);
      $output[$new_key] = $value != '' ? $value : '';
    }
  }
}