Issue #3226560: make autocomplete work with commas

address_autocomplete:

  js:

    js/address_autocomplete.js: {}

    js/autocomplete_override.js: {}

  dependencies:

    - core/jquery

    - core/jquery.once

(function ($, Drupal) {

  // Overrides the default function extractLastTerm() found in core/misc/autocomplete.js

  // Default behavior splits text containing commas in autocomplete input fields into

  //  multiple search terms.

  // Single line addresses contain commas. When entered with commas autocomplete only returns results

  //  for the last portion of the address after a comma.

  let oldLastTerm = Drupal.autocomplete.extractLastTerm;

  Drupal.autocomplete.extractLastTerm = function (terms) {

    return oldLastTerm('"' + terms + '"');

  }

})(jQuery, Drupal);