taiga-ctrl-enter.js

// ==UserScript==
// @name     Taiga Ctrl+Enter support
// @version  1
// @description Maintained by Keith
// @grant    none
// @require  https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js
// @require  https://gist.github.com/BrockA/2625891/raw/waitForKeyElements.js
// @include      https://tchaikovsky.web.lt/*
// @include      http://tchaikovsky.web.lt/*
// ==/UserScript==

// Use function provided by waitForKeyElements to execute function on element creation
waitForKeyElements('tg-wysiwyg', onNewEditor);

function onNewEditor(nodes) {
  nodes.each(node => {
    const $node = $(node);
    
    const textarea = $node.find('textarea')[0];
    const save_button = $node.find('[tg-loading="saving"]')[0];

    $(textarea).keypress(event => {
      const $textarea = $(event.target);

      if ((event.ctrlKey || event.metaKey) && (event.keyCode == 13 || event.keyCode == 10)) {
          save_button.click()
      }
    });
  })
}