well, fix WhatsApp i guess.
// ==UserScript==
// @name Send message on <C-Enter>
// @namespace Violentmonkey Scripts
// @license MIT
// @match https://web.whatsapp.com/*
// @grant none
// @version 1.0
// @author tippfehlr
// @icon https://www.google.com/s2/favicons?sz=64&domain=whatsapp.com
// @description well, fix WhatsApp i guess.
// ==/UserScript==
onkeydown = function(e){
if(e.ctrlKey && e.key == 'Enter'){
e.preventDefault();
e.stopPropagation();
document.querySelector('[data-icon="send"]').click()
}
}