// ==UserScript==// @name         Google Sheets Suppress F1 Key Preventing Help-Popup// @namespace    https://gist.github.com/f-steff// @version      1.1// @description  Interception of F1 keypress on Google Sheets and replaces default behavior with nothing.// @author       Flemming Steffensen// @license      MIT// @match        http://docs.google.com/spreadsheets/*// @match        https://docs.google.com/spreadsheets/*// @include      http://docs.google.com/spreadsheets/*// @include      https://docs.google.com/spreadsheets/*// @grant        none// @homepageURL  https://gist.github.com/f-steff/83be141ea8ce81a526e1b76a8be4a9bc// @run-at       document-start// ==/UserScript==document.addEventListener("keydown", function(event) {// For typical shortcuts//    Windows & Linux use the Control key == ctrlKey//    Mac uses the Command key == metaKey//    Other group keys are altKey and shiftKeyvar isMac = navigator.platform.toUpperCase().indexOf('MAC')>=0;var modifier = isMac ? event.metaKey : event.ctrlKey;var debug = falseif(debug) {if (!( (event.code === "ControlLeft") || (event.code === "ControlRight")|| (event.code === "MetaLeft") || (event.code === "MetaRight")|| (event.code === "AltLeft") || (event.code === "AltRight")|| (event.code === "ShiftLeft") || (event.code === "ShiftRight"))) {alert("Key pressed Pressed: " + event.code + " (" + event.keyCode + ") on " + (isMac ? "Mac" : "nonMac ") + (modifier ? "with" : " without") + " modifier." )}}// For some reason this triggers on F1, but not shift-F1, although event.code is F1 for both.if (event.code === "F1") {event.preventDefault();}});