(Back up) Floflo.moe - A WK-friendly website for reading

Japanese Language
2096

You’ll probably want to edit it to suit your needs, but put keys you want to block handling of in the matchers array, and add @match entries for whatever websites you want to run it on. Also you can delete the code after the comment about google drive if you aren’t interested in the conversion it mentions

// ==UserScript==
// @name         Stop Keyboard Shortcut Hijacking
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Blocks hijacking of the shortcuts that websites like to hijack
// @author       TellowKrinkle
// @match        https://floflo.moe/testing/
// @match        https://drive.google.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    function dispatchKeyboardEvent(options) {
        let event = new KeyboardEvent("keydown", options);
        document.body.dispatchEvent(event);
    }
    let matchers = [
        (e) => { return e.code == "KeyA" &&  e.ctrlKey && !e.shiftKey && !e.metaKey && !e.altKey },
        (e) => { return e.code == "KeyZ" && !e.ctrlKey && !e.shiftKey &&  e.metaKey && !e.altKey && e.isTrusted }
    ];
    document.addEventListener("keydown", function(e) {
        if (matchers.filter(matcher => matcher(e)).length > 0) {
            e.cancelBubble = true;
            e.stopImmediatePropagation();
        }
        // Convert Cmd-Option-Z into Cmd-Z because Google Drive doesn't expose their undo feature through any menu systems
        if (e.code == "KeyZ" && !e.ctrlKey && !e.shiftKey && e.metaKey && e.altKey) {
            e.cancelBubble = true;
            e.stopImmediatePropagation();
            dispatchKeyboardEvent({ code: "KeyZ", metaKey: true, keyCode: 90, key: "z", which: 90 })
        }
    }, true);
})();
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