Allows pasting into cosmetic text (including unicode).

fpuzzles-paste.js

// ==UserScript==
// @name         Fpuzzles-Paste
// @namespace    http://tampermonkey.net/
// @version      1.3
// @description  Allows pasting into cosmetic text (including unicode).
// @author       Rangsk
// @match        https://*.f-puzzles.com/*
// @match        https://f-puzzles.com/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    const doShim = function() {
        'use strict';

        window.addEventListener('paste', function(event) {
            if (!popup &&
                toolCosmetics.includes(currentTool) &&
                !disableInputs &&
                !testPaused()) {
                event.preventDefault();

                const text = (event.clipboardData || window.clipboardData).getData('text/plain');
                if (text && text.length > 0) {
                    for (var i = 0; i < text.length; i++) {
                        const c = text.charAt(i);
                        const cUpper = c.toUpperCase();
                        if (!cosmeticTypableCharacters.includes(cUpper)) {
                            cosmeticTypableCharacters.push(cUpper);
                        }
                        const prevControlling = controlling;
                        controlling = false;
                        typeCosmetic(text.charAt(i));
                        controlling = prevControlling;
                    }
                }
            }
        });

        const prevOnKeyDown = document.onkeydown;
        document.onkeydown = function(event) {
            // Don't let 'v' change modes.
            if (event.key !== 'v' ||
                popup ||
                !toolCosmetics.includes(currentTool) ||
                disableInputs ||
                testPaused() ||
                !event.ctrlKey ||
                event.altKey ||
                event.metaKey) {
                prevOnKeyDown(event);
            }
        }
    }

    let intervalId = setInterval(() => {
        if (!document.onkeydown) {
            return;
        }

        clearInterval(intervalId);
        doShim();
    }, 16);
})();