LaTeX Cleanup UserScript for arXiv

arxiv_latex_zapper.user.js

// ==UserScript==
// @name         arXiv LaTeX Zapper.user.js
// @namespace    https://gist.github.com/iqiancheng
// @author       qian.cheng
// @version      0.3
// @description  Zap those pesky LaTeX elements that snuck into the HTML on arXiv
// @downloadURL  https://gist.githubusercontent.com/iqiancheng/9945010cc85209185618c964bdd84fd1/raw/969a26e502d4487569a561013612eb6b019bfb1b/arxiv_latex_zapper.user.js
// @updateURL    https://gist.githubusercontent.com/iqiancheng/9945010cc85209185618c964bdd84fd1/raw/969a26e502d4487569a561013612eb6b019bfb1b/arxiv_latex_zapper.user.js
// @match        *://ar5iv.labs.arxiv.org/html/*
// @match        *://arxiv.org/html/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function nukeLatexElements() {
        // This regex is our LaTeX-spotting superpower
        const latexPattern = /\\newfloatcommand|capbtabboxtable\s*\[\s*\]\s*\[|\\FBwidth/;

        // Round up all the <p> and <span> suspects
        const elements = document.querySelectorAll('p, span');

        elements.forEach(element => {
            // Is this element harboring LaTeX fugitives?
            if (latexPattern.test(element.textContent)) {
                // Caught red-handed! Time to disappear
                element.remove();
                console.log('Busted and removed:', element.textContent);
            }
        });
    }

    // Fire up our LaTeX cleanup crew when the page loads
    window.addEventListener('load', nukeLatexElements);

    // Set up a stakeout for any sneaky, late-arriving LaTeX
    const observer = new MutationObserver(nukeLatexElements);
    observer.observe(document.body, { childList: true, subtree: true });
})();