// ==UserScript==
// @name          Coincidence Detector
// @description   Detects coincidences.
// @include       *
// @grant         GM_getResourceText
// @resource      theList https://gitlab.com/therightstuff/public/raw/master/theList.json
// ==/UserScript==


var theList = JSON.parse(GM_getResourceText("theList"));
var regexp = new RegExp('\\b(' + theList.join('|') + ')\\b(?!\\)\\))', "gi");

function walk(node) {
    // I stole this function from here:
    // http://is.gd/mwZp7E

    var child, next;

    switch ( node.nodeType )
    {
        case 1:
        case 9:
        case 11:
            child = node.firstChild;
            while ( child )
            {
                next = child.nextSibling;
                walk(child);
                child = next;
            }
            break;

        case 3:
            handleText(node);
            break;
    }
}

function handleText(textNode) {
    textNode.nodeValue = textNode.nodeValue.replace(regexp, '((($1)))');
}

walk(document.body);