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iSkile / pikabu potrashki and nick

// ==UserScript==
// @icon http://s.pikabu.ru/favicon.ico
// @name pikabu potrashki and nick
// @namespace http://pikabu.ru/
// @license MIT
// @version 0.1.2
// @include http://pikabu.ru/*
// @run-at document-idle
// @grant none
// ==/UserScript==

(function () {
  function textNodesUnder(el) {
    var walk,
      arr = [];

    walk = document.createTreeWalker(el, NodeFilter.SHOW_TEXT, {
      acceptNode: function (node) {
        var name, tNode = node;
        while ((tNode = tNode.parentNode) && (name = tNode.nodeName.toLowerCase()) != 'body') {
          if (~['style', 'script', 'texarea', 'pre', 'code'].indexOf(name)) {
            return NodeFilter.FILTER_REJECT;
          }
        }
        if (node.data.trim() !== '') {
          return NodeFilter.FILTER_ACCEPT;
        }
      }
    }, false);

    while (el = walk.nextNode()) {
      arr.push(el);
    }

    return arr;
  }

  let textNodes = textNodesUnder(document.body);
  let profile = document.querySelector('div#right_menu a[href^="http://pikabu.ru/profile/"]');

  if (profile) {
    let nick = profile.textContent;
    let profileLinks = document.querySelectorAll('.b-comment__user > a[href="' + profile.href + '"] > span');

    for (let link of profileLinks) {
      if (!link.classList.contains('b-comment__user_author_story')) {
        link.className = 'b-comment__user_author_story';
        link.style.backgroundColor = '#00BCD4';
      }
    }
  }

  for (let node of textNodes) {
    node.data = node.data.replace(/п[о|o]т[р|p].ш([a-zа-я]+)\B/gi, 'потраш$1'); //[A|А|Ɐ|Ⱥ|@]
  }
})();