DocumentFragment only matches childNodes

[Joris-van-der-Wel]

I was trying to get querySelector in jsdom to work on DocumentFragments, but I think I have come across an issue in this library.
To rule out anything in jsdom I have tried using this library in chrome and firefox 27

NW.Dom.configure( { USE_QSAPI: false, VERBOSITY: true, CACHING: false } );
var frag = document.createDocumentFragment();
var div = document.createElement('div');
frag.appendChild(div);
var p = document.createElement('p');
div.appendChild(p);
console.log(frag.querySelector('div')); // Firebug / chrome dev tools shows <div>
console.log(NW.Dom.first('div', frag)); // <div>
console.log(frag.querySelector('p')); // <p>
console.log(NW.Dom.first('p', frag)); // null

I think the issue is in nwmatches-noqsa.js:725

If I replace that line with this:

        elements = [];
        var node = from.firstChild;
        while(node) {
          if (node.nodeType === 1) {
            elements.push(node);
          }
          if (node.firstChild) {
            node = node.firstChild;
          } else {
            while (!node.nextSibling) {
              node = node.parentNode;
              if (node === from) {
                break;
              }
            }            
            node = node.nextSibling;
          }
        }

it seems to work properly. That code should give identical results as getElementsByTagName('*')

I'll send a pull request in a moment. I will try to match the code style used (2 spaces per indent is hurting my eyes haha).