function replace(match, text) {
			var rng = rangeFromMatch(match);

			rng.deleteContents();

			if (text.length > 0) {
				rng.insertNode(editor.dom.doc.createTextNode(text));
			}

			return rng;
		}
Replaces the specified match with the specified text.

@param {Object} match Match object to replace.
@param {String} text Text to replace the match with.
@return {DOMRange} DOM range produced after the replace.