vendor/emmet.js
function(start, end) {
			if (_.isNumber(start) && _.isNumber(end)) {
				end -= start;
			}
			
			return this.create(start, end);
		}
function(start, end) {
			if (_.isNumber(start) && _.isNumber(end)) {
				end -= start;
			}
			
			return this.create(start, end);
		}
<code>Range</code> object factory, the same as <code>this.create()</code>
but last argument represents end of range, not length
@returns {Range}