consumer.js
function(regex){
		//if it isn't global, `exec()` will not start at `lastIndex`
		if(!regex.global)
			regex.compile(regex.source, flags(regex));
		regex.lastIndex = this.position;
		var m = regex.exec(this.source);

		//all matches must start at the current position.
		if(m && m.index!=this.position){
			return null;
		}

		if(m) this.position += m[0].length;
		return m;
	}
function(regex){
		//if it isn't global, `exec()` will not start at `lastIndex`
		if(!regex.global)
			regex.compile(regex.source, flags(regex));
		regex.lastIndex = this.position;
		var m = regex.exec(this.source);

		//all matches must start at the current position.
		if(m && m.index!=this.position){
			return null;
		}

		if(m) this.position += m[0].length;
		return m;
	}
function ( regex ) { //if it isn't global, `exec()` will not start at `lastIndex` if ( ! regex . global ) regex . compile ( regex . source , flags ( regex ) ) ; regex . lastIndex = this . position ; var m = regex . exec ( this . source ) ; //all matches must start at the current position. if ( m && m . index != this . position ) { return null ; } if ( m ) this . position += m [ 0 ] . length ; return m ; }
Consume the characters matched by the 'regex'.
@param {RegExp} regex
Consume the characters matched by the regex .