code: function updatePathGuides(parent) {
  	var handles = parent._handles,
  		guides = parent._guides,
  		handle, h,
  		guide, g;
  	if (parent._method === $.fn.drawQuadratic) {
  		if (handles) {
  			guide = parent._guide;
  			if (guide) {
  				for (h = 0; h < handles.length; h += 1) {
  					handle = parent._handles[h];
  					guide['x' + (h + 1)] = handle.x;
  					guide['y' + (h + 1)] = handle.y;
  				}
  			}
  		}
  	} else if (parent._method === $.fn.drawBezier) {
  		if (guides) {
  			for (g = 0; g < guides.length; g += 1) {
  				guide = guides[g];
  				handles = guide._handles;
  				if (guide && handles) {
  					for (h = 0; h < handles.length; h += 1) {
  						handle = handles[h];
  						guide['x' + (h + 1)] = handle.x;
  						guide['y' + (h + 1)] = handle.y;
  					}
  				}
  			}
  		}
  	}
  }
docs: Update handle guides for line path