Bad regexp to img_assist_custom with img_assist 6.x-1.1

In auto_image_handling.js on line 103 the regex: RegExp("\\.img_assist_custom-[0-9]+x[0-9]+") dont match to normal img_assist_custom images (w/o size info on file name).
Good regexp is eg.: RegExp("[\.]img_assist_custom[-]{0,1}[0-9]*[x]{0,1}[0-9]*") that match both w and w/o the size info.