Thanks very much to all of you. It looks like 'match.call' is the key, and both Brian's and Gabor's solutions work fine. --- Mike. -- View this message in context: http://www.nabble.com/Getting-names-of-objects-passed-with-%22...%22-tf3850318.html#a10913978 Sent from the R help mailing list archive at Nabble.com.