It seems obvious from the responses I've had, that one of the programs needs to be renamed (no other solutions were presented, and, frankly, I can't really think of one that won't cause problems). If we assume this is the case, it is fairly obvious which one should be renamed: the Mercury one.
Mercury's "mc" probably isn't often invoked by the average Mercury user - it's normally called by the automated build tools that come with it. This means that many users won't notice the change anyway. For anyone who's interested, the new name will be "merc" (chosen by consultation with the Mercury authors). Warwick ---------------------------------------------------------------------------- Warwick Harvey email: [EMAIL PROTECTED] Department of Computer Science phone: +61-3-9287-9171 University of Melbourne fax: +61-3-9348-1184 Parkville, Victoria, AUSTRALIA 3052 web: http://www.cs.mu.OZ.AU/~warwick