sperber(a)informatik.uni-tuebingen.de (Michael Sperber [Mr. Preprocessor]) writes: Unfortunately, it is true that maintaining hygiene using MAKE-SYMBOL and GENSYM is hard, especially if you wish not to cons unnecessary symbols. Take a look at `let-specifier' in the latest XEmacs sources, and to what lengths one must go to write safe macros. That was very tedious, and not in the least fun to write. On the other hand, in Lisp you cannot be screwed by binding CONS, or anything like that. Also, I have no idea how hygienic macro facility works in Scheme. It certainly can. Try it! -- Hrvoje Niksic <hniksic(a)srce.hr&gt; | Student at FER Zagreb, Croatia --------------------------------+-------------------------------- 4. Thou shalt not warlorde a sig if it bee the sig of Kibo, nor if it bee the sig of the Inner Circle.