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From: "Sergei Egorov" <esl@xxxxxxxxxxxxxxx> Date: Thu, 30 Sep 1999 15:15:01 -0400 I woud only suggest to read #,(...) as (hash-comma ...) and (define-syntax hash-comma (syntax-rules () ((_ ?x) (force (delay ?x)))). This would expose only one name to name capture -related hazards of read-macro expansion. Good idea. It would be better to have a name that reflected the behavior rather than the syntax, just as , is `unquote' and not `comma'. It's a pity that this form won't work inside quoted constants, though... You can get something close by combining #, with quasiquote. Just do #,`(a ,(foo b c) d) instead of '(a #,(foo b c) d) We could have #`x be a shorthand for (force (delay (quasiquote x))), either instead of or in addition to #, . -Richard Kelsey