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Per Bothner <per@xxxxxxxxxxx> writes: > I don't buy this at all. Why can't I replace: > (make-simple-reader id descriptor etc ...) > by > (make-simple-input-port id descriptor etc ...) > I.e. why can't I merge the functionality of readers into > input-ports? You could do that, but you'd have eliminated only one procedure call. Moreover, it's unclear to me what you've gained. It still wouldn't make the primitive layer obsolete. You've stated that you think you can get their performance, and lack of buffering from the ports layer, but you haven't demonstrated how to do it---it's certainly not straightforward, given the buffering inherent in things like PEEK-CHAR. It'll take a concrete proposal to convince me to change the layout. -- Cheers =8-} Mike Friede, Völkerverständigung und überhaupt blabla