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Paul Schlie wrote: >>> Personally I believe this is not a good idea, it's neither >>> syntactically consistent with scheme, nor visually expected: more >>> simply and consistently I would expect a #; comment to lexically >>> remove the expression/token it's been lexically prepended to, >>> nothing else. (including white-space). i.e.: >>> >>> ... (a #; b #;c) => (a b) Bradd wrote: >> Why? That's a token comment, not an s-expression comment, and it >> seems to serve no useful purpose (unless you intend to support >> token-pasting a la (a#; b) => (ab), which is IMO a very bad idea). > Huh? arguably a# is a symbol, followed by a ; comment rest of line. In your example above, it looked to me like you were using #; to remove the whitespace token. Based on your later comments, I now see that you're just talking about what it means to "prepend" a token -- i.e., that the sexp-comment is prepended to A in "#;a" but not in "#; a" where whitespace separates the two tokens. I see where you're coming from with that, but I disagree. I generally don't think it's a good idea to differentiate syntax based on whitespace like that. >> I do agree that it'd be somewhat more intuitive if #; worked more >> like QUOTE, with (#;#;foo bar) being equivalent to (#;(#;foo) bar) >> rather than (#;foo #;bar). However, this idea of commenting tokens >> instead of s-expressions seems like a very bad idea. > Huh? Sorry, I mashed three ideas together there: 1. I don't think it's a good idea for (#;#;a b c) => (c). 2. I would prefer (#;#;a b c) => (b c), analogous to (''a b c). 3. I don't like the suggestion that (#; a) => (a) because of the space. To defend my #1: While I understand the "comment out next sexp" explanation, my mind sees "A" as the next sexp for /both/ comment tokens in (#;#;a b c), thus making it equivalent to (#;a b c) => (b c). -- Bradd W. Szonye http://www.szonye.com/bradd