On Thu, Apr 27, 2017 at 12:55:12PM -0400, John Cowan wrote: > On Thu, Apr 27, 2017 at 12:14 PM, Peter Bex <pe...@more-magic.net> wrote: > > Now, the spec disallows this (I think..), > > Yes, it does: begin-with-defines is allowed only at top level. It should > be replaced by (let () (define ...) . body) instead. In Algol or C terms, > begin is a compound statement, let is a block.
True, but "it is an error" to put definitions inside a begin that's not at toplevel, so we're free to do whatever we want. Allowing definitions inside begin is quite a useful extension of the standard, especially when it comes to macros that introduce multiple definitions; otherwise, those macros could only be used at toplevel. Cheers, Peter
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