On Feb 23, 2009, at 4:01 PM, Jon Rafkind wrote:

> (define (+1 x) x)
readline::57: define: bad syntax (not an identifier for procedure name, and not a nested procedure form) at: 1 in: (define (1 x) x)

> (define (-1 x) x)
readline::75: define: bad syntax (not an identifier for procedure name, and not a nested procedure form) at: -1 in: (define (-1 x) x)

I guess +1 and -1 are parsed as numbers, which aren't included as identifiers. Is this fixable?

How about '1+' and '1-' instead?

Ryan

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