Re: AW: define-syntax

[Clinton Ebadi <clinton@unknownlamer.org>]

"Pach Roman (DGS-EC/ESG3)" <Roman.Pach@de.bosch.com> writes:

>>> test 2:
>>> -------
>>> (define-macro (my-macro-2 par1 par2 par3)
>>>   (string-concatenate (list par1 par2 par3)))

A macro defined with define-macro is merely a function that is run at
macroexpansion time and is expected to return a new form for the
compiler. The body of the macro can perform arbitrary computation, and
your macro is actually calling string-concatenate at macroexpansion time
rather than returning the form as you expected.

(define-macro (my-macro-2 par1 par2 par3)
   `(string-concatenate (list ,par1 ,par2, par3)))

Will do what you expect.

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