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Re: AW: define-syntax

From: Clinton Ebadi
Subject: Re: AW: define-syntax
Date: Tue, 09 Dec 2008 17:28:44 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux)

"Pach Roman (DGS-EC/ESG3)" <address@hidden> 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.

                     How can you accept social supression                      
                      This weak state of mind in our time                      
                        I demand release from hypocrisy                        
                 I'd rather die than be held down, forced down                 

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