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Re: Macro vs Function

From: Herbert Euler
Subject: Re: Macro vs Function
Date: Thu, 13 Apr 2006 00:14:39 +0800

Now I think I've understood how macro works.  A macro is
equivalent to a "function" described as follows:

1. This function has the same body as the macro, and when
  calling this function, substitute all arguments with quoted
2. Then the body of the function is evaluated, and a s-exp
  is returned.  (`, \, and ,@ are treated as normal functions
  here.)  All parameters are normal variables that have value
  of the orignal arguments.
3. Next, evaluated this s-exp.

This will cause the same effect as the macro.

Thank you, David Kastrup, Andreas Schwab, and Stuart D.
Herring.  This is I think the biggest step I made after studying
(Emacs) Lisp.

Guanpeng Xu

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