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Re: macroexpand and progn

From: Stefan Monnier
Subject: Re: macroexpand and progn
Date: Sun, 28 Sep 2014 12:32:42 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

> In other words it looks like it's not possible to macro define `progn'.

Quite likely, indeed.  I'd expect trouble when trying to define macros
for any of the special forms.

> Does anyone know if this is so and if so why?

Because they're called *special*-forms?  ;-)
To make it work reliably, you'd probably need hygienic macros or packages.


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