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Re: Strange change in backquote expansion


From: Stefan Monnier
Subject: Re: Strange change in backquote expansion
Date: Mon, 20 Aug 2007 00:16:26 -0400
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1.50 (gnu/linux)

> I'm not quite sure what to think about it, but something changed in
> expansion of macro expansion, more precisely in expansion of
> backquotes:

> Old Emacs (including 22.0):
> (defmacro debug-macro-test (arg)
>   ``(,,@(list (list arg))))

> (macroexpand '(debug-macro-test foo))
> => (list (foo))

> Current HEAD:
> (macroexpand '(debug-macro-test foo))
> => (list ((foo)))

> note the extra parenthesis.

I made the change.  Will look into it, thanks,


        Stefan




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