From: Tassilo Horn <tassilo@member.fsf.org>
To: "Pascal J. Bourguignon" <pjb@informatimago.com>
Cc: emacs-devel@gnu.org
Subject: Re: problems with flet on last emacs
Date: Wed, 27 Jun 2012 17:55:45 +0200 [thread overview]
Message-ID: <87y5n87nr2.fsf@thinkpad.tsdh.de> (raw)
In-Reply-To: <87sjdgq0ig.fsf@kuiper.lan.informatimago.com> (Pascal J. Bourguignon's message of "Wed, 27 Jun 2012 16:42:47 +0200")
"Pascal J. Bourguignon" <pjb@informatimago.com> writes:
>> Two times `x', and those should probably gensyms, anyway...
>
> They probably are.
>
> Try:
>
> (eq 'x (first (first (second (macroexpand '(flet ((foo () 1))
> (foo)))))))
> and try:
>
> (let ((expansion (macroexpand '(flet ((foo () 1)) (foo)))))
> (eq (first (first (second expansion)))
> (first (second (second expansion)))))
Ok, both are nil, so x and x are different symbols. cl uses macroexp's
macro expansion macros at various places, and `macroexp-let2' uses
(make-symbol "x") to create new symbols. That's not making it easier to
understand...
Bye,
Tassilo
next prev parent reply other threads:[~2012-06-27 15:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-27 12:36 problems with flet on last emacs Thierry Volpiatto
2012-06-27 12:49 ` Pascal J. Bourguignon
2012-06-27 15:29 ` Stefan Monnier
2012-06-27 16:38 ` Thierry Volpiatto
2012-06-28 6:53 ` Ivan Kanis
2012-06-28 7:31 ` Thierry Volpiatto
2012-06-29 5:42 ` Ivan Kanis
2012-06-29 6:17 ` Thierry Volpiatto
2012-07-12 8:22 ` Ivan Kanis
2012-07-12 14:40 ` Stefan Monnier
2012-07-12 16:44 ` Ivan Kanis
2012-11-09 17:41 ` João Távora
2012-11-09 19:23 ` Stefan Monnier
2012-11-10 14:12 ` João Távora
2012-11-10 22:46 ` Stefan Monnier
2012-11-10 23:07 ` João Távora
2012-11-10 23:38 ` Stefan Monnier
2012-11-12 8:02 ` Andreas Röhler
2012-06-27 13:24 ` Tassilo Horn
2012-06-27 13:43 ` Thierry Volpiatto
2012-06-27 14:27 ` Thierry Volpiatto
2012-06-27 14:42 ` Pascal J. Bourguignon
2012-06-27 15:55 ` Tassilo Horn [this message]
2012-06-27 16:29 ` Pascal J. Bourguignon
2012-06-27 19:42 ` Tassilo Horn
2012-06-27 19:46 ` Pascal J. Bourguignon
2012-06-27 15:01 ` Andreas Schwab
2012-06-27 16:03 ` Tassilo Horn
2012-06-27 16:22 ` Glenn Morris
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