From: ludo@gnu.org (Ludovic Courtès)
To: guile-devel@gnu.org
Subject: Re: syntax-local-binding
Date: Sun, 22 Jan 2012 01:03:07 +0100 [thread overview]
Message-ID: <87mx9gd2o4.fsf@gnu.org> (raw)
In-Reply-To: 87obtyuj4k.fsf@netris.org
Hi,
Mark H Weaver <mhw@netris.org> skribis:
> Because it breaks your nice equivalence. For example:
>
> (let ((x 1))
> (syntax-local-binding #'x))
>
> is not equivalent to:
>
> (let ((x 1))
> (local-eval '(syntax-local-binding #'x) (the-environment)))
>
> Put another way: if anyone uses `syntax-local-binding' to distinguish
> lexical variables from macros in some clever macro of theirs, this means
> that `local-eval' is now buggy with regard to their clever macro.
What about recommending against “clever macros” that use
‘syntax-local-binding’, or documenting the limitation in how
‘local-eval’ and ‘syntax-local-binding’ would interact?
After all, the point of ‘local-eval’ is to provide a compatibility later
with 1.8, and ‘syntax-local-binding’ didn’t exist there.
Thanks,
Ludo’.
next prev parent reply other threads:[~2012-01-22 0:03 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-15 17:00 syntax-local-binding Andy Wingo
2012-01-15 17:22 ` syntax-local-binding Andy Wingo
2012-01-19 11:41 ` syntax-local-binding Andy Wingo
2012-01-20 20:26 ` syntax-local-binding Mark H Weaver
2012-01-20 21:23 ` syntax-local-binding Andy Wingo
2012-01-20 22:03 ` syntax-local-binding Mark H Weaver
2012-01-22 0:03 ` Ludovic Courtès [this message]
2012-01-23 16:05 ` syntax-local-binding Andy Wingo
2012-01-23 21:03 ` syntax-local-binding Mark H Weaver
2012-01-23 22:19 ` syntax-local-binding Andy Wingo
2012-01-24 2:11 ` syntax-local-binding Mark H Weaver
2012-01-24 11:42 ` syntax-local-binding Andy Wingo
2012-01-24 17:29 ` syntax-local-binding Noah Lavine
2012-01-24 10:30 ` syntax-local-binding Peter TB Brett
2012-01-24 10:38 ` syntax-local-binding David Kastrup
2012-01-24 11:26 ` syntax-local-binding Andy Wingo
2012-01-24 13:25 ` syntax-local-binding Mark H Weaver
2012-01-24 20:28 ` mark uniqueness (Was: Re: syntax-local-binding) Andy Wingo
2012-01-25 0:26 ` mark uniqueness Mark H Weaver
2012-01-25 9:02 ` Andy Wingo
2012-01-24 21:22 ` syntax-local-binding Andy Wingo
2012-01-25 2:30 ` syntax-local-binding Mark H Weaver
2012-01-25 7:49 ` syntax-local-binding Stefan Israelsson Tampe
2012-01-25 11:18 ` syntax-local-binding Andy Wingo
2012-01-25 13:18 ` syntax-local-binding Ludovic Courtès
2012-01-25 18:08 ` syntax-local-binding Mark H Weaver
2012-01-26 11:21 ` syntax-local-binding Andy Wingo
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