From: Stefan Monnier <monnier@iro.umontreal.ca>
To: rms@gnu.org
Cc: tomo@cx4a.org, emacs-devel@gnu.org
Subject: Re: Should lexical-let use let in the situation lexical-binding is t ?
Date: Tue, 18 Sep 2012 20:41:30 -0400 [thread overview]
Message-ID: <jwvwqzq3kxn.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <E1TE6V5-0007zD-0M@fencepost.gnu.org> (Richard Stallman's message of "Tue, 18 Sep 2012 18:42:39 -0400")
> As mentioned in my reply there, the two aren't quite compatible (because
> (lexical-let ((tab-width 4)) foo) will be a lexical binding, whereas
> (let ((tab-width 4)) foo) will be a dynamic binding)
> Is it really a sensible thing to make a lexical binding for a variable
> that is normally dynamic?
We don't need to answer this question, because the difference between
`let' and `lexical-let' in this respect is more likely to be accidental.
This said, there can be good reasons to force a lexical binding, when
you fear that the code might be run in a context where the variable
might happen to be defvar'd.
Stefan
next prev parent reply other threads:[~2012-09-19 0:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-18 10:28 Should lexical-let use let in the situation lexical-binding is t ? Tomohiro Matsuyama
2012-09-18 12:44 ` Stefan Monnier
2012-09-18 22:42 ` Richard Stallman
2012-09-19 0:41 ` Stefan Monnier [this message]
2012-09-19 14:12 ` Richard Stallman
2012-09-19 19:01 ` Stefan Monnier
2012-09-19 22:06 ` Sam Steingold
2012-09-20 3:26 ` Stefan Monnier
2012-09-20 15:06 ` Sam Steingold
2012-09-19 1:20 ` Sam Steingold
2012-09-19 7:43 ` Nix
2012-09-21 18:18 ` Tomohiro Matsuyama
2012-09-21 21:18 ` Stefan Monnier
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