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Re: lexical-binding rationale?

From: Dave Abrahams
Subject: Re: lexical-binding rationale?
Date: Fri, 13 Jan 2012 10:28:53 -0500
User-agent: Gnus/5.110018 (No Gnus v0.18) Emacs/24.0.92 (darwin)

on Fri Jan 13 2012, Richard Stallman <rms-AT-gnu.org> wrote:

>     I'm sure this has been discussed to death, so please feel free to
>     respond with a link, but... can anyone point me to a rationale for
>     dynamically altering such a fundamental language behavior on the basis
>     of a variable's value?
> It has to be specified somehow, so how would you suggest?

Maybe it's fine the way it is.  My impression was that it was going to
be affected by a local variable setting in the current buffer, but IIUC
it is a local variable setting in the buffer from which elisp is being
read (? this isn't entirely clear—and it should be—from the

If so, that gives me less of a cause for worry.  My initial reaction
when I heard about this was that we should have a set of
functions/macros for lexical binding, e.g. (lex-let ((a b)(c d)) (body))
but then, as I say, I may have misunderstood what was happening.

Dave Abrahams
BoostPro Computing

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