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Re: lexical-binding rationale?

From: Glenn Morris
Subject: Re: lexical-binding rationale?
Date: Thu, 12 Jan 2012 15:51:39 -0500
User-agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/)

Dave Abrahams 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's easy to use on a per-file basis, and in the majority of cases
allows the source to be transparently backwards compatible with
older/other versions of Emacs; so why not. Since it's a fait accompli,
discussing alternative ways it might have been done are only going to be
of academic interest.

I never did get an answer to my question about whether the setting HAS
to go in the first line of the file though. I still don't know.


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