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From: Andy Moreton <andrewjmoreton@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: `pp-eval-expression' behaves strangely under lexical binding
Date: Mon, 18 Apr 2016 16:07:24 +0100	[thread overview]
Message-ID: <vz1k2jvnefn.fsf@gmail.com> (raw)
In-Reply-To: jwvmvosb4do.fsf-monnier+gmane.emacs.help@gnu.org

On Sun 17 Apr 2016, Stefan Monnier wrote:

>> But isn't my question still valid for `symbol-value'?
>
> No, whether it's implemented in C or in Lisp is irrelevant.  As soon as
> you put a symbol into a `quote`, it can't be a reference to a lexical
> variable any more because the compiler will treat it as data and data
> cannot refer to lexical variables, only to other data.
>
> Dynamically scoped variables are data, on the other hand (they're just
> a particular field of a symbol object, which is a kind of "struct").

Hi Stefan,

This short description is very helpful. Could you add some similar wording
to the elisp manual to help clarify usage of lexical binding ?

Thanks,

    AndyM




  parent reply	other threads:[~2016-04-18 15:07 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-17 13:43 `pp-eval-expression' behaves strangely under lexical binding Marcin Borkowski
2016-04-17 14:33 ` Marcin Borkowski
2016-04-17 16:15   ` Stefan Monnier
2016-04-17 17:42     ` Marcin Borkowski
2016-04-18 15:07     ` Andy Moreton [this message]
2016-04-18 15:58       ` Stefan Monnier

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