From: Marcin Borkowski <mbork@mbork.pl>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: help-gnu-emacs@gnu.org
Subject: Re: `pp-eval-expression' behaves strangely under lexical binding
Date: Sun, 17 Apr 2016 19:42:18 +0200 [thread overview]
Message-ID: <87ega4t9mt.fsf@mbork.pl> (raw)
In-Reply-To: <jwvmvosb4do.fsf-monnier+gmane.emacs.help@gnu.org>
On 2016-04-17, at 16:15, Stefan Monnier <monnier@iro.umontreal.ca> 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").
Stefan, thanks for your answer. I'm not entirely sure I understand it,
but I'm going to give it some thinking, and if it is still unclear, I'll
get back here.
Best,
--
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University
next prev parent reply other threads:[~2016-04-17 17:42 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 [this message]
2016-04-18 15:07 ` Andy Moreton
2016-04-18 15:58 ` Stefan Monnier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87ega4t9mt.fsf@mbork.pl \
--to=mbork@mbork.pl \
--cc=help-gnu-emacs@gnu.org \
--cc=monnier@iro.umontreal.ca \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.