From mboxrd@z Thu Jan  1 00:00:00 1970
From: npostavs@users.sourceforge.net
Subject: bug#25132: 26.0.50; emacs hangs when loading org file with python
 source blocks
Date: Thu, 19 Jan 2017 22:18:46 -0500
Message-ID: <8737gewh9l.fsf@users.sourceforge.net>
References: <m2fulz4mjc.fsf@CIVIC-TV.local> <qwa8c75g0r.fsf@fencepost.gnu.org>
	<4aa23451-b6cd-88b0-369e-99f6fe5f2175@gmail.com>
	<m260murisv.fsf@block-party.net> <87y3yn2x4j.fsf@users.sourceforge.net>
	<87eg0e36un.fsf@users.sourceforge.net>
	<aa494e14-f35a-92c4-b954-c7ba8e4ab4b1@yandex.ru>
	<878tq6wo1p.fsf@users.sourceforge.net>
	<4674bf9b-38f0-8839-fadb-e9a719faf163@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:41448)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1cUPiI-0007XP-1U
	for emacs-orgmode@gnu.org; Thu, 19 Jan 2017 22:18:07 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <Debian-debbugs@debbugs.gnu.org>) id 1cUPiE-00084m-TK
	for emacs-orgmode@gnu.org; Thu, 19 Jan 2017 22:18:06 -0500
Sender: "Debbugs-submit" <debbugs-submit-bounces@debbugs.gnu.org>
Resent-Message-ID: <handler.25132.B25132.148488226621758@debbugs.gnu.org>
In-Reply-To: <4674bf9b-38f0-8839-fadb-e9a719faf163@gmail.com>
	("=?UTF-8?Q?Cl=C3=A9ment?=
	Pit--Claudel"'s message of "Thu, 19 Jan 2017 21:22:34 -0500")
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/emacs-orgmode/>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
	<mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
Sender: "Emacs-orgmode"
	<emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
To: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel <clement.pit@gmail.com>
Cc: David Dynerman <emperordali@block-party.net>, 25132@debbugs.gnu.org, Dmitry Gutov <dgutov@yandex.ru>

Cl=C3=A9ment Pit--Claudel <clement.pit@gmail.com> writes:

> On 2017-01-19 19:52, npostavs@users.sourceforge.net wrote:
>> because even after doing (make-variable-buffer-local 'var), (let
>> ((var 'foo))...) still makes a global binding.
>> `make-variable-buffer-local' only has effect for `setq', which I
>> think will hardly ever happen for `inhibit-modification-hooks'.
>
> On 2017-01-19 19:52, npostavs@users.sourceforge.net wrote:
>> because even after doing (make-variable-buffer-local 'var), (let
>> ((var 'foo))...) still makes a global binding.
>> `make-variable-buffer-local' only has effect for `setq', which I
>> think will hardly ever happen for `inhibit-modification-hooks'.
>
> Hi Noam,
>
> Can you explain a bit more? I'm not sure what you meant.
>
> I tried the following to illustrate your point:
>
> (defvar aa 0)
>
> (with-temp-buffer
>   (setq-local aa 1)
>   (let ((b1 (current-buffer)))
>     (with-temp-buffer
>       (let ((aa 2))
>         (message "In b2: %S" aa)
>         (with-current-buffer b1
>           (message "In b1: %S" aa))))))

My point was that the setq-local (or make-local-variable) is required
and that defvar-local (or make-variable-buffer-local) is not enough.

Compare:

(defvar-local bb 0)

(with-temp-buffer
  (let ((b1 (current-buffer)))
    (with-temp-buffer
      (let ((bb 2))
        (message "In b2: %S" bb)
        (with-current-buffer b1
          (message "In b1: %S" bb))))))