GNU bug report logs - #12049
24.1.50.1; lisp_file_lexically_bound_p does not handle local variables list

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Package: emacs;

Reported by: Christopher Schmidt <christopher <at> ch.ristopher.com>

Date: Wed, 25 Jul 2012 23:53:02 UTC

Severity: wishlist

Tags: wontfix

Found in version 24.1.50.1

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#12049; Package emacs. (Wed, 25 Jul 2012 23:53:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Christopher Schmidt <christopher <at> ch.ristopher.com>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Wed, 25 Jul 2012 23:53:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Christopher Schmidt <christopher <at> ch.ristopher.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.1.50.1;
	lisp_file_lexically_bound_p does not handle local variables list
Date: Thu, 26 Jul 2012 00:45:43 +0100 (BST)

lisp_file_lexically_bound_p does not handle local variables lists.  This
will make eval-buffer ignore the file-local value of lexical-binding if
it is specified in such a list.

Recipe: emacs -q, C-x b *scratch* RET, insert the following snippet, M-x
eval-buffer RET, M-: (rms) RET.

    (defun rms ()
      (let ((emacs 'vim-tiny))
        (lambda ())))

    ;; Local Variables:
    ;; lexical-binding: t
    ;; End:

        Christopher
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#12049; Package emacs. (Thu, 26 Jul 2012 01:48:02 GMT) Full text and rfc822 format available.

Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#12049: 24.1.50.1;
	lisp_file_lexically_bound_p does not handle local variables list
Date: Wed, 25 Jul 2012 21:40:08 -0400

> lisp_file_lexically_bound_p does not handle local variables lists.

That's a known limitation, which we decided to keep since supporting
lexical-binding settings at the end of the file would force the
interpreter to read the whole file before starting interpreting.


        Stefan
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#12049; Package emacs. (Thu, 26 Jul 2012 01:58:01 GMT) Full text and rfc822 format available.

Message #11 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Christopher Schmidt <christopher <at> ch.ristopher.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#12049: 24.1.50.1;
	lisp_file_lexically_bound_p does not handle local variables list
Date: Thu, 26 Jul 2012 02:50:59 +0100 (BST)

Stefan Monnier <monnier <at> IRO.UMontreal.CA> writes:
>> lisp_file_lexically_bound_p does not handle local variables lists.
>
> That's a known limitation, which we decided to keep since supporting
> lexical-binding settings at the end of the file would force the
> interpreter to read the whole file before starting interpreting.

Thanks for you answer.  Is this limitation mentioned in the
documentation?  If so, in which node?

        Christopher
Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#12049; Package emacs. (Sun, 29 Jul 2012 22:58:02 GMT) Full text and rfc822 format available.

Message #14 received at 12049 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: 12049 <at> debbugs.gnu.org
Subject: Re: bug#12049: 24.1.50.1;
	lisp_file_lexically_bound_p does not handle local variables list
Date: Sun, 29 Jul 2012 18:49:59 -0400

Christopher Schmidt wrote:

>> That's a known limitation, which we decided to keep since supporting
>> lexical-binding settings at the end of the file would force the
>> interpreter to read the whole file before starting interpreting.
>
> Thanks for you answer.  Is this limitation mentioned in the
> documentation?  If so, in which node?

In the doc string of the variable lexical-binding, in the NEWS file, and
in the "Using Lexical Binding" node of the elisp manual.
Severity set to 'wishlist' from 'normal' Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Sun, 29 Jul 2012 22:58:02 GMT) Full text and rfc822 format available.
Added tag(s) wontfix. Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Sun, 29 Jul 2012 22:58:02 GMT) Full text and rfc822 format available.
bug closed, send any further explanations to 12049 <at> debbugs.gnu.org and Christopher Schmidt <christopher <at> ch.ristopher.com> Request was from Glenn Morris <rgm <at> gnu.org> to control <at> debbugs.gnu.org. (Thu, 27 Sep 2012 21:16:01 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Fri, 26 Oct 2012 11:24:03 GMT) Full text and rfc822 format available.
This bug report was last modified 12 years and 242 days ago.

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