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Subject: |
24.1.50; lexical binding inconsistencies |
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Date: |
Mon, 16 Apr 2012 22:03:30 +0200 |
Hi,
I have an elisp file with this content:
; Test -*- lexical-binding: t -*-
(defun test1 (arg)
(interactive "i")
(funcall (lambda () arg)))
(defun test2 (arg)
(interactive "i")
((lambda () arg)))
;; (test1 nil)
;; (test2 nil)
I visit the file and do M-x eval-buffer. Then I do the following:
1(a) Put point after (test1 nil) and hit C-x C-e: nil
1(b) M-x test1: nil
2(a) Put point after (test2 nil) and hit C-x C-e
If I had loaded my .emacs before, I get nil
With emacs -Q, I get: Lisp error: (void-variable arg)
2(b) M-x test2: Lisp error: (void-variable arg)
Now, byte compile the file, and load the compiled code. Now, repeat
the above four tests. You always get nil, and no error.
That's strange - shouldn't the result always be nil? If not, this
(surprising) behavior should be documented in the manual.
I've experimented a lot, and found that the results for 2(a) are not
always the same.
OTOH, the compiled code always works as expected (result nil).
Regards,
Michael.
In GNU Emacs 24.1.50.1 (i486-pc-linux-gnu, GTK+ Version 3.2.3)
of 2012-04-10 on zelenka, modified by Debian
(emacs-snapshot package, version 2:20120410-1)
Windowing system distributor `The X.Org Foundation', version 11.0.11104000
Configured using:
`configure '--build' 'i486-linux-gnu' '--host' 'i486-linux-gnu'
'--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
'--localstatedir=/var' '--infodir=/usr/share/info'
'--mandir=/usr/share/man' '--with-pop=yes'
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/24.1.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.1.50/site-lisp:/usr/share/emacs/site-lisp'
'--without-compress-info' '--with-crt-dir=/usr/lib/i386-linux-gnu/'
'--with-x=yes' '--with-x-toolkit=gtk3' '--with-imagemagick=yes'
'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu'
'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2''
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#11258: 24.1.50; lexical binding inconsistencies |
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Date: |
Wed, 28 Aug 2013 14:28:29 -0400 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
> Testing my recipe today with (emacs-version) => "GNU Emacs 24.3.50.1
> (x86_64-pc-linux-gnu, GTK+ Version 3.4.2)\n of 2013-04-10 on dex,
> modified by Debian", I see that the behavior is still the same.
I installed the trivial patch below, which should fix it. Sorry for
that ridiculous delay.
Stefan
=== modified file 'src/eval.c'
--- src/eval.c 2013-08-12 07:12:07 +0000
+++ src/eval.c 2013-08-28 18:24:19 +0000
@@ -2149,6 +2149,8 @@
if (SYMBOLP (fun) && !NILP (fun)
&& (fun = XSYMBOL (fun)->function, SYMBOLP (fun)))
fun = indirect_function (fun);
+ else
+ fun = Ffunction (Fcons (fun, Qnil));
if (SUBRP (fun))
{
--- End Message ---