From: Le Wang <l26wang@gmail.com>
To: 9469@debbugs.gnu.org
Subject: bug#9469: buffer-local variables seem to remember previous values
Date: Sun, 11 Sep 2011 01:07:21 +0800 [thread overview]
Message-ID: <CAM=K+ipbSAqy1PLo=qHRb_SqtKU+M6B1RRDv_LPym3P1ir2W4Q@mail.gmail.com> (raw)
I've reproed in both Emacs 23.3 and bzr build from a few days ago both
on windows.
Steps:
1. emacs -Q
2. eval this region:
(setq buf-a (create-file-buffer "a"))
(setq foo nil)
(make-variable-buffer-local 'foo)
(defun test1 ()
(interactive)
(let (alist)
(push '(:var . 0) alist)
(with-current-buffer buf-a
(setq foo alist))))
(defun test2 ()
(interactive)
(with-current-buffer buf-a
(setcdr (assq :var foo) 20)))
(defun show ()
(interactive)
(with-current-buffer buf-a
(format " ; foo in 'a' is %s" foo)))
(defun test3 ()
(interactive)
(let (alist)
(push `(:var . ,(+ 0)) alist)
(with-current-buffer buf-a
(setq foo alist))))
(test1)
(test2)
(test1)
(insert (show))
(test3)
(insert (show))
Note results on both `insert' lines should be identical but the first
insert some how remembers a previous value. I find it surprising that
no one has ever come across this before.
--
Le
next reply other threads:[~2011-09-10 17:07 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-10 17:07 Le Wang [this message]
2011-09-10 17:44 ` bug#9469: buffer-local variables seem to remember previous values Drew Adams
2011-09-11 16:57 ` Le Wang
2011-09-11 17:56 ` Drew Adams
2011-09-11 18:08 ` Andreas Schwab
2011-09-11 18:49 ` Le Wang
2011-09-11 18:54 ` Lars Magne Ingebrigtsen
2011-09-11 19:18 ` Le Wang
2011-09-11 19:54 ` Lars Magne Ingebrigtsen
2011-09-12 4:39 ` Le Wang
2011-09-12 7:57 ` Andreas Schwab
2011-09-12 8:23 ` Le Wang
2011-09-12 8:35 ` Andreas Schwab
2011-09-12 14:30 ` Drew Adams
2011-09-12 15:06 ` Le Wang
2011-09-13 12:54 ` Stefan Monnier
2011-09-13 13:12 ` Le Wang
2011-09-13 15:00 ` Helmut Eller
2011-09-13 18:02 ` Johan Bockgård
2011-09-13 18:52 ` Drew Adams
2011-09-13 20:42 ` Helmut Eller
2011-09-15 18:14 ` Le Wang
2011-09-11 19:37 ` Helmut Eller
2011-09-11 19:46 ` Andreas Schwab
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