From: David De La Harpe Golden <david@harpegolden.net>
To: MON KEY <monkey@sandpframing.com>
Cc: 7083@debbugs.gnu.org, 7088@debbugs.gnu.org
Subject: bug#7088: `copy-tree' of a vector copy sharing structure.with original
Date: Thu, 23 Sep 2010 21:41:30 +0100 [thread overview]
Message-ID: <4C9BBB7A.2060004@harpegolden.net> (raw)
In-Reply-To: <AANLkTikYxb5Nk_08z_qN4faUeFPoOkz18cN04A2U5AHW@mail.gmail.com>
On 23/09/10 06:28, MON KEY wrote:
> (let ((orig [[a b] [c d] [e f] [g h]])
> new-cp)
> (setq new-cp (copy-tree orig))
Some people would have at least considered a quick C-h f copy-tree
before filing a bug?
You're missing the VECP arg to emacs lisp copy-tree.
Without that, emacs lisp copy-tree is, much like common lisp copy-tree,
documented to copy trees of _conses_. Conses do of course look pretty
like 2 element vectors, but they are a separate datatype in emacs lisp.
ELISP> (let ((orig [[a b] [c d] [e f] [g h]])
new-cp)
(setq new-cp (copy-tree orig t))
(string-equal (aref (prog1 orig
(aset new-cp 0 "bubba"))
0)
"bubba"))
*** Eval error *** Wrong type argument: stringp, [a b]
next prev parent reply other threads:[~2010-09-23 20:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-23 5:28 bug#7088: `copy-tree' of a vector copy sharing structure.with original MON KEY
2010-09-23 8:47 ` bug#7083: " Andreas Schwab
2010-09-23 20:41 ` David De La Harpe Golden [this message]
2010-09-24 5:19 ` MON KEY
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