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Re: Is this a bug of Emacs-Lisp?
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From: |
Andreas Schwab |
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Subject: |
Re: Is this a bug of Emacs-Lisp? |
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Date: |
Fri, 17 Feb 2006 17:28:27 +0100 |
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User-agent: |
Gnus/5.110003 (No Gnus v0.3) Emacs/22.0.50 (gnu/linux) |
Zhang Wei <address@hidden> writes:
> (defun dummy () '(1 . 2))
>
> (dummy)
> => (1 . 2)
>
> (setcdr (dummy) 3)
>
> (dummy)
> => (1 . 3)
>
> Modify the return value of dummy changed it's defination. Is this
> a bug of Elisp? If it's not. How does this happen?
You can write FORTRAN in any language. :-) If you are destructively
modifying a constant, you'll get such results.
Andreas.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
- Is this a bug of Emacs-Lisp?, Zhang Wei, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, David Kastrup, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, Kevin Rodgers, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, Giorgos Keramidas, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?,
Andreas Schwab <=
- Re: Is this a bug of Emacs-Lisp?, Luc Teirlinck, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, Luc Teirlinck, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, Alan Mackenzie, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, Sascha Wilde, 2006/02/17
- Re: Is this a bug of Emacs-Lisp?, Richard M. Stallman, 2006/02/18