From: Andreas Schwab <schwab@suse.de>
To: Leo Liu <sdl.web@gmail.com>
Cc: 18555@debbugs.gnu.org
Subject: bug#18555: 24.4.50; butlast and nbutlast doesn't handle improper lists
Date: Thu, 25 Sep 2014 09:21:50 +0200 [thread overview]
Message-ID: <mvmtx3wkvw1.fsf@hawking.suse.de> (raw)
In-Reply-To: <m3ppeke44i.fsf@gmail.com> (Leo Liu's message of "Thu, 25 Sep 2014 12:05:49 +0800")
Leo Liu <sdl.web@gmail.com> writes:
> (nbutlast '(1 2 . 3))
>
> throws an error due to `length' which can be fixed
> by using safe-length instead.
>
> (butlast '(1 2 . 3))
>
> still throws an error due to copy-sequence not taking
> improper list.
>
> What is the right thing to do?
Don't do that then.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
next prev parent reply other threads:[~2014-09-25 7:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-25 4:05 bug#18555: 24.4.50; butlast and nbutlast doesn't handle improper lists Leo Liu
2014-09-25 7:21 ` Andreas Schwab [this message]
2019-09-30 2:39 ` Stefan Kangas
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