* bug#24316: Mistake in GNU Emacs Lisp Reference Manual, Section 5.3
@ 2016-08-26 20:53 Eric Wayman
2016-08-26 21:04 ` Ken Brown
0 siblings, 1 reply; 3+ messages in thread
From: Eric Wayman @ 2016-08-26 20:53 UTC (permalink / raw)
To: 24316
With respect to
-- Function: safe-length list
the text says
"If LIST is not ‘nil’ or a cons cell, ‘safe-length’ returns 0."
But running
(safe-length nil)
gives 0.
Best regards,
Eric Alan Wayman
^ permalink raw reply [flat|nested] 3+ messages in thread* bug#24316: Mistake in GNU Emacs Lisp Reference Manual, Section 5.3
2016-08-26 20:53 bug#24316: Mistake in GNU Emacs Lisp Reference Manual, Section 5.3 Eric Wayman
@ 2016-08-26 21:04 ` Ken Brown
[not found] ` <20160826170517.71887c34@debian>
0 siblings, 1 reply; 3+ messages in thread
From: Ken Brown @ 2016-08-26 21:04 UTC (permalink / raw)
To: Eric Wayman, 24316
On 8/26/2016 4:53 PM, Eric Wayman wrote:
> With respect to
>
> -- Function: safe-length list
>
> the text says
>
> "If LIST is not ‘nil’ or a cons cell, ‘safe-length’ returns 0."
>
> But running
>
> (safe-length nil)
>
> gives 0.
That case is covered by the first paragraph of the documentation, which
you didn't quote:
This function returns the length of LIST, with no risk of either an
error or an infinite loop. It generally returns the number of
distinct cons cells in the list. However, for circular lists, the
value is just an upper bound; it is often too large.
Ken
^ permalink raw reply [flat|nested] 3+ messages in thread
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2016-08-26 20:53 bug#24316: Mistake in GNU Emacs Lisp Reference Manual, Section 5.3 Eric Wayman
2016-08-26 21:04 ` Ken Brown
[not found] ` <20160826170517.71887c34@debian>
2016-08-26 22:20 ` Ken Brown
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