Subject: bug#10969: 24.0.94; Annoying warning for `pop'

From: Lars Magne Ingebrigtsen <[email-masked]>
Date: Fri, 09 Mar 2012 09:46:58 +0100

Thierry Volpiatto <[email-masked]> writes:

> Sorry, as always I don't understand your answer.

:-)

> (let ((lst '("a" "b" "c")))
>   (pop (nthcdr 1 lst)))
> =>"b"
>
> What make any sense?

It depends on what `pop' you're using.  With the cl.el pop, you get this:

(setq lst '("a" "b" "c"))
=> ("a" "b" "c")
(pop (nthcdr 1 lst))
=> "b"
lst
=> ("a" "c")

With the Emacs Lisp `pop', you get this:

(setq lst '("a" "b" "c"))
=> ("a" "b" "c")
(pop (nthcdr 1 lst))
Debugger entered--Lisp error: (wrong-type-argument symbolp (nthcdr 1 lst))

-- 
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  bloggy blog http://lars.ingebrigtsen.no/