Re: To be a list or not

["Lennart Borgman (gmail)" <lennart.borgman@gmail.com>]

Nick Roberts wrote:
>  > The first of these complaints that it wants a list, the second says is 
>  > is a list:
> 
> No it doesn't.
> 
>  >      ;; (length '(prop . val))
> 
> Debugger entered--Lisp error: (wrong-type-argument listp val)
>   length((prop . val))
> 
> So it's saying that val should be a list:
> 
> (length '(prop . (val)))
> 2
> 
> '(prop . (val))
> (prop val)
> 
>  >      ;; (listp '(prop . val))
> 
> 
>  -- Function: length sequence
>      This function returns the number of elements in SEQUENCE.  If
>      SEQUENCE is a dotted list, a `wrong-type-argument' error is
>      signaled.
> 
> I would start with the manual.


Eh, yes but (sequencep '(prop . val)) also returns t at least in my 
version of Emacs. But maybe this has been changed?