RE: member returns list (was: Re: To `boundp' or not to `boundp'?)

[Drew Adams]

> > If no such member can be found then it returns nil,
> > which means that it can also function as a simple
> > membership test.
> 
> OK then, what does it do when it doesn't function
> like that?

I don't understand the question.  It always functions
the same way.  Whether code uses it only to test membership
or to access the first tail that corresponds is up to that
code.  But `member' behaves ("functions") the same.