Re: To `boundp' or not to `boundp'?

[Barry Margolin]

In article <mailman.410.1441212753.19560.help-gnu-emacs@gnu.org>,
 Michael Heerdegen <michael_heerdegen@web.de> wrote:

> Alexander Shukaev <haroogan@gmail.com> writes:
> 
> > I also see
> >
> > > Note that if `lexical-binding' is in effect, this refers to the
> > > global value outside of any lexical scope.
> >
> > in the documentation of `boundp'.  Isn't it a big difference?
> 
> That's a difference.  But testing lexical variables for whether they are
> bound is a rare use case (is it one at all?).  I mean, when you are
> interested in the binding of a variable that might not be bound
> (defined), that variable will typically be special, or not bound at all,
> i.e., not lexically bound in any case.

In Common Lisp it's not even possible for a lexically-bound variable to 
be unbound. I'm not sure whether Emacs Lisp has a way to do it or not.

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
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