GNU bug report logs - #27674
26.0.50; cl-progv: strange scoping due to implementation

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Message #14 received at 27674 <at> debbugs.gnu.org (full text, mbox):

From: npostavs <at> users.sourceforge.net
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 27674 <at> debbugs.gnu.org
Subject: Re: bug#27674: 26.0.50;
 cl-progv: strange scoping due to implementation
Date: Wed, 12 Jul 2017 20:50:35 -0400

Michael Heerdegen <michael_heerdegen <at> web.de> writes:

> Sure, but that's something different.  I didn't want a special variable
> in my example.  The doc of `cl-progv' doesn't mention that the symbols
> must correspond to special variables.  Do I miss something?

Oh, you expect cl-progv to bind lexically?  I interpret the first
sentence in its docstring to mean that cl-progv does dynamic binding,
not lexical binding.  Note also, that if it did bind lexically, we would
not be able to compile the body form.

(defmacro cl-progv (symbols values &rest body)
  "Bind SYMBOLS to VALUES dynamically in BODY.
                          ^^^^^^^^^^^

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