From: Noam Postavsky <npostavs@users.sourceforge.net>
To: Paul Pogonyshev <pogonyshev@gmail.com>
Cc: Emacs developers <emacs-devel@gnu.org>
Subject: Re: generator documentation improvement
Date: Wed, 8 Mar 2017 16:06:28 -0500 [thread overview]
Message-ID: <CAM-tV-93N+zqnZe7vrUD+c=yOR8honEH_es9AEbVQ-3ttofzVw@mail.gmail.com> (raw)
In-Reply-To: <CAG7Bpao-p8ZYGzT6NH3v9i+UJRjY3ccM-si2fkjEUzuPNe4=ng@mail.gmail.com>
On Wed, Mar 8, 2017 at 3:47 PM, Paul Pogonyshev <pogonyshev@gmail.com> wrote:
>
> If you evaluate the last form, you'll see "B" and "C" printed twice
> because `let' for dynamic variable is internally implemented with
> something similar to `unwind-protect'. However, when documentation
> doesn't mention it, that's very hard to pinpoint.
Is this Bug#25965 "iter-lambda may evaluate certain forms twice"?
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25965
next prev parent reply other threads:[~2017-03-08 21:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-08 20:47 generator documentation improvement Paul Pogonyshev
2017-03-08 21:06 ` Noam Postavsky [this message]
2017-03-08 21:28 ` Andreas Politz
2017-03-11 21:10 ` Paul Pogonyshev
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