From: Davis Herring <herring@lanl.gov>
To: Nic Ferrier <nferrier@ferrier.me.uk>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: Re: non-local exits with signal and condition-case
Date: Mon, 03 Jun 2013 09:54:24 -0600 [thread overview]
Message-ID: <51ACBC30.70209@lanl.gov> (raw)
In-Reply-To: <87ehckjiyr.fsf@ferrier.me.uk>
> In this example, I could be in trouble is make-page ever returns
> anything. So I could throw a cons with a type indicator (say, :redirect)
> and check for the type in the when. But that is a lot more work.
In this case, why not just have make-page return nil if it sent the page
and the redirect target otherwise? If it had some other return value
that you wanted to ignore in this case, on the other hand, you can just
put "nil" as an additional form in the catch. (Granted: these functions
are unusual in that they are side-effect-only.)
Davis
--
This product is sold by volume, not by mass. If it appears too dense or
too sparse, it is because mass-energy conversion has occurred during
shipping.
prev parent reply other threads:[~2013-06-03 15:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-02 16:24 non-local exits with signal and condition-case Nic Ferrier
2013-06-02 18:52 ` Stefan Monnier
2013-06-02 21:33 ` Nic Ferrier
2013-06-03 0:02 ` Stefan Monnier
2013-06-03 15:54 ` Davis Herring [this message]
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