From: Andy Wingo <wingo@pobox.com>
To: ludo@gnu.org (Ludovic Courtès)
Cc: guile-devel@gnu.org
Subject: Re: How can I tell guile to shut up? ;)
Date: Fri, 01 Jul 2011 10:03:23 +0200 [thread overview]
Message-ID: <874o36a0ms.fsf@pobox.com> (raw)
In-Reply-To: <87pqlvyp9p.fsf@gnu.org> ("Ludovic Courtès"'s message of "Thu, 30 Jun 2011 23:37:22 +0200")
Hi,
On Thu 30 Jun 2011 23:37, ludo@gnu.org (Ludovic Courtès) writes:
> Andy Wingo <wingo@pobox.com> skribis:
>
>> After some thinking, the base thing to do is just to add a warning port,
>> and make warnings (non-fatal informative messages) write to that port.
>> I have done this in the attached patches. Any objections?
>
> Ideally I’d preferred to keep current-warning-port in (system base
> message), but since it’s needed in boot-9, we may have to make it
> global. Or would the following work?
Yeah I tried to do that, but since it's needed in C (potentially quite
early, even before modules) and in Scheme I just bit the bullet and
added it to the default env.
> (define-module (guile-user)
> #:autoload (system base compile) (compile compile-file)
> + #:autoload (system base message) (%current-warning-port)
> #:filename #f)
Wouldn't work, because it's needed in (guile), not (guile-user).
> Besides, it would be great if ‘*current-warning-prefix*’ were handled
> consistently, too. All this could certainly be factorized in a Scheme/C
> function that takes care of using the right port and prefix.
It would, but then you're talking about standardizing a `warning'
function, and that's problematic, as some warnings will have source
locations and others will not, and we already have `warn' in the base
env which has a rest arg so it's not extensible with keywords, etc etc,
and system base message is really about compiler warnings (requiring
source location) and not all warnings, so it's a bit of a mess. (And
that's not to mention more general logging facilities, with levels and
categories and such.)
Note that it is also possible to prefix all output with soft ports.
Basically I appreciate the concerns but have not found a way to solve
the whole problem nicely, so I kept it simple. As it seems we agree on
the need for higher-level solutions based on a warning port accessible
in (guile) and C, I'm going to see about committing something along
these lines, and we can work on higher-level warning facilities later.
Regards,
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2011-07-01 8:03 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <99db88be1896528082d33a77ec4cadbe.squirrel@webmail.kapsi.fi>
2011-03-31 11:11 ` How can I tell guile to shut up? ;) Andy Wingo
2011-06-28 21:52 ` Andy Wingo
2011-06-30 1:24 ` Andreas Rottmann
2011-06-30 9:23 ` Andy Wingo
2011-06-30 21:27 ` Ludovic Courtès
2011-07-01 8:16 ` Andy Wingo
2011-07-01 13:04 ` Ludovic Courtès
2011-07-01 14:26 ` Andy Wingo
2011-07-04 13:24 ` Ludovic Courtès
2011-07-18 21:57 ` Fluids vs parameters: which API is better? Mark H Weaver
2011-07-19 8:19 ` Andy Wingo
2011-07-24 14:52 ` BT Templeton
2011-07-25 9:24 ` Ludovic Courtès
2011-07-25 14:21 ` Andy Wingo
2011-12-05 17:15 ` How can I tell guile to shut up? ;) Andy Wingo
2011-06-30 21:37 ` Ludovic Courtès
2011-07-01 8:03 ` Andy Wingo [this message]
2011-07-01 12:49 ` Ludovic Courtès
[not found] <502390579.3690191.1452334008441.JavaMail.yahoo.ref@mail.yahoo.com>
2016-01-09 10:06 ` Tobias Reithmaier
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