From: Robert Klemme <bob.news@...>
Date: 2003-07-30T11:27:29+09:00
Subject: Re: Warnings?


"Yukihiro Matsumoto" <matz@ruby-lang.org> schrieb im Newsbeitrag
news:1059507455.553355.1938.nullmailer@picachu.netlab.jp...
> Hi,
>
> In message "Re: Warnings?"
>     on 03/07/30, Michael Davis <mdavis@sevasoftware.com> writes:
>
> |How about a way to trap warnings similar to rescue Exception so we can
trap and suppress certain expected warnings?
>
> Since warning is a mere message, not exit like exceptions, it is more
> difficult to catch.  You can suppress warning messages by redirecting
> $stderr temporarily (although it's not thread safe).

The approach most reasonable is IMHO to provide a warning handler setting
mechanism similarly to the trace handler.  Only I don't know how much
runtime overhead that'd be.  The handler block could receive something like
|level, code, message, sender| and treat it appropriately.  -W0, -W1 etc.
would then change the block's filtering according to level.

Or should we use a mature logging feature?  Maybe
http://sourceforge.net/projects/log4r/ or a smaller solution.  Matz, what do
you think?

Regards

    robert