From: Paul Brannan <pbrannan@...>
Date: 2003-08-20T03:55:14+09:00
Subject: Re: $VERBOSE=true returns warnings from standard library

On Wed, Aug 20, 2003 at 12:12:47AM +0900, Dave Thomas wrote:
> However, there are also times where the developer knows more than the 
> interpreter. For those cases, how about a standard facility to allow 
> warnings to be disabled for a chunk of code (a la Perl)?

What would it mean for warnings to be disabled for a chunk of code?
Would this happen at compile-time or at run-time?  If I enable warnings
for a chunk of code, then would warnings be on or off for code that this
chunk happens to call?

I'd really like to see a pluggable mechanism for capturing warnings
(instead of sending all warnings to stderr).  It would be really nifty
if I could write:

  def warn(warning)
    if warning.level < 10 or
       warning.file == "a_file_I_want_to_ignore_warnings_in.rb" then
      # ignore this warning
    else
      $stderr.puts(warning)
      send_email_to_me_about(warning)
    end
  end

  class Foo
    def foo; end
    def foo; end # doesn't print anything since the warning's level is
                 # too low
  end

Paul