You want the file name plus the class name plus dot plus the method?  
Interesting totally undocumented feature.  :)

On Wednesday 26 February 2003 02:03 am, NAKAMURA, Hiroshi wrote:
> Hi,
>
> > From: Seth Kurtzberg [mailto:seth / cql.com]
> > Sent: Wednesday, February 26, 2003 5:26 PM
> >
> > It accepts it.  But nothing happens (that is, it doesn't
> > actually set a
> > breakpoint at the desired location).  With 1.8, at least.
>
> nakahiro@RUBY ~/test
> $ cat foo.rb
> module Foo
>   class Bar
>     def self.baz; end
>   end
> end
>
> Foo::Bar.baz
>
> nakahiro@RUBY ~/test
> $ ruby -rdebug foo.rb
> Debug.rb
> Emacs support available.
>
> foo.rb:1:module Foo
> (rdb:1) break Foo::Bar:baz
> Set breakpoint 1 at Foo::Bar:baz
> (rdb:1) cont
> Breakpoint 1, baz at Foo::Bar:baz
> foo.rb:3:    def self.baz; end
> (rdb:1) finish
>
> nakahiro@RUBY ~/test
> $
>
> You may be setting bp with 'Bar:baz', not 'Foo::Bar:baz'?
>
> Regards,
> // NaHi

-- 
Seth Kurtzberg
M. I. S. Corp.
480-661-1849
seth / cql.com