From: 7stud -- <bbxx789_05ss@...>
Date: 2011-04-09T03:37:48+09:00
Subject: Re: How to know whether current Fiber is the root Fiber?

How about catching the exception?

begin
  Fiber.yield
rescue FiberError
  puts "In root fiber..."
  puts "... so I am going to do something different here."
end

puts 'executing rest of program'

--output:--
In root fiber...
... so I am going to do something different here.
executing rest of program


Or, maybe do something like this:

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