module Kernel

# File lib/tork/master.rb, line 94
def at_exit &block
  _d20922b4_a7b3_48d6_ad66_3d23e7310cf0 do
    # prevent SystemExit from inhibiting testing libraries' autorun helpers:
    # RSpec and MiniTest don't run any tests if $! is present during at_exit
    if $! and $!.kind_of? SystemExit
      begin
        cleared_exit = $!
        $! = nil # works in Ruby 1.8; raises NameError in Ruby 1.9
      rescue NameError
        # $! becomes nil after this rescue block ends in Ruby 1.9
      end
      raise NotImplementedError, 'tork/master: could not clear $!' if $!
    end

    block.call

    # if calling the block didn't raise any exceptions, then restore the
    # SystemExit exception that we cleared away above (if there was any)
    raise cleared_exit if cleared_exit
  end
end