scope.rb

#!/usr/bin/env ruby

def scope_while
  while true
    x = 1
    break
  end
  if x == 1
    # noop
  end
end

def scope_begin
  begin
    x = 1
  ensure
    # noop
  end
  if x == 1
    # noop
  end
end

def scope_loop
  loop do
    x = 1
    break
  end
  if x == 1
    # noop
  end
end

begin
  scope_while
rescue NameError
  puts :ng_while
end

begin
  scope_begin
rescue NameError
  puts :ng_begin
end

begin
  scope_loop
rescue NameError
  puts :ng_loop
end