while true; 1; end

1 while true

break while true

next while true

return while true

foo :a, :b while bar?

while def self.foo a = tap do end; end; break; end

while class Foo a = tap do end; end; break; end

while class << self; tap do end; end; break; end

while class << self; a = tap do end; end; break; end

while def foo = bar do end; end

foo while bar in baz