nope = lambda do |bool|
	if @s1 == nil then return @s1 = bool end
	return @s2 = bool
end

def _nope(bool)
	if @s1 == nil then return @s1 = bool end
	return @s2 = bool
end

@s1, @s2 = nil, nil
nope.call(true) ? false : true
nope.call (true) ? false : true
# this assertion passes OK
if @s1 != @s2 then raise "nope.call" end

@s1, @s2 = nil, nil
_nope(true) ? false : true
_nope (true) ? false : true
# but this assertion fails!
if @s1 != @s2 then raise "_nope" end

=begin
$ ruby ruby.rb 
ruby.rb:13: warning: don't put space before argument parentheses
ruby.rb:19: _nope (RuntimeError)
=end