Interesting behaviour

When I does following thing on irb console

def foo
  1
end

foo   ===>o/p 1
foo.foo   ===>o/p 1
foo.foo.foo   ===>o/p 1
foo.foo.foo.foo.foo.foo.foo.foo.foo.foo.foo.foo.foo.foo.foo............foo
===>o/p 1

I got above o/p


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But when I done same thing in Scite editor. I got error

def foo
 1
end

p foo
p foo.foo   =>o/p private method `foo' called for 1:Fixnum (NoMethodError)


How ??


thanks
DG