[Zope] empty lines property value

[Dieter Maurer]

zope@concision.com writes:
 > I just noticed that a property of type "lines", when created via the
 > management interface (if not by other means as well) has as its
 > initial value ['']. I would have expected an empty "lines" property to
 > have the value []. Does anyone know the rationale behind this? Or
 > should it be considered a bug? I see this behavior in both of the
 > versions of Zope that we run locally -- 2.2.4 and 2.3.1b1.
It's an implementation artifact:

  Python's "string.split('','\n')" returns "['']", as is probably
  correct as "string.split('a','\n')" should return "['a']".

Dieter