class String

def pathmap_explode

This String extension comes from Rake

Explode a path into individual components. Used by +pathmap+. 
def pathmap_explode
  head, tail = File.split(self)
  return [self] if head == self
  return [tail] if head == "." || tail == "/"
  return [head, tail] if head == "/"
  return head.pathmap_explode + [tail]
end