class FakeFS::Pathname

def cleanpath_aggressive


Nothing more, nothing less.
"." and ".." entries.
Clean the path simply by resolving and removing excess
def cleanpath_aggressive
  path = @path
  names = []
  pre = path
  while (r = chop_basename(pre))
    pre, base = r
    case base
    when '.'
      # ignored
    when '..'
      names.unshift base
    else
      if names[0] == '..'
        names.shift
      else
        names.unshift base
      end
    end
  end
  if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
    names.shift while names[0] == '..'
  end
  self.class.new(prepend_prefix(pre, File.join(*names)))
end