class IniParse::SectionCollection

IniParse::Lines::Section#merge!).
collection, the existing section is merged with the new one (see
once, if SectionCollection encounters a Section key already held in the
Since it is assumed that an INI document will only represent a section
instances contained within a Section.
A implementation of LineCollection used for storing (mostly) Option

def <<(line) 

def <<(line)
  if line.kind_of?(IniParse::Lines::Option) || (has_key?('__anonymous__') && (line.blank? || line.kind_of?(IniParse::Lines::Comment)))
    option = line
    line   = IniParse::Lines::AnonymousSection.new
    line.lines << option if option
  end
  if line.blank? || (! has_key?(line.key))
    super # Adding a new section, comment or blank line.
  else
    self[line.key].merge!(line)
  end
  self
end