class RDoc::RI::Driver

def expand_class klass
  klass.split('::').inject '' do |expanded, klass_part|
    expanded << '::' unless expanded.empty?
    short = expanded << klass_part
    subset = classes.keys.select do |klass_name|
      klass_name =~ /^#{expanded}[^:]*$/
    end
    abbrevs = Abbrev.abbrev subset
    expanded = abbrevs[short]
    raise NotFoundError, short unless expanded
    expanded.dup
  end
end