# File lib/mail/parsers/rfc2822.rb, line 2631 def _nt_display_name start_index = index if node_cache[:display_name].has_key?(index) cached = node_cache[:display_name][index] if cached cached = SyntaxNode.new(input, index...(index + 1)) if cached == true @index = cached.interval.end end return cached end r0 = _nt_phrase node_cache[:display_name][start_index] = r0 r0 end