# File lib/mail/parsers/rfc2822.rb, line 4019 def _nt_return start_index = index if node_cache[:return].has_key?(index) cached = node_cache[:return][index] if cached cached = SyntaxNode.new(input, index...(index + 1)) if cached == true @index = cached.interval.end end return cached end i0, s0 = index, [] r1 = _nt_path s0 << r1 if r1 r2 = _nt_CRLF s0 << r2 end if s0.last r0 = instantiate_node(SyntaxNode,input, i0...index, s0) r0.extend(Return0) else @index = i0 r0 = nil end node_cache[:return][start_index] = r0 r0 end