# File lib/mail/parsers/rfc2822_obsolete.rb, line 2551 def _nt_obs_id_left start_index = index if node_cache[:obs_id_left].has_key?(index) cached = node_cache[:obs_id_left][index] @index = cached.interval.end if cached return cached end r0 = _nt_local_part node_cache[:obs_id_left][start_index] = r0 r0 end