For your information, the Sgml module seems in rather bad shape:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=265383
I didn't had the time to investigate how last changes broke this one.
Mt.
-- 
Thou shalt run lint frequently and study its pronouncements with care, for
verily its perception and judgement oft exceed thine.
  -- First commandment of the C programmer