At the head of this thread, C. M. Sperberg-McQueen wrote:
 
> The VM2 markup validator is very fast, and I have not had any problems
> with it so far, in very light use, although Lou has reported an
> inexplicable error message which went away when he removed a comment
> from the DTD in question.  (N.B. I'm not certain that this error message
> came from the DOS version; it could have come from the Unix port
> performed, as I understand, by Dominic Dunlop et al. at OUCS.)
 
I cannot tell a lie (and I'm not trying to shirk responsibility...): the
large bulk of the work on the UNIX port that we're using here was done
by James Clark in London.  I just applied a minimal amount of
cosmetic.  Having been in touch with James, we both agree that more
could be done, but are not too keen to do it until we know whether
there is anybody who is working on or coordinating an ``official''
UNIX port.  Would anybody doing this job care to speak up?
 
I doubt that James' changes are responsible for the incorrect comment
handling mentioned: they are concerned with I/O, not with parsing.
 
James' patches to the MS-DOS source are (supposedly) available by anonymous
ftp from nic.funet.fi as pub/unix/languages/sgml/arcsgml-1.0jclark.tar.Z.
The main thing that I've done is to write a UNIX man page, which I shall
post separately.
---
Dominic Dunlop