Re: (dsssl) Flurry of errors in onsgmls--can't read xml.dcl?

Subject: Re: (dsssl) Flurry of errors in onsgmls--can't read xml.dcl?
From: daniel lance herrick <dan.herrick@xxxxxxxxxxxxxxxx>
Date: Tue, 25 Feb 2003 08:21:05 -0500 (EST)
On Mon, 24 Feb 2003, maurice chadwick york wrote:

> > Cite exactly what the first few errors are (possibly using the -E4
> > switch).  I would guess it's not able to find xml.dcl.
> >
> onsgmls generates the following errors:
> maurice% onsgmls -wxml -E4 sermon.xml
> onsgmls:sermon.dtd:1:46:E: omitted tag minimization parameter can be
> omitted only if "OMITTAG NO" is specified on the SGML declaration
> The error seems to specify the end of every line in the DTD that has an
> element on it. For example, line one of the DTD is
> <!ELEMENT sermon (source, title, author, text)>

Oh! I should have recognized this sooner. It took
me two or three days, digging through the SGML
specification before finally coming to understand
that the actual words of that error message are
exactly and precisely what is wrong, back when I
hit this one. (The first impression of many of the
error messages is that they must be written in
Sanskrit, but I have eventually always found out
that they are written in "SGML Spec".)

The "<!ELEMENT ... >" dtd component has an
optional parameter called the "omitted tag
minimization parameter". It is expressed in a one
character code (may have punctuation to mark it).
(The specification is home, I am not, and I could
not quickly find an example, so I can't give you
the correct syntax.)

Some of that two or three days I spent trying to
figure out how to supply a different "SGML
declaration" than it was using (with "OMITTAG NO"
added), but eventually gave that up as hopeless
and added the minimization parameter to every
ELEMENT declaration in the value that said
omitting tags is not allowed. I did not solve the
question of what determines what SGML declaration
onsgmls uses.

> I am using very simple DTDs for testing purposes, so there are no empty
> elements--just straightforward ELEMENT and ATTLIST declarations. I have
> the following environment parameters set in my .cshrc to try to get it to
> find xml.dcl:

xml does not allow omitting tags, so you are
invoking a different "SGML declaration" than the
xml "SGML declaration".


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