Why no ']]>' in CharData?

[John Cowan]

Don Park scripsit:

> Hmm, I see now.  The relevant sentence is: "The right angle
> bracket (>) MAY be represented using the string ">", and
> MUST, for compatibility, be escaped using ">" or a
> character reference when it appears in the string "]]>" in
> content, when that string is not marking the end of a CDATA
> section."

What was the SGML reason for forbidding ]]> in parsed character data?

> 'for compatibility' is defined as: "A feature of XML included
> solely to ensure that XML remains compatible with SGML."
> 
> I think it is fairly safe to say that SML will not be
> compatible with SGML.

Well, surely there will be some escape for < provided in SML.
Suppose it is &lt;, which is both XML and HTML.  In that case,
it wouldn't be much brain strain to require &gt; for >, thus
retaining XML-compatibility.

-- 
John Cowan                                   cowan at ccil.org
       I am a member of a civilization. --David Brin

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