Paul Prescod papresco at
Tue Dec 16 16:29:16 GMT 1997

Chris Maden wrote:
> You are correct; ']]>' is forbidden in element content, as it should
> be.  This is cruft from SGML; the msc/mdc combination (marked section
> close = ']]', markup declaration close = '>') is always recognized as
> a delimiter (see Figure 3, ISO 8879).  As a result, XML mandates that
> this combination always be escaped using ']]>' unless it actually
> closes a marked section.

The reason for this is not just SGML compatibility, it is robustness. A
floating MDC is almost certainly an error in the document. If I
accidently end a CDATA marked section twice, I want to *know*.

 Paul Prescod

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