TREX update 2000-01-15

Date:      Mon, 15 Jan 2001 12:25:35 +0700
From:      James Clark <jjc@jclark.com>
To:        XML Developers' List <xml-dev@lists.xml.org>
Subject:   TREX update

I've updated the TREX website

http://www.thaiopensource.com/trex/

The only change to the language is that I've refined the way it handles merging included grammars. See:

http://www.thaiopensource.com/trex/tutorial.html#Merging_grammars

for more information.

I've also done a complete implementation of XHTML modularization in TREX. See:

http://www.thaiopensource.com/trex/xhtml/

This has been done by hand not automatically, so there are probably bugs, but it takes full advantage of TREX. Notably, with TREX there's no need to create a model module specific to the combination of modules you are using; you just have to include the modules you need. I was also pleasantly surprised to discover that it was possible to implement exceptions in TREX (used in HTML 4 to, for example, prevent nested links), even though there's no specific exceptions feature in TREX. I've added an explanation of this technique to the tutorial:

http://www.thaiopensource.com/trex/tutorial.html#Concur

The sample implementation has also been updated to match the language spec and fix some bugs.

James

Prepared by Robin Cover for The XML Cover Pages archive.

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