[dsdl-discuss] Re: Revised version of DSDL Part 8

Le jeudi 29 juin 2006 à 19:20 +1000, Rick Jelliffe a écrit :
> Actually, I guess Eric if you are looking for material for best
> practices for RELAX NG compact syntax, I would definitely say that
>
> any-attribute = attribute * {text} *
> is less good than
> any-attribute = { attribute * {text}} *

No! That should be "any-attribute = (attribute * {text}) *"

> (if that is indeed OK compact syntax). The first case is just wrong,
> visually, because you naturally expect the occurrence indicator to
> belong to the immediately previous thing. Yuck!

Sure, but {text} isn't a "thing" (or in the case of RELAX NG a
"pattern") :

      * "(text)" is a pattern
      * "attribute * {text}" is a pattern
      * "{text}" is invalid by itself and it's just a piece of source
        text that is used in a pattern definition.

That's why there is no possible confusion (at least for a RELAX NG
parser) and also why it is important to make a difference between () and
{} :)

Eric

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Curious about Relax NG? Read my book online.
                                   http://books.xmlschemata.org/relaxng/
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Eric van der Vlist       http://xmlfr.org            http://dyomedea.com
(ISO) RELAX NG   ISBN:0-596-00421-4 http://oreilly.com/catalog/relax
(W3C) XML Schema ISBN:0-596-00252-1 http://oreilly.com/catalog/xmlschema
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