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Re: Internationalising Regular Expressions

• To: AndrewWatt2000@a...
• Subject: Re: Internationalising Regular Expressions
• From: John Cowan <jcowan@r...>
• Date: Wed, 30 Oct 2002 06:58:11 -0500 (EST)
• Cc: xml-dev@l..., xmlschema-dev@w..., www-forms@w...
• In-reply-to: <ad.258e4e54.2af10ead@a...> from "AndrewWatt2000@a..." at Oct 30, 2002 05:30:05 AM

AndrewWatt2000@a... scripsit:

> So, <xsd:pattern value="\w" /> would match many (unwanted) characters that <
> xsd:pattern value="[A-Za-z0-9_] /> would reject as non-matching. Correct?

Definitely.

> In W3C XML Schema, and therefore in XForms, is it correct that the only way 
> to express the notion of an English language / ASCII "word character" in a 
> regular expression is using [A-Za-z0-9_]? 

Correct.

> Is there any facility to express the notion of, for example, a French word 
> character? Or German?

You'd have to concoct a similar character class, and there is always
a measure of controversy about these things.  The standard English spellings of
"naïve" and "façade" require letters outside [A-Za-z], and so does
one spelling of "coöperate".

> Or is the \p{Basic_Latin} the smallest / most precise 
> "chunk" of characters that can be used in such a setting?

That certainly doesn't do what you want: it matches any ASCII character,
rejecting the non-ASCII ones.

-- 
We call nothing profound                        jcowan@r...
that is not wittily expressed.                  John Cowan
        --Northrop Frye (improved)              http://www.reutershealth.com

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    • From: AndrewWatt2000@a...

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