RE: [xsl] Unicode character blocks in strings

Subject: RE: [xsl] Unicode character blocks in strings
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 29 May 2009 10:48:31 -0400
At 2009-05-29 15:25 +0100, tom tom wrote:
My confusion came when I was trying to the value 'IsCJKUnifiedIdeographs' in a variable and reference this in an attribute value template.

If I store 'IsCJKUnifiedIdeographs' in the variable 'UnicodeCharBlock' \p{{{$UnicodeCharBlock}}} seems to work.

Right ...

If I understand you correctly the innermost {} flags the AVT,


the outermost ones are the actual braces required for this expression.

Indeed, but not quite the way you think.

Are the middle ones to process the results of the first AVT within a second AVT?

No, it is simpler than that. When you want an evaluation, using a single matched set of "{" and "}" with the expression inside. When you want a literal left brace, use two. When you want a literal right brace, use two. There is no need in XSLT for matching the pairs of braces, right for left ... it is just a simple escaping method of using two to get one. Of course for the regular expression to be interpreted by XSLT properly you need to match them, but my point is that in an AVT there is no obligation to match the escaped braces.

I hope this helps.

. . . . . . . . . . Ken

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