Re: Analyze-string Regex to Match Content within Curly Braces

Curly braces are special in AVTs and they are special in regexes.

To cope with the specialness in AVTs, double them,

To cope with the specialness in regexes, backslash-escape them.

So regex = "\{{[a-z]+\}}"

should do the trick; or as Martin suggests, remove the AVT problem by using a variable (making sure you have expand-text="no")

Michael Kay
Saxonica

> On 17 Nov 2020, at 12:43, Don Smith [email protected] <[email protected]> wrote:
> 
> Once again I find myself at a loss when trying to write a regex in analyze-string that matches on an open/close curly brace combination. I'm using XSLT 2.0 and Saxon PE-9.6.0.7.
> 
> Here's an example of the text content:
> 
> <text>In the be{opthyphen}gin{opthyphen}ning</text>
> 
> I need to match all occurrences (none nested) of an open and close curly brace with the text that occurs in-between.
> 
> I started with this successful regex in a non-XSLT context:
> 
> {[a-z]+}
> 
> Then because the analyze-string @regex is an AVT I double the curly braces:
> 
> {{[a-z]+}}
> 
> thus:
> 
> <xsl:analyze-string select="$content" regex="{{[a-z]+}}" >
> 
> That produces the compile error "Syntax error at char 0 in regular expression. No expression before quantifier". I've tried everything I can think of in terms of using escapes, etc. I've also tried defining the regex as a variable and then referencing it from @regex. But I'm just missing something in the regex itself (I think). All help is appreciated.
> 
> Don
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