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Re: Syntax error in regex pattern

Subject: Re: Syntax error in regex pattern
From: "Martin Honnen martin.honnen@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 13 Jul 2019 16:37:44 -0000
Re:  Syntax error in regex pattern
On 13.07.2019 18:32, Scott Vanderbilt lists@xxxxxxxxxxxxx wrote:

I am trying to use a regex pattern with properties in an xsl:analyze
statement, like this:

B B B <xsl:analyze-string select="$stringtoproc" regex="\p{L}">

with the intention of capturing letters only. However, when using this
in an XSLT transformation in OxygenXML, I receive the following error:

Syntax error at char 2 in regular expression: Expected '{' after \112

The attribute value is treated as an attribute value template where an expression in curly braces is evaluated as an XPath expression. So either double the curly braces if regex="\p{{L}}" or store the value in a variable and use it.

See a section in https://www.w3.org/TR/xslt-30/#analyze-string

Because the regex attribute is an attribute value template, curly
brackets within the regular expression must be doubled. For example, to
match a sequence of one to five characters, write regex=".{{1,5}}". For
regular expressions containing many curly brackets it may be more
convenient to use a notation such as
regex="{'[0-9]{1,5}[a-z]{3}[0-9]{1,2}'}", or to use a variable.

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