Re: [xsl] Regex groups / was: Re: [xsl] Move leading/trailing spaces outside (XSLT 2.0)

[Martin Honnen <Martin.Honnen@xxxxxx>]

Yves Forkl wrote:

> Though familiar with RegExp functions in various languages, I am not 
> sure how this one works, so I wonder what happens when the condition of 
> the first regex group cannot be satisfied. Supposing that the second 
> matches, will I then have to refer to it as regex-group(1) or still as 
> regex-group(2)? I.e., do the numbers index the groups defined in the 
> regex or the substrings that actually matched one of the groups?

The group-number argument refers to the number of subexpressions in 
parentheses. If the subexpression does not match anything then 
regex-group(index) returns the empty string
  <http://www.w3.org/TR/xslt20/#function-regex-group>

--

	Martin Honnen
	http://JavaScript.FAQTs.com/