string-length($s) - string-length(translate($s, 'X', ''))

or if you prefer

string-length(replace($s, '[^X]', ''))

Michael Kay 

> -----Original Message-----
> From: Christian Roth [mailto:roth@xxxxxxxxxxxxxx] 
> Sent: 02 April 2008 06:02
> To: XSL List
> Subject:  Counting occurences of a character in a string
> 
> Hello,
> 
> in XSLT 2, is there an easier or more efficient way to count 
> the occurrences of a certain character (here: 'X') in a string $s than
> 
> string-length( string-join( tokenize( $s, "[^X]+" ), "" ) )
> 
> ? 
> 
> I'm sure there must be, I just don't see it at the moment...
> 
> -Christian