xsl: extract the first word

[Sam Steingold <sds@gnu.org>]

I am trying to get something like
  (substring X 0 (position #\Space X))
i.e., the first word of the string.
if there are no spaces, I want the whole of X (in that case POSITION
returns NIL and I get what I want).

I tried:

{substring-before(normalize-space(.),' ')}
unfortunately, this returns "" (empty string) when there is no spaces in
the string.

{replace(normalize-space(.),' *','')}
xmlXPathCompOpEval: function replace not found
XPath error : Unregistered function
xmlXPathCompiledEval: 2 object left on the stack

I use xsltproc (v2, comes with cygwin).

thanks!

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
<http://www.iris.org.il> <http://www.jihadwatch.org/>
<http://www.savegushkatif.org> <http://ffii.org/> <http://www.memri.org/>
What was the best thing before sliced bread?