XSLT: Spaces/Generating NMTOKENS/IDREFS attributes

Hi,

I am trying to generate an IDREFS attribute in XSLT. The problem are
the
spaces between the individual IDREFS (which are computed by an
for-each 
loop):

Fragment of the XSLT script:

<xsl:template match="country">
  <country> 
    <xsl:attribute name="car_code"> 
       <xsl:value-of select="car_code"/>
    </xsl:attribute>
    <xsl:attribute name="memberships"> 
       <xsl:for-each 
            select="//org[member/@ref=current()/@id]"> 
         <xsl:value-of select="current()/@id"/>
       <!-- here I want to insert a simple space :( -->
      </xsl:for-each> 
[...]

produces (using xt), e.g., 

<country car_code="AL" capital="cty-cid-cia-Albania-Tirane"
memberships="org-CEorg-CCCorg-ECEorg-EBRDorg-EUorg-FAOorg-IAEAorg-Interpol">

instead of 

<country car_code="AL" capital="cty-cid-cia-Albania-Tirane"
memberships="org-CEorg-CCC org-ECE org-EBRD org-EU org-FAO org-IAEA
org-Interpol">

How is it possible to get the spaces in XSLT?

BTW, is there any description how to output white space in the
resulting XML document, e.g., linebreaks, indentation etc?

THX,
Wolfgang

-- -----------------------------------------------------------------
Wolfgang May             E-mail: may@xxxxxxxxxxxxxxxxxxxxxxxxxx   
Universitaet Freiburg    http://www.informatik.uni-freiburg.de/~may/
Institut fuer Informatik D-79110 Freiburg / Germany
Lehrstuhl fuer Datenbanken und Informationssysteme


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