[xsl] About position() in xsl:for-each-group

[Christian Rinderknecht <rinderkn@xxxxxxxxxxxx>]

Dear members,

Learning the ropes I came across this piece of code from the standard:

<xsl:for-each-group select="cities/city" group-by="@country">
  <tr>
    <td><xsl:value-of select="position()"/></td>
    <td><xsl:value-of select="@country"/></td>
    <td>
      <xsl:value-of select="current-group()/@name" separator=", "/>
    </td>
    <td><xsl:value-of select="sum(current-group()/@pop)"/></td>
  </tr>
</xsl:for-each-group>

Am I the only one to find odd that "position()" evaluates to the 
position of the current group instead of 1, i.e., the position of the 
first city in the current group (contrast with "@country")?

Best regards,

Christian