I have small XSL example which is posing rather large difficulty for me... (I think due to the use of parenthesis needed for document order location path).

In the following XML document, I need to be able to query the following:

1) The number of reports which contain an "a" or "b" code where the last code (in document order) which is either an "a" or "b" is an "a".

*correct number is 3 *

2) The number of reports which contain an "a" or "b" code where the last code (in document order) which is either an "a" or "b" is a "b".

*correct number is 1*

t:\ftemp>type stein.xml
<?xml version="1.0" encoding="UTF-8"?>
<reportlist>
  <report>
      <code type="a"/>
      <code type="b"/>
      <code type="c"/>
  </report>
  <report>
      <code type="a"/>
      <code type="b"/>
      <code type="a"/>
  </report>
  <report>
      <code type="z"/>
      <code type="a"/>
      <code type="d"/>
  </report>
  <report>
      <code type="a"/>
      <code type="e"/>
      <code type="f"/>
  </report>
  <report>
      <code type="e"/>
  </report>
</reportlist>

t:\ftemp>type stein.xsl
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                version="1.0">

<xsl:template match="/">
  1) The number of reports which contain an "a" or "b" code where
  the last code (in document order) which is either an "a" or
  "b" is an "a": <xsl:value-of select="
  count(/*/report[code[@type='a'][not(following-sibling::code/@type='b')]])"/>
  2)  The number of reports which contain an "a" or "b" code where
  the last code (in document order) which is either an "a" or
  "b" is a "b":  <xsl:value-of select="
  count(/*/report[code[@type='b'][not(following-sibling::code/@type='a')]])"/>

</xsl:stylesheet>
t:\ftemp>saxon stein.xml stein.xsl

  1) The number of reports which contain an "a" or "b" code where
  the last code (in document order) which is either an "a" or
  "b" is an "a": 3
  2)  The number of reports which contain an "a" or "b" code where
  the last code (in document order) which is either an "a" or
  "b" is a "b":  1
t:\ftemp>

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