RE: [xsl] "grouping" footnote numbers

[Emma Burrows <Emma.Burrows@xxxxxxxxxxx>]

From: David Carlisle [mailto:davidc@xxxxxxxxx]
> change that to xsl:value-of select="position()"  having grouped them all
> you just want to know which group you ar in and position(0 tells you that

Thank you very much for looking into this. Alas, this XSL:

<xsl:key name="fn" match="xref" use="@href"/>
...
<sup>
  <xsl:for-each-group select="key('fn', @href)" group-by="@href">
    <xsl:value-of select="position()"/>
  </xsl:for-each-group>
</sup>

Just results in every reference being numbered as 1. I'm not sure why - either
because the grouping is based on a key or because this appears in the "xref"
template?

To move this forward, here is some actual XML for you:

Input
=====
    <p><b>Caesarean section</b></p>
    <p>Single dose<xref href="footnote-113022.dita#bnf_113022" type="fn"/> of
i/v cefuroxime</p>
    <p>Administer immediately after umbilical cord is clamped. Add i/v
teicoplanin<xref href="footnote-202621.dita#bnf_202621" type="fn"/></p>
    <p><b>Hysterectomy</b><xref href="footnote-204127.dita#bnf_204127"
type="fn"/></p>
    <p>Single dose<xref href="footnote-113022.dita#bnf_113022" type="fn"/> of
i/v cefuroxime + i/v
        metronidazole<xref href="footnote-113019.dita#bnf_113019" type="fn"/>
      <i>or</i> i/v gentamicin + i/v metronidazole<xref
href="footnote-113019.dita#bnf_113019" type="fn"/>
      <i>or</i> i/v co-amoxiclav alone</p>
    <p>Use single dose<xref href="footnote-113022.dita#bnf_113022" type="fn"/>
of
        i/v gentamicin + i/v metronidazole<xref
href="footnote-113019.dita#bnf_113019" type="fn"/> or
        add i/v teicoplanin<xref href="footnote-202621.dita#bnf_202621"
type="fn"/></p>
    <p><b>Termination of pregnancy</b></p>
    <p>Single dose<xref href="footnote-113022.dita#bnf_113022" type="fn"/> of
oral metronidazole</p>

XSL:
====

  <xsl:key name="fn" match="xref[@type='fn']" use="@href"/>

  <xsl:template match="p">
    <xsl:element name="{local-name()}"><xsl:apply-templates/></xsl:element>
  </xsl:template>

  <xsl:template match="xref">
    <a href="{@href}">
      <sup>
        <xsl:for-each-group select="key('fn', @href)" group-by="@href">
          <xsl:number level="any"/>
        </xsl:for-each-group>
      </sup>
    </a>
  </xsl:template>

(Incorrect) Output:
===================

  <p>Caesarean section</p>
  <p>Single dose<a href="footnote-113022.dita#bnf_113022"><sup>1</sup></a> of
i/v cefuroxime</p>
  <p>Administer immediately after umbilical cord is clamped. Add i/v
teicoplanin<a href="footnote-202621.dita#bnf_202621"><sup>2</sup></a></p>
  <p>Hysterectomy<a
href="footnote-204127.dita#bnf_204127"><sup>3</sup></a></p>
  <p>Single dose<a href="footnote-113022.dita#bnf_113022"><sup>1</sup></a> of
i/v cefuroxime + i/v
    metronidazole<a href="footnote-113019.dita#bnf_113019"><sup>5</sup></a>
    or i/v gentamicin + i/v metronidazole<a
href="footnote-113019.dita#bnf_113019"><sup>5</sup></a>
    or i/v co-amoxiclav alone</p>
  <p>Use single dose<a href="footnote-113022.dita#bnf_113022"><sup>1</sup></a>
of
    i/v gentamicin + i/v metronidazole<a
href="footnote-113019.dita#bnf_113019"><sup>5</sup></a> or
    add i/v teicoplanin<a
href="footnote-202621.dita#bnf_202621"><sup>2</sup></a></p>
  <p>Termination of pregnancy</p>
  <p>Single dose<a href="footnote-113022.dita#bnf_113022"><sup>1</sup></a> of
oral metronidazole</p>

So essentially, I get footnote reference numbers 1, 2, 3 and 5. I'd like
number 5 to come out as number 4 as I'd expect. Thank again, David, and
whoever would like to jump in to give you a break. :)