<section><title>grumble</title>...</section>
<section id="grumble"><title>grumble</title>...</section>
would make
<section id="grumble"><title>grumble</title>...</section>
<section id="grumble"><title>grumble</title>...</section>
you can avoid this like so
<xsl:key name="noid" match="section[not(@id)]" use="translate(title,'
!#,()','_')"/>
<xsl:key name="id" match="*[(_at_)id]" use="@id"/>
<xsl:template match="section[not(@id)]">
<xsl:copy>
<xsl:variable name="id" select="translate(title,' !#._,()','_')"/>
<xsl:variable name="thisnode" select="generate-id()"/>
<xsl:attribute name="id">
<xsl:value-of select="$id"/>
<xsl:for-each select="key('noid',$id)">
<xsl:if test="(key('id',$id)) or (position()!=1 and
generate-id(.)=$thisnode)">
<xsl:text>-</xsl:text>
<xsl:value-of select="position()"/>
</xsl:if>
</xsl:for-each>
</xsl:attribute>
<xsl:copy-of select="@*"/>
<xsl:apply-templates/>
</xsl:copy>
</xsl:template>
which makes
<section id="grumble-1"><title>grumble</title>...</section>
<section id="grumble"><title>grumble</title>...</section>
adding -1 now.
So as long as the "suffix" form isn't used by any original ids, you
should be OK.
David
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