Considering the following Matcher declaration in Cocoon Sitemap :

<map:matcher
    logger="sitemap.matcher.publicationformat"
    name="publication-format"
    src="fr.paris5.shaman.spirit.insightsource.PublicationFormatMatcher"
/>

We want the following Sitemap fragment to build the right pipeline if format of referred publication is "MY-FORMAT", according to Spirit-tailored URLs format :

<map:match type="publication-format" pattern="MY-FORMAT" >
  <!-- pipeline description here -->
</map:match>

This can be done because requested URI contains information implicit or explicit information on the Publication format, which will finally be matched with the pattern argument.