XQuery to report matching XSLT templates with non-tunnel parameters

non-tunnel-params.xq

(: This will report matching XSLT templates with non-tunnel parameters.
   These are dangerous because if a template with higher priority or import 
   precedence intercepts a given template with such a parameter, and then
   uses <xsl:next-match/> without passing the parameter, the template will
   not receive the same parameter any more. This might not flag an error,
   for example if the parameter is declared xs:boolean? or if there is no
   as attribute at all. This can lead to unexpected behavior.
   
   Paste the code in in the oXygen XPath/XQuery Builder or execute it
   standalone with XQuery-enabled Saxon, and adapt $dir-uri according 
   to you needs. 
:)
declare variable $dir-uri external := 'file:///C:/path/to/project';

<non-tunnel-params> {
  for $params in collection($dir-uri || '/?match=.*\.xslt?;recurse=yes')
                   //*:template[@match]/*:param[not(@tunnel=('1','yes','true'))]
  let $bu := base-uri($params)
  group by $bu
  return <stylesheet href="{$bu}" 
                     count="{count($params)}" 
                     names="{sort(distinct-values($params/@name))}"> {
    for $template in $params/..
    return <template match="{$template/@match => normalize-space()}" 
                     params="{$template/*:param[not(@tunnel=('1','yes','true'))]/@name}"> { 
                       $template/(@priority, @mode), 
                       attribute line { saxon:line-number($template) }
           } </template>
  } </stylesheet>
} </non-tunnel-params>

out.xml

<?xml version="1.0" encoding="UTF-8"?>
<non-tunnel-params>
  <stylesheet href="file:/C:/cygwin/home/gerrit/Hogrefe/BookTagSet/transpect/bits2hub/xsl/bits2hub.xsl"
              count="7"
              names="first-list-para render">
    <template match="bio[count(parent::*/*) = 2 and ../contrib]"
              params="render"
              mode="bits2hub-default"
              line="141"/>
    <template match="*[self::sec or self::title-group or self::ref-list][title]/label"
              params="render"
              mode="bits2hub-default"
              line="183"/>
    <template match="*[table]/caption"
              params="render"
              mode="bits2hub-default"
              priority="1"
              line="370"/>
    <template match="caption[count(*) != count(title)]/title"
              params="render"
              mode="bits2hub-default"
              priority="1"
              line="391"/>
    <template match="*[caption[title]]/label"
              params="render"
              mode="bits2hub-default"
              line="411"/>
    <template match="list-item/p"
              params="first-list-para"
              mode="bits2hub-default"
              line="439"/>
    <template match="list-item/p[every $child in node() satisfies ($child[self::fig | self::boxed-text | self::table]) ]"
              params="first-list-para"
              mode="bits2hub-default"
              line="457"/>
  </stylesheet>
  <stylesheet href="file:/C:/cygwin/home/gerrit/Hogrefe/BookTagSet/transpect/docxtools/hub2docx/xsl/module/merge-with-template.xsl"
              count="1"
              names="template-nums">
    <template match="w:num"
              params="template-nums"
              mode="hub:merge"
              line="211"/>
  </stylesheet>
  <stylesheet href="file:/C:/cygwin/home/gerrit/Hogrefe/BookTagSet/transpect/schematron/oxy/iso-schematron-abstract.xsl"
              count="4"
              names="message params">
    <template match="* | processing-instruction() | comment()"
              params="params"
              mode="instantiate"
              line="86"/>
    <template match="@*" params="params" mode="instantiate" line="95"/>
    <template match="*" params="message" mode="errorMsg" line="161"/>
    <template match="text()" params="params" mode="instantiate" line="167"/>
  </stylesheet>
  <!-- … -->
</non-tunnel-params>