commit e2434ec62315233bb22907fc2a6fb603e3fadd2f
Author: Alexander Lakhin <a.lakhin@postgrespro.ru>
Date:   Mon Nov 21 22:54:36 2016 +0300

    Change subtoc output condition
    
    As in contrib.html:
        F.1. adminpack
            F.1.1. Functions Implemented
        F.2. auth_delay
            F.2.1. Configuration Parameters
            F.2.2. Author
        F.3. auto_explain
    ->
        F.1. adminpack
        F.2. auth_delay
        F.3. auto_explain

diff --git a/doc/src/sgml/stylesheet.xsl b/doc/src/sgml/stylesheet.xsl
index 42e8cce..494dbf5 100644
--- a/doc/src/sgml/stylesheet.xsl
+++ b/doc/src/sgml/stylesheet.xsl
@@ -384,4 +384,102 @@ Customization of header
   </xsl:if>
 </xsl:template>
 
+
+<!-- Change subtoc output condition -->
+
+<!-- from xhtml/autotoc.xsl -->
+
+<xsl:template name="subtoc">
+  <xsl:param name="toc-context" select="."/>
+  <xsl:param name="nodes" select="NOT-AN-ELEMENT"/>
+
+  <xsl:variable name="nodes.plus" select="$nodes | qandaset"/>
+
+  <xsl:variable name="subtoc">
+    <xsl:element name="{$toc.list.type}" namespace="http://www.w3.org/1999/xhtml">
+      <xsl:choose>
+        <xsl:when test="$qanda.in.toc != 0">
+          <xsl:apply-templates mode="toc" select="$nodes.plus">
+            <xsl:with-param name="toc-context" select="$toc-context"/>
+          </xsl:apply-templates>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:apply-templates mode="toc" select="$nodes">
+            <xsl:with-param name="toc-context" select="$toc-context"/>
+          </xsl:apply-templates>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:element>
+  </xsl:variable>
+
+  <xsl:variable name="depth">
+    <xsl:choose>
+      <xsl:when test="local-name(.) = 'section'">
+        <xsl:value-of select="count(ancestor::section) + 1"/>
+      </xsl:when>
+      <xsl:when test="local-name(.) = 'sect1'">1</xsl:when>
+      <xsl:when test="local-name(.) = 'sect2'">2</xsl:when>
+      <xsl:when test="local-name(.) = 'sect3'">3</xsl:when>
+      <xsl:when test="local-name(.) = 'sect4'">4</xsl:when>
+      <xsl:when test="local-name(.) = 'sect5'">5</xsl:when>
+      <xsl:when test="local-name(.) = 'refsect1'">1</xsl:when>
+      <xsl:when test="local-name(.) = 'refsect2'">2</xsl:when>
+      <xsl:when test="local-name(.) = 'refsect3'">3</xsl:when>
+      <xsl:when test="local-name(.) = 'topic'">1</xsl:when>
+      <xsl:when test="local-name(.) = 'simplesect'">
+        <!-- sigh... -->
+        <xsl:choose>
+          <xsl:when test="local-name(..) = 'section'">
+            <xsl:value-of select="count(ancestor::section)"/>
+          </xsl:when>
+          <xsl:when test="local-name(..) = 'sect1'">2</xsl:when>
+          <xsl:when test="local-name(..) = 'sect2'">3</xsl:when>
+          <xsl:when test="local-name(..) = 'sect3'">4</xsl:when>
+          <xsl:when test="local-name(..) = 'sect4'">5</xsl:when>
+          <xsl:when test="local-name(..) = 'sect5'">6</xsl:when>
+          <xsl:when test="local-name(..) = 'topic'">2</xsl:when>
+          <xsl:when test="local-name(..) = 'refsect1'">2</xsl:when>
+          <xsl:when test="local-name(..) = 'refsect2'">3</xsl:when>
+          <xsl:when test="local-name(..) = 'refsect3'">4</xsl:when>
+          <xsl:otherwise>1</xsl:otherwise>
+        </xsl:choose>
+      </xsl:when>
+      <xsl:otherwise>0</xsl:otherwise>
+    </xsl:choose>
+  </xsl:variable>
+
+  <xsl:variable name="depth.from.context" select="count(ancestor::*)-count($toc-context/ancestor::*)"/>
+
+  <xsl:variable name="subtoc.list">
+    <xsl:choose>
+      <xsl:when test="$toc.dd.type = ''">
+        <xsl:copy-of select="$subtoc"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:element name="{$toc.dd.type}" namespace="http://www.w3.org/1999/xhtml">
+          <xsl:copy-of select="$subtoc"/>
+        </xsl:element>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:variable>
+  <xsl:variable name="output.subtoc"><xsl:value-of select="
+    ( (self::set or self::book or self::part) or
+       ($toc.section.depth &gt; $depth and local-name($toc-context)!='appendix' and local-name($toc-context)!='preface') ) and
+    ( ($qanda.in.toc = 0 and (count($nodes)&gt;1 or (count($nodes)&gt;0 and ($toc.section.depth - 1 &gt; $depth)) )) or
+      ($qanda.in.toc != 0 and (count($nodes.plus)&gt;1 or (count($nodes)&gt;0 and $toc.section.depth - 1 &gt; $depth) ))) and
+      $toc.max.depth &gt; $depth.from.context
+      "/></xsl:variable>
+  <xsl:element name="{$toc.listitem.type}" namespace="http://www.w3.org/1999/xhtml">
+    <xsl:call-template name="toc.line">
+      <xsl:with-param name="toc-context" select="$toc-context"/>
+    </xsl:call-template>
+    <xsl:if test="$toc.listitem.type = 'li' and $output.subtoc = 'true'">
+      <xsl:copy-of select="$subtoc.list"/>
+    </xsl:if>
+  </xsl:element>
+  <xsl:if test="$toc.listitem.type != 'li' and $output.subtoc = 'true'">
+    <xsl:copy-of select="$subtoc.list"/>
+  </xsl:if>
+</xsl:template>
+
 </xsl:stylesheet>