diff --git a/xml/cibtr-2.rng b/xml/cibtr-2.rng
index 71830ada36..0c7651b935 100644
--- a/xml/cibtr-2.rng
+++ b/xml/cibtr-2.rng
@@ -1,173 +1,198 @@
 <!--
  Copyright 2018 Red Hat, Inc.
  Author: Jan Pokorny <jpokorny@redhat.com>
  Part of pacemaker project
  SPDX-License-Identifier: GPL-2.0-or-later
  -->
 <grammar xmlns="http://relaxng.org/ns/structure/1.0"
          xmlns:cibtr="http://clusterlabs.org/ns/pacemaker/cibtr-2"
          datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
   <start>
     <ref name="cibtr-2"/>
   </start>
 
   <define name="cibtr-2">
     <element name="cibtr:map">
       <zeroOrMore>
         <ref name="cibtr-2.table"/>
       </zeroOrMore>
     </element>
   </define>
 
   <define name="cibtr-2.table">
     <element name="cibtr:table">
       <attribute name="for">
         <data type="ID"/>
       </attribute>
       <attribute name="msg-prefix">
         <data type="string"/>
       </attribute>
       <choice>
         <zeroOrMore>
           <ref name="cibtr-2.replace.nonwhereaware"/>
         </zeroOrMore>
         <group>
           <attribute name="where-cases">
             <!-- pipe-delimited enumeration-->
             <data type="string">
               <param name="minLength">1</param>
             </data>
           </attribute>
           <!-- cannot arrange this as an interleave of
                cibtr-2.replace.whereaware+ and
                cibtr-2.replace.nonwhereaware* because of
                http://relaxng.org/spec-20011203.html#attribute-restrictions -->
           <zeroOrMore>
             <ref name="cibtr-2.replace.whereaware"/>
           </zeroOrMore>
         </group>
       </choice>
     </element>
   </define>
 
   <!-- leaf attributes -->
 
   <define name="cibtr-2.replace.attr-in-case-of">
     <attribute name="in-case-of">
       <!-- pipe-delimited enumeration-->
       <data type="string"/>
     </attribute>
   </define>
 
+  <define name="cibtr-2.replace.attr-in-case-of-droppable-prefix">
+    <attribute name="in-case-of-droppable-prefix">
+      <!-- just a single argument taken verbatim -->
+      <data type="string">
+        <param name="minLength">1</param>
+      </data>
+    </attribute>
+  </define>
+
   <define name="cibtr-2.replace.attr-msg-extra">
     <attribute name="msg-extra">
       <data type="string">
         <param name="minLength">1</param>
       </data>
     </attribute>
   </define>
 
   <define name="cibtr-2.replace.attr-redefined-as">
     <attribute name="redefined-as">
       <data type="string">
         <param name="minLength">1</param>
       </data>
     </attribute>
   </define>
 
   <define name="cibtr-2.replace.attr-what">
     <attribute name="what">
       <data type="NCName"/>
     </attribute>
   </define>
 
   <define name="cibtr-2.replace.attr-where">
     <attribute name="where">
       <data type="NCName"/>
     </attribute>
   </define>
 
   <define name="cibtr-2.replace.attr-with-possibly">
     <attribute name="with">
       <choice>
         <data type="NCName"/>
         <empty/>
       </choice>
     </attribute>
   </define>
 
   <define name="cibtr-2.replace.attr-with-surely">
     <attribute name="with">
       <choice>
         <data type="NCName"/>
       </choice>
     </attribute>
   </define>
 
   <define name="cibtr-2.replace.attrs-common">
     <ref name="cibtr-2.replace.attr-what"/>
     <optional>
       <ref name="cibtr-2.replace.attr-msg-extra"/>
     </optional>
   </define>
 
   <define name="cibtr-2.replace.attrs-redefined-as-in-case-of">
    <ref name="cibtr-2.replace.attr-redefined-as"/>
     <!-- can be combined with in-case-of, but cannot be combined
          with in-case-of-droppable-prefix -->
     <optional>
       <ref name="cibtr-2.replace.attr-in-case-of"/>
     </optional>
   </define>
 
   <!-- leaf production using the above attribute definitions -->
 
   <define name="cibtr-2.replace.nonwhereaware">
     <element name="cibtr:replace">
       <ref name="cibtr-2.replace.attrs-common"/>
-      <ref name="cibtr-2.replace.attr-with-possibly"/>
-      <optional>
-        <choice>
-          <ref name="cibtr-2.replace.attrs-redefined-as-in-case-of"/>
-          <ref name="cibtr-2.replace.attr-in-case-of"/>
-        </choice>
-      </optional>
+      <choice>
+        <group>
+          <ref name="cibtr-2.replace.attr-with-possibly"/>
+          <optional>
+            <choice>
+              <ref name="cibtr-2.replace.attrs-redefined-as-in-case-of"/>
+              <ref name="cibtr-2.replace.attr-in-case-of"/>
+            </choice>
+          </optional>
+        </group>
+        <group>
+          <ref name="cibtr-2.replace.attr-with-surely"/>
+          <optional>
+            <choice>
+              <ref name="cibtr-2.replace.attrs-redefined-as-in-case-of"/>
+              <ref name="cibtr-2.replace.attr-in-case-of"/>
+              <ref name="cibtr-2.replace.attr-in-case-of-droppable-prefix"/>
+            </choice>
+          </optional>
+        </group>
+      </choice>
     </element>
   </define>
 
   <define name="cibtr-2.replace.whereaware">
     <element name="cibtr:replace">
       <ref name="cibtr-2.replace.attrs-common"/>
       <!-- cf. comment at cibtr-2.table -->
       <choice>
         <group>
           <ref name="cibtr-2.replace.attr-with-surely"/>
           <ref name="cibtr-2.replace.attr-where"/>
           <optional>
             <choice>
               <ref name="cibtr-2.replace.attrs-redefined-as-in-case-of"/>
               <ref name="cibtr-2.replace.attr-in-case-of"/>
+              <ref name="cibtr-2.replace.attr-in-case-of-droppable-prefix"/>
             </choice>
           </optional>
         </group>
         <group>
           <ref name="cibtr-2.replace.attr-with-surely"/>
           <optional>
             <ref name="cibtr-2.replace.attr-where"/>
           </optional>
           <choice>
             <ref name="cibtr-2.replace.attrs-redefined-as-in-case-of"/>
             <ref name="cibtr-2.replace.attr-in-case-of"/>
+            <ref name="cibtr-2.replace.attr-in-case-of-droppable-prefix"/>
           </choice>
         </group>
         <group>
           <ref name="cibtr-2.replace.attr-with-possibly"/>
           <optional>
             <ref name="cibtr-2.replace.attr-in-case-of"/>
           </optional>
         </group>
       </choice>
     </element>
   </define>
 
 </grammar>
diff --git a/xml/resources-3.0.rng b/xml/resources-3.0.rng
index 6494e59862..ff5eb7c959 100644
--- a/xml/resources-3.0.rng
+++ b/xml/resources-3.0.rng
@@ -1,403 +1,404 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <grammar xmlns="http://relaxng.org/ns/structure/1.0"
          datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
   <start>
       <ref name="element-resources"/>
   </start>
 
   <define name="element-resources">
     <element name="resources">
       <zeroOrMore>
         <choice>
           <ref name="element-primitive"/>
           <ref name="element-template"/>
           <ref name="element-group"/>
           <ref name="element-clone"/>
           <ref name="element-master"/>
           <ref name="element-bundle"/>
         </choice>
       </zeroOrMore>
     </element>
   </define>
 
   <!--
    see upgrade-2.10.xsl
    - cibtr:table for="resource-instance-attributes"
    -->
   <define name="primitive-template.instance_attributes.nvpair.name-unsupported">
     <attribute name="name">
       <data type="string">
         <except>
           <choice>
+            <value>pcmk_arg_map</value>
             <value>pcmk_list_cmd</value>
             <value>pcmk_monitor_cmd</value>
             <value>pcmk_off_cmd</value>
             <value>pcmk_on_cmd</value>
             <value>pcmk_reboot_cmd</value>
             <value>pcmk_status_cmd</value>
           </choice>
         </except>
       </data>
     </attribute>
   </define>
 
   <define name="element-resource-extra.primitive-template">
     <zeroOrMore>
       <choice>
         <element name="meta_attributes">
           <externalRef href="nvset-3.0.rng"/>
         </element>
         <element name="instance_attributes">
           <grammar>
             <include href="nvset-3.0.rng">
               <define name="element-nvset.name">
                 <parentRef name="primitive-template.instance_attributes.nvpair.name-unsupported"/>
               </define>
             </include>
           </grammar>
         </element>
       </choice>
     </zeroOrMore>
   </define>
 
   <define name="element-primitive">
     <element name="primitive">
       <interleave>
         <attribute name="id"><data type="ID"/></attribute>
         <choice>
           <group>
             <ref name="element-resource-class"/>
             <attribute name="type"><text/></attribute>
           </group>
           <attribute name="template"><data type="IDREF"/></attribute>
         </choice>
         <optional>
           <attribute name="description"><text/></attribute>
         </optional>
         <ref name="element-resource-extra.primitive-template"/>
         <ref name="element-operations"/>
         <zeroOrMore>
           <element name="utilization">
             <externalRef href="nvset-3.0.rng"/>
           </element>
         </zeroOrMore>
       </interleave>
     </element>
   </define>
 
   <define name="element-template">
     <element name="template">
       <interleave>
         <attribute name="id"><data type="ID"/></attribute>
         <ref name="element-resource-class"/>
         <attribute name="type"><text/></attribute>
         <optional>
           <attribute name="description"><text/></attribute>
         </optional>
         <ref name="element-resource-extra.primitive-template"/>
         <ref name="element-operations"/>
         <zeroOrMore>
           <element name="utilization">
             <externalRef href="nvset-3.0.rng"/>
           </element>
         </zeroOrMore>
       </interleave>
     </element>
   </define>
 
   <define name="element-bundle">
     <element name="bundle">
       <interleave>
         <attribute name="id"><data type="ID"/></attribute>
         <optional>
           <attribute name="description"><text/></attribute>
         </optional>
         <ref name="element-resource-extra"/>
         <choice>
           <element name="docker">
             <attribute name="image"><text/></attribute>
             <optional>
               <attribute name="replicas"><data type="integer"/></attribute>
             </optional>
             <optional>
               <attribute name="replicas-per-host"><data type="integer"/></attribute>
             </optional>
             <optional>
               <choice>
                 <attribute name="masters"><data type="integer"/></attribute>
                 <attribute name="promoted-max"><data type="integer"/></attribute>
               </choice>
             </optional>
             <optional>
               <attribute name="run-command"> <text/></attribute>
             </optional>
             <optional>
               <attribute name="network"><text/></attribute>
             </optional>
             <optional>
               <attribute name="options"><text/></attribute>
             </optional>
           </element>
           <element name="rkt">
             <attribute name="image"><text/></attribute>
             <optional>
               <attribute name="replicas"><data type="integer"/></attribute>
             </optional>
             <optional>
               <attribute name="replicas-per-host"><data type="integer"/></attribute>
             </optional>
             <optional>
               <choice>
                 <attribute name="masters"><data type="integer"/></attribute>
                 <attribute name="promoted-max"><data type="integer"/></attribute>
               </choice>
             </optional>
             <optional>
               <attribute name="run-command"> <text/></attribute>
             </optional>
             <optional>
               <attribute name="network"><text/></attribute>
             </optional>
             <optional>
               <attribute name="options"><text/></attribute>
             </optional>
           </element>
         </choice>
         <optional>
           <element name="network">
             <optional>
               <attribute name="ip-range-start"><text/></attribute>
             </optional>
             <optional>
               <attribute name="control-port"><data type="integer"/></attribute>
             </optional>
             <optional>
               <attribute name="host-interface"><text/></attribute>
             </optional>
             <optional>
               <attribute name="host-netmask"><data type="integer"/></attribute>
             </optional>
             <optional>
               <attribute name="add-host"><data type="boolean"/></attribute>
             </optional>
             <zeroOrMore>
               <element name="port-mapping">
                 <attribute name="id"><data type="ID"/></attribute>
                 <choice>
                   <group>
                     <attribute name="port"><data type="integer"/></attribute>
                     <optional>
                       <attribute name="internal-port"><data type="integer"/></attribute>
                     </optional>
                   </group>
                   <attribute name="range">
                     <data type="string">
                       <param name="pattern">([0-9\-]+)</param>
                     </data>
                   </attribute>
                 </choice>
               </element>
             </zeroOrMore>
           </element>
         </optional>
         <optional>
           <element name="storage">
             <zeroOrMore>
               <element name="storage-mapping">
                 <attribute name="id"><data type="ID"/></attribute>
                 <choice>
                   <attribute name="source-dir"><text/></attribute>
                   <attribute name="source-dir-root"><text/></attribute>
                 </choice>
                 <attribute name="target-dir"><text/></attribute>
                 <optional>
                   <attribute name="options"><text/></attribute>
                 </optional>
               </element>
             </zeroOrMore>
           </element>
         </optional>
         <optional>
           <ref name="element-primitive"/>
         </optional>
       </interleave>
     </element>
   </define>
 
   <define name="element-group">
     <element name="group">
       <attribute name="id"><data type="ID"/></attribute>
       <optional>
         <attribute name="description"><text/></attribute>
       </optional>
       <interleave>
         <ref name="element-resource-extra"/>
         <oneOrMore>
           <ref name="element-primitive"/>
         </oneOrMore>
       </interleave>
     </element>
   </define>
 
   <define name="element-clone">
     <element name="clone">
       <attribute name="id"><data type="ID"/></attribute>
       <optional>
         <attribute name="description"><text/></attribute>
       </optional>
       <interleave>
         <ref name="element-resource-extra"/>
         <choice>
           <ref name="element-primitive"/>
           <ref name="element-group"/>
         </choice>
       </interleave>
     </element>
   </define>
 
   <define name="element-master">
     <element name="master">
       <attribute name="id"><data type="ID"/></attribute>
       <optional>
         <attribute name="description"><text/></attribute>
       </optional>
       <interleave>
         <ref name="element-resource-extra"/>
         <choice>
           <ref name="element-primitive"/>
           <ref name="element-group"/>
         </choice>
       </interleave>
     </element>
   </define>
 
   <define name="element-resource-extra">
     <zeroOrMore>
       <choice>
         <element name="meta_attributes">
           <externalRef href="nvset-3.0.rng"/>
         </element>
         <element name="instance_attributes">
           <externalRef href="nvset-3.0.rng"/>
         </element>
       </choice>
     </zeroOrMore>
   </define>
 
   <!--
    see upgrade-2.10.xsl
    - cibtr:table for="resources-operation"
    -->
   <define name="op.meta_attributes.nvpair.name-unsupported">
     <attribute name="name">
       <data type="string">
         <except>
           <choice>
             <value>requires</value>
           </choice>
         </except>
       </data>
     </attribute>
   </define>
 
   <define name="element-resource-extra.op">
     <zeroOrMore>
       <choice>
         <element name="meta_attributes">
           <grammar>
             <include href="nvset-3.0.rng">
               <define name="element-nvset.name">
                 <parentRef name="op.meta_attributes.nvpair.name-unsupported"/>
               </define>
             </include>
           </grammar>
         </element>
         <element name="instance_attributes">
           <externalRef href="nvset-3.0.rng"/>
         </element>
       </choice>
     </zeroOrMore>
   </define>
 
   <define name="element-operations">
     <optional>
       <element name="operations">
         <optional>
           <attribute name="id"><data type="ID"/></attribute>
         </optional>
         <optional>
           <attribute name="id-ref"><data type="IDREF"/></attribute>
         </optional>
         <zeroOrMore>
           <element name="op">
             <attribute name="id"><data type="ID"/></attribute>
             <attribute name="name"><text/></attribute>
             <attribute name="interval"><text/></attribute>
             <optional>
               <attribute name="description"><text/></attribute>
             </optional>
             <optional>
               <choice>
                 <attribute name="start-delay"><text/></attribute>
                 <attribute name="interval-origin"><text/></attribute>
               </choice>
             </optional>
             <optional>
               <attribute name="timeout"><text/></attribute>
             </optional>
             <optional>
               <attribute name="enabled"><data type="boolean"/></attribute>
             </optional>
             <optional>
               <attribute name="record-pending"><data type="boolean"/></attribute>
             </optional>
             <optional>
               <attribute name="role">
                 <choice>
                   <value>Stopped</value>
                   <value>Started</value>
                   <value>Slave</value>
                   <value>Master</value>
                 </choice>
               </attribute>
             </optional>
             <optional>
               <attribute name="on-fail">
                 <choice>
                   <value>ignore</value>
                   <value>block</value>
                   <value>stop</value>
                   <value>restart</value>
                   <value>standby</value>
                   <value>fence</value>
                   <value>restart-container</value>
                 </choice>
               </attribute>
             </optional>
             <ref name="element-resource-extra.op"/>
           </element>
         </zeroOrMore>
       </element>
     </optional>
   </define>
 
   <define name="element-resource-class">
     <choice>
       <group>
         <attribute name="class"><value>ocf</value></attribute>
         <attribute name="provider"><text/></attribute>
       </group>
       <attribute name="class">
         <choice>
           <value>lsb</value>
           <value>heartbeat</value>
           <value>stonith</value>
           <value>upstart</value>
           <value>service</value>
           <value>systemd</value>
           <value>nagios</value>
         </choice>
       </attribute>
     </choice>
   </define>
 </grammar>
diff --git a/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.ref b/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.ref
new file mode 100644
index 0000000000..8aa8047482
--- /dev/null
+++ b/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.ref
@@ -0,0 +1,48 @@
+<cib validate-with="pacemaker-3.0" admin_epoch="0" epoch="0" num_updates="0">
+  <configuration>
+    <crm_config/>
+    <nodes/>
+    <resources>
+
+      <primitive class="stonith" id="fence-vbox1" type="fence_vbox">
+        <instance_attributes id="fence-vbox1-params">
+          <nvpair id="fence-vbox1-params-ipaddr" name="ipaddr" value="192.0.3.10"/>
+          <nvpair id="fence-vbox1-params-login" name="login" value="vboxadmin"/>
+          <nvpair id="fence-vbox1-params-passwd_script" name="passwd_script" value="/usr/local/cluster/vboxpass.sh"/>
+          <nvpair id="fence-vbox1-params-plug" name="plug" value="vboxhost"/>
+          <nvpair id="fence-vbox1-pcmk_arg_map" name="pcmk_host_argument" value="port"/>
+        </instance_attributes>
+        <operations>
+          <op id="fence-vbox1-monitor" interval="60s" name="monitor"/>
+        </operations>
+      </primitive>
+
+      <primitive class="stonith" id="fence-vbox2" type="fence_vbox">
+        <instance_attributes id="fence-vbox2-params">
+          <nvpair id="fence-vbox2-params-ipaddr" name="ipaddr" value="192.0.3.10"/>
+          <nvpair id="fence-vbox2-params-login" name="login" value="vboxadmin"/>
+          <nvpair id="fence-vbox2-params-passwd_script" name="passwd_script" value="/usr/local/cluster/vboxpass.sh"/>
+          <nvpair id="fence-vbox2-params-plug" name="plug" value="vboxhost"/>
+        </instance_attributes>
+        <operations>
+          <op id="fence-vbox2-monitor" interval="60s" name="monitor"/>
+        </operations>
+      </primitive>
+
+      <primitive class="stonith" id="fence-vbox3" type="fence_vbox">
+        <instance_attributes id="fence-vbox3-params">
+          <nvpair id="fence-vbox3-params-ipaddr" name="ipaddr" value="192.0.3.10"/>
+          <nvpair id="fence-vbox3-params-login" name="login" value="vboxadmin"/>
+          <nvpair id="fence-vbox3-params-passwd_script" name="passwd_script" value="/usr/local/cluster/vboxpass.sh"/>
+          <nvpair id="fence-vbox3-params-plug" name="plug" value="vboxhost"/>
+        </instance_attributes>
+        <operations>
+          <op id="fence-vbox3-monitor" interval="60s" name="monitor"/>
+        </operations>
+      </primitive>
+
+    </resources>
+    <constraints/>
+  </configuration>
+  <status/>
+</cib>
diff --git a/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.ref.err b/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.ref.err
new file mode 100644
index 0000000000..b7dfd08fea
--- /dev/null
+++ b/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.ref.err
@@ -0,0 +1,3 @@
+Resource instance_attributes: fence-vbox1-pcmk_arg_map: renaming pcmk_arg_map as pcmk_host_argument for matching port: prefix that will, meanwhile, get dropped
+Resource instance_attributes: fence-vbox2-pcmk_arg_map: dropping pcmk_arg_map
+Resource instance_attributes: fence-vbox3-pcmk_arg_map: dropping pcmk_arg_map
diff --git a/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.xml b/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.xml
new file mode 100644
index 0000000000..01a2782db9
--- /dev/null
+++ b/xml/test-2/051-rsc-attrs-instance-pcmk_arg_map.xml
@@ -0,0 +1,50 @@
+<cib validate-with="pacemaker-2.0" admin_epoch="0" epoch="0" num_updates="0">
+  <configuration>
+    <crm_config/>
+    <nodes/>
+    <resources>
+
+      <primitive class="stonith" id="fence-vbox1" type="fence_vbox">
+        <instance_attributes id="fence-vbox1-params">
+          <nvpair id="fence-vbox1-params-ipaddr" name="ipaddr" value="192.0.3.10"/>
+          <nvpair id="fence-vbox1-params-login" name="login" value="vboxadmin"/>
+          <nvpair id="fence-vbox1-params-passwd_script" name="passwd_script" value="/usr/local/cluster/vboxpass.sh"/>
+          <nvpair id="fence-vbox1-params-plug" name="plug" value="vboxhost"/>
+          <nvpair id="fence-vbox1-pcmk_arg_map" name="pcmk_arg_map" value="port:port"/>
+        </instance_attributes>
+        <operations>
+          <op id="fence-vbox1-monitor" interval="60s" name="monitor"/>
+        </operations>
+      </primitive>
+
+      <primitive class="stonith" id="fence-vbox2" type="fence_vbox">
+        <instance_attributes id="fence-vbox2-params">
+          <nvpair id="fence-vbox2-params-ipaddr" name="ipaddr" value="192.0.3.10"/>
+          <nvpair id="fence-vbox2-params-login" name="login" value="vboxadmin"/>
+          <nvpair id="fence-vbox2-params-passwd_script" name="passwd_script" value="/usr/local/cluster/vboxpass.sh"/>
+          <nvpair id="fence-vbox2-params-plug" name="plug" value="vboxhost"/>
+          <nvpair id="fence-vbox2-pcmk_arg_map" name="pcmk_arg_map" value="dropme:sure,port:port"/>
+        </instance_attributes>
+        <operations>
+          <op id="fence-vbox2-monitor" interval="60s" name="monitor"/>
+        </operations>
+      </primitive>
+
+      <primitive class="stonith" id="fence-vbox3" type="fence_vbox">
+        <instance_attributes id="fence-vbox3-params">
+          <nvpair id="fence-vbox3-params-ipaddr" name="ipaddr" value="192.0.3.10"/>
+          <nvpair id="fence-vbox3-params-login" name="login" value="vboxadmin"/>
+          <nvpair id="fence-vbox3-params-passwd_script" name="passwd_script" value="/usr/local/cluster/vboxpass.sh"/>
+          <nvpair id="fence-vbox3-params-plug" name="plug" value="vboxhost"/>
+          <nvpair id="fence-vbox3-pcmk_arg_map" name="pcmk_arg_map" value="port:port,dropme:justhope"/>
+        </instance_attributes>
+        <operations>
+          <op id="fence-vbox3-monitor" interval="60s" name="monitor"/>
+        </operations>
+      </primitive>
+
+    </resources>
+    <constraints/>
+  </configuration>
+  <status/>
+</cib>
diff --git a/xml/upgrade-2.10.xsl b/xml/upgrade-2.10.xsl
index 4cc59c5f7a..7cb87b95a3 100644
--- a/xml/upgrade-2.10.xsl
+++ b/xml/upgrade-2.10.xsl
@@ -1,1658 +1,1710 @@
 <!--
  Copyright 2018 Red Hat, Inc.
  Author: Jan Pokorny <jpokorny@redhat.com>
  Part of pacemaker project
  SPDX-License-Identifier: GPL-2.0-or-later
  -->
 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:cibtr="http://clusterlabs.org/ns/pacemaker/cibtr-2">
 <xsl:output method="xml" encoding="UTF-8" indent="yes" omit-xml-declaration="yes"/>
 
 <xsl:param name="cib-min-ver" select="'3.0'"/>
 
 <!--
 
  HELPER DEFINITIONS
 
  -->
 
 <cibtr:map>
 
   <!--
    Target tag:     cluster_property_set
    Object:         ./nvpair/@name
    Selector ctxt:  ./nvpair/@value
    Move ctxt:      op_defaults ~ /cib/configuration/op_defaults
                    rsc_defaults ~ /cib/configuration/rsc_defaults
    -->
   <cibtr:table for="cluster-properties" msg-prefix="Cluster properties"
                where-cases="op_defaults|rsc_defaults">
     <cibtr:replace what="cluster-infrastructure"
                    with=""
                    in-case-of="heartbeat|openais|classic openais|classic openais (with plugin)|cman"
                    msg-extra="corosync (2+) infrastructure can be used instead, though the value is not of significance"/>
 
     <cibtr:replace what="cluster_recheck_interval"
                    with="cluster-recheck-interval"/>
     <cibtr:replace what="dc_deadtime"
                    with="dc-deadtime"/>
 
     <cibtr:replace what="default-action-timeout"
                    with="timeout"
                    where="op_defaults"/>
     <cibtr:replace what="default_action_timeout"
                    with="timeout"
                    where="op_defaults"/>
 
     <cibtr:replace what="default-migration-threshold"
                    with=""
                    msg-extra="migration-threshold in rsc_defaults can be configured instead"/>
     <cibtr:replace what="default_migration_threshold"
                    with=""
                    msg-extra="migration-threshold in rsc_defaults can be configured instead"/>
 
     <cibtr:replace what="default-resource-stickiness"
                    with="resource-stickiness"
                    where="rsc_defaults"/>
     <cibtr:replace what="default_resource_stickiness"
                    with="resource-stickiness"
                    where="rsc_defaults"/>
 
     <cibtr:replace what="default-resource-failure-stickiness"
                    with="migration-threshold"
                    where="rsc_defaults"
                    in-case-of="-INFINITY"
                    redefined-as="1"/>
     <cibtr:replace what="default-resource-failure-stickiness"
                    with=""
                    msg-extra="migration-threshold in rsc_defaults can be configured instead"/>
     <cibtr:replace what="default_resource_failure_stickiness"
                    with="migration-threshold"
                    where="rsc_defaults"
                    in-case-of="-INFINITY"
                    redefined-as="1"/>
     <cibtr:replace what="default_resource_failure_stickiness"
                    with=""
                    msg-extra="migration-threshold in rsc_defaults can be configured instead"/>
 
     <cibtr:replace what="election_timeout"
                    with="election-timeout"/>
     <cibtr:replace what="expected-quorum-votes"
                    with=""
                    msg-extra="corosync (2+) infrastructure tracks quorum on its own"/>
 
     <cibtr:replace what="is-managed-default"
                    with="is-managed"
                    where="rsc_defaults"/>
     <cibtr:replace what="is_managed_default"
                    with="is-managed"
                    where="rsc_defaults"/>
     <cibtr:replace what="no_quorum_policy"
                    with="no-quorum-policy"/>
 
     <cibtr:replace what="notification-agent"
                    with=""
                    msg-extra="standalone alerts can be configured instead"/>
     <cibtr:replace what="notification-recipient"
                    with=""
                    msg-extra="standalone alerts can be configured instead"/>
 
     <cibtr:replace what="remove_after_stop"
                    with="remove-after-stop"/>
     <cibtr:replace what="shutdown_escalation"
                    with="shutdown-escalation"/>
     <cibtr:replace what="startup_fencing"
                    with="startup-fencing"/>
     <cibtr:replace what="stonith_action"
                    with="stonith-action"/>
     <cibtr:replace what="stonith_enabled"
                    with="stonith-enabled"/>
     <cibtr:replace what="stop_orphan_actions"
                    with="stop-orphan-actions"/>
     <cibtr:replace what="stop_orphan_resources"
                    with="stop-orphan-resources"/>
     <cibtr:replace what="symmetric_cluster"
                    with="symmetric-cluster"/>
     <cibtr:replace what="transition_idle_timeout"
                    with="cluster-delay"/>
   </cibtr:table>
 
   <!--
    Target tag:     node
    Object:         ./@*
    Selector ctxt:  ./@*
    Move ctxt:      N/A
    -->
   <cibtr:table for="cluster-node" msg-prefix="Cluster node">
     <cibtr:replace what="type"
                    with="type"
                    in-case-of="normal"
                    redefined-as="member"/>
   </cibtr:table>
 
   <!--
    Target tag:     primitive
                    template
    Object:         ./instance_attributes/nvpair/@name
    Selector ctxt:  N/A
    Move ctxt:      N/A
    -->
   <cibtr:table for="resource-instance-attributes" msg-prefix="Resource instance_attributes">
+    <cibtr:replace what="pcmk_arg_map"
+                   with=""/>
+    <!-- simplified as pcmk_arg_map can encode multiple
+         comma-separated pairs (everything would be dropped then,
+         except for a single dangling case: "port" coming first) -->
+    <cibtr:replace what="pcmk_arg_map"
+                   with="pcmk_host_argument"
+                   in-case-of-droppable-prefix="port:"/>
+
     <cibtr:replace what="pcmk_list_cmd"
                    with="pcmk_list_action"/>
     <cibtr:replace what="pcmk_monitor_cmd"
                    with="pcmk_monitor_action"/>
     <cibtr:replace what="pcmk_off_cmd"
                    with="pcmk_off_action"/>
     <cibtr:replace what="pcmk_on_cmd"
                    with="pcmk_on_action"/>
     <cibtr:replace what="pcmk_reboot_cmd"
                    with="pcmk_reboot_action"/>
     <cibtr:replace what="pcmk_status_cmd"
                    with="pcmk_status_action"/>
   </cibtr:table>
 
   <!--
    Target tag:     primitive
                    template
    Object:         ./operations/op/@*
                    ./operations/op/meta_attributes/nvpair/@name
    Selector ctxt:  ./operations/op/@name
    Move ctxt:      meta_attributes ~ ./meta_attributes/nvpair
    -->
   <cibtr:table for="resources-operation" msg-prefix="Resources-operation"
                where-cases="meta_attributes">
     <cibtr:replace what="requires"
                    with=""
                    msg-extra="only start/promote operation taken into account"/>
     <cibtr:replace what="requires"
                    with="requires"
                    in-case-of="start|promote"
                    where="meta_attributes"/>
   </cibtr:table>
 
   <!--
    Target tag:     rsc_colocation
    Object:         ./@*
    Selector ctxt:  N/A
    Move ctxt:      N/A
    -->
   <cibtr:table for="constraints-colocation" msg-prefix="Constraints-colocation">
     <cibtr:replace what="score-attribute"
                    with=""
                    msg-extra="was actually never in effect"/>
     <cibtr:replace what="score-attribute-mangle"
                    with=""
                    msg-extra="was actually never in effect"/>
   </cibtr:table>
 
 </cibtr:map>
 
 <xsl:variable name="MapClusterProperties"
               select="document('')/xsl:stylesheet
                         /cibtr:map/cibtr:table[
                           @for = 'cluster-properties'
                         ]"/>
 
 <xsl:variable name="MapClusterNode"
               select="document('')/xsl:stylesheet
                         /cibtr:map/cibtr:table[
                           @for = 'cluster-node'
                         ]"/>
 
 <xsl:variable name="MapResourceInstanceAttributes"
               select="document('')/xsl:stylesheet
                         /cibtr:map/cibtr:table[@for = 'resource-instance-attributes'
                       ]"/>
 
 <xsl:variable name="MapResourcesOperation"
               select="document('')/xsl:stylesheet
                         /cibtr:map/cibtr:table[
                           @for = 'resources-operation'
                         ]"/>
 
 <xsl:variable name="MapConstraintsColocation"
               select="document('')/xsl:stylesheet
                         /cibtr:map/cibtr:table[
                           @for = 'constraints-colocation'
                         ]"/>
 
 <!--
 
  GENERIC UTILITIES
 
  -->
 
 <!--
  Plain identity template
 
  Merely implicit-context-driven, no arguments.
  -->
 <xsl:template name="HelperIdentity">
   <xsl:copy>
     <xsl:apply-templates select="@*|node()"/>
   </xsl:copy>
 </xsl:template>
 
 <!--
  Emit an message about the replacement, sanity checking the source definitions
 
  Merely parameter driven, no implicit context taken into account:
  - Context: optional message prefix
  - Replacement: selected subset of cibtr:map's leaves
                 (it's considered a hard error if consists of more than 1 item)
  -->
 <xsl:template name="MapMsg">
   <xsl:param name="Context" select="''"/>
   <xsl:param name="Replacement"/>
   <xsl:choose>
     <xsl:when test="not($Replacement)"/>
     <xsl:when test="count($Replacement) != 1">
       <xsl:message terminate="yes">
         <xsl:value-of select="concat('INTERNAL ERROR:',
                                      $Replacement/../@msg-prefix,
                                      ': count($Replacement) != 1',
                                      ' does not hold (',
                                      count($Replacement), ')')"/>
       </xsl:message>
     </xsl:when>
     <xsl:otherwise>
       <xsl:variable name="MsgPrefix" select="concat(
                                                ($Replacement|$Replacement/..)
                                                  /@msg-prefix, ': '
                                              )"/>
       <xsl:message>
         <xsl:value-of select="$MsgPrefix"/>
         <xsl:if test="$Context">
           <xsl:value-of select="concat($Context, ': ')"/>
         </xsl:if>
         <xsl:choose>
           <xsl:when test="string($Replacement/@with)">
             <xsl:choose>
               <xsl:when test="string($Replacement/@where)">
                 <xsl:if test="not(
                                 contains(
                                   concat('|', $Replacement/../@where-cases, '|'),
                                   concat('|', $Replacement/@where, '|')
                                 )
                               )">
                   <xsl:message terminate="yes">
                     <xsl:value-of select="concat('INTERNAL ERROR:',
                                                  $Replacement/../@msg-prefix,
                                                  ': $Replacement/@where (',
                                                  $Replacement/@where, ') not in ',
                                                  concat('|',
                                                  $Replacement/../@where-cases,
                                                  '|'))"/>
                   </xsl:message>
                 </xsl:if>
                 <xsl:value-of select="concat('moving ', $Replacement/@what,
                                              ' under ', $Replacement/@where)"/>
               </xsl:when>
               <xsl:when test="$Replacement/@with = $Replacement/@what">
                 <xsl:value-of select="concat('keeping ', $Replacement/@what)"/>
               </xsl:when>
               <xsl:otherwise>
                 <xsl:value-of select="concat('renaming ', $Replacement/@what)"/>
               </xsl:otherwise>
             </xsl:choose>
             <xsl:value-of select="concat(' as ', $Replacement/@with)"/>
             <xsl:if test="$Replacement/@where">
               <xsl:value-of select="' unless already defined there'"/>
             </xsl:if>
           </xsl:when>
           <xsl:otherwise>
             <xsl:value-of select="concat('dropping ', $Replacement/@what)"/>
           </xsl:otherwise>
         </xsl:choose>
         <xsl:if test="string($Replacement/@redefined-as)">
           <xsl:value-of select="concat(', redefined as ',
                                        $Replacement/@redefined-as)"/>
           <xsl:if test="$Replacement/@in-case-of">
             <xsl:value-of select="','"/>
           </xsl:if>
         </xsl:if>
-	<xsl:choose>
+        <xsl:choose>
           <xsl:when test="string($Replacement/@in-case-of)">
             <xsl:value-of select="concat(' for matching ',
                                          $Replacement/@in-case-of)"/>
           </xsl:when>
           <xsl:when test="$Replacement/@in-case-of">
             <xsl:value-of select="' for matching &quot;empty string&quot;'"/>
           </xsl:when>
-	</xsl:choose>
+          <xsl:when test="$Replacement/@in-case-of-droppable-prefix">
+            <xsl:value-of select="concat(' for matching ',
+                                    $Replacement/@in-case-of-droppable-prefix,
+                                    ' prefix that will, meanwhile, get dropped'
+                                  )"/>
+          </xsl:when>
+        </xsl:choose>
       </xsl:message>
       <xsl:if test="$Replacement/@msg-extra">
         <xsl:message>
           <xsl:value-of select="concat($MsgPrefix, '... ',
                                        $Replacement/@msg-extra)"/>
         </xsl:message>
       </xsl:if>
     </xsl:otherwise>
   </xsl:choose>
 </xsl:template>
 
 <!--
  Produce a denormalized space if not present in the input (cf. trick A.)
 
  Merely parameter driven, no implicit context taken into account:
  - Source: input selection or result tree fragment to evaluate
  - ResultTreeFragment: optional self-explanatory flag related to Source
  -->
 <xsl:template name="HelperDenormalizedSpace">
   <xsl:param name="Source"/>
   <xsl:param name="ResultTreeFragment" select="false()"/>
   <xsl:choose>
     <xsl:when test="not($ResultTreeFragment)">
       <!-- intention here is that immediately surrounding text (mostly expected
            to be just indenting whitespace) and comments will be preserved;
            in case no denormalized space is present, " " is injected -->
       <xsl:variable name="ExistingSpace"
                     select="$Source/preceding-sibling::node()[
                               (
                                 self::comment()
                                 or
                                 self::text()
                               )
                               and
                               generate-id(following-sibling::*[1])
                               = generate-id($Source)
                             ]"/>
       <xsl:copy-of select="$ExistingSpace"/>
       <xsl:if test="not(
                       $ExistingSpace/self::text()[
                         normalize-space(.) != string(.)
                       ]
                     )">
         <xsl:text> </xsl:text>
       </xsl:if>
     </xsl:when>
     <xsl:when test="normalize-space($Source)
                     != string($Source)">
       <xsl:text> </xsl:text>
     </xsl:when>
   </xsl:choose>
 </xsl:template>
 
 <!--
 
  TRANSFORMATION HELPERS
 
  considerations, limitations, etc.:
  1. the transformations tries to preserve as much of the original XML
     as possible, incl. whitespace text/indentation and comments, but
     at times (corner cases of tricks A. + B. below), this needs to be
     sacrificed, e.g., distorting nice indentation, hence if the
     perfection is the goal:
     - user of the transformation can feed the minimized version of
       the XML (no denormalized/any white-space present)
     - user of the transformation can (re-)pretty-print the outcome
       afterwards
 
  tricks and conventions used:
  A. callable templates only return Result Tree Fragments, which means
     the only operations allowed are those looking at the underlying,
     virtual node-set, and since we need to discern their non-void
     production (i.e. on successful match/es), we use this trick:
     - ensure the template will not propagate any denormalized whitespace
     - inject denormalized whitespace (superfluous space) artificially
       to mark successful production (but see B. below)
     - with the template production, here stored as Var variable,
       we test "normalize-space($Var) != $Var" condition to detect
       non-void production, mainly intended to see whether to emit
       the enclosing element at all (with the goal of not leaving
       superfluous elements behind needlessly)
  B. [extension over A.] to eliminate distorted indentation
     (cf. consideration 1.), additional reuse of these callable
     templates is introduced: the template can recursively call
     itself with a special flag (InnerSimulation) as an oracle to
     see to whether non-void production will ensue (all pre-existing
     denormalized whitespace is forcefully removed in this mode),
     and if positive, all such inner pre-existing whitespace is
     then preserved in this outer=main invocation
  C. [extension over B.] when checking the non-void production
     (via InnerSimulation), beside the injected denormalized whitespace,
     we can also inject particular strings, which the callsite of such
     simulation can, in addition, inspect for paricular string
     occurrences, e.g. to prevent clashes on the production coming
     from multiple sources
  D. not only to honour DRY principle and to avoid inner entropy, it's
     often useful to make callable template bimodal, e.g., when the
     production is generated in the "what's to stay in place" vs.
     "what's to be propagated (combined with previous, effectively
     moved) at this other part of the tree" contexts; for such cases,
     there's usually InverseMode parameter to be assigned true()
     (implicit default) and false(), respectively
 
  -->
 
 <!--
  Source ctxt:    cluster_property_set
  Target ctxt:    cluster_property_set
  Target-inv ctxt:/cib/configuration/(op_defaults|rsc_defaults)
                  [cluster_property_set -> meta_attributes]
  Dependencies:   N/A
  -->
 <xsl:template name="ProcessClusterProperties">
   <xsl:param name="Source"/>
   <xsl:param name="InverseMode" select="false()"/>
   <xsl:param name="InnerSimulation" select="false()"/>
 
   <xsl:variable name="InnerPass">
     <xsl:choose>
       <xsl:when test="$InnerSimulation">
         <xsl:value-of select="''"/>
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source" select="$Source"/>
           <xsl:with-param name="InverseMode" select="$InverseMode"/>
           <xsl:with-param name="InnerSimulation" select="true()"/>
         </xsl:call-template>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:variable>
 
   <xsl:for-each select="$Source/node()">
     <xsl:choose>
       <xsl:when test="self::text()">
         <!-- cf. trick A. (consideration 1.) -->
         <xsl:choose>
           <xsl:when test="normalize-space($InnerPass)
                           != $InnerPass
                           and
                           (
                             not(following-sibling::nvpair)
                             or
                             generate-id(following-sibling::nvpair[1])
                             != generate-id(following-sibling::*[1])
                           )">
             <xsl:value-of select="."/>
           </xsl:when>
           <xsl:otherwise>
             <xsl:value-of select="normalize-space(.)"/>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:when>
       <xsl:when test="self::nvpair">
         <xsl:variable name="Replacement"
                       select="$MapClusterProperties/cibtr:replace[
                                 @what = current()/@name
                                 and
                                 (
                                   (
                                     @in-case-of
                                     and
                                     contains(concat('|', @in-case-of, '|'),
                                              concat('|', current()/@value, '|'))
                                   )
                                   or
                                   (
                                     not(@in-case-of)
                                     and
                                     not(
                                       $MapClusterProperties/cibtr:replace[
                                         @what = current()/@name
                                         and
                                         @in-case-of
                                         and
                                         contains(concat('|', @in-case-of, '|'),
                                                  concat('|', current()/@value, '|'))
                                       ]
                                     )
                                   )
                                 )
                               ]"/>
         <xsl:if test="not($InverseMode or $InnerSimulation)">
           <xsl:call-template name="MapMsg">
             <xsl:with-param name="Context" select="@id"/>
             <xsl:with-param name="Replacement" select="$Replacement"/>
           </xsl:call-template>
         </xsl:if>
         <xsl:choose>
           <xsl:when test="$Replacement
                           and
                           (
                             not(string($Replacement/@with))
                             or
                             $Replacement/@where
                           )">
             <!-- drop (possibly just move over) -->
             <xsl:if test="$Replacement/@where
                           and
                           (
                             (
                               normalize-space($InverseMode)
                               and
                               $Replacement/@where = $InverseMode
                             )
                             or
                             (
                               not(normalize-space($InverseMode))
                               and
                               (true() or count($InverseMode))
                               and
                               not(
                                 $InverseMode/nvpair[
                                   @name = $Replacement/@with
                                 ]
                               )
                               and
                               $Replacement/@where = name($InverseMode/..)
                             )
                           )">
               <xsl:call-template name="HelperDenormalizedSpace">
                 <xsl:with-param name="Source" select="."/>
               </xsl:call-template>
               <xsl:copy>
                 <xsl:for-each select="@*">
                   <xsl:choose>
                     <xsl:when test="name() = 'name'">
                       <xsl:attribute name="{name()}">
                         <xsl:value-of select="$Replacement/@with"/>
                       </xsl:attribute>
                     </xsl:when>
                     <xsl:when test="string($Replacement/@redefined-as)
                                     and
                                     name() = 'value'">
                       <xsl:attribute name="{name()}">
                         <xsl:value-of select="$Replacement/@redefined-as"/>
                       </xsl:attribute>
                     </xsl:when>
                     <xsl:otherwise>
                       <xsl:copy/>
                     </xsl:otherwise>
                   </xsl:choose>
                 </xsl:for-each>
               </xsl:copy>
             </xsl:if>
           </xsl:when>
           <xsl:when test="$InverseMode"/>
           <xsl:when test="$Replacement">
             <xsl:call-template name="HelperDenormalizedSpace">
               <xsl:with-param name="Source" select="."/>
             </xsl:call-template>
             <xsl:copy>
               <xsl:for-each select="@*">
                 <xsl:choose>
                   <xsl:when test="name() = 'name'">
                     <xsl:attribute name="{name()}">
                       <xsl:value-of select="$Replacement/@with"/>
                     </xsl:attribute>
                   </xsl:when>
                   <xsl:when test="string($Replacement/@redefined-as)
                                   and
                                   name() = 'value'">
                     <xsl:attribute name="{name()}">
                       <xsl:value-of select="$Replacement/@redefined-as"/>
                     </xsl:attribute>
                   </xsl:when>
                   <xsl:otherwise>
                     <xsl:copy/>
                   </xsl:otherwise>
                 </xsl:choose>
               </xsl:for-each>
             </xsl:copy>
           </xsl:when>
           <xsl:otherwise>
             <xsl:call-template name="HelperDenormalizedSpace">
               <xsl:with-param name="Source" select="."/>
             </xsl:call-template>
             <xsl:call-template name="HelperIdentity"/>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:when>
       <xsl:when test="$InverseMode
                       or
                       self::comment()">
         <!-- drop -->
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="HelperIdentity"/>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:for-each>
 </xsl:template>
 
 <!--
  Source ctxt:    (primitive|template)/instance_attributes
  Target ctxt:    (primitive|template)/instance_attributes
  Target-inv ctxt:N/A
  Dependencies:   N/A
  -->
 <xsl:template name="ProcessRscInstanceAttributes">
   <xsl:param name="Source"/>
   <xsl:param name="InverseMode" select="false()"/>
   <xsl:param name="InnerSimulation" select="false()"/>
 
   <xsl:variable name="InnerPass">
     <xsl:choose>
       <xsl:when test="$InverseMode
                       or
                       $InnerSimulation">
         <xsl:value-of select="''"/>
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="ProcessRscInstanceAttributes">
           <xsl:with-param name="Source" select="$Source"/>
           <xsl:with-param name="InnerSimulation" select="true()"/>
         </xsl:call-template>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:variable>
 
   <!-- B: special-casing nvpair -->
   <xsl:for-each select="$Source/node()">
     <xsl:choose>
       <xsl:when test="self::text()
                       and
                       not($InverseMode)">
         <!-- cf. trick A. (consideration 1.) -->
         <xsl:choose>
           <xsl:when test="normalize-space($InnerPass)
                           != $InnerPass
                           and
                           (
                             not(following-sibling::nvpair)
                             or
                             generate-id(following-sibling::nvpair[1])
                             != generate-id(following-sibling::*[1])
                           )">
             <xsl:value-of select="."/>
           </xsl:when>
           <xsl:otherwise>
             <xsl:value-of select="normalize-space(.)"/>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:when>
       <xsl:when test="self::nvpair">
         <xsl:variable name="Replacement"
                       select="$MapResourceInstanceAttributes/cibtr:replace[
                                 @what = current()/@name
                                 and
                                 (
                                   (
                                     @in-case-of
                                     and
                                     contains(concat('|', @in-case-of, '|'),
                                              concat('|', current()/@value, '|'))
                                   )
                                   or
+                                  (
+                                    @in-case-of-droppable-prefix
+                                    and
+                                    starts-with(current()/@value,
+                                                @in-case-of-droppable-prefix)
+                                    and
+                                    not(
+                                      contains(current()/@value, ',')
+                                    )
+                                  )
+                                  or
                                   (
                                     not(@in-case-of)
                                     and
+                                    not(@in-case-of-droppable-prefix)
+                                    and
                                     not(
                                       $MapResourceInstanceAttributes/cibtr:replace[
                                         @what = current()/@name
                                         and
-                                        @in-case-of
-                                        and
-                                        contains(concat('|', @in-case-of, '|'),
-                                                 concat('|', current()/@value, '|'))
+                                        (
+                                          (
+                                            @in-case-of
+                                            and
+                                            contains(concat('|', @in-case-of, '|'),
+                                                     concat('|', current()/@value, '|'))
+                                          )
+                                          or
+                                          (
+                                            @in-case-of-droppable-prefix
+                                            and
+                                            starts-with(current()/@value,
+                                                        @in-case-of-droppable-prefix)
+                                            and
+                                            not(
+                                              contains(current()/@value, ',')
+                                            )
+                                          )
+                                        )
                                       ]
                                     )
                                   )
                                 )
                               ]"/>
         <xsl:if test="not($InverseMode or $InnerSimulation)">
           <xsl:call-template name="MapMsg">
             <xsl:with-param name="Context" select="@id"/>
             <xsl:with-param name="Replacement" select="$Replacement"/>
           </xsl:call-template>
         </xsl:if>
         <xsl:choose>
           <xsl:when test="$Replacement
                           and
                           (
                             not(string($Replacement/@with))
                             or
                             $Replacement/@where
                           )">
             <!-- drop (move-over code missing) -->
           </xsl:when>
           <xsl:when test="$InverseMode"/>
           <xsl:when test="$Replacement">
             <!-- plain rename (space helper?) -->
             <xsl:call-template name="HelperDenormalizedSpace">
               <xsl:with-param name="Source" select="."/>
             </xsl:call-template>
             <xsl:copy>
               <xsl:for-each select="@*">
                 <xsl:choose>
                   <xsl:when test="name() = 'name'">
                     <xsl:attribute name="{name()}">
                       <xsl:value-of select="$Replacement/@with"/>
                     </xsl:attribute>
                   </xsl:when>
                   <xsl:when test="string($Replacement/@redefined-as)
                                   and
                                   name() = 'value'">
                     <xsl:attribute name="{name()}">
                       <xsl:value-of select="$Replacement/@redefined-as"/>
                     </xsl:attribute>
                   </xsl:when>
+                  <xsl:when test="string($Replacement/@in-case-of-droppable-prefix)
+                                  and
+                                  name() = 'value'">
+                    <xsl:attribute name="{name()}">
+                      <xsl:value-of select="substring-after(
+                                              ., $Replacement/@in-case-of-droppable-prefix
+                                            )"/>
+                    </xsl:attribute>
+                  </xsl:when>
                   <xsl:otherwise>
                     <xsl:copy/>
                   </xsl:otherwise>
                 </xsl:choose>
               </xsl:for-each>
             </xsl:copy>
           </xsl:when>
           <xsl:otherwise>
             <xsl:call-template name="HelperDenormalizedSpace">
               <xsl:with-param name="Source" select="."/>
             </xsl:call-template>
             <xsl:copy>
               <xsl:apply-templates select="@*|node()"/>
             </xsl:copy>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:when>
       <xsl:when test="$InverseMode
                       or
                       self::comment()">
         <!-- drop -->
       </xsl:when>
       <xsl:otherwise>
         <xsl:copy>
           <xsl:apply-templates select="@*|node()"/>
         </xsl:copy>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:for-each>
   <!-- E: special-casing nvpair -->
 </xsl:template>
 
 <!--
  Source ctxt:    (primitive|template)/operations/op/meta_attributes
  Target ctxt:    (primitive|template)/operations/op/meta_attributes
  Target-inv ctxt:(primitive|template)/meta_attributes
  Dependencies:   N/A
  -->
 <xsl:template name="ProcessNonattrOpMetaAttributes">
   <xsl:param name="Source"/>
   <xsl:param name="InverseMode" select="false()"/>
   <xsl:param name="InnerSimulation" select="false()"/>
 
   <xsl:variable name="EnclosingTag" select="../../.."/>
 
   <xsl:variable name="InnerPass">
     <xsl:choose>
       <xsl:when test="$InverseMode
                       or
                       $InnerSimulation">
         <xsl:value-of select="''"/>
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="ProcessNonattrOpMetaAttributes">
           <xsl:with-param name="Source" select="$Source"/>
           <xsl:with-param name="InnerSimulation" select="true()"/>
         </xsl:call-template>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:variable>
 
   <xsl:for-each select="$Source/node()">
     <xsl:choose>
       <xsl:when test="self::text()
                       and
                       not($InverseMode)">
         <!-- cf. trick A. (consideration 1.) -->
         <xsl:choose>
           <xsl:when test="normalize-space($InnerPass)
                           != $InnerPass
                           and
                           (
                             not(following-sibling::nvpair)
                             or
                             generate-id(following-sibling::nvpair[1])
                             != generate-id(following-sibling::*[1])
                           )">
             <xsl:value-of select="."/>
           </xsl:when>
           <xsl:otherwise>
             <xsl:value-of select="normalize-space(.)"/>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:when>
       <xsl:when test="self::nvpair">
         <xsl:variable name="Replacement"
                       select="$MapResourcesOperation/cibtr:replace[
                                 @what = current()/@name
                                 and
                                 (
                                   (
                                     @in-case-of
                                     and
                                     contains(concat('|', @in-case-of, '|'),
                                              concat('|', current()/../../@name, '|'))
                                   )
                                   or
                                   (
                                     not(@in-case-of)
                                     and
                                     not(
                                       $MapResourcesOperation/cibtr:replace[
                                         @what = current()/@name
                                         and
                                         @in-case-of
                                         and
                                         contains(concat('|', @in-case-of, '|'),
                                                  concat('|', current()/../../@name, '|'))
                                       ]
                                     )
                                   )
                                 )
                               ]"/>
         <xsl:if test="not($InverseMode or $InnerSimulation)">
           <xsl:call-template name="MapMsg">
             <xsl:with-param name="Context" select="../../@id"/>
             <xsl:with-param name="Replacement" select="$Replacement"/>
           </xsl:call-template>
         </xsl:if>
         <xsl:choose>
           <xsl:when test="$Replacement
                           and
                           (
                             not(string($Replacement/@with))
                             or
                             $Replacement/@where
                           )">
             <!-- drop (possibly just move over) -->
             <xsl:variable name="SimulateAttrOverrides">
               <xsl:for-each select="../../../op">
                 <xsl:call-template name="ProcessAttrOpMetaAttributes">
                   <xsl:with-param name="Source" select="."/>
                   <xsl:with-param name="InverseMode" select="true()"/>
                   <xsl:with-param name="InnerSimulation" select="true()"/>
                 </xsl:call-template>
               </xsl:for-each>
             </xsl:variable>
             <xsl:if test="$InverseMode
                           and
                           not(
                             contains($SimulateAttrOverrides,
                                      concat(@name, ' '))
                           )">
               <!-- do not override; do not collide with:
                    - newly added from op/@* (see last condition above)
                    - existing - actually subsumed with the previous point
                    - successors sourced like this (see below) -->
               <xsl:variable name="SimulateFollowingSiblings">
                 <!-- cf. similar handling in ProcessAttrOpMetaAttributes,
                      but this is more convoluted -->
                 <xsl:for-each select="(../following-sibling::meta_attributes
                                        |../../following-sibling::op/meta_attributes)[
                                         not(rule)
                                       ]">
                   <xsl:call-template name="ProcessNonattrOpMetaAttributes">
                     <xsl:with-param name="Source" select="."/>
                     <xsl:with-param name="InverseMode" select="true()"/>
                     <xsl:with-param name="InnerSimulation" select="true()"/>
                   </xsl:call-template>
                 </xsl:for-each>
               </xsl:variable>
               <xsl:if test="$Replacement/@where = 'meta_attributes'
                             and
                             not(
                               $EnclosingTag/meta_attributes[
                                 not(rule)
                                 and
                                 nvpair/@name = $Replacement/@with
                               ]
                             )
                             and
                             not(
                               contains($SimulateFollowingSiblings,
                                        concat(@name, ' '))
                             )">
                 <!-- cf. trick C. (indicate for inverse mode) -->
                 <xsl:choose>
                   <xsl:when test="$InnerSimulation">
                     <xsl:value-of select="concat(@name, ' ')"/>
                   </xsl:when>
                   <xsl:otherwise>
                     <xsl:text> </xsl:text>
                     <xsl:copy>
                       <xsl:apply-templates select="@*"/>
                     </xsl:copy>
                   </xsl:otherwise>
                 </xsl:choose>
               </xsl:if>
             </xsl:if>
           </xsl:when>
           <xsl:when test="$Replacement">
             <xsl:message terminate="yes">
               <xsl:value-of select="concat('INTERNAL ERROR: ',
                                            $Replacement/../@msg-prefix,
                                            ': no in-situ rename',
                                            ' does not hold (',
                                            not(($InverseMode)), ')')"/>
             </xsl:message>
           </xsl:when>
           <xsl:when test="$InverseMode"/>
           <xsl:otherwise>
             <xsl:call-template name="HelperDenormalizedSpace">
               <xsl:with-param name="Source" select="."/>
             </xsl:call-template>
             <xsl:call-template name="HelperIdentity"/>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:when>
       <xsl:when test="$InverseMode
                       or
                       self::comment()">
         <!-- drop -->
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="HelperIdentity"/>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:for-each>
 </xsl:template>
 
 <!--
  Source ctxt:    (primitive|template)/operations/op
  Target ctxt:    (primitive|template)/operations/op/meta_attributes
  Target-inv ctxt:(primitive|template)/meta_attributes
  Dependencies:   ProcessNonattrOpMetaAttributes [non-inverse only]
  -->
 <xsl:template name="ProcessAttrOpMetaAttributes">
   <xsl:param name="Source"/>
   <xsl:param name="InverseMode" select="false()"/>
   <xsl:param name="InnerSimulation" select="false()"/>
 
   <xsl:variable name="EnclosingTag" select="../.."/>
 
   <xsl:variable name="InnerPass">
     <xsl:choose>
       <xsl:when test="$InnerSimulation">
         <xsl:value-of select="''"/>
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="ProcessAttrOpMetaAttributes">
           <xsl:with-param name="Source" select="$Source"/>
           <xsl:with-param name="InverseMode" select="$InverseMode"/>
           <xsl:with-param name="InnerSimulation" select="true()"/>
         </xsl:call-template>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:variable>
 
   <xsl:if test="(
                   $InverseMode
                   and
                   (
                     $InnerSimulation
                     or
                     normalize-space($InnerPass)
                     != string($InnerPass)
                   )
                 )
                 or
                 not($InverseMode)">
     <xsl:if test="$InverseMode
                   and
                   not($InnerSimulation)">
       <xsl:call-template name="HelperDenormalizedSpace">
         <xsl:with-param name="Source" select="$InnerPass"/>
         <xsl:with-param name="ResultTreeFragment" select="true()"/>
       </xsl:call-template>
     </xsl:if>
 
     <!-- cannot combine "copy" with creating a new element, hence we mimic
          "copy" with recreating the element anew, while still using just
          a single for-each loop -->
     <xsl:variable name="ParentName">
       <xsl:choose>
         <xsl:when test="not($InverseMode)">
           <xsl:value-of select="name()"/>
         </xsl:when>
         <xsl:otherwise>
           <xsl:value-of select="'nvpair'"/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:variable>
     <xsl:element name="{$ParentName}">
     <!-- B: special-casing @* -->
     <xsl:for-each select="@*">
       <xsl:variable name="Replacement"
                     select="$MapResourcesOperation/cibtr:replace[
                               @what = name(current())
                               and
                               (
                                 (
                                   @in-case-of
                                   and
                                   contains(concat('|', @in-case-of, '|'),
                                            concat('|', current()/../@name, '|'))
                                 )
                                 or
                                 (
                                   not(@in-case-of)
                                   and
                                   not(
                                     $MapResourcesOperation/cibtr:replace[
                                       @what = name(current())
                                       and
                                       @in-case-of
                                       and
                                       contains(concat('|', @in-case-of, '|'),
                                                concat('|', current()/../@name, '|'))
                                     ]
                                   )
                                 )
                               )
                             ]"/>
       <xsl:if test="not($InverseMode or $InnerSimulation)">
         <xsl:call-template name="MapMsg">
           <xsl:with-param name="Context" select="../../@id"/>
           <xsl:with-param name="Replacement" select="$Replacement"/>
         </xsl:call-template>
       </xsl:if>
       <xsl:choose>
         <!-- use inner simulation to find out if success,
              then emit also extra denormalized space -->
         <xsl:when test="$InverseMode
                         and
                         $Replacement/@where = 'meta_attributes'
                         and
                         not(
                           $EnclosingTag/meta_attributes[
                             not(rule)
                             and
                             nvpair/@name = $Replacement/@with
                           ]
                         )">
           <!-- do not override; do not collide with:
                - existing (see last condition above)
                - successors sourced like this (see below) -->
           <xsl:variable name="SimulateFollowingSiblings">
             <xsl:for-each select="../following-sibling::op">
               <xsl:call-template name="ProcessAttrOpMetaAttributes">
                 <xsl:with-param name="Source" select="."/>
                 <xsl:with-param name="InverseMode" select="true()"/>
                 <xsl:with-param name="InnerSimulation" select="true()"/>
               </xsl:call-template>
             </xsl:for-each>
           </xsl:variable>
           <xsl:if test="not(contains($SimulateFollowingSiblings,
                                      concat(name(), ' ')))">
             <!-- fix concurrent op/@* sources (these themselves are winning
                  over sources from meta_attributes -->
             <xsl:choose>
               <xsl:when test="$InnerSimulation">
                 <!-- cf. trick C. (indicate for inverse mode) -->
                 <xsl:value-of select="concat(name(), ' ')"/>
               </xsl:when>
               <xsl:otherwise>
                 <xsl:attribute name="id">
                   <xsl:value-of select="concat('_2TO3_', ../@id, '-meta-',
                                                $Replacement/@with)"/>
                 </xsl:attribute>
                 <xsl:attribute name="name">
                   <xsl:value-of select="$Replacement/@with"/>
                 </xsl:attribute>
                 <xsl:attribute name="value">
                   <xsl:value-of select="."/>
                 </xsl:attribute>
               </xsl:otherwise>
             </xsl:choose>
           </xsl:if>
         </xsl:when>
         <xsl:when test="$InverseMode"/>
         <xsl:when test="$Replacement
                         and
                         (
                           not(string($Replacement/@with))
                           or
                           $Replacement/@where
                         )">
           <!-- drop (possibly just move over) -->
         </xsl:when>
         <xsl:when test="$Replacement">
           <xsl:message terminate="yes">
             <xsl:value-of select="concat('INTERNAL ERROR: ',
                                          $Replacement/../@msg-prefix,
                                          ': no in-situ rename',
                                          ' does not hold')"/>
           </xsl:message>
         </xsl:when>
         <xsl:otherwise>
           <!--xsl:attribute name="{name()}">
             <xsl:value-of select="."/>
           </xsl:attribute-->
           <xsl:copy/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:for-each>
 
     <xsl:if test="not($InverseMode)">
       <!-- B: special-casing meta_attributes -->
       <xsl:for-each select="$Source/node()">
         <xsl:choose>
           <xsl:when test="self::text()
                           and
                           not($InverseMode)">
             <!-- cf. trick A. (consideration 1.) -->
             <xsl:choose>
               <xsl:when test="normalize-space($InnerPass)
                               != $InnerPass
                               and
                               (
                                 not(following-sibling::nvpair)
                                 or
                                 generate-id(following-sibling::nvpair[1])
                                 != generate-id(following-sibling::*[1])
                               )">
                 <xsl:value-of select="."/>
               </xsl:when>
               <xsl:otherwise>
                 <xsl:value-of select="normalize-space(.)"/>
               </xsl:otherwise>
             </xsl:choose>
           </xsl:when>
           <xsl:when test="self::meta_attributes">
             <xsl:variable name="ProcessedOpMetaAttributes">
               <xsl:call-template name="ProcessNonattrOpMetaAttributes">
                 <xsl:with-param name="Source" select="."/>
                 <xsl:with-param name="InnerSimulation" select="$InnerSimulation"/>
               </xsl:call-template>
             </xsl:variable>
             <!-- cf. trick A. -->
             <xsl:if test="normalize-space($ProcessedOpMetaAttributes)
                           != $ProcessedOpMetaAttributes">
               <xsl:copy>
                 <xsl:apply-templates select="@*"/>
                 <xsl:copy-of select="$ProcessedOpMetaAttributes"/>
               </xsl:copy>
             </xsl:if>
           </xsl:when>
           <xsl:otherwise>
             <xsl:call-template name="HelperIdentity"/>
           </xsl:otherwise>
         </xsl:choose>
       </xsl:for-each>
     </xsl:if>
     <!-- E: special-casing meta_attributes -->
     </xsl:element>
   </xsl:if>
 </xsl:template>
 
 <!--
 
  ACTUAL TRANSFORMATION
 
  -->
 
 <xsl:template match="cib">
   <xsl:copy>
     <xsl:apply-templates select="@*"/>
     <xsl:attribute name="validate-with">
       <xsl:value-of select="concat('pacemaker-', $cib-min-ver)"/>
     </xsl:attribute>
     <xsl:apply-templates select="node()"/>
   </xsl:copy>
 </xsl:template>
 
 <xsl:template match="cluster_property_set">
   <xsl:variable name="ProcessedClusterProperties">
     <xsl:call-template name="ProcessClusterProperties">
       <xsl:with-param name="Source" select="."/>
     </xsl:call-template>
   </xsl:variable>
   <xsl:if test="normalize-space($ProcessedClusterProperties)
                 != $ProcessedClusterProperties">
     <xsl:copy>
       <xsl:apply-templates select="@*"/>
       <xsl:copy-of select="$ProcessedClusterProperties"/>
     </xsl:copy>
   </xsl:if>
 </xsl:template>
 
 <xsl:template match="rsc_colocation">
   <xsl:copy>
     <xsl:for-each select="@*">
       <xsl:variable name="Replacement"
                     select="$MapConstraintsColocation/cibtr:replace[
                               @what = name(current())
                             ]"/>
       <xsl:call-template name="MapMsg">
         <xsl:with-param name="Context" select="../@id"/>
         <xsl:with-param name="Replacement" select="$Replacement"/>
       </xsl:call-template>
       <xsl:choose>
         <xsl:when test="$Replacement
                         and
                         not(string($Replacement/@with))">
           <!-- drop -->
         </xsl:when>
         <xsl:when test="$Replacement">
           <!-- rename -->
           <xsl:attribute name="{name()}">
             <xsl:value-of select="$Replacement/@with"/>
           </xsl:attribute>
         </xsl:when>
         <xsl:otherwise>
           <xsl:copy/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:for-each>
     <xsl:apply-templates select="node()"/>
   </xsl:copy>
 </xsl:template>
 
 <xsl:template match="node">
   <xsl:copy>
     <xsl:for-each select="@*">
       <xsl:variable name="Replacement"
                     select="$MapClusterNode/cibtr:replace[
                               @what = name(current())
                               and
                               (
                                 (
                                   @in-case-of
                                   and
                                   contains(concat('|', @in-case-of, '|'),
                                            concat('|', current(), '|'))
                                 )
                                 or
                                 (
                                   not(@in-case-of)
                                   and
                                   not(
                                     $MapClusterProperties/cibtr:replace[
                                       @what = current()/@name
                                       and
                                       @in-case-of
                                       and
                                       contains(concat('|', @in-case-of, '|'),
                                                concat('|', current(), '|'))
                                     ]
                                   )
                                 )
                               )
                             ]"/>
       <xsl:call-template name="MapMsg">
         <xsl:with-param name="Context" select="concat(../@uname, ' (id=', ../@id, ')')"/>
         <xsl:with-param name="Replacement" select="$Replacement"/>
       </xsl:call-template>
       <xsl:choose>
         <xsl:when test="$Replacement
                         and
                         not(string($Replacement/@with))">
           <!-- drop -->
         </xsl:when>
         <xsl:when test="$Replacement">
           <!-- rename -->
           <xsl:attribute name="{$Replacement/@with}">
             <xsl:choose>
               <xsl:when test="$Replacement/@redefined-as">
                 <xsl:value-of select="$Replacement/@redefined-as"/>
               </xsl:when>
               <xsl:otherwise>
                 <xsl:value-of select="."/>
               </xsl:otherwise>
             </xsl:choose>
           </xsl:attribute>
         </xsl:when>
         <xsl:otherwise>
           <xsl:copy/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:for-each>
     <xsl:apply-templates select="node()"/>
   </xsl:copy>
 </xsl:template>
 
 <!--
  1a. propagate (primitive|template)/operations/
        op[name() = 'start' or name() = 'promote']/@requires
      under new ./meta_attributes/nvpair
 
  1b. "move" (primitive|template)/operations/
        op[name() = 'start' or name() = 'promote']/
        meta_attributes/nvpair[@requires]
      under ./meta_attributes
 
   otherwise, just
 
  2a.  drop (primitive|template)/operations/
         op/@requires
 
  2b.  drop (primitive|template)/operations/
         op/meta_attributes/nvpair[@requires]
 
  Not compatible with meta_attributes referenced via id-ref
  (would need external preprocessing).
  -->
 <xsl:template match="primitive|template">
   <xsl:copy>
     <xsl:apply-templates select="@*"/>
     <!-- B: special-casing operations|instance_attributes -->
     <xsl:for-each select="node()">
       <xsl:choose>
         <xsl:when test="self::operations">
           <xsl:copy>
             <xsl:apply-templates select="@*"/>
             <!-- B: special-casing op -->
             <xsl:for-each select="node()">
               <xsl:choose>
                 <xsl:when test="self::op">
                   <!-- process @*|meta_attributes/nvpair
                        (keep/drop/move elsewhere) -->
                   <xsl:variable name="ProcessedOpMetaAttributes">
                     <xsl:call-template name="ProcessAttrOpMetaAttributes">
                       <xsl:with-param name="Source" select="."/>
                     </xsl:call-template>
                   </xsl:variable>
                   <xsl:copy-of select="$ProcessedOpMetaAttributes"/>
                 </xsl:when>
                 <xsl:otherwise>
                   <xsl:call-template name="HelperIdentity"/>
                 </xsl:otherwise>
               </xsl:choose>
             </xsl:for-each>
             <!-- E: special-casing op -->
           </xsl:copy>
         </xsl:when>
         <xsl:when test="self::instance_attributes">
           <xsl:variable name="ProcessedRscInstanceAttributes">
             <xsl:call-template name="ProcessRscInstanceAttributes">
               <xsl:with-param name="Source" select="."/>
             </xsl:call-template>
           </xsl:variable>
           <!-- cf. trick A. -->
           <xsl:if test="normalize-space($ProcessedRscInstanceAttributes)
                         != $ProcessedRscInstanceAttributes">
             <xsl:copy>
               <xsl:apply-templates select="@*"/>
               <xsl:copy-of select="$ProcessedRscInstanceAttributes"/>
             </xsl:copy>
           </xsl:if>
         </xsl:when>
         <xsl:otherwise>
           <xsl:call-template name="HelperIdentity"/>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:for-each>
     <!-- E: special-casing operations -->
 
     <!-- add as last meta_attributes block... -->
 
     <!-- ...indirectly from op attributes -->
     <xsl:variable name="ToPropagateFromOp">
       <xsl:for-each select="operations/op">
         <xsl:call-template name="ProcessAttrOpMetaAttributes">
           <xsl:with-param name="Source" select="."/>
           <xsl:with-param name="InverseMode" select="true()"/>
         </xsl:call-template>
       </xsl:for-each>
     </xsl:variable>
     <!-- cf. trick A. -->
     <xsl:if test="normalize-space($ToPropagateFromOp)
                   != $ToPropagateFromOp">
       <meta_attributes id="{concat('_2TO3_', @id, '-meta')}">
         <xsl:copy-of select="$ToPropagateFromOp"/>
       </meta_attributes>
     </xsl:if>
 
     <!-- ...directly by picking existing nvpairs of meta_attributes -->
     <xsl:for-each select="operations/op/meta_attributes">
       <xsl:variable name="ProcessedOpMetaAttributes">
         <xsl:call-template name="ProcessNonattrOpMetaAttributes">
           <xsl:with-param name="Source" select="."/>
           <xsl:with-param name="InverseMode" select="true()"/>
         </xsl:call-template>
       </xsl:variable>
       <!-- cf. trick A. -->
       <xsl:if test="normalize-space($ProcessedOpMetaAttributes)
                     != $ProcessedOpMetaAttributes">
         <xsl:copy>
           <xsl:apply-templates select="@*[
                                          name() != 'id'
                                        ]"/>
           <xsl:attribute name='id'>
             <xsl:value-of select="concat('_2TO3_', @id)"/>
           </xsl:attribute>
           <xsl:apply-templates select="node()[
                                          name() != 'nvpair'
                                        ]"/>
           <xsl:copy-of select="$ProcessedOpMetaAttributes"/>
           <xsl:apply-templates select="text()[position() = last()]"/>
         </xsl:copy>
       </xsl:if>
     </xsl:for-each>
   </xsl:copy>
 </xsl:template>
 
 <xsl:template match="configuration">
   <xsl:variable name="ProcessedOpDefaultsNonruleClusterProperties">
     <xsl:choose>
       <xsl:when test="op_defaults/meta_attributes[
                         not(@id-ref)
                         and
                         not(rule)
                       ]">
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source"
                           select="crm_config/cluster_property_set[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                   ]"/>
           <xsl:with-param name="InverseMode"
                           select="op_defaults/meta_attributes[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                   ]"/>
         </xsl:call-template>
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source"
                           select="crm_config/cluster_property_set[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                   ]"/>
           <xsl:with-param name="InverseMode"
                           select="'op_defaults'"/>
         </xsl:call-template>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:variable>
   <xsl:variable name="ProcessedRscDefaultsNonruleClusterProperties">
     <xsl:choose>
       <xsl:when test="rsc_defaults/meta_attributes[
                         not(@id-ref)
                         and
                         not(rule)
                       ]">
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source"
                           select="crm_config/cluster_property_set[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                   ]"/>
           <xsl:with-param name="InverseMode"
                           select="rsc_defaults/meta_attributes[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                   ]"/>
         </xsl:call-template>
       </xsl:when>
       <xsl:otherwise>
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source"
                           select="crm_config/cluster_property_set[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                   ]"/>
           <xsl:with-param name="InverseMode"
                           select="'rsc_defaults'"/>
         </xsl:call-template>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:variable>
   <xsl:variable name="ProcessedOpDefaultsRuleClusterProperties">
     <xsl:for-each select="crm_config/cluster_property_set[
                             not(@id-ref)
                             and
                             rule
                           ]">
 
       <xsl:variable name="ProcessedPartial">
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source"
                           select="."/>
           <xsl:with-param name="InverseMode" select="'op_defaults'"/>
         </xsl:call-template>
       </xsl:variable>
       <xsl:if test="normalize-space($ProcessedPartial)
                     != $ProcessedPartial">
         <meta_attributes id="{concat('_2TO3_', @id)}">
           <xsl-copy-of select="rule"/>
           <xsl:copy-of select="$ProcessedPartial"/>
         </meta_attributes>
       </xsl:if>
     </xsl:for-each>
   </xsl:variable>
   <xsl:variable name="ProcessedRscDefaultsRuleClusterProperties">
     <xsl:for-each select="crm_config/cluster_property_set[
                             not(@id-ref)
                             and
                             rule
                           ]">
       <xsl:variable name="ProcessedPartial">
         <xsl:call-template name="ProcessClusterProperties">
           <xsl:with-param name="Source"
                           select="."/>
           <xsl:with-param name="InverseMode" select="'rsc_defaults'"/>
         </xsl:call-template>
       </xsl:variable>
       <xsl:if test="normalize-space($ProcessedPartial)
                     != $ProcessedPartial">
         <meta_attributes id="{concat('_2TO3_', @id)}">
           <xsl-copy-of select="rule"/>
           <xsl:copy-of select="$ProcessedPartial"/>
         </meta_attributes>
       </xsl:if>
     </xsl:for-each>
   </xsl:variable>
 
   <xsl:copy>
     <xsl:apply-templates select="@*"/>
     <!-- B: special-casing {op,rsc}_defaults -->
     <xsl:for-each select="node()">
       <xsl:choose>
         <xsl:when test="self::op_defaults|self::rsc_defaults">
           <xsl:variable name="WhichDefaults" select="name()"/>
           <xsl:copy>
             <xsl:apply-templates select="@*"/>
             <!-- B: special-casing meta_attributes -->
             <xsl:for-each select="node()">
               <xsl:copy>
                 <xsl:choose>
                   <xsl:when test="self::meta_attributes[
                                     not(@id-ref)
                                     and
                                     not(rule)
                                     and
                                     not(
                                       preceding-sibling::meta_attributes[
                                         not(@id-ref)
                                         and
                                         not(rule)
                                       ]
                                     )
                                   ]">
                     <xsl:apply-templates select="@*|node()"/>
                     <xsl:if test="$WhichDefaults = 'op_defaults'">
                       <xsl:copy-of select="$ProcessedOpDefaultsNonruleClusterProperties"/>
                     </xsl:if>
                     <xsl:if test="$WhichDefaults = 'rsc_defaults'">
                       <xsl:copy-of select="$ProcessedRscDefaultsNonruleClusterProperties"/>
                     </xsl:if>
                   </xsl:when>
                   <xsl:otherwise>
                     <xsl:apply-templates select="@*|node()"/>
                   </xsl:otherwise>
                 </xsl:choose>
                 <xsl:if test="$WhichDefaults = 'op_defaults'
                               and
                               normalize-space($ProcessedOpDefaultsRuleClusterProperties)
                               != $ProcessedOpDefaultsRuleClusterProperties">
                   <xsl:copy-of select="$ProcessedOpDefaultsRuleClusterProperties"/>
                 </xsl:if>
                 <xsl:if test="$WhichDefaults = 'rsc_defaults'
                               and
                               normalize-space($ProcessedRscDefaultsRuleClusterProperties)
                               != $ProcessedRscDefaultsRuleClusterProperties">
                   <xsl:copy-of select="$ProcessedRscDefaultsRuleClusterProperties"/>
                 </xsl:if>
               </xsl:copy>
             </xsl:for-each>
             <!-- E: special-casing meta_attributes -->
           </xsl:copy>
         </xsl:when>
         <xsl:otherwise>
           <xsl:copy>
             <xsl:apply-templates select="@*|node()"/>
           </xsl:copy>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:for-each>
     <!-- E: special-casing {op,rsc}_defaults -->
     <xsl:if test="not(op_defaults)
                   and
                   (
                     normalize-space($ProcessedOpDefaultsNonruleClusterProperties)
                     != $ProcessedOpDefaultsNonruleClusterProperties
                     or
                     normalize-space($ProcessedOpDefaultsRuleClusterProperties)
                     != $ProcessedOpDefaultsRuleClusterProperties
                   )">
       <op_defaults>
         <xsl:if test="normalize-space($ProcessedOpDefaultsNonruleClusterProperties)
                       != $ProcessedOpDefaultsNonruleClusterProperties">
           <meta_attributes id="{concat('_2TO3_', '-op-defaults')}">
             <xsl:copy-of select="$ProcessedOpDefaultsNonruleClusterProperties"/>
           </meta_attributes>
         </xsl:if>
         <xsl:copy-of select="$ProcessedOpDefaultsRuleClusterProperties"/>
         <xsl:apply-templates select="text()[position() = last()]"/>
       </op_defaults>
     </xsl:if>
     <xsl:if test="not(rsc_defaults)
                   and
                   (
                     normalize-space($ProcessedRscDefaultsNonruleClusterProperties)
                     != $ProcessedRscDefaultsNonruleClusterProperties
                     or
                     normalize-space($ProcessedRscDefaultsRuleClusterProperties)
                     != $ProcessedRscDefaultsRuleClusterProperties
                   )">
       <rsc_defaults>
         <xsl:if test="normalize-space($ProcessedRscDefaultsNonruleClusterProperties)
                       != $ProcessedRscDefaultsNonruleClusterProperties">
           <meta_attributes id="{concat('_2TO3_', '-rsc-defaults')}">
             <xsl:copy-of select="$ProcessedRscDefaultsNonruleClusterProperties"/>
           </meta_attributes>
         </xsl:if>
         <xsl:copy-of select="$ProcessedRscDefaultsRuleClusterProperties"/>
         <xsl:apply-templates select="text()[position() = last()]"/>
       </rsc_defaults>
     </xsl:if>
   </xsl:copy>
 </xsl:template>
 
 <xsl:template match="@*|node()">
   <xsl:call-template name="HelperIdentity"/>
 </xsl:template>
 
 </xsl:stylesheet>
diff --git a/xml/upgrade-detail.xsl b/xml/upgrade-detail.xsl
index de9f1dbd59..8907618d15 100644
--- a/xml/upgrade-detail.xsl
+++ b/xml/upgrade-detail.xsl
@@ -1,123 +1,129 @@
 <!--
  Copyright 2018 Red Hat, Inc.
  Author: Jan Pokorny <jpokorny@redhat.com>
  Part of pacemaker project
  SPDX-License-Identifier: GPL-2.0-or-later
  -->
 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:cibtr-2="http://clusterlabs.org/ns/pacemaker/cibtr-2">
 <xsl:output method="text" encoding="UTF-8"/>
 
 <xsl:variable name="NL" select="'&#xA;'"/>
 
 <xsl:template name="MapMsg-2">
   <xsl:param name="Replacement"/>
   <xsl:choose>
     <xsl:when test="not($Replacement)"/>
     <xsl:when test="count($Replacement) != 1">
       <xsl:message terminate="yes">
         <xsl:value-of select="concat('INTERNAL ERROR:',
                                      $Replacement/../@msg-prefix,
                                      ': count($Replacement) != 1',
                                      ' does not hold (',
                                      count($Replacement), ')')"/>
       </xsl:message>
     </xsl:when>
     <xsl:otherwise>
       <cibtr-2:noop>
         <xsl:choose>
           <xsl:when test="string($Replacement/@with)">
             <xsl:choose>
               <xsl:when test="string($Replacement/@where)">
                 <xsl:if test="not(
                                 contains(
                                   concat('|', $Replacement/../@where-cases, '|'),
                                   concat('|', $Replacement/@where, '|')
                                 )
                               )">
                   <xsl:message terminate="yes">
                     <xsl:value-of select="concat('INTERNAL ERROR:',
                                                  $Replacement/../@msg-prefix,
                                                  ': $Replacement/@where (',
                                                  $Replacement/@where, ') not in ',
                                                  concat('|',
                                                  $Replacement/../@where-cases,
                                                  '|'))"/>
                   </xsl:message>
                 </xsl:if>
                 <xsl:value-of select="concat('moving ', $Replacement/@what,
                                              ' under ', $Replacement/@where)"/>
               </xsl:when>
               <xsl:when test="$Replacement/@with = $Replacement/@what">
                 <xsl:value-of select="concat('keeping ', $Replacement/@what)"/>
               </xsl:when>
               <xsl:otherwise>
                 <xsl:value-of select="concat('renaming ', $Replacement/@what)"/>
               </xsl:otherwise>
             </xsl:choose>
             <xsl:value-of select="concat(' as ', $Replacement/@with)"/>
             <xsl:if test="$Replacement/@where">
               <xsl:value-of select="' unless already defined there'"/>
             </xsl:if>
           </xsl:when>
           <xsl:otherwise>
             <xsl:value-of select="concat('dropping ', $Replacement/@what)"/>
           </xsl:otherwise>
         </xsl:choose>
         <xsl:if test="string($Replacement/@redefined-as)">
           <xsl:value-of select="concat(', redefined as ',
                                        $Replacement/@redefined-as)"/>
           <xsl:if test="$Replacement/@in-case-of">
             <xsl:value-of select="','"/>
           </xsl:if>
         </xsl:if>
 	<xsl:choose>
           <xsl:when test="string($Replacement/@in-case-of)">
             <xsl:value-of select="concat(' for matching ',
                                          $Replacement/@in-case-of)"/>
           </xsl:when>
           <xsl:when test="$Replacement/@in-case-of">
             <xsl:value-of select="' for matching &quot;empty string&quot;'"/>
           </xsl:when>
+          <xsl:when test="$Replacement/@in-case-of-droppable-prefix">
+            <xsl:value-of select="concat(' for matching ',
+                                    $Replacement/@in-case-of-droppable-prefix,
+                                    ' prefix that will, meanwhile, get dropped'
+                                  )"/>
+          </xsl:when>
 	</xsl:choose>
       </cibtr-2:noop>
       <xsl:if test="$Replacement/@msg-extra">
         <cibtr-2:noop>
           <xsl:value-of select="concat($NL, '     ... ',
                                        $Replacement/@msg-extra)"/>
         </cibtr-2:noop>
       </xsl:if>
     </xsl:otherwise>
   </xsl:choose>
 </xsl:template>
 
 <xsl:template match="cibtr-2:map">
   <xsl:value-of select="concat('Translation tables v2 in detail', $NL,
                                '===============================', $NL, $NL)"/>
   <xsl:apply-templates select="*"/>
 </xsl:template>
 
 <xsl:template match="cibtr-2:table">
   <xsl:value-of select="concat('Details for the ', @for, ' table:', $NL)"/>
   <xsl:if test="@where-cases">
     <xsl:value-of select="concat($NL, '   Possible to-move specifiers:', $NL,
                                  '   ','   ',  @where-cases, $NL)"/>
   </xsl:if>
   <xsl:value-of select="concat(string(preceding-sibling::comment()[1]), $NL)"/>
   <xsl:apply-templates select="*"/>
   <xsl:value-of select="$NL"/>
 </xsl:template>
 
 <xsl:template match="cibtr-2:replace">
   <xsl:value-of select="'   - '"/>
   <xsl:call-template name="MapMsg-2">
     <xsl:with-param name="Replacement" select="."/>
   </xsl:call-template>
   <xsl:value-of select="$NL"/>
 </xsl:template>
 
 <xsl:template match="*">
   <xsl:apply-templates select="*"/>
 </xsl:template>
 
 </xsl:stylesheet>