man: migrate more specifier explanations to standard-specifiers.xml

We probably can migrate even more, but for now let's just migrate those
which have the 1:1 identical text everywhere.

(Also, let's add the % entry to all specifier tables)

5 files changed, 45 insertions, 90 deletions

diff --git a/man/standard-specifiers.xml b/man/standard-specifiers.xml
index c5cd6a8862..0c258241df 100644
--- a/man/standard-specifiers.xml
+++ b/man/standard-specifiers.xml
@@ -4,6 +4,11 @@
 <!-- SPDX-License-Identifier: LGPL-2.1+ -->
 
 <tbody>
+  <row id='b'>
+    <entry><literal>%b</literal></entry>
+    <entry>Boot ID</entry>
+    <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
+  </row>
   <row id='a'>
     <entry><literal>%a</literal></entry>
     <entry>Architecture</entry>
@@ -14,11 +19,26 @@
     <entry>Operating system build ID</entry>
     <entry>The operating system build identifier of the running system, as read from the <varname>BUILD_ID=</varname> field of <filename>/etc/os-release</filename>. If not set, resolves to an empty string. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
   </row>
+  <row id='H'>
+    <entry><literal>%H</literal></entry>
+    <entry>Host name</entry>
+    <entry>The hostname of the running system.</entry>
+  </row>
+  <row id='m'>
+    <entry><literal>%m</literal></entry>
+    <entry>Machine ID</entry>
+    <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
+  </row>
   <row id='o'>
     <entry><literal>%o</literal></entry>
     <entry>Operating system ID</entry>
     <entry>The operating system identifier of the running system, as read from the <varname>ID=</varname> field of <filename>/etc/os-release</filename>. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
   </row>
+  <row id='v'>
+    <entry><literal>%v</literal></entry>
+    <entry>Kernel release</entry>
+    <entry>Identical to <command>uname -r</command> output.</entry>
+  </row>
   <row id='w'>
     <entry><literal>%w</literal></entry>
     <entry>Operating system version ID</entry>
@@ -29,4 +49,9 @@
     <entry>Operating system variant ID</entry>
     <entry>The operating system variant identifier of the running system, as read from the <varname>VARIANT_ID=</varname> field of <filename>/etc/os-release</filename>. If not set, resolves to an empty string. See <citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
   </row>
+  <row id='percent'>
+    <entry><literal>%%</literal></entry>
+    <entry>Single percent sign</entry>
+    <entry>Use <literal>%%</literal> in place of <literal>%</literal> to specify a single percent sign.</entry>
+  </row>
 </tbody>
diff --git a/man/systemd.dnssd.xml b/man/systemd.dnssd.xml
index d70cc43944..9e11677bde 100644
--- a/man/systemd.dnssd.xml
+++ b/man/systemd.dnssd.xml
@@ -90,30 +90,15 @@
                 </thead>
                 <tbody>
                   <xi:include href="standard-specifiers.xml" xpointer="a"/>
-                  <row>
-                    <entry><literal>%b</literal></entry>
-                    <entry>Boot ID</entry>
-                    <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
-                  </row>
+                  <xi:include href="standard-specifiers.xml" xpointer="b"/>
                   <xi:include href="standard-specifiers.xml" xpointer="B"/>
-                  <row>
-                    <entry><literal>%H</literal></entry>
-                    <entry>Host name</entry>
-                    <entry>The hostname of the running system.</entry>
-                  </row>
-                  <row>
-                    <entry><literal>%m</literal></entry>
-                    <entry>Machine ID</entry>
-                    <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
-                  </row>
+                  <xi:include href="standard-specifiers.xml" xpointer="H"/>
+                  <xi:include href="standard-specifiers.xml" xpointer="m"/>
                   <xi:include href="standard-specifiers.xml" xpointer="o"/>
-                  <row>
-                    <entry><literal>%v</literal></entry>
-                    <entry>Kernel release</entry>
-                    <entry>Identical to <command>uname -r</command> output.</entry>
-                  </row>
+                  <xi:include href="standard-specifiers.xml" xpointer="v"/>
                   <xi:include href="standard-specifiers.xml" xpointer="w"/>
                   <xi:include href="standard-specifiers.xml" xpointer="W"/>
+                  <xi:include href="standard-specifiers.xml" xpointer="percent"/>
                 </tbody>
               </tgroup>
             </table>
diff --git a/man/systemd.unit.xml b/man/systemd.unit.xml
index d570016b2f..999a13c560 100644
--- a/man/systemd.unit.xml
+++ b/man/systemd.unit.xml
@@ -1715,11 +1715,7 @@
             <entry>Architecture</entry>
             <entry>A short string identifying the architecture of the local system. A string such as <constant>x86</constant>, <constant>x86-64</constant> or <constant>arm64</constant>. See the architectures defined for <varname>ConditionArchitecture=</varname> above for a full list.</entry>
           </row>
-          <row>
-            <entry><literal>%b</literal></entry>
-            <entry>Boot ID</entry>
-            <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
-          </row>
+          <xi:include href="standard-specifiers.xml" xpointer="b"/>
           <xi:include href="standard-specifiers.xml" xpointer="B"/>
           <row>
             <entry><literal>%C</literal></entry>
@@ -1744,6 +1740,7 @@
 Note that this setting is <emphasis>not</emphasis> influenced by the <varname>User=</varname> setting configurable in the [Service] section of the service unit.</entry>
           </row>
           <row>
+            <!-- We do not use the common definition from standard-specifiers.xml here since we want a slightly more verbose explanation here, referring to the reload cycle. -->
             <entry><literal>%H</literal></entry>
             <entry>Host name</entry>
             <entry>The hostname of the running system at the point in time the unit configuration is loaded.</entry>
@@ -1773,11 +1770,7 @@ Note that this setting is <emphasis>not</emphasis> influenced by the <varname>Us
             <entry>Log directory root</entry>
             <entry>This is either <filename>/var/log</filename> (for the system manager) or the path <literal>$XDG_CONFIG_HOME</literal> resolves to with <filename index="false">/log</filename> appended (for user managers).</entry>
           </row>
-          <row>
-            <entry><literal>%m</literal></entry>
-            <entry>Machine ID</entry>
-            <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
-          </row>
+          <xi:include href="standard-specifiers.xml" xpointer="m"/>
           <xi:include href="standard-specifiers.xml" xpointer="o"/>
           <row>
             <entry><literal>%n</literal></entry>
@@ -1843,11 +1836,7 @@ Note that this setting is <emphasis>not</emphasis> influenced by the <varname>Us
 
 Note that this setting is <emphasis>not</emphasis> influenced by the <varname>User=</varname> setting configurable in the [Service] section of the service unit.</entry>
           </row>
-          <row>
-            <entry><literal>%v</literal></entry>
-            <entry>Kernel release</entry>
-            <entry>Identical to <command>uname -r</command> output</entry>
-          </row>
+          <xi:include href="standard-specifiers.xml" xpointer="v"/>
           <row>
             <entry><literal>%V</literal></entry>
             <entry>Directory for larger and persistent temporary files</entry>
@@ -1855,11 +1844,7 @@ Note that this setting is <emphasis>not</emphasis> influenced by the <varname>Us
           </row>
           <xi:include href="standard-specifiers.xml" xpointer="w"/>
           <xi:include href="standard-specifiers.xml" xpointer="W"/>
-          <row>
-            <entry><literal>%%</literal></entry>
-            <entry>Single percent sign</entry>
-            <entry>Use <literal>%%</literal> in place of <literal>%</literal> to specify a single percent sign.</entry>
-          </row>
+          <xi:include href="standard-specifiers.xml" xpointer="percent"/>
         </tbody>
       </tgroup>
     </table>
diff --git a/man/sysusers.d.xml b/man/sysusers.d.xml
index 2be41c1030..46e860ee50 100644
--- a/man/sysusers.d.xml
+++ b/man/sysusers.d.xml
@@ -252,33 +252,17 @@ r     -        500-900
           </thead>
           <tbody>
             <xi:include href="standard-specifiers.xml" xpointer="a"/>
-            <row>
-              <entry><literal>%b</literal></entry>
-              <entry>Boot ID</entry>
-              <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="b"/>
             <xi:include href="standard-specifiers.xml" xpointer="B"/>
-            <row>
-              <entry><literal>%H</literal></entry>
-              <entry>Host name</entry>
-              <entry>The hostname of the running system.</entry>
-            </row>
-            <row>
-              <entry><literal>%m</literal></entry>
-              <entry>Machine ID</entry>
-              <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="H"/>
+            <xi:include href="standard-specifiers.xml" xpointer="m"/>
             <xi:include href="standard-specifiers.xml" xpointer="o"/>
             <row>
               <entry><literal>%T</literal></entry>
               <entry>Directory for temporary files</entry>
               <entry>This is either <filename>/tmp</filename> or the path <literal>$TMPDIR</literal>, <literal>$TEMP</literal> or <literal>$TMP</literal> are set to.</entry>
             </row>
-            <row>
-              <entry><literal>%v</literal></entry>
-              <entry>Kernel release</entry>
-              <entry>Identical to <command>uname -r</command> output.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="v"/>
             <row>
               <entry><literal>%V</literal></entry>
               <entry>Directory for larger and persistent temporary files</entry>
@@ -286,11 +270,7 @@ r     -        500-900
             </row>
             <xi:include href="standard-specifiers.xml" xpointer="w"/>
             <xi:include href="standard-specifiers.xml" xpointer="W"/>
-            <row>
-              <entry><literal>%%</literal></entry>
-              <entry>Escaped <literal>%</literal></entry>
-              <entry>Single percent sign.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="percent"/>
           </tbody>
         </tgroup>
       </table>
diff --git a/man/tmpfiles.d.xml b/man/tmpfiles.d.xml
index 79fd6a9921..f45dfe0a53 100644
--- a/man/tmpfiles.d.xml
+++ b/man/tmpfiles.d.xml
@@ -633,11 +633,7 @@ w- /proc/sys/vm/swappiness - - - - 10</programlisting></para>
           </thead>
           <tbody>
             <xi:include href="standard-specifiers.xml" xpointer="a"/>
-            <row>
-              <entry><literal>%b</literal></entry>
-              <entry>Boot ID</entry>
-              <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="b"/>
             <xi:include href="standard-specifiers.xml" xpointer="B"/>
             <row>
               <entry><literal>%C</literal></entry>
@@ -649,21 +645,13 @@ w- /proc/sys/vm/swappiness - - - - 10</programlisting></para>
               <entry>User home directory</entry>
               <entry>This is the home directory of the user running the command. In case of the system instance this resolves to <literal>/root</literal>.</entry>
             </row>
-            <row>
-              <entry><literal>%H</literal></entry>
-              <entry>Host name</entry>
-              <entry>The hostname of the running system.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="H"/>
             <row>
               <entry><literal>%L</literal></entry>
               <entry>System or user log directory</entry>
               <entry>In <option>--user</option> mode, this is the same as <varname>$XDG_CONFIG_HOME</varname> with <filename index="false">/log</filename> appended, and <filename>/var/log</filename> otherwise.</entry>
             </row>
-            <row>
-              <entry><literal>%m</literal></entry>
-              <entry>Machine ID</entry>
-              <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="m"/>
             <xi:include href="standard-specifiers.xml" xpointer="o"/>
             <row>
               <entry><literal>%S</literal></entry>
@@ -700,11 +688,7 @@ w- /proc/sys/vm/swappiness - - - - 10</programlisting></para>
               <entry>User UID</entry>
               <entry>This is the numeric UID of the user running the command. In case of the system instance this resolves to <constant>0</constant>.</entry>
             </row>
-            <row>
-              <entry><literal>%v</literal></entry>
-              <entry>Kernel release</entry>
-              <entry>Identical to <command>uname -r</command> output.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="v"/>
             <row>
               <entry><literal>%V</literal></entry>
               <entry>Directory for larger and persistent temporary files</entry>
@@ -712,11 +696,7 @@ w- /proc/sys/vm/swappiness - - - - 10</programlisting></para>
             </row>
             <xi:include href="standard-specifiers.xml" xpointer="w"/>
             <xi:include href="standard-specifiers.xml" xpointer="W"/>
-            <row>
-              <entry><literal>%%</literal></entry>
-              <entry>Escaped <literal>%</literal></entry>
-              <entry>Single percent sign.</entry>
-            </row>
+            <xi:include href="standard-specifiers.xml" xpointer="percent"/>
           </tbody>
         </tgroup>
       </table>