From 1715ff112809bca5218ddb6eccfda2c20dc420b5 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Thu, 3 May 2012 22:50:04 +0300
Subject: [PATCH] doc: Fix for too many brackets in command synopses on man
 pages

The default for the choice attribute of the <arg> element is "opt",
which would normally put the argument inside brackets.  But the DSSSL
stylesheets contain a hack that treats <arg> directly inside <group>
specially, so that <group><arg>-x</arg><arg>-y</arg></group> comes out
as [ -x | -y ] rather than [ [-x] | [-y] ], which it would technically
be.  But when building man pages, this doesn't work, and so the
command synopses on the man pages contain lots of extra brackets.

By putting choice="opt" or choice="plain" explicitly on every <arg>
and <group> element, we avoid any toolchain dependencies like that,
and it also makes it clearer in the source code what is meant.

In passing, make some small corrections in the documentation about
which arguments are really optional or not.
---
 doc/src/sgml/ref/clusterdb.sgml      | 10 +--
 doc/src/sgml/ref/createdb.sgml       |  4 +-
 doc/src/sgml/ref/createlang.sgml     |  6 +-
 doc/src/sgml/ref/createuser.sgml     |  2 +-
 doc/src/sgml/ref/droplang.sgml       |  6 +-
 doc/src/sgml/ref/dropuser.sgml       |  2 +-
 doc/src/sgml/ref/initdb.sgml         |  4 +-
 doc/src/sgml/ref/pg_controldata.sgml |  4 +-
 doc/src/sgml/ref/pg_ctl-ref.sgml     | 92 ++++++++++++++--------------
 doc/src/sgml/ref/pg_dump.sgml        |  2 +-
 doc/src/sgml/ref/pg_resetxlog.sgml   | 16 ++---
 doc/src/sgml/ref/pg_restore.sgml     |  2 +-
 doc/src/sgml/ref/psql-ref.sgml       |  4 +-
 doc/src/sgml/ref/reindexdb.sgml      | 20 +++---
 doc/src/sgml/ref/vacuumdb.sgml       | 14 ++---
 doc/src/sgml/sql.sgml                | 14 ++---
 16 files changed, 101 insertions(+), 101 deletions(-)

diff --git a/doc/src/sgml/ref/clusterdb.sgml b/doc/src/sgml/ref/clusterdb.sgml
index e0246b3bca..097ea912f1 100644
--- a/doc/src/sgml/ref/clusterdb.sgml
+++ b/doc/src/sgml/ref/clusterdb.sgml
@@ -23,16 +23,16 @@ PostgreSQL documentation
   <cmdsynopsis>
    <command>clusterdb</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
-   <group><arg><option>--verbose</option></arg><arg><option>-v</option></arg></group>
-   <arg><group choice="plain"><arg><option>--table</option></arg><arg><option>-t</option></arg></group> <replaceable>table</replaceable> </arg>
-   <arg><replaceable>dbname</replaceable></arg>
+   <group choice="opt"><arg choice="plain"><option>--verbose</option></arg><arg choice="plain"><option>-v</option></arg></group>
+   <arg choice="opt"><group choice="plain"><arg choice="plain"><option>--table</option></arg><arg choice="plain"><option>-t</option></arg></group> <replaceable>table</replaceable> </arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>clusterdb</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
-   <group><arg><option>--verbose</option></arg><arg><option>-v</option></arg></group>
-   <group><arg><option>--all</option></arg><arg><option>-a</option></arg></group>
+   <group choice="opt"><arg choice="plain"><option>--verbose</option></arg><arg choice="plain"><option>-v</option></arg></group>
+   <group choice="plain"><arg choice="plain"><option>--all</option></arg><arg choice="plain"><option>-a</option></arg></group>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/createdb.sgml b/doc/src/sgml/ref/createdb.sgml
index cbbc5c0545..7dbedc2e90 100644
--- a/doc/src/sgml/ref/createdb.sgml
+++ b/doc/src/sgml/ref/createdb.sgml
@@ -24,8 +24,8 @@ PostgreSQL documentation
    <command>createdb</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
-   <arg><replaceable>dbname</replaceable></arg>
-   <arg><replaceable>description</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable>
+   <arg choice="opt"><replaceable>description</replaceable></arg></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/createlang.sgml b/doc/src/sgml/ref/createlang.sgml
index 4ca32fba39..2bc43627e5 100644
--- a/doc/src/sgml/ref/createlang.sgml
+++ b/doc/src/sgml/ref/createlang.sgml
@@ -24,14 +24,14 @@ PostgreSQL documentation
    <command>createlang</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg choice="plain"><replaceable>langname</replaceable></arg>
-   <arg><replaceable>dbname</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>createlang</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
-   <group choice="plain"><arg><option>--list</option></arg><arg><option>-l</option></arg></group>
-   <arg choice="plain"><replaceable>dbname</replaceable></arg>
+   <group choice="plain"><arg choice="plain"><option>--list</option></arg><arg choice="plain"><option>-l</option></arg></group>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/createuser.sgml b/doc/src/sgml/ref/createuser.sgml
index 9942cd66f6..dedc97f223 100644
--- a/doc/src/sgml/ref/createuser.sgml
+++ b/doc/src/sgml/ref/createuser.sgml
@@ -24,7 +24,7 @@ PostgreSQL documentation
    <command>createuser</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
-   <arg><replaceable>username</replaceable></arg>
+   <arg choice="opt"><replaceable>username</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/droplang.sgml b/doc/src/sgml/ref/droplang.sgml
index 2bfdbfe888..81b954a68f 100644
--- a/doc/src/sgml/ref/droplang.sgml
+++ b/doc/src/sgml/ref/droplang.sgml
@@ -24,14 +24,14 @@ PostgreSQL documentation
    <command>droplang</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg choice="plain"><replaceable>langname</replaceable></arg>
-   <arg><replaceable>dbname</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>droplang</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
-   <group choice="plain"><arg><option>--list</option></arg><arg><option>-l</option></arg></group>
-   <arg choice="plain"><replaceable>dbname</replaceable></arg>
+   <group choice="plain"><arg choice="plain"><option>--list</option></arg><arg choice="plain"><option>-l</option></arg></group>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/dropuser.sgml b/doc/src/sgml/ref/dropuser.sgml
index bc6feafe9f..891bbd6037 100644
--- a/doc/src/sgml/ref/dropuser.sgml
+++ b/doc/src/sgml/ref/dropuser.sgml
@@ -24,7 +24,7 @@ PostgreSQL documentation
    <command>dropuser</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
-   <arg><replaceable>username</replaceable></arg>
+   <arg choice="opt"><replaceable>username</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/initdb.sgml b/doc/src/sgml/ref/initdb.sgml
index 092df33d10..89f392eaeb 100644
--- a/doc/src/sgml/ref/initdb.sgml
+++ b/doc/src/sgml/ref/initdb.sgml
@@ -25,8 +25,8 @@ PostgreSQL documentation
    <arg rep="repeat"><replaceable>option</replaceable></arg>
    <group choice="plain">
     <group choice="opt">
-     <arg><option>--pgdata</option></arg>
-     <arg><option>-D</option></arg>
+     <arg choice="plain"><option>--pgdata</option></arg>
+     <arg choice="plain"><option>-D</option></arg>
     </group>
     <replaceable> directory</replaceable>
    </group>
diff --git a/doc/src/sgml/ref/pg_controldata.sgml b/doc/src/sgml/ref/pg_controldata.sgml
index d39b6e18f8..7926acb918 100644
--- a/doc/src/sgml/ref/pg_controldata.sgml
+++ b/doc/src/sgml/ref/pg_controldata.sgml
@@ -22,8 +22,8 @@ PostgreSQL documentation
  <refsynopsisdiv>
   <cmdsynopsis>
    <command>pg_controldata</command>
-   <arg><replaceable class="parameter">option</replaceable></arg>
-   <arg><replaceable class="parameter">datadir</replaceable></arg>
+   <arg choice="opt"><replaceable class="parameter">option</replaceable></arg>
+   <arg choice="opt"><replaceable class="parameter">datadir</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/pg_ctl-ref.sgml b/doc/src/sgml/ref/pg_ctl-ref.sgml
index fcc34ecb96..1409e0c44e 100644
--- a/doc/src/sgml/ref/pg_ctl-ref.sgml
+++ b/doc/src/sgml/ref/pg_ctl-ref.sgml
@@ -23,36 +23,36 @@ PostgreSQL documentation
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>init[db]</option></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
-   <arg><option>-o</option> <replaceable>initdb-options</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-o</option> <replaceable>initdb-options</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>start</option></arg>
-   <arg><option>-w</option></arg>
-   <arg><option>-t</option> <replaceable>seconds</replaceable></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
-   <arg><option>-l</option> <replaceable>filename</replaceable></arg>
-   <arg><option>-o</option> <replaceable>options</replaceable></arg>
-   <arg><option>-p</option> <replaceable>path</replaceable></arg>
-   <arg><option>-c</option></arg>
+   <arg choice="opt"><option>-w</option></arg>
+   <arg choice="opt"><option>-t</option> <replaceable>seconds</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-l</option> <replaceable>filename</replaceable></arg>
+   <arg choice="opt"><option>-o</option> <replaceable>options</replaceable></arg>
+   <arg choice="opt"><option>-p</option> <replaceable>path</replaceable></arg>
+   <arg choice="opt"><option>-c</option></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>stop</option></arg>
-   <arg><option>-W</option></arg>
-   <arg><option>-t</option> <replaceable>seconds</replaceable></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
-   <arg><option>-m</option>
+   <arg choice="opt"><option>-W</option></arg>
+   <arg choice="opt"><option>-t</option> <replaceable>seconds</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-m</option>
      <group choice="plain">
-       <arg><option>s[mart]</option></arg>
-       <arg><option>f[ast]</option></arg>
-       <arg><option>i[mmediate]</option></arg>
+       <arg choice="plain"><option>s[mart]</option></arg>
+       <arg choice="plain"><option>f[ast]</option></arg>
+       <arg choice="plain"><option>i[mmediate]</option></arg>
      </group>
    </arg>
   </cmdsynopsis>
@@ -60,39 +60,39 @@ PostgreSQL documentation
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>restart</option></arg>
-   <arg><option>-w</option></arg>
-   <arg><option>-t</option> <replaceable>seconds</replaceable></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
-   <arg><option>-c</option></arg>
-   <arg><option>-m</option>
+   <arg choice="opt"><option>-w</option></arg>
+   <arg choice="opt"><option>-t</option> <replaceable>seconds</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-c</option></arg>
+   <arg choice="opt"><option>-m</option>
      <group choice="plain">
-       <arg><option>s[mart]</option></arg>
-       <arg><option>f[ast]</option></arg>
-       <arg><option>i[mmediate]</option></arg>
+       <arg choice="plain"><option>s[mart]</option></arg>
+       <arg choice="plain"><option>f[ast]</option></arg>
+       <arg choice="plain"><option>i[mmediate]</option></arg>
      </group>
    </arg>
-   <arg><option>-o</option> <replaceable>options</replaceable></arg>
+   <arg choice="opt"><option>-o</option> <replaceable>options</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>reload</option></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>status</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>promote</option></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
@@ -105,26 +105,26 @@ PostgreSQL documentation
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>register</option></arg>
-   <arg><option>-N</option> <replaceable>servicename</replaceable></arg>
-   <arg><option>-U</option> <replaceable>username</replaceable></arg>
-   <arg><option>-P</option> <replaceable>password</replaceable></arg>
-   <arg><option>-D</option> <replaceable>datadir</replaceable></arg>
-   <arg><option>-S</option>
+   <arg choice="opt"><option>-N</option> <replaceable>servicename</replaceable></arg>
+   <arg choice="opt"><option>-U</option> <replaceable>username</replaceable></arg>
+   <arg choice="opt"><option>-P</option> <replaceable>password</replaceable></arg>
+   <arg choice="opt"><option>-D</option> <replaceable>datadir</replaceable></arg>
+   <arg choice="opt"><option>-S</option>
      <group choice="plain">
-       <arg><option>a[uto]</option></arg>
-       <arg><option>d[emand]</option></arg>
+       <arg choice="plain"><option>a[uto]</option></arg>
+       <arg choice="plain"><option>d[emand]</option></arg>
      </group>
    </arg>
-   <arg><option>-w</option></arg>
-   <arg><option>-t</option> <replaceable>seconds</replaceable></arg>
-   <arg><option>-s</option></arg>
-   <arg><option>-o</option> <replaceable>options</replaceable></arg>
+   <arg choice="opt"><option>-w</option></arg>
+   <arg choice="opt"><option>-t</option> <replaceable>seconds</replaceable></arg>
+   <arg choice="opt"><option>-s</option></arg>
+   <arg choice="opt"><option>-o</option> <replaceable>options</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>pg_ctl</command>
    <arg choice="plain"><option>unregister</option></arg>
-   <arg><option>-N</option> <replaceable>servicename</replaceable></arg>
+   <arg choice="opt"><option>-N</option> <replaceable>servicename</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/pg_dump.sgml b/doc/src/sgml/ref/pg_dump.sgml
index 6b315009ff..a5e5304326 100644
--- a/doc/src/sgml/ref/pg_dump.sgml
+++ b/doc/src/sgml/ref/pg_dump.sgml
@@ -27,7 +27,7 @@ PostgreSQL documentation
    <command>pg_dump</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
-   <arg><replaceable>dbname</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/pg_resetxlog.sgml b/doc/src/sgml/ref/pg_resetxlog.sgml
index 3a7dfb3c73..fe67a3d1f2 100644
--- a/doc/src/sgml/ref/pg_resetxlog.sgml
+++ b/doc/src/sgml/ref/pg_resetxlog.sgml
@@ -22,14 +22,14 @@ PostgreSQL documentation
  <refsynopsisdiv>
   <cmdsynopsis>
    <command>pg_resetxlog</command>
-   <arg><option>-f</option></arg>
-   <arg><option>-n</option></arg>
-   <arg><option>-o</option> <replaceable class="parameter">oid</replaceable></arg>
-   <arg><option>-x</option> <replaceable class="parameter">xid</replaceable></arg>
-   <arg><option>-e</option> <replaceable class="parameter">xid_epoch</replaceable></arg>
-   <arg><option>-m</option> <replaceable class="parameter">mxid</replaceable></arg>
-   <arg><option>-O</option> <replaceable class="parameter">mxoff</replaceable></arg>
-   <arg><option>-l</option> <replaceable class="parameter">timelineid</replaceable>,<replaceable class="parameter">fileid</replaceable>,<replaceable class="parameter">seg</replaceable></arg>
+   <arg choice="opt"><option>-f</option></arg>
+   <arg choice="opt"><option>-n</option></arg>
+   <arg choice="opt"><option>-o</option> <replaceable class="parameter">oid</replaceable></arg>
+   <arg choice="opt"><option>-x</option> <replaceable class="parameter">xid</replaceable></arg>
+   <arg choice="opt"><option>-e</option> <replaceable class="parameter">xid_epoch</replaceable></arg>
+   <arg choice="opt"><option>-m</option> <replaceable class="parameter">mxid</replaceable></arg>
+   <arg choice="opt"><option>-O</option> <replaceable class="parameter">mxoff</replaceable></arg>
+   <arg choice="opt"><option>-l</option> <replaceable class="parameter">timelineid</replaceable>,<replaceable class="parameter">fileid</replaceable>,<replaceable class="parameter">seg</replaceable></arg>
    <arg choice="plain"><replaceable>datadir</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
diff --git a/doc/src/sgml/ref/pg_restore.sgml b/doc/src/sgml/ref/pg_restore.sgml
index 6c3326668f..47e972223e 100644
--- a/doc/src/sgml/ref/pg_restore.sgml
+++ b/doc/src/sgml/ref/pg_restore.sgml
@@ -25,7 +25,7 @@
    <command>pg_restore</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
-   <arg><replaceable>filename</replaceable></arg>
+   <arg choice="opt"><replaceable>filename</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index bdcadf3692..487df74617 100644
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -25,8 +25,8 @@ PostgreSQL documentation
   <cmdsynopsis>
    <command>psql</command>
    <arg rep="repeat"><replaceable class="parameter">option</replaceable></arg>
-   <arg><replaceable class="parameter">dbname</replaceable>
-   <arg><replaceable class="parameter">username</replaceable></arg></arg>
+   <arg choice="opt"><replaceable class="parameter">dbname</replaceable>
+   <arg choice="opt"><replaceable class="parameter">username</replaceable></arg></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/reindexdb.sgml b/doc/src/sgml/ref/reindexdb.sgml
index 526fd76817..7b2f72d04f 100644
--- a/doc/src/sgml/ref/reindexdb.sgml
+++ b/doc/src/sgml/ref/reindexdb.sgml
@@ -25,27 +25,27 @@ PostgreSQL documentation
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <group choice="opt">
     <group choice="plain">
-     <arg><option>--table</option></arg>
-     <arg><option>-t</option></arg>
+     <arg choice="plain"><option>--table</option></arg>
+     <arg choice="plain"><option>-t</option></arg>
     </group>
     <replaceable>table</replaceable>
    </group>
    <group choice="opt">
     <group choice="plain">
-     <arg><option>--index</option></arg>
-     <arg><option>-i</option></arg>
+     <arg choice="plain"><option>--index</option></arg>
+     <arg choice="plain"><option>-i</option></arg>
     </group>
     <replaceable>index</replaceable>
    </group>
-   <arg><replaceable>dbname</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
    <command>reindexdb</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <group choice="plain">
-    <arg><option>--all</option></arg>
-    <arg><option>-a</option></arg>
+    <arg choice="plain"><option>--all</option></arg>
+    <arg choice="plain"><option>-a</option></arg>
    </group>
   </cmdsynopsis>
 
@@ -53,10 +53,10 @@ PostgreSQL documentation
    <command>reindexdb</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <group choice="plain">
-    <arg><option>--system</option></arg>
-    <arg><option>-s</option></arg>
+    <arg choice="plain"><option>--system</option></arg>
+    <arg choice="plain"><option>-s</option></arg>
    </group>
-   <arg><replaceable>dbname</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
  </refsynopsisdiv>
 
diff --git a/doc/src/sgml/ref/vacuumdb.sgml b/doc/src/sgml/ref/vacuumdb.sgml
index c008611a5a..c60ba4424f 100644
--- a/doc/src/sgml/ref/vacuumdb.sgml
+++ b/doc/src/sgml/ref/vacuumdb.sgml
@@ -24,15 +24,15 @@ PostgreSQL documentation
    <command>vacuumdb</command>
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
-   <arg>
+   <arg choice="opt">
     <group choice="plain">
-     <arg><option>--table</option></arg>
-     <arg><option>-t</option></arg>
+     <arg choice="plain"><option>--table</option></arg>
+     <arg choice="plain"><option>-t</option></arg>
     </group>
     <replaceable>table</replaceable>
-    <arg>( <replaceable class="parameter">column</replaceable> [,...] )</arg>
+    <arg choice="opt">( <replaceable class="parameter">column</replaceable> [,...] )</arg>
    </arg>
-   <arg><replaceable>dbname</replaceable></arg>
+   <arg choice="opt"><replaceable>dbname</replaceable></arg>
   </cmdsynopsis>
 
   <cmdsynopsis>
@@ -40,8 +40,8 @@ PostgreSQL documentation
    <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
    <arg rep="repeat"><replaceable>option</replaceable></arg>
    <group choice="plain">
-    <arg><option>--all</option></arg>
-    <arg><option>-a</option></arg>
+    <arg choice="plain"><option>--all</option></arg>
+    <arg choice="plain"><option>-a</option></arg>
    </group>
   </cmdsynopsis>
  </refsynopsisdiv>
diff --git a/doc/src/sgml/sql.sgml b/doc/src/sgml/sql.sgml
index c19e8232ba..ba92607966 100644
--- a/doc/src/sgml/sql.sgml
+++ b/doc/src/sgml/sql.sgml
@@ -1103,7 +1103,7 @@ SELECT sname, pname from supplier
             <arg choice="opt"> NATURAL </arg>
             <group choice="opt">
                 <arg choice="opt"> INNER </arg>
-                <arg>
+                <arg choice="plain">
                 <group choice="req">
                     <arg choice="plain"> LEFT </arg>
                     <arg choice="plain"> RIGHT </arg>
@@ -1115,8 +1115,8 @@ SELECT sname, pname from supplier
             <command> JOIN </command>
             <arg choice="req"> <replaceable class="parameter">T2</replaceable> </arg>
             <group choice="req">
-                <arg> ON <replaceable>search condition</replaceable></arg>
-                <arg> USING ( <replaceable>join column list</replaceable> ) </arg>
+                <arg choice="plain"> ON <replaceable>search condition</replaceable></arg>
+                <arg choice="plain"> USING ( <replaceable>join column list</replaceable> ) </arg>
             </group>
             </cmdsynopsis>
 
@@ -1141,7 +1141,7 @@ SELECT sname, pname from supplier
             <varlistentry>
                 <term>
                     <cmdsynopsis>
-                        <arg> INNER </arg>
+                        <arg choice="opt"> INNER </arg>
                         <command> JOIN </command>
                     </cmdsynopsis>
                 </term>
@@ -1163,7 +1163,7 @@ SELECT sname, pname from supplier
                 <term>
                     <cmdsynopsis>
                         <arg choice="plain"> LEFT </arg>
-                        <arg> OUTER </arg>
+                        <arg choice="opt"> OUTER </arg>
                         <command> JOIN </command>
                     </cmdsynopsis>
                 </term>
@@ -1185,7 +1185,7 @@ SELECT sname, pname from supplier
                 <term>
                     <cmdsynopsis>
                         <arg choice="plain"> RIGHT </arg>
-                        <arg> OUTER </arg>
+                        <arg choice="opt"> OUTER </arg>
                         <command> JOIN </command>
                     </cmdsynopsis>
                 </term>
@@ -1207,7 +1207,7 @@ SELECT sname, pname from supplier
                 <term>
                     <cmdsynopsis>
                         <arg choice="plain"> FULL </arg>
-                        <arg> OUTER </arg>
+                        <arg choice="opt"> OUTER </arg>
                         <command> JOIN </command>
                     </cmdsynopsis>
                 </term>