Mention ANALYZE boolean options in documentation.

Commit 41b54ba7 allowed not only VACUUM but also ANALYZE options
to take a boolean argument. But it forgot to update the documentation
for ANALYZE. This commit adds the descriptions about those ANALYZE
boolean options into the documentation.

This patch also updates tab-completion for ANALYZE boolean options.

Reported-by: Kyotaro Horiguchi
Author: Fujii Masao
Reviewed-by: Masahiko Sawada, Michael Paquier
Discussion: https://postgr.es/m/CAHGQGwHTUt-kuwgiwe8f0AvTnB+ySqJWh95jvmh-qcoKW9YA9g@mail.gmail.com

doc/src/sgml/ref/analyze.sgml

@@ -26,8 +26,8 @@ ANALYZE [ VERBOSE ] [ <replaceable class="parameter">table_and_columns</replacea
 
 <phrase>where <replaceable class="parameter">option</replaceable> can be one of:</phrase>
 
-    VERBOSE
-    SKIP_LOCKED
+    VERBOSE [ <replaceable class="parameter">boolean</replaceable> ]
+    SKIP_LOCKED [ <replaceable class="parameter">boolean</replaceable> ]
 
 <phrase>and <replaceable class="parameter">table_and_columns</replaceable> is:</phrase>
 
@@ -95,6 +95,20 @@ ANALYZE [ VERBOSE ] [ <replaceable class="parameter">table_and_columns</replacea
     </listitem>
    </varlistentry>
 
+   <varlistentry>
+    <term><replaceable class="parameter">boolean</replaceable></term>
+    <listitem>
+     <para>
+      Specifies whether the selected option should be turned on or off.
+      You can write <literal>TRUE</literal>, <literal>ON</literal>, or
+      <literal>1</literal> to enable the option, and <literal>FALSE</literal>,
+      <literal>OFF</literal>, or <literal>0</literal> to disable it.  The
+      <replaceable class="parameter">boolean</replaceable> value can also
+      be omitted, in which case <literal>TRUE</literal> is assumed.
+     </para>
+    </listitem>
+   </varlistentry>
+
    <varlistentry>
     <term><replaceable class="parameter">table_name</replaceable></term>
     <listitem>

doc/src/sgml/release-12.sgml

@@ -1983,8 +1983,8 @@ Author: Robert Haas <rhaas@postgresql.org>
 -->
 
       <para>
-       Allow <command>VACUUM</command> to take optional boolean argument
-       specifications (Masahiko Sawada)
+       Allow <command>VACUUM</command> and <command>ANALYZE</command>
+       to take optional boolean argument specifications (Masahiko Sawada)
       </para>
      </listitem>
 

src/bin/psql/tab-complete.c

@@ -2101,6 +2101,8 @@ psql_completion(const char *text, int start, int end)
 		 */
 		if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
 			COMPLETE_WITH("VERBOSE", "SKIP_LOCKED");
+		else if (TailMatches("VERBOSE|SKIP_LOCKED"))
+			COMPLETE_WITH("ON", "OFF");
 	}
 	else if (HeadMatches("ANALYZE") && TailMatches("("))
 		/* "ANALYZE (" should be caught above, so assume we want columns */