Add optional on/off argument to \timing.

David Fetter.

doc/src/sgml/ref/psql-ref.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.207 2008/06/01 16:23:08 tgl Exp $
+$PostgreSQL: pgsql/doc/src/sgml/ref/psql-ref.sgml,v 1.208 2008/06/11 10:48:16 heikki Exp $
 PostgreSQL documentation
 -->
 
@@ -1861,10 +1861,11 @@ lo_import 152801
 
 
       <varlistentry>
-       <term><literal>\timing</literal></term>
+       <term><literal>\timing [ <replaceable class="parameter">on</replaceable> | <replaceable class="parameter">off</replaceable> ]</literal></term>
         <listitem>
         <para>
-         Toggles a display of how long each SQL statement takes, in milliseconds.
+         Without parameter, toggles a display of how long each SQL statement
+         takes, in milliseconds.  With parameter, sets same.
         </para>
        </listitem>
       </varlistentry>

src/bin/psql/command.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2008, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/command.c,v 1.189 2008/05/14 19:10:29 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/command.c,v 1.190 2008/06/11 10:48:17 heikki Exp $
  */
 #include "postgres_fe.h"
 #include "command.h"
@@ -884,7 +884,12 @@ exec_command(const char *cmd,
 	/* \timing -- toggle timing of queries */
 	else if (strcmp(cmd, "timing") == 0)
 	{
-		pset.timing = !pset.timing;
+		char	   *opt = psql_scan_slash_option(scan_state,
+											     OT_NORMAL, NULL, false);
+		if (opt)
+			pset.timing = ParseVariableBool(opt);
+		else
+			pset.timing = !pset.timing;
 		if (!pset.quiet)
 		{
 			if (pset.timing)
@@ -892,6 +897,7 @@ exec_command(const char *cmd,
 			else
 				puts(_("Timing is off."));
 		}
+		free(opt);
 	}
 
 	/* \unset */