diff --git a/contrib/pg_upgrade/option.c b/contrib/pg_upgrade/option.c
new file mode 100644
index bb594dd..cfc88ec
*** a/contrib/pg_upgrade/option.c
--- b/contrib/pg_upgrade/option.c
*************** parseCommandLine(int argc, char *argv[])
*** 137,153 ****
  				break;

  			case 'o':
! 				old_cluster.pgopts = pg_strdup(optarg);
  				break;

  			case 'O':
! 				new_cluster.pgopts = pg_strdup(optarg);
  				break;

  				/*
  				 * Someday, the port number option could be removed and passed
  				 * using -o/-O, but that requires postmaster -C to be
! 				 * supported on all old/new versions.
  				 */
  			case 'p':
  				if ((old_cluster.port = atoi(optarg)) <= 0)
--- 137,171 ----
  				break;

  			case 'o':
! 				/* append option? */
! 				if (!old_cluster.pgopts)
! 					old_cluster.pgopts = pg_strdup(optarg);
! 				else
! 				{
! 					char *old_pgopts = old_cluster.pgopts;
! 
! 					old_cluster.pgopts = psprintf("%s %s", old_pgopts, optarg);
! 					free(old_pgopts);
! 				}
  				break;

  			case 'O':
! 				/* append option? */
! 				if (!new_cluster.pgopts)
! 					new_cluster.pgopts = pg_strdup(optarg);
! 				else
! 				{
! 					char *new_pgopts = new_cluster.pgopts;
! 
! 					new_cluster.pgopts = psprintf("%s %s", new_pgopts, optarg);
! 					free(new_pgopts);
! 				}
  				break;

  				/*
  				 * Someday, the port number option could be removed and passed
  				 * using -o/-O, but that requires postmaster -C to be
! 				 * supported on all old/new versions (added in PG 9.2).
  				 */
  			case 'p':
  				if ((old_cluster.port = atoi(optarg)) <= 0)
diff --git a/doc/src/sgml/pgupgrade.sgml b/doc/src/sgml/pgupgrade.sgml
new file mode 100644
index b79f0db..dd57c5c
*** a/doc/src/sgml/pgupgrade.sgml
--- b/doc/src/sgml/pgupgrade.sgml
***************
*** 130,143 ****
        <term><option>-o</option> <replaceable class="parameter">options</replaceable></term>
        <term><option>--old-options</option> <replaceable class="parameter">options</replaceable></term>
        <listitem><para>options to be passed directly to the
!       old <command>postgres</command> command</para></listitem>
       </varlistentry>

       <varlistentry>
        <term><option>-O</option> <replaceable class="parameter">options</replaceable></term>
        <term><option>--new-options</option> <replaceable class="parameter">options</replaceable></term>
        <listitem><para>options to be passed directly to the
!       new <command>postgres</command> command</para></listitem>
       </varlistentry>

       <varlistentry>
--- 130,145 ----
        <term><option>-o</option> <replaceable class="parameter">options</replaceable></term>
        <term><option>--old-options</option> <replaceable class="parameter">options</replaceable></term>
        <listitem><para>options to be passed directly to the
!       old <command>postgres</command> command;  multiple
!       option invocations are appended</para></listitem>
       </varlistentry>

       <varlistentry>
        <term><option>-O</option> <replaceable class="parameter">options</replaceable></term>
        <term><option>--new-options</option> <replaceable class="parameter">options</replaceable></term>
        <listitem><para>options to be passed directly to the
!       new <command>postgres</command> command;  multiple
!       option invocations are appended</para></listitem>
       </varlistentry>

       <varlistentry>
diff --git a/doc/src/sgml/ref/pg_ctl-ref.sgml b/doc/src/sgml/ref/pg_ctl-ref.sgml
new file mode 100644
index 2368129..29f882b
*** a/doc/src/sgml/ref/pg_ctl-ref.sgml
--- b/doc/src/sgml/ref/pg_ctl-ref.sgml
*************** PostgreSQL documentation
*** 302,308 ****
        <listitem>
         <para>
          Specifies options to be passed directly to the
!         <command>postgres</command> command.
         </para>
         <para>
          The options should usually be surrounded by single or double
--- 302,309 ----
        <listitem>
         <para>
          Specifies options to be passed directly to the
!         <command>postgres</command> command;  multiple
!         option invocations are appended.
         </para>
         <para>
          The options should usually be surrounded by single or double
diff --git a/doc/src/sgml/ref/postgres-ref.sgml b/doc/src/sgml/ref/postgres-ref.sgml
new file mode 100644
index cdfdaa0..845d969
*** a/doc/src/sgml/ref/postgres-ref.sgml
--- b/doc/src/sgml/ref/postgres-ref.sgml
*************** PostgreSQL documentation
*** 288,294 ****
          class="parameter">extra-options</replaceable> are passed to
          all server processes started by this
          <command>postgres</command> process.  If the option string contains
!         any spaces, the entire string must be quoted.
         </para>

         <para>
--- 288,295 ----
          class="parameter">extra-options</replaceable> are passed to
          all server processes started by this
          <command>postgres</command> process.  If the option string contains
!         any spaces, the entire string must be quoted;  multiple
!         option invocations are appended.
         </para>

         <para>
diff --git a/src/bin/pg_ctl/pg_ctl.c b/src/bin/pg_ctl/pg_ctl.c
new file mode 100644
index ad7f36c..a46ca53
*** a/src/bin/pg_ctl/pg_ctl.c
--- b/src/bin/pg_ctl/pg_ctl.c
*************** main(int argc, char **argv)
*** 2184,2190 ****
  					register_servicename = pg_strdup(optarg);
  					break;
  				case 'o':
! 					post_opts = pg_strdup(optarg);
  					break;
  				case 'p':
  					exec_path = pg_strdup(optarg);
--- 2184,2199 ----
  					register_servicename = pg_strdup(optarg);
  					break;
  				case 'o':
! 					/* append option? */
! 					if (!post_opts)
! 						post_opts = pg_strdup(optarg);
! 					else
! 					{
! 						char *old_post_opts = post_opts;
! 
! 						post_opts = psprintf("%s %s", old_post_opts, optarg);
! 						free(old_post_opts);
! 					}
  					break;
  				case 'p':
  					exec_path = pg_strdup(optarg);