Improve a couple of error messages per suggestions from Alvaro Herrera.

src/backend/parser/gram.y

@@ -11,7 +11,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.432 2003/09/09 23:22:20 petere Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.433 2003/09/15 22:28:57 tgl Exp $
  *
  * HISTORY
  *	  AUTHOR			DATE			MAJOR EVENT
@@ -3244,7 +3244,8 @@ oper_argtypes:
 				{
 				   ereport(ERROR,
 						   (errcode(ERRCODE_SYNTAX_ERROR),
-							errmsg("argument type missing (use NONE for unary operators)")));
+							errmsg("missing argument"),
+							errhint("Use NONE to denote the missing argument of a unary operator.")));
 				}
 			| Typename ',' Typename
 					{ $$ = makeList2($1, $3); }

src/backend/utils/misc/guc.c

@@ -10,7 +10,7 @@
  * Written by Peter Eisentraut <peter_e@gmx.net>.
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.157 2003/09/11 18:30:39 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.158 2003/09/15 22:28:58 tgl Exp $
  *
  *--------------------------------------------------------------------
  */
@@ -1540,7 +1540,7 @@ static struct config_string ConfigureNamesString[] =
 
 	{
 		{"unix_socket_group", PGC_POSTMASTER, CONN_AUTH_SETTINGS,
-			gettext_noop("The group owner of the Unix domain socket"),
+			gettext_noop("The owning group of the Unix-domain socket"),
 			gettext_noop("(The owning user of the socket is always the user "
 						 "that starts the server.)")
 		},
@@ -1550,7 +1550,7 @@ static struct config_string ConfigureNamesString[] =
 
 	{
 		{"unix_socket_directory", PGC_POSTMASTER, CONN_AUTH_SETTINGS,
-			gettext_noop("The Unix-domain socket directory to listen to"),
+			gettext_noop("Directory where the Unix-domain socket will be created"),
 			NULL
 		},
 		&UnixSocketDir,