I really hope that I haven't missed anything in this one...

From: t-ishii@sra.co.jp

Attached are patches to enhance the multi-byte support.  (patches are
against 7/18 snapshot)

* determine encoding at initdb/createdb rather than compile time

Now initdb/createdb has an option to specify the encoding. Also, I
modified the syntax of CREATE DATABASE to accept encoding option. See
README.mb for more details.

For this purpose I have added new column "encoding" to pg_database.
Also pg_attribute and pg_class are changed to catch up the
modification to pg_database.  Actually I haved added pg_database_mb.h,
pg_attribute_mb.h and pg_class_mb.h. These are used only when MB is
enabled. The reason having separate files is I couldn't find a way to
use ifdef or whatever in those files. I have to admit it looks
ugly. No way.

* support for PGCLIENTENCODING when issuing COPY command

commands/copy.c modified.

* support for SQL92 syntax "SET NAMES"

See gram.y.

* support for LATIN2-5
* add UNICODE regression test case
* new test suite for MB

New directory test/mb added.

* clean up source files

Basic idea is to have MB's own subdirectory for easier maintenance.
These are include/mb and backend/utils/mb.

src/include/nodes/parsenodes.h

@@ -6,7 +6,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: parsenodes.h,v 1.50 1998/07/12 21:29:31 momjian Exp $
+ * $Id: parsenodes.h,v 1.51 1998/07/24 03:32:26 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -480,6 +480,10 @@ typedef struct CreatedbStmt
 	NodeTag		type;
 	char	   *dbname;			/* database to create */
 	char	   *dbpath;			/* location of database */
+#ifdef MB
+	int	   encoding;			/* default encoding
+						   (see regex/pg_wchar.h) */
+#endif
 } CreatedbStmt;
 
 /* ----------------------