Included patches make some enhancements to the multi-byte support.

o allow to use Big5 (a Chinese encoding used in Taiwan) as a client
  encoding. In this case the server side encoding should be EUC_TW

o add EUC_TW and Big5 test cases to the regression and the mb test
  (contributed by Jonah Kuo)

o fix mistake in include/mb/pg_wchar.h. An encoding id for EUC_TW was
  not correct (was 3 and now is 4)

o update documents (doc/README.mb and README.mb.jp)

o update psql helpfile (bin/psql/psqlHelp.h)

--
Tatsuo Ishii
t-ishii@sra.co.jp

Author: bmomjian

doc/README.mb

@@ -1,4 +1,4 @@
-postgresql 6.4 multi-byte (MB) support README	  Dec 16 1998
+postgresql 6.5 multi-byte (MB) support README	  Jan 26 1999
 
 						Tatsuo Ishii
 						t-ishii@sra.co.jp
@@ -113,6 +113,7 @@ Supported encodings for PGCLIENTENCODING are:
 	EUC_CN			Chinese EUC
 	EUC_KR			Korean EUC
 	EUC_TW			Taiwan EUC
+	BIG5			Traditional chinese
 	MULE_INTERNAL		Mule internal
 	LATIN1			ISO 8859-1 English and some European languages
 	LATIN2			ISO 8859-2 English and some European languages
@@ -169,6 +170,12 @@ Unicode: http://www.unicode.org/
 
 5. History
 
+Jan 26, 1999
+	* Add support Big5 for fronend encoding
+	  (you need to create a database with EUC_TW to use Big5)
+	* Add regression test case for EUC_TW
+	  (contributed by Jonah Kuo <jonahkuo@mail.ttn.com.tw>)
+
 Dec 15, 1998
 	* Bugs related to SQL_ASCII support fixed
 

doc/README.mb.jp

@@ -1,4 +1,4 @@
-postgresql 6.4 multi-byte (MB) support README	       1998/12/16 $B:n@.(B
+postgresql 6.5 multi-byte (MB) support README	       1999/1/26 $B:n@.(B
 
 							$B@P0fC#IW(B
 						t-ishii@sra.co.jp
@@ -130,7 +130,7 @@ initdb/createdb/create database $B$K$*$1$k%(%s%3!<%G%#%s%0$N;XDj$K$D$$$F(B
 
   $B4D6-JQ?t(B PGCLIENTENCODING $B$,@_Dj$5$l$F$$$k>l9g$O$=$NCM$,M%@h$5$l!"%P%C(B
   $B%/%(%s%IB&$H0[$J$k%(%s%3!<%G%#%s%0$,;HMQ$G$-$^$9!#@_Dj2DG=$J%(%s%3!<(B
-  $B%G%#%s%0$O!">e5-$K2C$(!"(BSJIS ($B%7%U%H(BJIS)$B$,;XDj$G$-$^$9!#(B
+  $B%G%#%s%0$O!">e5-$K2C$(!"(BSJIS ($B%7%U%H(BJIS)$B$H(B BiG5 $B$,;XDj$G$-$^$9!#(B
 
 	$B$A$J$_$K!"(BSJIS $B$O(B JISX0201 $B$N(B 1$B%P%$%H%+%J!"$$$o$f$k!VH>3Q%+%?(B
 	$B%+%J!W$b%5%]!<%H$7$F$$$^$9(B($B7h$7$F!VH>3Q%+%?%+%J!W$N;HMQ$r$*4+(B
@@ -206,6 +206,13 @@ initdb/createdb/create database $B$K$*$1$k%(%s%3!<%G%#%s%0$N;XDj$K$D$$$F(B
 
 $B2~DjMzNr!'(B
 
+  1999/1/26 Big5 $B%5%]!<%HDI2C(B
+	* Big5 $B$,%U%m%s%H%(%s%IB&$N%(%s%3!<%G%#%s%0$H$7$FMxMQ$G$-$k$h(B
+	  $B$&$K$J$j$^$7$?!#$3$N>l9g!"%P%C%/%(%s%IB&$N%(%s%3!<%G%#%s%0$O(B
+	  EUC_TW $B$^$?$O(B MULE_INTERNAL $B$H$7$^$9!#(B
+	* EUC_TW $B$N(B regression test $B%1!<%9$rDI2C(B
+	  (contributed by Jonah Kuo <jonahkuo@mail.ttn.com.tw>)
+
   1998/12/16 $BK\%I%-%e%a%s%H=$@5!#(B
 	* Makefile.custom $B$G(B MB=EUC_JP $B$J$I$H@_Dj$9$kJ}K!$O(B 6.4 $B0J9_(B
 	  $B%5%]!<%H$5$l$F$$$J$$$N$G:o=|$7$?!#(B

src/backend/utils/mb/Makefile

@@ -4,7 +4,7 @@
 #    Makefile for utils/mb
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/src/backend/utils/mb/Makefile,v 1.2 1998/07/26 04:31:03 scrappy Exp $
+#    $Header: /cvsroot/pgsql/src/backend/utils/mb/Makefile,v 1.3 1999/02/02 18:51:21 momjian Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -16,7 +16,8 @@ ifdef MULTIBYTE
 CFLAGS+= $(MBFLAGS)
 endif
 
-OBJS = common.o conv.o mbutils.o wchar.o wstrcmp.o wstrncmp.o variable.o
+OBJS = common.o conv.o mbutils.o wchar.o wstrcmp.o wstrncmp.o variable.o \
+       big5.o
 
 all: SUBSYS.o