--- multibyte.c.orig	Tue Sep 20 14:35:19 2005
+++ multibyte.c	Tue Sep 20 15:35:47 2005
@@ -29,6 +29,7 @@
 	{ "EUC_TW",	EUC_TW },
 	{ "JOHAB", JOHAB },
 	{ "UNICODE",	UTF8 },
+	{ "UTF8",	UTF8 },		/* Corresponding from Version 8.1 */
 	{ "MULE_INTERNAL",MULE_INTERNAL },
 	{ "LATIN1",	LATIN1 },
 	{ "LATIN2",	LATIN2 },
@@ -41,11 +42,14 @@
 	{ "LATIN9", LATIN9 },
 	{ "LATIN10", LATIN10 },
 	{ "WIN1256", WIN1256 },
-	{ "TCVN", TCVN },
+	{ "TCVN", WIN1258 },
+	{ "WIN1258", WIN1258 },		/* Corresponding from Version 8.1 */
 	{ "WIN874", WIN874 },
 	{ "KOI8",	KOI8R },
 	{ "WIN",	WIN1251 },
-	{ "ALT",	ALT },
+	{ "WIN1251",	WIN1251 },	/* Corresponding from Version 8.1 */
+	{ "ALT",	WIN866  },
+	{ "WIN866",	WIN866  },	/* Corresponding from Version 8.1 */
 	{ "ISO_8859_5", ISO_8859_5 },
 	{ "ISO_8859_6", ISO_8859_6 },
 	{ "ISO_8859_7", ISO_8859_7 },
@@ -399,6 +403,12 @@
 				break; 	 
 			case 1250: 	 
 				wenc = "WIN1250"; 	 
+				break; 	 
+			case 1251: 	 
+				if (PG_VERSION_GE(self, 8.1)) 	 
+					wenc = "WIN1251"; 	 
+				else
+					wenc = "WIN"; 	 
 				break; 	 
 			case 1252: 	 
 				if (PG_VERSION_GE(self, 7.2)) 	 
--- multibyte.h.orig	Tue Sep 20 14:30:36 2005
+++ multibyte.h	Tue Sep 20 14:35:07 2005
@@ -28,11 +28,11 @@
 #define LATIN9				16	/* ISO-8859 Latin 9 */
 #define LATIN10				17	/* ISO-8859 Latin 10 */
 #define WIN1256				18	/* Arabic Windows */
-#define TCVN				19	/* Vietnamese Windows */
+#define WIN1258				19	/* Vietnamese Windows */
 #define WIN874				20	/* Thai Windows */
 #define KOI8R				21	/* KOI8-R/U */
 #define WIN1251				22	/* windows-1251 */
-#define ALT					23	/* Alternativny Variant (MS-DOS CP866) */
+#define WIN866				23	/* Alternativny Variant (MS-DOS CP866) */
 #define ISO_8859_5			24	/* ISO-8859-5 */
 #define ISO_8859_6			25	/* ISO-8859-6 */
 #define ISO_8859_7			26	/* ISO-8859-7 */