Alter the signature for encoding conversion functions to declare the

output area as INTERNAL not CSTRING.  This is to prevent people from
calling the functions by hand.  This is a permanent solution for the
back branches but I hope it is just a stopgap for HEAD.

doc/src/sgml/ref/create_conversion.sgml

@@ -1,4 +1,4 @@
-<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/create_conversion.sgml,v 1.5 2002/11/02 02:33:03 tgl Exp $ -->
+<!-- $Header: /cvsroot/pgsql/doc/src/sgml/ref/create_conversion.sgml,v 1.5.2.1 2005/05/03 19:18:48 tgl Exp $ -->
 
 <refentry id="SQL-CREATECONVERSION">
  <refmeta>
@@ -8,7 +8,7 @@
 
  <refnamediv>
   <refname>CREATE CONVERSION</refname>
-  <refpurpose>define a user-defined conversion</refpurpose>
+  <refpurpose>define a user-defined encoding conversion</refpurpose>
  </refnamediv>
 
  <refsynopsisdiv>
@@ -102,7 +102,7 @@ CREATE [DEFAULT] CONVERSION <replaceable>conversion_name</replaceable>
 	INTEGER,	-- source encoding id
 	INTEGER,	-- destination encoding id
 	CSTRING,	-- source string (null terminated C string)
-	CSTRING,	-- destination string (null terminated C string)
+	INTERNAL,	-- destination (fill with a null terminated C string)
 	INTEGER		-- source string length
 	) returns VOID;
        </programlisting>

src/backend/commands/conversioncmds.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/conversioncmds.c,v 1.5 2002/11/02 02:33:03 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/conversioncmds.c,v 1.5.2.1 2005/05/03 19:18:48 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -41,7 +41,7 @@ CreateConversionCommand(CreateConversionStmt *stmt)
 	const char *for_encoding_name = stmt->for_encoding_name;
 	const char *to_encoding_name = stmt->to_encoding_name;
 	List	   *func_name = stmt->func_name;
-	static Oid	funcargs[] = {INT4OID, INT4OID, CSTRINGOID, CSTRINGOID, INT4OID};
+	static Oid	funcargs[] = {INT4OID, INT4OID, CSTRINGOID, INTERNALOID, INT4OID};
 
 	/* Convert list of names to a name and namespace */
 	namespaceId = QualifiedNameGetCreationNamespace(stmt->conversion_name,

src/backend/utils/mb/conversion_procs/Makefile

@@ -4,7 +4,7 @@
 #    Makefile for utils/mb/conversion_procs
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/src/backend/utils/mb/conversion_procs/Makefile,v 1.7.2.1 2003/08/08 15:49:10 tgl Exp $
+#    $Header: /cvsroot/pgsql/src/backend/utils/mb/conversion_procs/Makefile,v 1.7.2.2 2005/05/03 19:18:48 tgl Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -156,7 +156,7 @@ $(SQLSCRIPT): Makefile
 		func=$$1; shift; \
 		obj=$$1; shift; \
 		echo "-- $$se --> $$de"; \
-		echo "CREATE OR REPLACE FUNCTION $$func (INTEGER, INTEGER, CSTRING, CSTRING, INTEGER) RETURNS VOID AS '$$"libdir"/$$obj', '$$func' LANGUAGE 'c' STRICT;"; \
+		echo "CREATE OR REPLACE FUNCTION $$func (INTEGER, INTEGER, CSTRING, INTERNAL, INTEGER) RETURNS VOID AS '$$"libdir"/$$obj', '$$func' LANGUAGE 'c' STRICT;"; \
 		echo "DROP CONVERSION pg_catalog.$$name;"; \
 		echo "CREATE DEFAULT CONVERSION pg_catalog.$$name FOR '$$se' TO '$$de' FROM $$func;"; \
 	done > $@