diff --git a/orig/postgresql-9.0beta2/src/backend/parser/scansup.c b/postgresql-9.0beta2/src/backend/parser/scansup.c
index 94082f7..179b37e 100644
--- a/orig/postgresql-9.0beta2/src/backend/parser/scansup.c
+++ b/postgresql-9.0beta2/src/backend/parser/scansup.c
@@ -129,33 +129,11 @@ char *
 downcase_truncate_identifier(const char *ident, int len, bool warn)
 {
 	char	   *result;
-	int			i;
-
-	result = palloc(len + 1);
-
-	/*
-	 * SQL99 specifies Unicode-aware case normalization, which we don't yet
-	 * have the infrastructure for.  Instead we use tolower() to provide a
-	 * locale-aware translation.  However, there are some locales where this
-	 * is not right either (eg, Turkish may do strange things with 'i' and
-	 * 'I').  Our current compromise is to use tolower() for characters with
-	 * the high bit set, and use an ASCII-only downcasing for 7-bit
-	 * characters.
-	 */
-	for (i = 0; i < len; i++)
-	{
-		unsigned char ch = (unsigned char) ident[i];
 
-		if (ch >= 'A' && ch <= 'Z')
-			ch += 'a' - 'A';
-		else if (IS_HIGHBIT_SET(ch) && isupper(ch))
-			ch = tolower(ch);
-		result[i] = (char) ch;
-	}
-	result[i] = '\0';
+	result = str_tolower(ident, len);
 
-	if (i >= NAMEDATALEN)
-		truncate_identifier(result, i, warn);
+	if (len >= NAMEDATALEN)
+		truncate_identifier(result, len, warn);
 
 	return result;
 }