Add comment for multi-byte computation.

diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
index 19d9306e4ecdda15d5e1fc35e5f8b5ace7a276a9..6d5f21b52ef8313b0a857b5addd3a1844c253749 100644 (file)
--- a/src/backend/parser/parse_expr.c
+++ b/src/backend/parser/parse_expr.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.182 2005/05/24 15:45:34 ishii Exp $
+ *       $PostgreSQL: pgsql/src/backend/parser/parse_expr.c,v 1.183 2005/06/04 20:56:13 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1556,6 +1556,7 @@ exprTypmod(Node *expr)
                                                {
                                                        int32 len = VARSIZE(DatumGetPointer(con->constvalue)) - VARHDRSZ;
 
+                                                       /* if multi-byte, take len and find # characters */
                                                        if (pg_database_encoding_max_length() > 1)
                                                                len = pg_mbstrlen_with_len(VARDATA(DatumGetPointer(con->constvalue)), len);
                                                        return len + VARHDRSZ;