$NetBSD: patch-ah,v 1.2 2005/11/12 14:17:46 adrianp Exp $

--- env.c.orig	2005-02-06 15:37:01.000000000 +0000
+++ env.c
@@ -89,6 +89,8 @@ static char *format_env		__P((char *, ..
 static const char *initial_badenv_table[] = {
     "IFS",
     "CDPATH",
+    "SHELLOPTS",
+    "PS4",
     "LOCALDOMAIN",
     "RES_OPTIONS",
     "HOSTALIASES",
@@ -124,6 +126,9 @@ static const char *initial_badenv_table[
     "TERMCAP",			/* XXX - only if it starts with '/' */
     "ENV",
     "BASH_ENV",
+    "PERLLIB",
+    "PERL5LIB",
+    "PERL5OPT",
     NULL
 };