slightly optimised and, more importantly, much more consistent (use only

one set of CTRL, UNCTRL, and new ISCTRL macros) C0 and DEL handling; the
optimisation only works for 7-bit ASCII, so those places 8-bit must pass
intact have an added check

also, while here, remove an editor oops (‘;’), oksh rcsid sync (they did
accept I was right wrt. set -e), int → bool, and code merge/cleanup

eval.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: eval.c,v 1.39 2013/07/01 17:25:27 jca Exp $	*/
+/*	$OpenBSD: eval.c,v 1.40 2013/09/14 20:09:30 millert Exp $	*/
 
 /*-
  * Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
@@ -23,7 +23,7 @@
 
 #include "sh.h"
 
-__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.142 2013/07/24 18:03:57 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/eval.c,v 1.143 2013/09/24 20:19:44 tg Exp $");
 
 /*
  * string expansion