fixes

check.t

@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/check.t,v 1.749 2016/08/04 20:51:32 tg Exp $
+# $MirOS: src/bin/mksh/check.t,v 1.750 2016/08/10 18:20:03 tg Exp $
 # -*- mode: sh -*-
 #-
 # Copyright © 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,

lksh.1

@@ -1,4 +1,4 @@
-.\" $MirOS: src/bin/mksh/lksh.1,v 1.17 2016/02/11 20:12:09 tg Exp $
+.\" $MirOS: src/bin/mksh/lksh.1,v 1.18 2016/08/10 18:20:05 tg Exp $
 .\"-
 .\" Copyright (c) 2008, 2009, 2010, 2012, 2013, 2015, 2016
 .\"	mirabilos <m@mirbsd.org>
@@ -74,7 +74,7 @@
 .\" with -mandoc, it might implement .Mx itself, but we want to
 .\" use our own definition. And .Dd must come *first*, always.
 .\"
-.Dd $Mdocdate: February 11 2016 $
+.Dd $Mdocdate: August 10 2016 $
 .\"
 .\" Check which macro package we use, and do other -mdoc setup.
 .\"
@@ -241,9 +241,6 @@ Division of the largest negative number by \-1 is Undefined Behaviour.
 The compiler is permitted to delete all data and crash the system
 if Undefined Behaviour occurs (see above for an example).
 .It
-.Nm
-only offers the traditional ten file descriptors to scripts.
-.It
 .\"XXX TODO: move this to FPOSIX
 The rotation arithmetic operators are not available.
 .It

mksh.1

@@ -1,4 +1,4 @@
-.\" $MirOS: src/bin/mksh/mksh.1,v 1.412 2016/08/10 18:15:18 tg Exp $
+.\" $MirOS: src/bin/mksh/mksh.1,v 1.413 2016/08/10 18:20:05 tg Exp $
 .\" $OpenBSD: ksh.1,v 1.160 2015/07/04 13:27:04 feinerer Exp $
 .\"-
 .\" Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
@@ -2681,10 +2681,11 @@ Additionally, base-16 integers may be specified by prefixing them with
 .Pq case-insensitive
 in all forms of arithmetic expressions, except as numeric arguments to the
 .Ic test
-built-in command.
+built-in utility.
 Prefixing numbers with a sole digit zero
 .Pq Sq 0
-does not cause interpretation as octal, as that's unsafe to do.
+does not cause interpretation as octal (except in POSIX mode,
+as required by the standard), as that's unsafe to do.
 .Pp
 As a special
 .Nm mksh
@@ -5424,7 +5425,7 @@ The
 builtin does not interpret backslashes and only supports the exact option
 .Dq Fl n .
 .It
-\&... (list is incomplete and may change for R53)
+\&... (list is incomplete and may change for R54)
 .El
 .Ss SH mode
 Compatibility mode; intended for use with legacy scripts that
@@ -5445,7 +5446,35 @@ The
 builtin does not interpret backslashes and only supports the exact option
 .Dq Fl n .
 .It
-\&... (list is incomplete and may change for R53)
+The substitution operations
+.Sm off
+.Xo
+.Pf ${ Ar x
+.Pf # Ar pat No } ,
+.Sm on
+.Xc
+.Sm off
+.Xo
+.Pf ${ Ar x
+.Pf ## Ar pat No } ,
+.Sm on
+.Xc
+.Sm off
+.Xo
+.Pf ${ Ar x
+.Pf % Ar pat No } ,
+.Sm on
+.Xc
+and
+.Sm off
+.Xo
+.Pf ${ Ar x
+.Pf %% Ar pat No }
+.Sm on
+.Xc
+wrongly do not require a parenthesis to be escaped and do not parse extglobs.
+.It
+\&... (list is incomplete and may change for R54)
 .El
 .Ss Interactive input line editing
 The shell supports three modes of reading command lines from a