Moar minor cleanups

Notable changes:

bin/package:
- In 'package results' output, don't show lines starting with
  'conf: probe' or 'conf: test'; that's normal comp/conf.sh output.

src/cmd/INIT/iffe.sh,
src/cmd/INIT/mamprobe.sh,
src/cmd/ksh93/DESIGN:
- Remove outdated nmake stuff from (self-)doc.
- Update to match current build system.

src/cmd/ksh93/sh.1:
- Remove outdated stuff about removed suid_exec. (re: 09811da)
  At least I think that was about suid_exec; it's very vague.

bin/package

@@ -115,7 +115,7 @@ command=${0##*/}
 case $(getopts '[-][123:xyz]' opt --xyz 2>/dev/null; echo 0$opt) in
 0123)	USAGE=$'
 [-?
-@(#)$Id: '$command$' (ksh 93u+m) 2024-01-22 $
+@(#)$Id: '$command$' (ksh 93u+m) 2024-02-11 $
 ]
 [-author?Glenn Fowler <[email protected]>]
 [-author?Contributors to https://github.com/ksh93/ksh]
@@ -543,7 +543,7 @@ SEE ALSO
   pkgadd(1), pkgmk(1), rpm(1), sh(1), tar(1), optget(3)
 
 IMPLEMENTATION
-  version         package (ksh 93u+m) 2024-01-22
+  version         package (ksh 93u+m) 2024-02-11
   author          Glenn Fowler <[email protected]>
   author          Contributors to https://github.com/ksh93/ksh
   copyright       (c) 1994-2012 AT&T Intellectual Property
@@ -3251,7 +3251,7 @@ results)set -- $target
 					case $filter in
 					errors)	$exeg grep -E '^pax:|\*\*\*' $j
 						;;
-					*)	$exec grep -E -iv '^($||[\+\[]|cc[^-:]|kill |make.*(file system time|has been replaced)|so|[0123456789]+ error|uncrate |[0123456789]+ block|ar: creat|iffe: test: |conf: (check|generate|test)|[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_][abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_0123456789]*=|gsf@research|ar:.*warning|cpio:|ld:.*(duplicate symbol|to obtain more information)|[0123456789]*$|(checking|creating|touch) [/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_0123456789])| obsolete predefined symbol | is (almost always misused|dangerous|deprecated|not implemented)| trigraph| assigned to | cast .* different size| integer overflow .*<<| optimization may be attained | passed as |::__builtin|^creating.*\.a$|warning.*not optimized|exceeds size thresh|ld:.*preempts|is unchanged|with value >=|(-l|lib)\*|/(ast|sys)/(dir|limits|param|stropts)\.h.*redefined|usage|base registers|`\.\.\.` obsolete'"$i" $j |
+					*)	$exec grep -E -iv '^($||[\+\[]|cc[^-:]|kill |make.*(file system time|has been replaced)|so|[0123456789]+ error|uncrate |[0123456789]+ block|ar: creat|iffe: test: |conf: (check|generate|read|probe|test)|[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_][abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_0123456789]*=|gsf@research|ar:.*warning|cpio:|ld:.*(duplicate symbol|to obtain more information)|[0123456789]*$|(checking|creating|touch) [/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_0123456789])| obsolete predefined symbol | is (almost always misused|dangerous|deprecated|not implemented)| trigraph| assigned to | cast .* different size| integer overflow .*<<| optimization may be attained | passed as |::__builtin|^creating.*\.a$|warning.*not optimized|exceeds size thresh|ld:.*preempts|is unchanged|with value >=|(-l|lib)\*|/(ast|sys)/(dir|limits|param|stropts)\.h.*redefined|usage|base registers|`\.\.\.` obsolete'"$i" $j |
 						$exec grep :
 						;;
 					esac

src/cmd/INIT/Mamfile

@@ -134,7 +134,7 @@ make install virtual
 		exec -				*PLUGIN_LIB=*)
 		exec -					p=$x ;;
 		exec -				*)	case $u in
-		exec -					?*	 u=$u$N ;;
+		exec -					?*)	 u=$u$N ;;
 		exec -					esac
 		exec -					u=$u$x ;;
 		exec -				esac

src/cmd/INIT/iffe.sh

@@ -2,7 +2,7 @@
 #                                                                      #
 #               This software is part of the ast package               #
 #          Copyright (c) 1994-2012 AT&T Intellectual Property          #
-#          Copyright (c) 2020-2023 Contributors to ksh 93u+m           #
+#          Copyright (c) 2020-2024 Contributors to ksh 93u+m           #
 #                      and is licensed under the                       #
 #                 Eclipse Public License, Version 2.0                  #
 #                                                                      #
@@ -653,7 +653,7 @@ case $( (getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null ) in
 [-author?Phong Vo <[email protected]>]
 [-author?Contributors to https://github.com/ksh93/ksh]
 [-copyright?(c) 1994-2012 AT&T Intellectual Property]
-[-copyright?(c) 2020-2023 Contributors to ksh 93u+m]
+[-copyright?(c) 2020-2024 Contributors to ksh 93u+m]
 [-license?https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html]
 [+NAME?iffe - C compilation environment feature probe]
 [+DESCRIPTION?\biffe\b is a command interpreter that probes the C
@@ -804,13 +804,8 @@ case $( (getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null ) in
 			\b'"$dir"$'/\b\abase\a.]
 	}
 [+?Generated \biffe\b headers are often referenced in C source as:
-	\b#include "'"$dir"$'/\b\afile\a". The \bnmake\b(1) base rules contain
-	metarules for generating \b'"$dir"$'/\b\afile\a from
-	\bfeatures/\b\afile\a[\asuffix\a]], where \asuffix\a may be omitted,
-	\b.c\b, or \b.sh\b (see the \brun\b test below). Because
-	\b#include\b prerequisites are automatically detected, \bnmake\b(1)
-	ensures that all prerequisite \biffe\b headers are generated before
-	compilation. Note that the directories are deliberately named
+	\b#include "'"$dir"$'/\b\afile\a".
+	Note that the directories are deliberately named
 	\b'"$dir"$'\b and \bfeatures\b to keep case-ignorant file systems
 	happy.]
 [+?The feature tests are:]{
@@ -995,7 +990,7 @@ case $( (getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null ) in
 		\bendif\b } with unnamed \b{\b ... \b}\b blocks.]
 }
 [+SEE ALSO?\bautoconf\b(1), \bconfig\b(1), \bgetconf\b(1), \bcrossexec\b(1),
-	\bnmake\b(1), \bpackage\b(1), \bsh\b(1)]
+	\bpackage\b(1), \bsh\b(1)]
 '
 	while	getopts -a "$command" "$USAGE" OPT
 	do	case $OPT in

src/cmd/INIT/mamprobe.sh

@@ -2,7 +2,7 @@
 #                                                                      #
 #               This software is part of the ast package               #
 #          Copyright (c) 1994-2011 AT&T Intellectual Property          #
-#          Copyright (c) 2020-2022 Contributors to ksh 93u+m           #
+#          Copyright (c) 2020-2024 Contributors to ksh 93u+m           #
 #                      and is licensed under the                       #
 #                 Eclipse Public License, Version 2.0                  #
 #                                                                      #
@@ -37,7 +37,7 @@ opt=
 case `(getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null` in
 0123)	USAGE=$'
 [-?
-@(#)$Id: mamprobe (ksh 93u+m) 2022-10-26 $
+@(#)$Id: mamprobe (ksh 93u+m) 2024-02-10 $
 ]
 [+NAME?mamprobe - generate MAM cc probe info]
 [+DESCRIPTION?\bmamprobe\b generates MAM (make abstract machine) \bcc\b(1)
@@ -48,10 +48,7 @@ case `(getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null` in
 	of \acc-path\a. Any \ainfo-file\a directories are created if needed.
 	If \ainfo-file\a is \b-\b then the probe information is written to
 	the standard output.]
-[+?\bmamprobe\b and \bmamake\b are used in the bootstrap phase of
-	\bpackage\b(1) installation before \bnmake\b(1) is built. The
-	probed variable names are the \bnmake\b(1) names with a \bmam_\b
-	prefix, \bCC\b converted to \bcc\b,  and \b.\b converted to \b_\b.
+[+?The probed variable names get a \bmam_\b prefix.
 	Additional variables are:]{
 		[+_hosttype_?the \bpackage\b(1) host type]
 		[+mam_cc_L?\b-L\b\adir\a supported]
@@ -69,7 +66,7 @@ case `(getopts '[-][123:xyz]' opt --xyz; echo 0$opt) 2>/dev/null` in
 
 info-file cc-path
 
-[+SEE ALSO?\bpackage\b(1), \bmamake\b(1), \bnmake\b(1), \bprobe\b(1)]
+[+SEE ALSO?\bpackage\b(1), \bmamake\b(1), \bprobe\b(1)]
 '
 	while	getopts -a "$command" "$USAGE" OPT
 	do	case $OPT in

src/cmd/ksh93/DESIGN

@@ -31,17 +31,17 @@ Directory layout:
 
 	The directory tests contains a number of regression tests.
 	In most cases, when a bug gets fixed, a test is added to
-	one of these files.  The regression tests can be run by
-	going to this directory and running
-		SHELL=shell_path shell_path shtests
-	where shell_path is an absolute pathname for the shell to
-	be tested.
+	one of these files.  The ksh regression tests can be run by
+	invoking the shtests script in the top-level bin directory;
+	see 'bin/shtests --man' for documentation about the options.
+	They are also run with default options via 'bin/package tests'
+	as part of a complete test suite run that also includes tests
+	for the build system itself.
 
-	The top level directory contains the nmake Makefile, the
-        RELEASE file, the ksh93 man file (sh.1) and nval.3 and shell.3
-        documentation files. The RELEASE file contains the list of bug
-	fixes and new features since the original ksh93 release.  The file
-	COMPATIBILITY is a list of all known incompatibilities with ksh88.
+	The top level directory contains the mamake Mamfile, the ksh93
+	manual page (sh.1) and the nval.3 and shell.3 documentation files.
+	The file COMPATIBILITY is a list of all known incompatibilities
+	with previous AT&T releases.
 
 Include directory:
 	1.	argnod.h contains the type definitions for command

src/cmd/ksh93/bltins/print.c

@@ -295,6 +295,7 @@ int    b_print(int argc, char *argv[], Shbltin_t *context)
 						nflag++;
 						argv++;
 					}
+					opt_info.disc = NULL;
 					goto skip2;
 				}
 			}

src/cmd/ksh93/include/edit.h

@@ -2,7 +2,7 @@
 *                                                                      *
 *               This software is part of the ast package               *
 *          Copyright (c) 1982-2012 AT&T Intellectual Property          *
-*          Copyright (c) 2020-2023 Contributors to ksh 93u+m           *
+*          Copyright (c) 2020-2024 Contributors to ksh 93u+m           *
 *                      and is licensed under the                       *
 *                 Eclipse Public License, Version 2.0                  *
 *                                                                      *

src/cmd/ksh93/sh.1

@@ -4573,16 +4573,6 @@ file,
 it is assumed to be a file containing shell commands.
 A separate shell is spawned to read it.
 All non-exported variables are removed in this case.
-If the shell command
-file doesn't have read permission,
-or if the
-.I setuid
-and/or
-.I setgid
-bits are set on the file,
-then the shell executes an agent whose job it is to
-set up the permissions and execute the shell with the
-shell command file passed down as an open file.
 If the
 .B .paths
 contains a line of the form

src/cmd/ksh93/tests/subshell.sh

@@ -2,7 +2,7 @@
 #                                                                      #
 #               This software is part of the ast package               #
 #          Copyright (c) 1982-2012 AT&T Intellectual Property          #
-#          Copyright (c) 2020-2023 Contributors to ksh 93u+m           #
+#          Copyright (c) 2020-2024 Contributors to ksh 93u+m           #
 #                      and is licensed under the                       #
 #                 Eclipse Public License, Version 2.0                  #
 #                                                                      #