diff --git a/NEWS b/NEWS
index 0348b5174..c625356c7 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,18 @@ For full details, see the git log at: https://github.com/ksh93/ksh
 
 Any uppercase BUG_* names are modernish shell bug IDs.
 
+2020-09-01:
+
+- The bash-style '&>file' redirection shorthand (for '>file 2>&1') is now
+  always recognised and not only when running rc/profile init scripts. It no
+  longer issues a warning. This brings ksh93 in line with mksh, bash and zsh.
+
+- A long-form shell option '-o posix' has been added, which implements a
+  mode for better compatibility with the POSIX standard. It is automatically
+  turned on if ksh is invoked under the name 'sh'.
+  For now, it:
+  * disables the &> redirection shorthand
+
 2020-08-19:
 
 - Sped up the 'read' command on most systems by 15-25%. Fixed a hanging bug
diff --git a/src/cmd/ksh93/DESIGN b/src/cmd/ksh93/DESIGN
index 2c621767b..6d10a3f1b 100644
--- a/src/cmd/ksh93/DESIGN
+++ b/src/cmd/ksh93/DESIGN
@@ -43,10 +43,6 @@ Directory layout:
 	fixes and new features since the original ksh93 release.  The file
 	COMPATIBILITY is a list of all known incompatibilities with ksh88.
 
-	The  data/bash_pre_rc.sh is a startup script used when emulating
-	bash if the shell is compiled with SHOPT_BASH and the shell
-	is invoked as bash.  The bash emulation is not complete.
-
 Include directory:
 	1.	argnod.h contains the type definitions for command
 		nodes, io nodes, argument nodes, and for positional
@@ -111,8 +107,7 @@ sh directory:
 		library and the interface to shell arithmetic.
 	3.	array.c contains the code for indexed and associative
 		arrays.
-	4.      bash.c contains code used when compiling with SHOPT_BASH
-		to add bash specific features such as shopt.
+	4.      (removed)
 	5.	defs.c contains the data definitions for global symbols.
 	6.	deparse.c contains code to generate shell script from
 		a parse tree.
diff --git a/src/cmd/ksh93/Makefile b/src/cmd/ksh93/Makefile
index e57fcb662..095987757 100644
--- a/src/cmd/ksh93/Makefile
+++ b/src/cmd/ksh93/Makefile
@@ -20,7 +20,6 @@ SHOPT_ACCT ==  			/* accounting */
 SHOPT_ACCTFILE ==  		/* per user accounting info */
 SHOPT_AUDIT == 1		/* enable auditing per SHOPT_AUDITFILE */
 SHOPT_AUDITFILE == "/etc/ksh_audit"  		/* auditing file */
-SHOPT_BASH ==			/* bash compatibility code */
 SHOPT_BGX == 1			/* one SIGCHLD trap per completed job */
 SHOPT_BRACEPAT == 1		/* C-shell {...,...} expansions (, required) */
 SHOPT_CMDLIB_HDR ==		/* -lcmd builtin list (<cmdlist.h>) */
@@ -98,11 +97,6 @@ if  CC.HOSTTYPE == "win32*"
 	SHOPT_CRNL == 1		/* <cr><nl> is equivalent to <nl> */
 end
 
-if SHOPT_BASH
-	BASH_HOSTTYPE == "$(CC.HOSTTYPE:S:/\.//)"
-	BASH_MACHTYPE == "$(BASH_HOSTTYPE)-unknown-$(CC.HOSTTYPE:B)"
-end
-
 /* use the following libraries only if they exist */
 LIBS_opt := +ljobs +li
 
@@ -136,10 +130,6 @@ end
 if SHOPT_VSH
 	FILES_opt += vi.c
 end
-if SHOPT_BASH
-	FILES_opt += bash.c bash_pre_rc.c
-	SHOPT_HISTEXPAND == 1
-end
 if SHOPT_HISTEXPAND
 	FILES_opt += hexpand.c
 end
@@ -150,7 +140,7 @@ if SHOPT_X
 	LDFLAGS += -u _XtAppInitialize -L/usr/add-on/X11/lib
 end
 
-:ALL: $(SH) $(SHCOMP) $(SHOPT_SUID_EXEC:+suid_exec) $(SHOPT_BASH:+bash$(RELEASE))
+:ALL: $(SH) $(SHCOMP) $(SHOPT_SUID_EXEC:+suid_exec)
 
 $(SH) :: sh.1 pmain.c $(LIBS_req)
 
@@ -191,19 +181,8 @@ $(FUNDIR) :INSTALLDIR: mode=+x dirs popd pushd
 
 shcomp.o : _BLD_DLL= $(CC.HOSTTYPE:N=cygwin.*:??_BLD_shell=?)
 
-if SHOPT_BASH
-
-bash$(RELEASE) :LINK: $(SH)
-
-bash_pre_rc.c : bash_pre_rc.sh
-	echo "const char bash_pre_rc[] = " > $(<)
-	sed -e 's/\\/\\\\/g' -e 's/"/\\"/g' -e 's/'"'"'/\\'"'"'/g' -e 's/^[[:space:]]*\(.*\)$/\"\1\\n\"/' $(*) >> $(<)
-	echo ";" >> $(<)
-
-end
-
 :: math.tab syscall.s mamexec mamstate.c $(DOCFILES) \
-	bash.c bash_pre_rc.sh hexpand.c mkservice.c \
+	hexpand.c mkservice.c \
 	shopen.mk shopen.c
 
 :: shtests \
diff --git a/src/cmd/ksh93/Mamfile b/src/cmd/ksh93/Mamfile
index af797b7fd..7baf0b285 100644
--- a/src/cmd/ksh93/Mamfile
+++ b/src/cmd/ksh93/Mamfile
@@ -645,7 +645,7 @@ prev ${PACKAGE_ast_INCLUDE}/ast.h implicit
 done sh/main.c
 meta main.o %.c>%.o sh/main.c main
 prev sh/main.c
-exec - ${CC} ${mam_cc_FLAGS} ${CCFLAGS} ${-debug-symbols?1?${mam_cc_DEBUG} -D_BLD_DEBUG?${CCFLAGS.FORCE}?} ${DEBUG+-DDEBUG=${DEBUG}} ${SHOPT_TIMEOUT+-DSHOPT_TIMEOUT=${SHOPT_TIMEOUT}} ${SHOPT_ACCT+-DSHOPT_ACCT=${SHOPT_ACCT}} ${SH_DICT+-DSH_DICT=${SH_DICT}} ${SHOPT_SYSRC+-DSHOPT_SYSRC=${SHOPT_SYSRC}} ${SHOPT_BASH+-DSHOPT_BASH=${SHOPT_BASH}} ${SHOPT_REMOTE+-DSHOPT_REMOTE=${SHOPT_REMOTE}} ${SHOPT_OLDTERMIO+-DSHOPT_OLDTERMIO=${SHOPT_OLDTERMIO}} ${SHOPT_SPAWN+-DSHOPT_SPAWN=${SHOPT_SPAWN}} ${SH_CMDLIB_DIR+-DSH_CMDLIB_DIR=${SH_CMDLIB_DIR}} ${SHOPT_P_SUID+-DSHOPT_P_SUID=${SHOPT_P_SUID}} ${SHOPT_REGRESS+-DSHOPT_REGRESS=${SHOPT_REGRESS}} -I. -Iinclude -I${PACKAGE_ast_INCLUDE} -DSHOPT_BRACEPAT -D_API_ast=20100309 -D_PACKAGE_ast -DSHOPT_ESH -D_BLD_shell -DSHOPT_KIA -DSHOPT_MULTIBYTE -DSHOPT_PFSH -DSHOPT_BGX -DKSHELL -DSHOPT_SUID_EXEC -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_HISTEXPAND -DERROR_CONTEXT_T=Error_context_t -DSHOPT_FIXEDARRAY -DSHOPT_DYNAMIC -c sh/main.c
+exec - ${CC} ${mam_cc_FLAGS} ${CCFLAGS} ${-debug-symbols?1?${mam_cc_DEBUG} -D_BLD_DEBUG?${CCFLAGS.FORCE}?} ${DEBUG+-DDEBUG=${DEBUG}} ${SHOPT_TIMEOUT+-DSHOPT_TIMEOUT=${SHOPT_TIMEOUT}} ${SHOPT_ACCT+-DSHOPT_ACCT=${SHOPT_ACCT}} ${SH_DICT+-DSH_DICT=${SH_DICT}} ${SHOPT_SYSRC+-DSHOPT_SYSRC=${SHOPT_SYSRC}} ${SHOPT_REMOTE+-DSHOPT_REMOTE=${SHOPT_REMOTE}} ${SHOPT_OLDTERMIO+-DSHOPT_OLDTERMIO=${SHOPT_OLDTERMIO}} ${SHOPT_SPAWN+-DSHOPT_SPAWN=${SHOPT_SPAWN}} ${SH_CMDLIB_DIR+-DSH_CMDLIB_DIR=${SH_CMDLIB_DIR}} ${SHOPT_P_SUID+-DSHOPT_P_SUID=${SHOPT_P_SUID}} ${SHOPT_REGRESS+-DSHOPT_REGRESS=${SHOPT_REGRESS}} -I. -Iinclude -I${PACKAGE_ast_INCLUDE} -DSHOPT_BRACEPAT -D_API_ast=20100309 -D_PACKAGE_ast -DSHOPT_ESH -D_BLD_shell -DSHOPT_KIA -DSHOPT_MULTIBYTE -DSHOPT_PFSH -DSHOPT_BGX -DKSHELL -DSHOPT_SUID_EXEC -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_HISTEXPAND -DERROR_CONTEXT_T=Error_context_t -DSHOPT_FIXEDARRAY -DSHOPT_DYNAMIC -c sh/main.c
 done main.o generated
 make nvdisc.o
 make sh/nvdisc.c
@@ -1101,7 +1101,7 @@ prev include/defs.h implicit
 done sh/trestore.c
 meta trestore.o %.c>%.o sh/trestore.c trestore
 prev sh/trestore.c
-exec - ${CC} ${mam_cc_FLAGS} ${CCFLAGS} ${-debug-symbols?1?${mam_cc_DEBUG} -D_BLD_DEBUG?${CCFLAGS.FORCE}?} ${SHOPT_BASH+-DSHOPT_BASH=${SHOPT_BASH}} ${SHOPT_SYSRC+-DSHOPT_SYSRC=${SHOPT_SYSRC}} ${SHOPT_ACCT+-DSHOPT_ACCT=${SHOPT_ACCT}} ${SHOPT_SPAWN+-DSHOPT_SPAWN=${SHOPT_SPAWN}} ${SH_CMDLIB_DIR+-DSH_CMDLIB_DIR=${SH_CMDLIB_DIR}} ${SH_DICT+-DSH_DICT=${SH_DICT}} ${SHOPT_P_SUID+-DSHOPT_P_SUID=${SHOPT_P_SUID}} ${SHOPT_REGRESS+-DSHOPT_REGRESS=${SHOPT_REGRESS}} -I. -Iinclude -I${PACKAGE_ast_INCLUDE} -D_BLD_shell -DKSHELL -D_API_ast=20100309 -D_PACKAGE_ast -DSHOPT_SUID_EXEC -DSHOPT_BRACEPAT -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_PFSH -DSHOPT_HISTEXPAND -DERROR_CONTEXT_T=Error_context_t -DSHOPT_FIXEDARRAY -DSHOPT_ESH -DSHOPT_MULTIBYTE -c sh/trestore.c
+exec - ${CC} ${mam_cc_FLAGS} ${CCFLAGS} ${-debug-symbols?1?${mam_cc_DEBUG} -D_BLD_DEBUG?${CCFLAGS.FORCE}?} ${SHOPT_SYSRC+-DSHOPT_SYSRC=${SHOPT_SYSRC}} ${SHOPT_ACCT+-DSHOPT_ACCT=${SHOPT_ACCT}} ${SHOPT_SPAWN+-DSHOPT_SPAWN=${SHOPT_SPAWN}} ${SH_CMDLIB_DIR+-DSH_CMDLIB_DIR=${SH_CMDLIB_DIR}} ${SH_DICT+-DSH_DICT=${SH_DICT}} ${SHOPT_P_SUID+-DSHOPT_P_SUID=${SHOPT_P_SUID}} ${SHOPT_REGRESS+-DSHOPT_REGRESS=${SHOPT_REGRESS}} -I. -Iinclude -I${PACKAGE_ast_INCLUDE} -D_BLD_shell -DKSHELL -D_API_ast=20100309 -D_PACKAGE_ast -DSHOPT_SUID_EXEC -DSHOPT_BRACEPAT -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_PFSH -DSHOPT_HISTEXPAND -DERROR_CONTEXT_T=Error_context_t -DSHOPT_FIXEDARRAY -DSHOPT_ESH -DSHOPT_MULTIBYTE -c sh/trestore.c
 done trestore.o generated
 make waitevent.o
 make sh/waitevent.c
@@ -1189,7 +1189,7 @@ prev ${PACKAGE_ast_INCLUDE}/ast_standards.h implicit
 done data/strdata.c
 meta strdata.o %.c>%.o data/strdata.c strdata
 prev data/strdata.c
-exec - ${CC} ${mam_cc_FLAGS} ${CCFLAGS} ${-debug-symbols?1?${mam_cc_DEBUG} -D_BLD_DEBUG?${CCFLAGS.FORCE}?} ${SHOPT_BASH+-DSHOPT_BASH=${SHOPT_BASH}} ${SH_CMDLIB_DIR+-DSH_CMDLIB_DIR=${SH_CMDLIB_DIR}} ${SH_DICT+-DSH_DICT=${SH_DICT}} ${SHOPT_P_SUID+-DSHOPT_P_SUID=${SHOPT_P_SUID}} ${SHOPT_REGRESS+-DSHOPT_REGRESS=${SHOPT_REGRESS}} -I. -Iinclude -I${PACKAGE_ast_INCLUDE} -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_PFSH -DSHOPT_HISTEXPAND -D_BLD_shell -D_API_ast=20100309 -D_PACKAGE_ast -DERROR_CONTEXT_T=Error_context_t -DSHOPT_FIXEDARRAY -DSHOPT_ESH -DSHOPT_MULTIBYTE -c data/strdata.c
+exec - ${CC} ${mam_cc_FLAGS} ${CCFLAGS} ${-debug-symbols?1?${mam_cc_DEBUG} -D_BLD_DEBUG?${CCFLAGS.FORCE}?} ${SH_CMDLIB_DIR+-DSH_CMDLIB_DIR=${SH_CMDLIB_DIR}} ${SH_DICT+-DSH_DICT=${SH_DICT}} ${SHOPT_P_SUID+-DSHOPT_P_SUID=${SHOPT_P_SUID}} ${SHOPT_REGRESS+-DSHOPT_REGRESS=${SHOPT_REGRESS}} -I. -Iinclude -I${PACKAGE_ast_INCLUDE} -DSHOPT_STATS -DSHOPT_NAMESPACE -DSHOPT_PFSH -DSHOPT_HISTEXPAND -D_BLD_shell -D_API_ast=20100309 -D_PACKAGE_ast -DERROR_CONTEXT_T=Error_context_t -DSHOPT_FIXEDARRAY -DSHOPT_ESH -DSHOPT_MULTIBYTE -c data/strdata.c
 done strdata.o generated
 make testops.o
 make data/testops.c
diff --git a/src/cmd/ksh93/data/bash_pre_rc.sh b/src/cmd/ksh93/data/bash_pre_rc.sh
deleted file mode 100644
index 4f8a451ea..000000000
--- a/src/cmd/ksh93/data/bash_pre_rc.sh
+++ /dev/null
@@ -1,255 +0,0 @@
-########################################################################
-#                                                                      #
-#               This software is part of the ast package               #
-#          Copyright (c) 1982-2011 AT&T Intellectual Property          #
-#                      and is licensed under the                       #
-#                 Eclipse Public License, Version 1.0                  #
-#                    by AT&T Intellectual Property                     #
-#                                                                      #
-#                A copy of the License is available at                 #
-#          http://www.eclipse.org/org/documents/epl-v10.html           #
-#         (with md5 checksum b35adb5213ca9657e911e9befb180842)         #
-#                                                                      #
-#              Information and Software Systems Research               #
-#                            AT&T Research                             #
-#                           Florham Park NJ                            #
-#                                                                      #
-#                  David Korn <dgk@research.att.com>                   #
-#                                                                      #
-########################################################################
-#
-# bash compatibility startup script
-#
-# Author:
-# Karsten Fleischer
-# Omnium Software Engineering
-# An der Luisenburg 7
-# D-51379 Leverkusen
-# Germany
-#
-# <K.Fleischer@omnium.de>
-#
-
-alias declare=typeset
-
-nameref FUNCNAME=.sh.fun
-integer SHLVL
-export SHLVL
-SHLVL+=1
-
-if	[[ ! $EUID ]]
-then	EUID=$(id -u)
-	readonly EUID
-fi
-
-if	[[ ! $UID ]]
-then	UID=$(id -u)
-	readonly UID
-fi
-
-readonly SHELLOPTS
-if ! shopt -qo restricted; then
-	IFS=:
-	for i in $SHELLOPTS
-	do
-		[[ -n "$i" ]] && set -o $i
-	done
-	unset IFS
-fi
-function SHELLOPTS.get
-{
-	.sh.value=$(shopt -so)
-	.sh.value=${.sh.value//+([[:space:]])on*([[:space:]])/:}
-	.sh.value=${.sh.value%:}
-}
-
-set -A GROUPS $(id -G)
-function GROUPS.set
-{
-	return 1
-}
-function GROUPS.unset
-{
-	unset -f GROUPS.set
-	unset -f GROUPS.unset
-}
-
-typeset -A DIRSTACK
-function DIRSTACK.get
-{
-	set -A .sh.value $(dirs)
-}
-function DIRSTACK.set
-{
-	integer index
-	index=_push_max-.sh.subscript
-	(( index == _push_max || index < _push_top )) && return
-	_push_stack[index]=${.sh.value}
-}
-function DIRSTACK.unset
-{
-	unset -f DIRSTACK.get
-	unset -f DIRSTACK.set
-	unset -f DIRSTACK.unset
-}
-
-function PS1.set 
-{
-	typeset prefix remaining=${.sh.value} var= n= k=
-	while	[[ $remaining ]]
-	do	prefix=${remaining%%'\'*}
-		remaining=${remaining#$prefix}
-		var+="$prefix"
-		case ${remaining:1:1} in
-		t)	var+="\$(printf '%(%H:%M:%S)T')";;
-		d)	var+="\$(printf '%(%a %b:%e)T')";;
-		n)	var+=$'\n';;
-		s)	var+=ksh;;
-		w)	var+="\$(pwd)";;
-		W)	var+="\$(basename \"\$(pwd)\")";;
-		u)	var+=$USER;;
-		h)	var+=$(hostname -s);;
-		'#')	var+=!;;
-		!)	var+=!;;
-		@)	var+="\$(printf '%(%I:%M%p)T')";;
-		'$')	if	(( $(id -u) == 0 ))
-			then	var+='#'
-			else	var+='$'
-			fi;;
-		'\')	var+='\\';;
-		'['|']')	;;
-		[0-7])	case ${remaining:1:3} in
-			[0-7][0-7][0-7])
-				k=4;;
-			[0-7][0-7])
-				k=3;;
-			*)	k=2;;
-			esac
-			eval n="\$'"${remaining:0:k}"'"
-			var+=$n
-			remaining=${remaining:k}
-			continue
-			;;
-		"")	;;
-		*)	var+='\'${remaining:0:2};;
-		esac
-		remaining=${remaining:2}
-	done
-	.sh.value=$var
-}
-function logout
-{
-	if shopt -q login_shell; then
-		exit
-	else
-		print ${BASH##*/}: $0: not login shell: use 'exit' >&2
-		return 1
-	fi
-}
-PS1="bash$ "
-
-function source
-{
-	if ! shopt -qpo posix; then
-		unset	OPATH
-		typeset OPATH=$PATH
-		typeset PATH=$PATH
-		if shopt -q sourcepath; then
-			PATH=$OPATH:.
-		else
-			PATH=.
-		fi
-	fi
-	. "$@"
-}
-unalias .
-alias .=source
-
-alias enable=builtin
-
-function help
-{
-	typeset b cmd usage try_cmd man
-	function has_help_option
-	{
-		[[ $1 == @(''|/*|:|echo|false|true|login|test|'[') ]] && return 1
-		return 0
-	}
-	typeset -A short_use=(
-		[echo]='Usage: echo [ options ] [arg]...'
-		[:]='Usage: : ...'
-		[true]='Usage: true ...'
-		[false]='Usage: false ...'
-		[login]='Usage: login [-p] [name]'
-		['[']='Usage: [ EXPRESSION ] | [ OPTION'
-		[test]='Usage: test EXPRESSION | test'
-	)
-	b=$(builtin)
-	if	(( $# == 0))
-	then	print 'The following is the current list of built-in commands:'
-		print -r $'Type help *name* for more information about name\n'
-		for cmd in $b
-		do	if	has_help_option $cmd
-			then	usage=$($cmd --short 2>&1)
-				print -r -- "${usage:7}"
-			else	print -r -- ${short_use[$cmd]:7}
-			fi
-		done
-		return
-	fi
-	b=${b/'['/}
-	man=--man
-	[[ $1 == -s ]] && man=--short && shift
-	for try_cmd
-	do	if	has_help_option $try_cmd
-		then	if	[[ $try_cmd == @(${b//$'\n'/'|'}) ]]
-			then	$try_cmd $man
-			else	man $try_cmd
-			fi
-		elif	[[ $man == '--short' ]]
-		then	print -r -- ${short_use[$try_cmd]}
-		else	man $try_cmd
-		fi
-	done
-}
-
-function cd
-{
-
-	local msg
-	local args
-	local i
-	local a
-	local ret
-
-	if ! shopt -q cdable_vars; then
-		command cd "$@"
-	else
-		msg=$(command cd "$@" 2>&1)
-		ret=$?
-		if [[ $ret != 0 ]]; then
-			for i
-			do
-				case $i in
-				-*)	args="$args $i" ;;
-				*/*)	args="$args $i" ;;
-				*)	eval a="$"$i
-					if [[ -n $a ]]; then args="$args $a"
-					else args="$args $i"
-					fi
-					;;
-				esac
-			done
-
-			command cd $args
-		else
-			print -- $msg
-			return $ret
-		fi
-	fi
-}
-
-typeset BASH=$0
-! shopt -qo posix && HISTFILE=~/.bash_history
-HOSTNAME=$(hostname)
-nameref BASH_SUBSHELL=.sh.subshell
diff --git a/src/cmd/ksh93/data/builtins.c b/src/cmd/ksh93/data/builtins.c
index a68f82ef8..c39e363f5 100644
--- a/src/cmd/ksh93/data/builtins.c
+++ b/src/cmd/ksh93/data/builtins.c
@@ -54,7 +54,6 @@
 /*
  * IMPORTANT: The order of these struct members must be synchronous
  * with the offsets on the macros defined in include/builtins.h!
- * The order up through "local" is significant.
  */
 const struct shtable3 shtab_builtins[] =
 {
@@ -81,9 +80,6 @@ const struct shtable3 shtab_builtins[] =
 	".",		NV_BLTIN|BLT_ENV|BLT_SPC,	bltin(dot_cmd),
 	"source",	NV_BLTIN|BLT_ENV,		bltin(dot_cmd),
 	"return",	NV_BLTIN|BLT_ENV|BLT_SPC,	bltin(return),
-#if SHOPT_BASH
-	"local",	NV_BLTIN|BLT_ENV|BLT_SPC|BLT_DCL,bltin(typeset),
-#endif
 /*
  * Builtins without offset macros in include/builtins.h follow.
  */
@@ -220,13 +216,6 @@ const char sh_set[] =
 		"[+gmacs?Enables/disables \bgmacs\b editing mode.  \bgmacs\b "
 			"editing mode is the same as \bemacs\b editing mode "
 			"except for the handling of \b^T\b.]"
-#if SHOPT_BASH
-		"[+hashall?Equivalent to \b-h\b and \b-o trackall\b. Available "
-		"in bash compatibility mode only.]"
-		"[+history?Enable command history. Available in bash "
-		"compatibility mode only. On by default in interactive "
-		"shells.]"
-#endif
 #if SHOPT_HISTEXPAND
 		"[+histexpand?Equivalent to \b-H\b.]"
 #endif
@@ -247,20 +236,12 @@ const char sh_set[] =
 			"compatibility.]"
 		"[+notify?Equivalent to \b-b\b.]"
 		"[+nounset?Equivalent to \b-u\b.]"
-#if SHOPT_BASH
-		"[+onecmd?Equivalent to \b-t\b. Available in bash compatibility "
-		"mode only.]"
-		"[+physical?Equivalent to \b-P\b. Available in bash "
-		"compatibility mode only.]"
-		"[+posix?Turn on POSIX compatibility. Available in bash "
-		"compatibility mode only. Bash in POSIX mode is not the "
-		"same as ksh.]"
-#endif
 		"[+pipefail?A pipeline will not complete until all components "
 			"of the pipeline have completed, and the exit status "
 			"of the pipeline will be the value of the last "
 			"command to exit with non-zero exit status, or will "
 			"be zero if all commands return zero exit status.]"
+		"[+posix?Enable POSIX standard compatibility mode.]"
 		"[+privileged?Equivalent to \b-p\b.]"
 		"[+rc?Do not run the \b.kshrc\b file for interactive shells.]"
 		"[+showme?Simple commands preceded by a \b;\b will be traced "
@@ -289,9 +270,6 @@ const char sh_set[] =
 "[x?Execution trace.  The shell will display each command after all "
 	"expansion and before execution preceded by the expanded value "
 	"of the \bPS4\b parameter.]"
-#if SHOPT_BASH
-	"\fbash1\f"
-#endif
 #if SHOPT_BRACEPAT
 "[B?Enable {...} group expansion. On by default.]"
 #endif
@@ -1569,9 +1547,6 @@ USAGE_LICENSE
 "[I:regress]:[intercept?Enable the regression test \aintercept\a. Must be "
 	"the first command line option(s).]"
 #endif
-#if SHOPT_BASH
-   "\fbash2\f"
-#endif
 "\fabc\f"
 "?"
 "[T?Enable implementation specific test code defined by mask.]#[mask]"
diff --git a/src/cmd/ksh93/data/lexstates.c b/src/cmd/ksh93/data/lexstates.c
index 90938c13a..b06d8ca43 100644
--- a/src/cmd/ksh93/data/lexstates.c
+++ b/src/cmd/ksh93/data/lexstates.c
@@ -402,7 +402,6 @@ const char e_lexobsolete3[]	= "line %d: '=' obsolete, use '=='";
 const char e_lexobsolete4[]	= "line %d: %s within [[...]] obsolete, use ((...))";
 const char e_lexobsolete5[]	= "line %d: set %s obsolete";
 const char e_lexobsolete6[]	= "line %d: `{' instead of `in' is obsolete";
-const char e_lexnonstandard[]	= "line %d: `&>file' is nonstandard -- interpreted as `>file 2>&1' for profile input only";
 const char e_lexusebrace[]	= "line %d: use braces to avoid ambiguities with $id[...]";
 const char e_lexusequote[]	= "line %d: %c within ${} should be quoted";
 const char e_lexescape[]	= "line %d: escape %c to avoid ambiguities";
diff --git a/src/cmd/ksh93/data/msg.c b/src/cmd/ksh93/data/msg.c
index d0721a9ba..c3269c6c0 100644
--- a/src/cmd/ksh93/data/msg.c
+++ b/src/cmd/ksh93/data/msg.c
@@ -187,15 +187,6 @@ const char e_suidprofile[]	= "/etc/suid_profile";
 #if SHOPT_SYSRC
 const char e_sysrc[]		= "/etc/ksh.kshrc";
 #endif
-#if SHOPT_BASH
-#if SHOPT_SYSRC
-const char e_bash_sysrc[]	= "/etc/bash.bashrc";
-#endif
-const char e_bash_rc[]		= "$HOME/.bashrc";
-const char e_bash_login[]	= "$HOME/.bash_login";
-const char e_bash_logout[]	= "$HOME/.bash_logout";
-const char e_bash_profile[]	= "$HOME/.bash_profile";
-#endif
 const char e_crondir[]		= "/usr/spool/cron/atjobs";
 const char e_prohibited[]	= "login setuid/setgid shells prohibited";
 #ifdef BUILD_DTKSH
diff --git a/src/cmd/ksh93/data/options.c b/src/cmd/ksh93/data/options.c
index 73617f19d..785a8e81f 100644
--- a/src/cmd/ksh93/data/options.c
+++ b/src/cmd/ksh93/data/options.c
@@ -23,14 +23,6 @@
 #include	"name.h"
 #include	"shtable.h"
 
-#if SHOPT_BASH
-#   define bashopt(a,b)		a,	b|SH_BASHOPT,
-#   define bashextra(a,b)	a,	b|SH_BASHEXTRA,
-#else
-#   define bashopt(a,b)
-#   define bashextra(a,b)
-#endif
-
 /*
  * This is the list of invocation and set options
  * This list must be in in ascii sorted order
@@ -39,83 +31,42 @@
 const Shtable_t shtab_options[] =
 {
 	"allexport",			SH_ALLEXPORT,
-#if SHOPT_BASH
-	"bash",				(SH_BASH|SH_COMMANDLINE),
-#endif
 	"bgnice",			SH_BGNICE,
 	"braceexpand",			SH_BRACEEXPAND,
-	bashopt("cdable_vars",		SH_CDABLE_VARS)
-	bashopt("cdspell",		SH_CDSPELL)
-	bashopt("checkhash",		SH_CHECKHASH)
-	bashopt("checkwinsize",		SH_CHECKWINSIZE)
 	"noclobber",			SH_NOCLOBBER,
-	bashopt("dotglob",		SH_DOTGLOB)
 	"emacs",			SH_EMACS,
 	"errexit",			SH_ERREXIT,
 	"noexec",			SH_NOEXEC,
-	bashopt("execfail",		SH_EXECFAIL)
-	bashopt("expand_aliases",	SH_EXPAND_ALIASES)
-	bashopt("extglob",		SH_EXTGLOB)
 	"noglob",			SH_NOGLOB,
 	"globstar",			SH_GLOBSTARS,
 	"gmacs",			SH_GMACS,
-	bashextra("hashall",		SH_TRACKALL)
-	bashopt("histappend",		SH_HISTAPPEND)
 #if SHOPT_HISTEXPAND
 	"histexpand",			SH_HISTEXPAND,
-#else
-	bashextra("histexpand",		SH_HISTEXPAND)
 #endif
-	bashextra("history",		SH_HISTORY2)
-	bashopt("histreedit",		SH_HISTREEDIT)
-	bashopt("histverify",		SH_HISTVERIFY)
-	bashopt("hostcomplete",		SH_HOSTCOMPLETE)
-	bashopt("huponexit",		SH_HUPONEXIT)
 	"ignoreeof",			SH_IGNOREEOF,
 	"interactive",			SH_INTERACTIVE|SH_COMMANDLINE,
-	bashextra("interactive_comments",	SH_INTERACTIVE_COMM)
 	"keyword",			SH_KEYWORD,
 	"letoctal",			SH_LETOCTAL,
-	bashopt("lithist",		SH_LITHIST)
 	"nolog",			SH_NOLOG,
 	"login_shell",			SH_LOGIN_SHELL|SH_COMMANDLINE,
-	bashopt("mailwarn",		SH_MAILWARN)
 	"markdirs",			SH_MARKDIRS,
 	"monitor",			SH_MONITOR,
 	"multiline",			SH_MULTILINE,
-	bashopt("no_empty_cmd_completion", SH_NOEMPTYCMDCOMPL)
-	bashopt("nocaseglob",		SH_NOCASEGLOB)
 	"notify",			SH_NOTIFY,
-	bashopt("nullglob",		SH_NULLGLOB)
-	bashextra("onecmd",		SH_TFLAG)
 	"pipefail",			SH_PIPEFAIL,
-	bashextra("physical",		SH_PHYSICAL)
-	bashextra("posix",		SH_POSIX)
+	"posix",			SH_POSIX,
 	"privileged",			SH_PRIVILEGED,
-#if SHOPT_BASH
-	"profile",			SH_LOGIN_SHELL|SH_COMMANDLINE,
-#   if SHOPT_PFSH
-	"pfsh",				SH_PFSH|SH_COMMANDLINE,
-#   endif
-#else
-#   if SHOPT_PFSH
+#if SHOPT_PFSH
 	"profile",			SH_PFSH|SH_COMMANDLINE,
-#   endif
 #endif
-	bashopt("progcomp",		SH_PROGCOMP)
-	bashopt("promptvars",		SH_PROMPTVARS)
 	"rc",				SH_RC|SH_COMMANDLINE,
 	"restricted",			SH_RESTRICTED,
-	bashopt("restricted_shell",	SH_RESTRICTED2|SH_COMMANDLINE)
-	bashopt("shift_verbose",	SH_SHIFT_VERBOSE)
 	"showme",			SH_SHOWME,
-	bashopt("sourcepath",		SH_SOURCEPATH)
 	"trackall",			SH_TRACKALL,
 	"nounset",			SH_NOUNSET,
 	"verbose",			SH_VERBOSE,
 	"vi",				SH_VI,
 	"viraw",			SH_VIRAW,
-	bashopt("xpg_echo",		SH_XPG_ECHO)
 	"xtrace",			SH_XTRACE,
 	"",				0
 };
diff --git a/src/cmd/ksh93/include/builtins.h b/src/cmd/ksh93/include/builtins.h
index 76d3a79f9..7962efd81 100644
--- a/src/cmd/ksh93/include/builtins.h
+++ b/src/cmd/ksh93/include/builtins.h
@@ -58,11 +58,6 @@
 #define SYSDOT		(shgd->bltin_cmds+20)	/* . */
 #define SYSSOURCE	(shgd->bltin_cmds+21)	/* source */
 #define SYSRETURN	(shgd->bltin_cmds+22)	/* return */
-#if SHOPT_BASH
-#   define SYSLOCAL	(shgd->bltin_cmds+23)	/* local */
-#else
-#   define SYSLOCAL	0
-#endif
 
 /* entry point for shell special builtins */
 
diff --git a/src/cmd/ksh93/include/defs.h b/src/cmd/ksh93/include/defs.h
index e56a53739..06a021e75 100644
--- a/src/cmd/ksh93/include/defs.h
+++ b/src/cmd/ksh93/include/defs.h
@@ -311,7 +311,6 @@ struct shared
 #define SH_COMPLETE	19	/* set for command completion */
 #define SH_INTESTCMD	20	/* set while test/[ command is being run */
 
-#define SH_BASH			41
 #define SH_BRACEEXPAND		42
 #define SH_POSIX		46
 #define SH_MULTILINE    	47
@@ -319,9 +318,7 @@ struct shared
 #define SH_NOPROFILE		78
 #define SH_NOUSRPROFILE		79
 #define SH_LOGIN_SHELL		67
-#define SH_COMMANDLINE		0x100
-#define SH_BASHEXTRA		0x200
-#define SH_BASHOPT		0x400
+#define SH_COMMANDLINE		0x100	/* flag for invocation-only options ('set -o' cannot change them) */
 
 #define SH_ID			"ksh"	/* ksh id */
 #define SH_STD			"sh"	/* standard sh id */
@@ -330,44 +327,11 @@ struct shared
 
 #define SH_TYPE_SH		001
 #define SH_TYPE_KSH		002
-#define SH_TYPE_BASH		004
+#define SH_TYPE_POSIX		004
 #define SH_TYPE_LOGIN		010
 #define SH_TYPE_PROFILE		020
 #define SH_TYPE_RESTRICTED	040
 
-#if SHOPT_BASH
-#   ifndef SHOPT_HISTEXPAND
-#	define SHOPT_HISTEXPAND	1
-#   endif
-/*
- *  define for all the bash options
- */
-#   define SH_CDABLE_VARS	51
-#   define SH_CDSPELL		52
-#   define SH_CHECKHASH		53
-#   define SH_CHECKWINSIZE	54
-#   define SH_CMDHIST		55
-#   define SH_DOTGLOB		56
-#   define SH_EXECFAIL		57
-#   define SH_EXPAND_ALIASES	58
-#   define SH_EXTGLOB		59
-#   define SH_HOSTCOMPLETE	63
-#   define SH_HUPONEXIT		64
-#   define SH_INTERACTIVE_COMM	65
-#   define SH_LITHIST		66
-#   define SH_MAILWARN		68
-#   define SH_NOEMPTYCMDCOMPL	69
-#   define SH_NOCASEGLOB	70
-#   define SH_NULLGLOB		71
-#   define SH_PHYSICAL		45
-#   define SH_PROGCOMP		72
-#   define SH_PROMPTVARS	73
-#   define SH_RESTRICTED2	74
-#   define SH_SHIFT_VERBOSE	75
-#   define SH_SOURCEPATH	76
-#   define SH_XPG_ECHO		77
-#endif
-
 #if SHOPT_HISTEXPAND
 #   define SH_HISTAPPEND	60
 #   define SH_HISTEXPAND	43
@@ -483,7 +447,6 @@ extern const char	e_dict[];
 #define PRINT_VERBOSE	0x01	/* option on|off list		*/
 #define PRINT_ALL	0x02	/* list unset options too	*/
 #define PRINT_NO_HEADER	0x04	/* omit listing header		*/
-#define PRINT_SHOPT	0x08	/* shopt -s|-u			*/
 #define PRINT_TABLE	0x10	/* table of all options		*/
 
 #ifdef SHOPT_STATS
diff --git a/src/cmd/ksh93/include/io.h b/src/cmd/ksh93/include/io.h
index f82c5ca10..ee7d0cb92 100644
--- a/src/cmd/ksh93/include/io.h
+++ b/src/cmd/ksh93/include/io.h
@@ -114,15 +114,6 @@ extern const char	e_sysprofile[];
 #if SHOPT_SYSRC
 extern const char	e_sysrc[];
 #endif
-#if SHOPT_BASH
-#if SHOPT_SYSRC
-extern const char	e_bash_sysrc[];
-#endif
-extern const char	e_bash_rc[];
-extern const char	e_bash_login[];
-extern const char	e_bash_logout[];
-extern const char	e_bash_profile[];
-#endif
 extern const char	e_stdprompt[];
 extern const char	e_supprompt[];
 extern const char	e_ambiguous[];
diff --git a/src/cmd/ksh93/include/shlex.h b/src/cmd/ksh93/include/shlex.h
index bc38ccb3d..1574796f2 100644
--- a/src/cmd/ksh93/include/shlex.h
+++ b/src/cmd/ksh93/include/shlex.h
@@ -41,7 +41,6 @@ typedef struct  _shlex_
 	int		lastline;	/* last line number */
 	int		lasttok;	/* previous token number */
 	int		digits;		/* numerical value with word token */
-	int		nonstandard;	/* nonstandard construct in profile */
 	char		aliasok;	/* on when alias is legal */
 	char		assignok;	/* on when name=value is legal */
 	char		inexec;		/* on when processing exec */
diff --git a/src/cmd/ksh93/include/version.h b/src/cmd/ksh93/include/version.h
index 9d19bb453..8d37c84b0 100644
--- a/src/cmd/ksh93/include/version.h
+++ b/src/cmd/ksh93/include/version.h
@@ -17,4 +17,4 @@
 *                  David Korn <dgk@research.att.com>                   *
 *                                                                      *
 ***********************************************************************/
-#define SH_RELEASE	"93u+m 2020-08-19"
+#define SH_RELEASE	"93u+m 2020-09-01"
diff --git a/src/cmd/ksh93/sh.1 b/src/cmd/ksh93/sh.1
index a65b7dc4c..e8648b3fa 100644
--- a/src/cmd/ksh93/sh.1
+++ b/src/cmd/ksh93/sh.1
@@ -3409,7 +3409,7 @@ successfully rename it to
 otherwise, delete the temporary file.
 .BI >; word
 cannot be used with the
-.IR exec (2).
+.IR exec
 built-in.
 .TP
 .BI >> word
@@ -3433,7 +3433,7 @@ except that if the command completes successfully,
 is truncated to the offset at command completion.
 .BI <>; word
 cannot be used with the
-.IR exec (2).
+.IR exec
 built-in.
 .TP
 \f3<<\fP\*(OK\f3\-\fP\*(CK\f2word\fP
@@ -3492,20 +3492,26 @@ The standard input is duplicated from file descriptor
 .I digit
 (see
 .IR dup (2)).
-Similarly for the standard output using
-\f3>&\^\f2digit\fR.
+.TP
+.BI >& digit
+The standard output is duplicated from file descriptor
+.IR digit .
 .TP
 .BI <& digit \-
 The file descriptor given by
 .I digit
 is moved to standard input.
-Similarly for the standard output using
-\f3>&\^\f2digit\f3\-\fR.
+.TP
+.BI >& digit \-
+The file descriptor given by
+.I digit
+is moved to standard output.
 .TP
 .B <&\-
 The standard input is closed.
-Similarly for the standard output using
-.BR >&\- .
+.TP
+.B >&\-
+The standard output is closed.
 .TP
 .B <&p
 The input from the co-process is moved to standard input.
@@ -3593,6 +3599,11 @@ for reading and store
 the file descriptor number in variable
 .BR n .
 .PP
+A special shorthand redirection operator \fB&>\fR\fIword\fR is available; it
+is equivalent to \fB>\fR\fIword\fR\fB 2>&1\fR. It cannot be preceded by any
+digit or variable name. This shorthand is disabled if the \fIposix\fR shell
+option is active.
+.PP
 The order in which redirections are specified is significant.
 The shell evaluates each redirection in terms of the
 .RI ( "file descriptor" ", " file )
@@ -7020,6 +7031,11 @@ of the pipeline have completed, and the return value
 will be the value of the last non-zero command
 to fail or zero if no command has failed.
 .TP 8
+.B posix
+Enable POSIX standard compatibility mode. This option
+is on by default if ksh is invoked as \fBsh\fR. It
+disables the \fB&>\fR redirection shorthand.
+.TP 8
 .B privileged
 Same as
 .BR \-p .
diff --git a/src/cmd/ksh93/sh/args.c b/src/cmd/ksh93/sh/args.c
index 4c5c6b060..b4fe735a8 100644
--- a/src/cmd/ksh93/sh/args.c
+++ b/src/cmd/ksh93/sh/args.c
@@ -42,11 +42,6 @@
 #else
 #   define PFSHOPT
 #endif
-#if SHOPT_BASH
-#   define BASHOPT	"\374"
-#else
-#   define BASHOPT
-#endif
 #if SHOPT_HISTEXPAND
 #   define HFLAG        "H"
 #else
@@ -59,15 +54,13 @@
 static	char		*null;
 
 /* The following order is determined by sh_optset */
-static  const char optksh[] =  PFSHOPT BASHOPT "DircabefhkmnpstuvxBCGEl" HFLAG;
+static  const char optksh[] =  PFSHOPT "\374" "DircabefhkmnpstuvxBCGEl" HFLAG;
 static const int flagval[]  =
 {
 #if SHOPT_PFSH
 	SH_PFSH,
 #endif
-#if SHOPT_BASH
 	SH_POSIX,
-#endif
 	SH_DICTIONARY, SH_INTERACTIVE, SH_RESTRICTED, SH_CFLAG,
 	SH_ALLEXPORT, SH_NOTIFY, SH_ERREXIT, SH_NOGLOB, SH_TRACKALL,
 	SH_KEYWORD, SH_MONITOR, SH_NOEXEC, SH_PRIVILEGED, SH_SFLAG, SH_TFLAG,
@@ -108,22 +101,6 @@ void *sh_argopen(Shell_t *shp)
 
 static int infof(Opt_t* op, Sfio_t* sp, const char* s, Optdisc_t* dp)
 {
-#if SHOPT_BASH
-	extern const char sh_bash1[], sh_bash2[];
-	if(strcmp(s,"bash1")==0) 
-	{
-		if(sh_isoption(SH_BASH))
-			sfputr(sp,sh_bash1,-1);
-	}
-	else if(strcmp(s,"bash2")==0)
-	{
-		if(sh_isoption(SH_BASH))
-			sfputr(sp,sh_bash2,-1);
-	}
-	else if(*s==':' && sh_isoption(SH_BASH))
-		sfputr(sp,s,-1);
-	else
-#endif
 	if(*s!=':')
 		sfputr(sp,sh_set,-1);
 	return(1);
@@ -168,31 +145,17 @@ int sh_argopts(int argc,register char *argv[], void *context)
 			if(f)
 				nv_unset(np);
 			continue;
-#if SHOPT_BASH
-		    case 'O':	/* shopt options, only in bash mode */
-			if(!sh_isoption(SH_BASH))
-				errormsg(SH_DICT,ERROR_exit(1), e_option, opt_info.name);
-#endif
 		    case 'o':	/* set options */
 		    byname:
 			if(!opt_info.arg||!*opt_info.arg||*opt_info.arg=='-')
 			{
 				action = PRINT;
-				/* print style: -O => shopt options
-				 * bash => print unset options also, no heading
-				 */
 				verbose = (f?PRINT_VERBOSE:PRINT_NO_HEADER)|
-					  (n=='O'?PRINT_SHOPT:0)|
-					  (sh_isoption(SH_BASH)?PRINT_ALL|PRINT_NO_HEADER:0)|
 					  ((opt_info.arg&&(!*opt_info.arg||*opt_info.arg=='-'))?(PRINT_TABLE|PRINT_NO_HEADER):0);
 				continue;
 			}
 			o = sh_lookopt(opt_info.arg,&f);
-			if(o<=0
-				|| (!sh_isoption(SH_BASH) && (o&SH_BASHEXTRA))
-				|| ((!sh_isoption(SH_BASH) || n=='o') && (o&SH_BASHOPT))
-
-				|| (setflag && (o&SH_COMMANDLINE)))
+			if(o<=0 || (setflag && (o&SH_COMMANDLINE)))
 			{
 				errormsg(SH_DICT,2, e_option, opt_info.arg);
 				error_info.errors++;
@@ -201,33 +164,6 @@ int sh_argopts(int argc,register char *argv[], void *context)
 			if(sh_isoption(SH_RESTRICTED) && !f && o==SH_RESTRICTED)
 				errormsg(SH_DICT,ERROR_exit(1), e_restricted, opt_info.arg);
 			break;
-#if SHOPT_BASH
-		    case -1:	/* --rcfile */
-			ap->sh->gd->rcfile = opt_info.arg;
-			continue;
-		    case -2:	/* --noediting */
-			if (!f)
-			{
-				off_option(&newflags,SH_VI);
-				off_option(&newflags,SH_EMACS);
-				off_option(&newflags,SH_GMACS);
-			}
-			continue;
-		    case -3:	/* --profile */
-			n = 'l';
-			goto skip;
-		    case -4:	/* --posix */
-			/* mask lower 8 bits to find char in optksh string */
-			n&=0xff;
-			goto skip;
-		    case -5:	/* --version */
-			sfputr(sfstdout, "ksh bash emulation, version ",-1);
-			np = nv_open("BASH_VERSION",ap->sh->var_tree,0);
-			sfputr(sfstdout, nv_getval(np),-1);
-			np = nv_open("MACHTYPE",ap->sh->var_tree,0);
-			sfprintf(sfstdout, " (%s)\n", nv_getval(np));
-			sh_exit(0);
-#endif
 		    case -6:	/* --default */
 			{
 				register const Shtable_t *tp;
@@ -408,35 +344,6 @@ void sh_applyopts(Shell_t* shp,Shopt_t newflags)
 			(shp->gd->userid==shp->gd->euserid && shp->gd->groupid==shp->gd->egroupid))
 				off_option(&newflags,SH_PRIVILEGED);
 	}
-#if SHOPT_BASH
-	on_option(&newflags,SH_CMDHIST);
-	on_option(&newflags,SH_CHECKHASH);
-	on_option(&newflags,SH_EXECFAIL);
-	on_option(&newflags,SH_EXPAND_ALIASES);
-	on_option(&newflags,SH_HISTAPPEND);
-	on_option(&newflags,SH_INTERACTIVE_COMM);
-	on_option(&newflags,SH_LITHIST);
-	on_option(&newflags,SH_NOEMPTYCMDCOMPL);
-
-	if(!is_option(&newflags,SH_XPG_ECHO) && sh_isoption(SH_XPG_ECHO))
-		astconf("UNIVERSE", 0, "ucb");
-	if(is_option(&newflags,SH_XPG_ECHO) && !sh_isoption(SH_XPG_ECHO))
-		astconf("UNIVERSE", 0, "att");
-	if(!is_option(&newflags,SH_PHYSICAL) && sh_isoption(SH_PHYSICAL))
-		astconf("PATH_RESOLVE", 0, "metaphysical");
-	if(is_option(&newflags,SH_PHYSICAL) && !sh_isoption(SH_PHYSICAL))
-		astconf("PATH_RESOLVE", 0, "physical");
-	if(is_option(&newflags,SH_HISTORY2) && !sh_isoption(SH_HISTORY2))
-	{
-		sh_onstate(SH_HISTORY);
-                sh_onoption(SH_HISTORY);
-	}
-	if(!is_option(&newflags,SH_HISTORY2) && sh_isoption(SH_HISTORY2))
-	{
-		sh_offstate(SH_HISTORY);
-		sh_offoption(SH_HISTORY);
-	}
-#endif
 	shp->options = newflags;
 }
 
@@ -647,23 +554,11 @@ void sh_printopts(Shopt_t oflags,register int mode, Shopt_t *mask)
 	on_option(&oflags,SH_VIRAW);
 #endif
 	if(!(mode&(PRINT_ALL|PRINT_VERBOSE))) /* only print set options */
-	{
-		if(mode&PRINT_SHOPT)
-			sfwrite(sfstdout,"shopt -s",3);
-		else
-			sfwrite(sfstdout,"set --default",13);
-	}
+		sfwrite(sfstdout,"set --default",13);
 	for(tp=shtab_options; value=tp->sh_number; tp++)
 	{
 		if(mask && !is_option(mask,value&0xff))
 			continue;
-		if(sh_isoption(SH_BASH))
-		{
-			if (!(mode&PRINT_SHOPT) != !(value&SH_BASHOPT))
-				continue;
-		}
-		else if (value&(SH_BASHEXTRA|SH_BASHOPT))
-			continue;
 		on = !!is_option(&oflags,value);
 		name = tp->sh_name;
 		if(name[0] == 'n' && name[1] == 'o' && name[2] != 't')
@@ -678,18 +573,9 @@ void sh_printopts(Shopt_t oflags,register int mode, Shopt_t *mask)
 			sfputr(sfstdout,on ? sh_translate(e_on) : sh_translate(e_off),'\n');
 		}
 		else if(mode&PRINT_ALL) /* print unset options also */
-		{
-			if(mode&PRINT_SHOPT)
-				sfprintf(sfstdout, "shopt -%c %s\n",
-					on?'s':'u',
-					name);
-			else
-				sfprintf(sfstdout, "set %co %s\n",
-					on?'-':'+',
-					name);
-		}
+			sfprintf(sfstdout, "set %co %s\n", on?'-':'+', name);
 		else if(!(value&SH_COMMANDLINE) && is_option(&oflags,value&0xff))
-			sfprintf(sfstdout," %s%s%s",(mode&PRINT_SHOPT)?"":"--",on?"":"no",name);
+			sfprintf(sfstdout, " %s%s%s","--", on?"":"no", name);
 	}
 	if(!(mode&(PRINT_VERBOSE|PRINT_ALL)))
 		sfputc(sfstdout,'\n');
diff --git a/src/cmd/ksh93/sh/bash.c b/src/cmd/ksh93/sh/bash.c
deleted file mode 100644
index 8e960a765..000000000
--- a/src/cmd/ksh93/sh/bash.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/***********************************************************************
-*                                                                      *
-*               This software is part of the ast package               *
-*          Copyright (c) 1982-2011 AT&T Intellectual Property          *
-*                      and is licensed under the                       *
-*                 Eclipse Public License, Version 1.0                  *
-*                    by AT&T Intellectual Property                     *
-*                                                                      *
-*                A copy of the License is available at                 *
-*          http://www.eclipse.org/org/documents/epl-v10.html           *
-*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
-*                                                                      *
-*              Information and Software Systems Research               *
-*                            AT&T Research                             *
-*                           Florham Park NJ                            *
-*                                                                      *
-*                  David Korn <dgk@research.att.com>                   *
-*                                                                      *
-***********************************************************************/
-/*
- * bash specific extensions
- * originally provided by Karsten Fleischer
- */
-
-#include "defs.h"
-#include "path.h"
-#include "io.h"
-#include "builtins.h"
-#include "name.h"
-
-#ifndef BASH_MAJOR
-#   define BASH_MAJOR	"1"
-#   define BASH_MINOR	"0"
-#   define BASH_PATCH	"0"
-#   define BASH_BUILD	"0"
-#   define BASH_RELEASE	"experimental"
-#endif 
-#define BASH_VERSION	BASH_MAJOR "." BASH_MINOR "." BASH_PATCH "(" BASH_BUILD ")-" BASH_RELEASE 
-
-
-extern const char	bash_pre_rc[];
-
-static char *login_files[4];
-
-const char sh_bash1[] =
-	"[B?Enable brace group expansion. This option is only available in bash "
-	"compatibility mode. In ksh mode, brace group expansion is always on.]"
-	"[P?Do not follow symbolic links, use physical directory structure "
-	"instead. Only available in bash compatibility mode.]";
-const char sh_bash2[] =
-"[O]:?[shopt_option?\ashopt_option\a is one of the shell options accepted by "
-	"the \bshopt\b builtin. If \ashopt_option\a is present, \b-O\b sets "
-	"the value of that option; \b+O\b unsets it. If \ashopt_option\a is "
-	"not supplied, the names and values of the shell options accepted by "
-	"\bshopt\b are printed on the standard output. If the invocation "
-	"option is \b+O\b, the output is displayed in a format that may be "
-	"reused as input. Only available if invoked as \bbash\b.]"
-"[01:init-file|rcfile]:[file?Execute commands from \afile\a instead of the "
-	"standard personal initialization file ~/.bashrc if the shell is "
-	"interactive. Only available if invoked as \bbash\b.]"
-"[02:editing?For option compatibility with \bbash\b only. Ignored.]"
-"[03:profile?Read either the system-wide startup file or any of the "
-	"personal initialization files. On by default for interactive "
-	"shells. Only available if invoked as \bbash\b.]"
-"[04:posix?If invoked as \bbash\b, turn on POSIX compatibility. \bBash\b in "
-	"POSIX mode is not the same as \bksh\b.]"
-"[05:version?Print version number and exit.]";
-
-const char sh_optshopt[] =
-"+[-1c?\n@(#)$Id: shopt (AT&T Research) 2003-02-13 $\n]"
-"[-author?Karsten Fleischer <K.Fleischer@omnium.de>]"
-USAGE_LICENSE
-"[+NAME?shopt - set/unset variables controlling optional shell behavior]"
-"[+DESCRIPTION?\bshopt\b sets or unsets variables controlling optional shell "
-	"behavior. With no options, or with the \b-p\b option, a list of all "
-	"settable options is displayed, with an indication of whether or not "
-	"each is set.]"
-"[p?Causes output to be displayed in a form that may be reused as input.]"
-"[s?Set each \aoptname\a.]"
-"[u?Unset each \aoptname\a.]"
-"[q?Suppress output (quiet mode). The return status indicates whether the "
-	"\aoptname\a is set or unset. If multiple \aoptname\a arguments are "
-	"given with \b-q\b, the return status is zero if all \aoptname\as are "
-	"enabled; non-zero otherwise.]"
-"[o?Restricts the values of \aoptname\a to be those defined for the \b-o\b "
-	"option to the set builtin.]"
-"[+?If either \b-s\b or \b-u\b is used with no \aoptname\a arguments, the "
-	"display is limited to those options which are set or unset.]"
-"[+?\bshopt\b supports all bash options. Some settings do not have any effect "
-	"or are are always on and cannot be changed.]"
-"[+?The value of \aoptname\a must be one of the following:]{"
-		"[+cdable_vars?If set, arguments to the \bcd\b command are "
-			"assumed to be names of variables whose values are to "
-			"be used if the usual \bcd\b proceeding fails.]"
-		"[+cdspell?Currently ignored.]"
-		"[+checkhash?Always on.]"
-		"[+checkwinsize?Currently ignored.]"
-		"[+cmdhist?Always on.]"
-		"[+dotglob?If set, include filenames beginning with a \b.\b "
-			"in the results of pathname expansion.]"
-		"[+execfail?Always on.]"
-		"[+expand_aliases?Always on.]"
-		"[+extglob?Enable extended pattern matching features.]"
-		"[+histappend?Always on.]"
-		"[+histreedit?If set and an edit mode is selected, the user "
-			"is given the opportunity to re-edit a failed history "
-			"substitution.]"
-		"[+histverify?If set and an edit mode is selected, the result "
-			"of a history substitution will not be executed "
-			"immediately but be placed in the edit buffer for "
-			"further modifications.]"
-		"[+hostcomplete?Currently ignored.]"
-		"[+huponexit?Currently ignored.]"
-		"[+interactive_comments?Always on.]"
-		"[+lithist?Always on.]"
-		"[+login_shell?This option is set if the shell is started as "
-			"a login shell. The value cannot be changed.]"
-		"[+mailwarn?Currently ignored.]"
-		"[+no_empty_cmd_completion?Always on.]"
-		"[+nocaseglob?Match filenames in a case-insensitive fashion "
-			"when performing filename expansion.]"
-		"[+nullglob?Allows filename patterns which match no files to "
-			"expand to a null string, rather than themselves.]"
-		"[+progcomp?Currently ignored.]"
-		"[+promptvars?Currently ignored.]"
-		"[+restricted_shell?This option is set if the shell is started "
-			"as a restricted shell. The value cannot be changed. "
-			"It is not reset during execution of startup files, "
-			"allowing the startup files to determine whether the "
-			"shell is restricted.]"
-		"[+shift_verbose?Currently ignored.]"
-		"[+sourcepath?If set, the \b.\b builtin uses the value of PATH "
-			"to find the directory containing the file supplied "
-			"as an argument.]"
-		"[+xpg_echo?If set, the \becho\b and \bprint\b builtins "
-			"expand backslash-escape sequences.]"
-"}"
-"\n"
-"\n[optname ...]\n"
-"\n"
-"[+EXIT STATUS?]{"
-	"[+?The return status when listing options is zero if all \aoptnames\a "
-	"are enabled, non-zero otherwise. When setting or unsetting options, "
-	"the return status is zero unless an \aoptname\a is not a valid shell "
-	"option.]"
-"}"
-
-"[+SEE ALSO?\bset\b(1)]"
-;
-
-/* GLOBIGNORE discipline. Turn on SH_DOTGLOB on set, turn off on unset. */
-
-static void put_globignore(register Namval_t* np, const char *val, int flags, Namfun_t *fp)
-{
-	if(val)
-		sh_onoption(SH_DOTGLOB);
-	else
-		sh_offoption(SH_DOTGLOB);
-
-	nv_putv(np,val,flags,fp);
-}
-
-const Namdisc_t SH_GLOBIGNORE_disc  = { sizeof(Namfun_t), put_globignore };
-
-/* FUNCNAME discipline */
-
-struct	funcname
-{
-	Namfun_t	hdr;
-};
-
-static void put_funcname(register Namval_t* np,const char *val,int flags,Namfun_t *fp)
-{
-	/* bash silently returns with an error when FUNCNAME is set,
-	   unsetting FUNCNAME is allowed */
-	if(val && !(flags&NV_RDONLY))
-		error_info.exit(1);
-
-	nv_putv(np,val,flags,fp);
-}
-
-const Namdisc_t SH_FUNCNAME_disc  = { sizeof(struct funcname), put_funcname };
-
-#define	SET_SET		1
-#define	SET_UNSET	2
-#define	SET_NOARGS	4
-
-/* shopt builtin */
-
-int     b_shopt(int argc,register char *argv[],void *extra)
-{
-        Shell_t *shp = (Shell_t*)extra;
-	int n, f, ret=0;
-	Shopt_t newflags=shp->options, opt;
-	int verbose=PRINT_SHOPT|PRINT_ALL|PRINT_NO_HEADER|PRINT_VERBOSE;
-	int setflag=0, quietflag=0, oflag=0;
-	memset(&opt,0,sizeof(opt));
-#if SHOPT_RAWONLY
-	on_option(&newflags,SH_VIRAW);
-#endif
-	while((n = optget(argv,sh_optshopt)))
-	{
-		switch(n)
-		{
-		case 'p':
-			verbose&=~PRINT_VERBOSE;
-			break;
-		case 's':
-		case 'u':
-			setflag|=n=='s'?SET_SET:SET_UNSET;
-			if(setflag==(SET_SET|SET_UNSET))
-			{
-				errormsg(SH_DICT,ERROR_ERROR,"cannot set and unset options simultaneously");
-				error_info.errors++;
-			}
-			break;
-		case 'q':
-			quietflag=1;
-			break;
-		case 'o':
-			oflag=1;
-			verbose&=~PRINT_SHOPT;
-			break;
-		case ':':
-			errormsg(SH_DICT,2, "%s", opt_info.arg);
-			continue;
-		case '?':
-			errormsg(SH_DICT,ERROR_usage(0), "%s", opt_info.arg);
-			return(-1);
-		}
-	}
-	if(error_info.errors)
-		errormsg(SH_DICT,ERROR_usage(2),"%s",optusage(NIL(char*)));
-	argc -= opt_info.index;
-	if(argc==0)
-	{
-		/* no args, -s => mask=current options, -u mask=~(current options)
-		   else mask=all bits */
-		if(setflag&SET_SET)
-			opt=newflags;
-		else if(setflag&SET_UNSET)
-			for(n=0;n<4;n++)
-				opt.v[n]=~newflags.v[n];
-		else
-			memset(&opt,0xff,sizeof(opt));
-		setflag=SET_NOARGS;
-	}
-	while(argc>0)
-	{
-		f=1;
-		n=sh_lookopt(argv[opt_info.index],&f);
-		if(n<=0||(setflag 
-			&& (is_option(&opt,SH_INTERACTIVE)
-			    || is_option(&opt,SH_RESTRICTED)
-			    || is_option(&opt,SH_RESTRICTED2)
-			    || is_option(&opt,SH_BASH)
-			    || is_option(&opt,SH_LOGIN_SHELL)))
-			||(oflag&&(n&SH_BASHOPT)))
-		{
-			errormsg(SH_DICT,ERROR_ERROR, e_option, argv[opt_info.index]);
-			error_info.errors++;
-			ret=1;
-		}
-		else if(f)
-			on_option(&opt,n&0xff);
-		else
-			off_option(&opt,n&0xff);
-		opt_info.index++;
-		argc--;
-	}
-	if(setflag&(SET_SET|SET_UNSET))
-	{
-		if(setflag&SET_SET)
-		{
-			if(sh_isoption(SH_INTERACTIVE))
-				off_option(&opt,SH_NOEXEC);
-			if(is_option(&opt,SH_VI)||is_option(&opt,SH_EMACS)||is_option(&opt,SH_GMACS))
-			{
-				off_option(&newflags,SH_VI);
-				off_option(&newflags,SH_EMACS);
-				off_option(&newflags,SH_GMACS);
-			}
-			for(n=0;n<4;n++)
-				newflags.v[n] |= opt.v[n];
-		}
-		else if(setflag&SET_UNSET)
-			for(n=0;n<4;n++)
-				newflags.v[n] &= ~opt.v[n];
-		sh_applyopts(shp,newflags);
-		shp->options = newflags;
-		if(is_option(&newflags,SH_XTRACE))
-			sh_trace(shp,argv,1);
-	}
-	else if(!(setflag&SET_NOARGS)) /* no -s,-u but args, ret=0 if opt&mask==mask */
-	{
-		for(n=0;n<4;n++)
-			ret+=((newflags.v[n]&opt.v[n])!=opt.v[n]);
-	}
-	if(!quietflag&&!(setflag&(SET_SET|SET_UNSET)))
-		sh_printopts(newflags,verbose,&opt);
-	return(ret);
-}
-
-/* mode = 0: init, called two times
-        before parsing shell args with SH_PREINIT state turned on
-	second time after sh_init() is through and with SH_PREINIT state turned off
-   mode > 1: re-init
-   mode < 0: shutdown
-*/
-
-void bash_init(Shell_t *shp,int mode)
-{
-	Sfio_t		*iop;
-	Namval_t	*np;
-	int		n=0,xtrace,verbose;
-	if(mode>0)
-		goto reinit;
-	if(mode < 0)
-	{
-		/* termination code */
-		if(sh_isoption(SH_LOGIN_SHELL) && !sh_isoption(SH_POSIX))
-			sh_source(shp, NiL, sh_mactry(shp,(char*)e_bash_logout));
-		return;	
-	}
-
-	if(sh_isstate(SH_PREINIT))
-	{	/* pre-init stage */
-		if(sh_isoption(SH_RESTRICTED))
-			sh_onoption(SH_RESTRICTED2);
-		sh_onoption(SH_HISTORY2);
-		sh_onoption(SH_INTERACTIVE_COMM);
-		sh_onoption(SH_SOURCEPATH);
-		sh_onoption(SH_HISTAPPEND);
-		sh_onoption(SH_CMDHIST);
-		sh_onoption(SH_LITHIST);
-		sh_onoption(SH_NOEMPTYCMDCOMPL);
-		if(shp->login_sh==2)
-			sh_onoption(SH_LOGIN_SHELL);
-		if(strcmp(astconf("CONFORMANCE",0,0),"standard")==0)
-			sh_onoption(SH_POSIX);
-		if(strcmp(astconf("UNIVERSE",0,0),"att")==0)
-			sh_onoption(SH_XPG_ECHO);
-		else
-			sh_offoption(SH_XPG_ECHO);
-		if(strcmp(astconf("PATH_RESOLVE",0,0),"physical")==0)
-			sh_onoption(SH_PHYSICAL);
-		else
-			sh_offoption(SH_PHYSICAL);
-
-		/* add builtins */
-		sh_addbuiltin("shopt", b_shopt, &sh);
-
-		/* set up some variables needed for --version
-		 * needs to go here because --version option is parsed before the init script.
-		 */
-		if(np=nv_open("HOSTTYPE",shp->var_tree,0))
-			nv_putval(np, BASH_HOSTTYPE, NV_NOFREE);
-		if(np=nv_open("MACHTYPE",shp->var_tree,0))
-			nv_putval(np, BASH_MACHTYPE, NV_NOFREE);
-		if(np=nv_open("BASH_VERSION",shp->var_tree,0))
-			nv_putval(np, BASH_VERSION, NV_NOFREE);
-		if(np=nv_open("BASH_VERSINFO",shp->var_tree,0))
-		{
-			char *argv[7];
-			argv[0] = BASH_MAJOR;
-			argv[1] = BASH_MINOR;
-			argv[2] = BASH_PATCH;
-			argv[3] = BASH_BUILD;
-			argv[4] = BASH_RELEASE;
-			argv[5] = BASH_MACHTYPE;
-			argv[6] = 0;
-			nv_setvec(np, 0, 6, argv);
-			nv_onattr(np,NV_RDONLY);
-		}
-		return;
-	}
-
-	/* rest of init stage */
-
-	/* restrict BASH_ENV */
-	if(np=nv_open("BASH_ENV",shp->var_tree,0))
-	{
-		const Namdisc_t *dp = nv_discfun(NV_DCRESTRICT);
-		Namfun_t *fp = calloc(dp->dsize,1);
-		fp->disc = dp;
-		nv_disc(np, fp, 0);
-	}
-
-	/* open GLOBIGNORE node */
-	if(np=nv_open("GLOBIGNORE",shp->var_tree,0))
-	{
-		const Namdisc_t *dp = &SH_GLOBIGNORE_disc;
-		Namfun_t *fp = calloc(dp->dsize,1);
-		fp->disc = dp;
-		nv_disc(np, fp, 0);
-	}
-
-	/* set startup files */
-	n=0;
-	if(sh_isoption(SH_LOGIN_SHELL))
-	{
-		if(!sh_isoption(SH_POSIX))
-		{
-			login_files[n++] = (char*)e_bash_profile;
-			login_files[n++] = (char*)e_bash_login;
-		}
-		login_files[n++] = (char*)e_profile;
-	}
-	shp->login_files = login_files;
-reinit:
-	xtrace = sh_isoption(SH_XTRACE);
-	sh_offoption(SH_XTRACE);
-	verbose = sh_isoption(SH_VERBOSE);
-	sh_offoption(SH_VERBOSE);
-	if(np = nv_open("SHELLOPTS", shp->var_tree, NV_NOADD))
-		nv_offattr(np,NV_RDONLY);
-	iop = sfopen(NULL, bash_pre_rc, "s");
-	sh_eval(iop,0);
-	if(xtrace)
-		sh_offoption(SH_XTRACE);
-	if(verbose)
-		sh_offoption(SH_VERBOSE);
-}
diff --git a/src/cmd/ksh93/sh/expand.c b/src/cmd/ksh93/sh/expand.c
index 40c3dd19e..bfe33cf80 100644
--- a/src/cmd/ksh93/sh/expand.c
+++ b/src/cmd/ksh93/sh/expand.c
@@ -96,10 +96,6 @@ int path_expand(Shell_t *shp,const char *pattern, struct argnod **arghead)
 	register struct argnod *ap;
 	register glob_t *gp= &gdata;
 	register int flags,extra=0;
-#if SHOPT_BASH
-	register int off;
-	register char *sp, *cp, *cp2;
-#endif
 	sh_stats(STAT_GLOBS);
 	memset(gp,0,sizeof(gdata));
 	flags = GLOB_GROUP|GLOB_AUGMENTED|GLOB_NOCHECK|GLOB_NOSORT|GLOB_STACK|GLOB_LIST|GLOB_DISC;
@@ -107,16 +103,6 @@ int path_expand(Shell_t *shp,const char *pattern, struct argnod **arghead)
 		flags |= GLOB_MARK;
 	if(sh_isoption(SH_GLOBSTARS))
 		flags |= GLOB_STARSTAR;
-#if SHOPT_BASH
-#if 0
-	if(sh_isoption(SH_BASH) && !sh_isoption(SH_EXTGLOB))
-		flags &= ~GLOB_AUGMENTED;
-#endif
-	if(sh_isoption(SH_NULLGLOB))
-		flags &= ~GLOB_NOCHECK;
-	if(sh_isoption(SH_NOCASEGLOB))
-		flags |= GLOB_ICASE;
-#endif
 	if(sh_isstate(SH_COMPLETE))
 	{
 #if KSHELL
@@ -129,62 +115,6 @@ int path_expand(Shell_t *shp,const char *pattern, struct argnod **arghead)
 		flags |= GLOB_COMPLETE;
 		flags &= ~GLOB_NOCHECK;
 	}
-#if SHOPT_BASH
-	if(off = staktell())
-		sp = stakfreeze(0);
-	if(sh_isoption(SH_BASH))
-	{
-		/*
-		 * For bash, FIGNORE is a colon separated list of suffixes to
-		 * ignore when doing filename/command completion.
-		 * GLOBIGNORE is similar to ksh FIGNORE, but colon separated
-		 * instead of being an augmented shell pattern.
-		 * Generate shell patterns out of those here.
-		 */
-		if(sh_isstate(SH_FCOMPLETE))
-			cp=nv_getval(sh_scoped(shp,FIGNORENOD));
-		else
-		{
-			static Namval_t *GLOBIGNORENOD;
-			if(!GLOBIGNORENOD)
-				GLOBIGNORENOD = nv_open("GLOBIGNORE",shp->var_tree,0);
-			cp=nv_getval(sh_scoped(shp,GLOBIGNORENOD));
-		}
-		if(cp)
-		{
-			flags |= GLOB_AUGMENTED;
-			stakputs("@(");
-			if(!sh_isstate(SH_FCOMPLETE))
-			{
-				stakputs(cp);
-				for(cp=stakptr(off); *cp; cp++)
-					if(*cp == ':')
-						*cp='|';
-			}
-			else
-			{
-				cp2 = strtok(cp, ":");
-				if(!cp2)
-					cp2=cp;
-				do
-				{
-					stakputc('*');
-					stakputs(cp2);
-					if(cp2 = strtok(NULL, ":"))
-					{
-						*(cp2-1)=':';
-						stakputc('|');
-					}
-				} while(cp2);
-			}
-			stakputc(')');
-			gp->gl_fignore = stakfreeze(1);
-		}
-		else if(!sh_isstate(SH_FCOMPLETE) && sh_isoption(SH_DOTGLOB))
-			gp->gl_fignore = "";
-	}
-	else
-#endif
 	gp->gl_fignore = nv_getval(sh_scoped(shp,FIGNORENOD));
 	if(suflen)
 		gp->gl_suffix = sufstr;
@@ -193,12 +123,6 @@ int path_expand(Shell_t *shp,const char *pattern, struct argnod **arghead)
 	if(memcmp(pattern,"~(N",3)==0)
 		flags &= ~GLOB_NOCHECK;
 	glob(pattern, flags, 0, gp);
-#if SHOPT_BASH
-	if(off)
-		stakset(sp,off);
-	else
-		stakseek(0);
-#endif
 	sh_sigcheck(shp);
 	for(ap= (struct argnod*)gp->gl_list; ap; ap = ap->argnxt.ap)
 	{
diff --git a/src/cmd/ksh93/sh/init.c b/src/cmd/ksh93/sh/init.c
index 6f7759596..a73d176c0 100644
--- a/src/cmd/ksh93/sh/init.c
+++ b/src/cmd/ksh93/sh/init.c
@@ -87,10 +87,6 @@ char e_version[]	= "\n@(#)$Id: Version "
 #define ATTRS		1
 			"A"
 #endif
-#if SHOPT_BASH
-#define ATTRS		1
-			"B"
-#endif
 #if SHOPT_BGX
 #define ATTRS		1
 			"J"
@@ -116,10 +112,6 @@ char e_version[]	= "\n@(#)$Id: Version "
 #endif
 			SH_RELEASE " $\0\n";
 
-#if SHOPT_BASH
-    extern void bash_init(Shell_t*,int);
-#endif
-
 #define RANDMASK	0x7fff
 
 #ifndef ARG_MAX
@@ -1103,7 +1095,7 @@ int sh_type(register const char *path)
 	}
 	for (;;)
 	{
-		if (!(t & (SH_TYPE_KSH|SH_TYPE_BASH)))
+		if (!(t & SH_TYPE_KSH))
 		{
 			if (*s == 'k')
 			{
@@ -1111,14 +1103,6 @@ int sh_type(register const char *path)
 				t |= SH_TYPE_KSH;
 				continue;
 			}
-#if SHOPT_BASH
-			if (*s == 'b' && *(s+1) == 'a')
-			{
-				s += 2;
-				t |= SH_TYPE_BASH;
-				continue;
-			}
-#endif
 		}
 		if (!(t & (SH_TYPE_PROFILE|SH_TYPE_RESTRICTED)))
 		{
@@ -1143,6 +1127,8 @@ int sh_type(register const char *path)
 	{
 		s++;
 		t |= SH_TYPE_SH;
+		if (!(t & SH_TYPE_KSH))
+			t |= SH_TYPE_POSIX;
 		if ((t & SH_TYPE_KSH) && *s == '9' && *(s+1) == '3')
 			s += 2;
 #if _WINIX
@@ -1152,7 +1138,7 @@ int sh_type(register const char *path)
 		if (!isalnum(*s))
 			return t;
 	}
-	return t & ~(SH_TYPE_BASH|SH_TYPE_KSH|SH_TYPE_PROFILE|SH_TYPE_RESTRICTED);
+	return t & ~(SH_TYPE_KSH|SH_TYPE_PROFILE|SH_TYPE_RESTRICTED);
 }
 
 
@@ -1315,6 +1301,8 @@ Shell_t *sh_init(register int argc,register char *argv[], Shinit_f userinit)
 		type = sh_type(*argv);
 		if(type&SH_TYPE_LOGIN)
 			shp->login_sh = 2;
+		if(type&SH_TYPE_POSIX || strcmp(astconf("CONFORMANCE",0,0),"standard")==0)
+			sh_onoption(SH_POSIX);
 	}
 	env_init(shp);
 	if(!ENVNOD->nvalue.cp)
@@ -1378,17 +1366,6 @@ Shell_t *sh_init(register int argc,register char *argv[], Shinit_f userinit)
 		/* check for profile shell */
 		else if(type&SH_TYPE_PROFILE)
 			sh_onoption(SH_PFSH);
-#endif
-#if SHOPT_BASH
-		/* check for invocation as bash */
-		if(type&SH_TYPE_BASH)
-		{
-		        shp>userinit = userinit = bash_init;
-			sh_onoption(SH_BASH);
-			sh_onstate(SH_PREINIT);
-			(*userinit)(shp, 0);
-			sh_offstate(SH_PREINIT);
-		}
 #endif
 		/* look for options */
 		/* shp->st.dolc is $#	*/
diff --git a/src/cmd/ksh93/sh/lex.c b/src/cmd/ksh93/sh/lex.c
index dac33aa66..0988802d8 100644
--- a/src/cmd/ksh93/sh/lex.c
+++ b/src/cmd/ksh93/sh/lex.c
@@ -576,13 +576,9 @@ int sh_lex(Lex_t* lp)
 						return(lp->token=c);
 					else if(c=='&')
 					{
-						if(!sh_isoption(SH_POSIX) && n=='>' && (sh_isoption(SH_BASH) || sh_isstate(SH_PROFILE)))
+						if(n=='>' && !sh_isoption(SH_POSIX))
 						{
-							if(!sh_isoption(SH_BASH) && !lp->nonstandard)
-							{
-								lp->nonstandard = 1;
-								errormsg(SH_DICT,ERROR_warn(0),e_lexnonstandard,shp->inlineno);
-							}
+							/* bash-style "&>file" shorthand for ">file 2>&1" */
 							lp->digits = -1;
 							c = '>';
 						}
diff --git a/src/cmd/ksh93/sh/main.c b/src/cmd/ksh93/sh/main.c
index 2670a280e..8078da34f 100644
--- a/src/cmd/ksh93/sh/main.c
+++ b/src/cmd/ksh93/sh/main.c
@@ -163,7 +163,6 @@ int sh_main(int ac, char *av[], Shinit_f userinit)
 	if((beenhere++)==0)
 	{
 		sh_onstate(SH_PROFILE);
-		((Lex_t*)shp->lex_context)->nonstandard = 0;
 		if(shp->gd->ppid==1)
 			shp->login_sh++;
 		if(shp->login_sh >= 2)
@@ -177,12 +176,14 @@ int sh_main(int ac, char *av[], Shinit_f userinit)
 			sh_onoption(SH_BGNICE);
 			sh_onoption(SH_RC);
 		}
-		if(!sh_isoption(SH_RC) && (sh_isoption(SH_BASH) && !sh_isoption(SH_POSIX)
 #if SHOPT_REMOTE
-		   || !fstat(0, &statb) && REMOTE(statb.st_mode)
-#endif
-		  ))
+		/*
+		 * Building ksh with SHOPT_REMOTE=1 causes ksh to set --rc if stdin is
+		 * a socket (presumably part of a remote shell invocation.)
+		 */
+		if(!sh_isoption(SH_RC) && !fstat(0, &statb) && REMOTE(statb.st_mode))
 			sh_onoption(SH_RC);
+#endif
 		for(i=0; i<elementsof(shp->offoptions.v); i++)
 			shp->options.v[i] &= ~shp->offoptions.v[i];
 		if(sh_isoption(SH_INTERACTIVE))
@@ -212,28 +213,16 @@ int sh_main(int ac, char *av[], Shinit_f userinit)
 		{
 			if(!sh_isoption(SH_NOUSRPROFILE) && !sh_isoption(SH_PRIVILEGED) && sh_isoption(SH_RC))
 			{
-#if SHOPT_BASH
-				if(sh_isoption(SH_BASH) && !sh_isoption(SH_POSIX))
-				{
+				if(name = sh_mactry(shp,nv_getval(ENVNOD)))
+					name = *name ? strdup(name) : (char*)0;
 #if SHOPT_SYSRC
-					sh_source(shp, iop, e_bash_sysrc);
-#endif
-					sh_source(shp, iop, shp->gd->rcfile ? shp->gd->rcfile : sh_mactry(shp,(char*)e_bash_rc));
-				}
-				else
+				if(!strmatch(name, "?(.)/./*"))
+					sh_source(shp, iop, e_sysrc);
 #endif
+				if(name)
 				{
-					if(name = sh_mactry(shp,nv_getval(ENVNOD)))
-						name = *name ? strdup(name) : (char*)0;
-#if SHOPT_SYSRC
-					if(!strmatch(name, "?(.)/./*"))
-						sh_source(shp, iop, e_sysrc);
-#endif
-					if(name)
-					{
-						sh_source(shp, iop, name);
-						free(name);
-					}
+					sh_source(shp, iop, name);
+					free(name);
 				}
 			}
 			else if(sh_isoption(SH_INTERACTIVE) && sh_isoption(SH_PRIVILEGED))
diff --git a/src/cmd/ksh93/sh/name.c b/src/cmd/ksh93/sh/name.c
index 670071ce7..c3fe583e7 100644
--- a/src/cmd/ksh93/sh/name.c
+++ b/src/cmd/ksh93/sh/name.c
@@ -549,7 +549,7 @@ void nv_setlist(register struct argnod *arg,register int flags, Namval_t *typ)
 				{
 					if(!(arg->argflag&ARG_APPEND))
 						_nv_unset(np,NV_EXPORT);
-					if(!sh_isoption(SH_BASH) && !(array&NV_IARRAY) && !nv_isarray(np))
+					if(!(array&NV_IARRAY) && !nv_isarray(np))
 						nv_setarray(np,nv_associative);
 				}
 			skip:
diff --git a/src/cmd/ksh93/sh/xec.c b/src/cmd/ksh93/sh/xec.c
index 6eacb6432..6c620badd 100644
--- a/src/cmd/ksh93/sh/xec.c
+++ b/src/cmd/ksh93/sh/xec.c
@@ -1086,19 +1086,6 @@ int sh_exec(register const Shnode_t *t, int flags)
 					}
 					if(np)
 						flgs |= NV_UNJUST;
-#if SHOPT_BASH
-					if(np==SYSLOCAL)
-					{
-						if(!nv_getval(SH_FUNNAMENOD))
-							errormsg(SH_DICT,ERROR_exit(1),"%s: can only be used in a function",com0);
-						if(!shp->st.var_local)
-						{
-							sh_scope(shp,(struct argnod*)0,0);
-							shp->st.var_local = shp->var_tree;
-						}
-			
-					}
-#endif /* SHOPT_BASH */
 					if(np && np->nvalue.bfp==SYSTYPESET->nvalue.bfp)
 					{
 						/* command calls b_typeset(); treat as a typeset variant */
@@ -1134,7 +1121,7 @@ int sh_exec(register const Shnode_t *t, int flags)
 			
 						}
 #endif /* SHOPT_TYPEDEF */
-						if((shp->fn_depth && !shp->prefix) || np==SYSLOCAL)
+						if((shp->fn_depth && !shp->prefix))
 							flgs |= NV_NOSCOPE;
 					}
 					else if(np==SYSEXPORT)
diff --git a/src/cmd/ksh93/tests/io.sh b/src/cmd/ksh93/tests/io.sh
index cf37d0ce5..f2c53ee14 100755
--- a/src/cmd/ksh93/tests/io.sh
+++ b/src/cmd/ksh93/tests/io.sh
@@ -597,5 +597,24 @@ then	trap 'sleep_pid=0; kill "$ksh_pid"; err_exit "'\''read'\'' hangs on EOF wit
 else	err_exit "mkfifo failed; cannot test reading from FIFO"
 fi
 
+# ======
+# "&>file" redirection operator, shorthand for ">file 2>&1" (new as of 93u+m; inherited from old SHOPT_BASH)
+if	[[ -o ?posix ]]
+then	set -o posix
+	# This should print in a background job, then create an empty file, as '>aha1.txt' is a separate command.
+	eval '	print -u1 bad1 &>aha1.txt
+		print -u2 bad2 &>aha2.txt
+	' >/dev/null 2>&1
+	[[ -s aha1.txt ]] && err_exit "&> not deactivated in POSIX mode (stdout; got '$(cat aha1.txt)')"
+	[[ -s aha2.txt ]] && err_exit "&> not deactivated in POSIX mode (stderr; got '$(cat aha2.txt)')"
+	set +o posix
+	# This should write the text to the file.
+	eval '	print -u1 ok1 &>aha1.txt
+		print -u2 ok2 &>aha2.txt
+	' >/dev/null 2>&1
+	[[ $(< aha1.txt) == ok1 ]] || err_exit '&> does not redirect stdout'
+	[[ $(< aha2.txt) == ok2 ]] || err_exit '&> does not redirect stderr'
+fi
+
 # ======
 exit $((Errors<125?Errors:125))
diff --git a/src/cmd/ksh93/tests/options.sh b/src/cmd/ksh93/tests/options.sh
index 28eb7df43..bd15e56b4 100755
--- a/src/cmd/ksh93/tests/options.sh
+++ b/src/cmd/ksh93/tests/options.sh
@@ -53,28 +53,9 @@ then	err_exit 'sh -e not working'
 fi
 [[ $($SHELL -D -c 'print hi; print $"hello"') == '"hello"' ]] || err_exit 'ksh -D not working'
 
-env=$tmp/.env
-print $'(print -u1 aha) &>/dev/null\n(print -u2 aha) &>/dev/null' > $env
 rc=$tmp/.kshrc
 print $'PS1=""\nfunction env_hit\n{\n\tprint OK\n}' > $rc
 
-export ENV=/.$env
-if	[[ ! -o privileged ]]
-then
-	got=$($SHELL -E -c : 2>/dev/null)
-	if	[[ $g ]]
-	then
-		got=$(printf %q "$got")
-		err_exit "\$ENV file &>/dev/null does not redirect stdout -- expected '', got $got"
-	fi
-	got=$(set +x; $SHELL -E -c : 2>&1 >/dev/null)
-	if	[[ $got != *nonstandard* || $got == *$'\n'* ]]
-	then
-		got=$(printf %q "$got")
-		err_exit "\$ENV file &>/dev/null does not redirect stderr -- expected one diagnostic line, got $got"
-	fi
-fi
-
 export ENV=/.$rc
 if	[[ -o privileged ]]
 then