if (( $UID == 0 )); then
	echo "new-exp.tests: the test suite should not be run as root" >&2
fi

# must do this because posix mode causes process substitution to be disabled
# and flagged as a syntax error, which causes the shell to exit
set +o posix

expect()
{
        echo expect "$@"
}

HOME=/usr/homes/chet	# to make the check against new-exp.right work
expect '<foo bar>'
recho "${undef-"foo bar"}"	# should be foo bar
expect '<foo>'
recho "${und="foo"}"		# should be foo

expect "<$HOME>"
recho ${HOME-"}"}
expect "<$HOME>"
recho "${HOME-'}'}"
expect "<$HOME>"
recho "${HOME-"}"}"

expect $0: 'HOME: }: syntax error: operand expected (error token is "}")'
recho "${HOME:`echo }`}"	# should be a math error -- bad substring substitution

expect unset
_ENV=oops
x=${_ENV[(_$-=0)+(_=1)-_${-%%*i*}]}
echo ${x:-unset}

expect "<$HOME>"
recho ${HOME}
expect "<$HOME>"
recho ${HOME:-`echo }`}
expect "<$HOME>"
recho ${HOME:-`echo "}"`}
expect "<$HOME>"
recho "${HOME:-`echo "}"`}"
expect "<$HOME>"
recho "$(echo "${HOME}")"
expect "<$HOME>"
recho "$(echo "$(echo ${HOME})")"
expect "<$HOME>"
recho "$(echo "$(echo "${HOME}")")"

P=*@*
expect '<*@>'
recho "${P%"*"}"	# 
expect '<*@>'
recho "${P%'*'}"	# 
expect '<@*>'
recho "${P#\*}"		# should be @*

expect '<)>'
recho "$(echo ")")"	# should be )
expect '<")">'
recho "$(echo "\")\"")"	# should be ")"

foo='abcd   '
expect '<-abcd> <->'
recho -${foo}-		# should be -abcd -
expect '<-abcd> <->'
recho -${foo% *}-	# should be -abcd -
expect '<-abcd->'
recho -${foo%% *}-	# should be -abcd-

foo=bar
expect '<bar foo>'
echo -n $foo' ' ; echo foo

expect '<bar foo>'
echo -n $foo" " ; echo foo

expect '<bar foo>'
echo -n "$foo " ; echo foo

expect '<barfoo>'
echo -e "$foo\c " ; echo foo

expect '<barfoo>'
echo -e $foo"\c " ; echo foo

# make sure backslashes are preserved in front of characters that are not
# valid backslash escapes
expect '<\x>'
echo -e '\x'

# substring tests
z=abcdefghijklmnop
expect '<abcd>'
recho ${z:0:4}

expect '<efg> <nop>'
recho ${z:4:3} ${z:${#z}-3:3}

expect '<efg> <nop>'
recho ${z:4:3} ${z: -3:3}

expect '<hijklmnop>'
recho ${z:7:30}

expect '<abcdefghijklmnop>'
recho ${z:0:100}

expect '<abcdefghijklmnop>'
recho ${z:0:${#z}}

set 'ab cd' 'ef' 'gh ij' 'kl mn' 'op'
expect '<ab cd> <ef>'
recho "${@:1:2}"

expect '<gh ij> <kl mn>'
recho "${@:3:2}"

expect '<gh ij> <kl mn> <op>'
recho "${@:3:4}"

expect '<ab cd> <ef> <gh ij> <kl mn> <op>'
recho "${@:1:$#}"

# code to ad-hoc parse arithmetic expressions in substring expansions was
# broken until post-2.04
base=/home/chet/foo//bar
string1=$base/abcabcabc
x=1 j=4

expect '</home/chet/foo//bar/abcabcabc>'
recho ${string1:0}

expect '<home/chet/foo//bar/abcabcabc>'
recho ${string1:1}

expect '<home>'
recho ${string1:(j?1:0):j}

expect '<home>'
recho ${string1:j?1:0:j}

expect '<home>'
recho ${string1:(j?(x?1:0):0):j}

expect '<home>'
recho ${string1:j?(x?1:0):0:j}

unset base string1 x j

# indirect variable references
expect '<abcdefghijklmnop>'
recho ${!9:-$z}

ef=4
expect '<4>'
recho ${!2}

expect '<op>'
recho ${!#}

set a b c d e
a=
expect '<abcdefghijklmnop>'
recho ${a:-$z}
expect '<abcdefghijklmnop>'
recho ${!1:-$z}

expect nothing
recho ${a-$z}
expect nothing
recho ${!1-$z}

set -- a 'b c' d
unset foo
foo=@
expect '<a> <b> <c> <d>'
recho ${!foo}
expect '<a> <b c> <d>'
recho "${!foo}"

set -u
expect $0: ABX: unbound variable
( recho ${ABX} )
set +u

expect $0: '$6: cannot assign in this way'
recho ${6="arg6"}

v=abcde

# sed-like variable substitution
expect '<xxcde>'
recho ${v/a[a-z]/xx}
expect '<axxde>'
recho ${v/a??/axx}
expect '<abxyz>'
recho ${v/c??/xyz}
expect '<abbcde>'
recho ${v/#a/ab}
expect '<abcde>'
recho ${v/#d/ab}
expect '<abcabe>'
recho ${v/d/ab}
expect '<abcdlast>'
recho ${v/%?/last}
expect '<abcde>'
recho ${v/%x/last}

av=(abcd efgh ijkl mnop qrst uvwx)

expect '<xxcd>'
recho ${av/??/xx}
expect '<abxx>'
recho ${av/%??/xx}
expect '<xxgh>'
recho ${av[1]/??/xx}
expect '<efgh>'
recho ${av[1]/%ab/xx}
expect '<xxfgh>'
recho ${av[1]/#?/xx}
expect '<zagh>'
recho ${av[1]/??/za}
expect '<zaza>'
recho ${av[1]//??/za}
expect '<zagh>'
recho ${av[1]/#??/za}
expect '<efza>'
recho ${av[1]/%??/za}

expect '<yyy> <yyy> <yyy> <yyy> <yyy> <yyy>'
recho ${av[@]/*/yyy}
expect '<yyy> <yyy> <yyy> <yyy> <yyy> <yyy>'
recho ${av[@]/#*/yyy}
expect '<yyy> <yyy> <yyy> <yyy> <yyy> <yyy>'
recho ${av[@]/%*/yyy}
expect '<yyy> <efgh> <ijkl> <mnop> <qrst> <uvwx>'
recho ${av[@]/a*/yyy}
expect '<abxx> <efxx> <ijxx> <mnxx> <qrxx> <uvxx>'
recho ${av[@]/%??/xx}

set abcd efgh ijkl mnop qrst uvwx

expect '<xxcd>'
recho ${1/??/xx}
expect '<xxcd> <xxgh> <xxkl> <xxop> <xxst> <xxwx>'
recho ${@/??/xx}
expect '<xxcd> <xxgh> <xxkl> <xxop> <xxst> <xxwx>'
recho ${@/%??/xx}
expect '<zaza>'
recho ${3//??/za}
expect '<efza>'
recho ${3/%??/za}
expect '<zaza> <zaza> <zaza> <zaza> <zaza> <zaza>'
recho ${@//??/za}
expect '<zacd> <zagh> <zakl> <zaop> <zast> <zawx>'
recho ${@/#??/za}
expect '<yyy> <yyy> <yyy> <yyy> <yyy> <yyy>'
recho ${@//*/yyy}
expect '<yyy> <efgh> <ijkl> <mnop> <qrst> <uvwx>'
recho ${@//a*/yyy}
expect '<abcd> <efgh> <ijkl> <mnop> <qrst> <uvwyyy>'
recho ${@/%x*/yyy}

expect a newline
echo $abmcde

# sneaky way to replace a newline in a variable value with something else
AVAR=$'This\nstring\nhas\nmultiple\nlines.'
echo "${AVAR}"

eval BVAR=\"\${AVAR//$'\n'/-}\"
echo "$BVAR"

unset AVAR BVAR

# run process substitution tests in a subshell so that syntax errors
# caused by a shell not implementing process substitution (e.g., one
# built on a NeXT) will not cause the whole test to exit prematurely
${THIS_SH} ./new-exp1.sub

# run the tests of $(<filename) in a subshell to avoid cluttering up
# this script
${THIS_SH} ./new-exp2.sub

expect '<6>'
recho ${#:-foo}
expect $0: '${#:}: bad substitution'
echo ${#:}

expect "<'>"
recho "'"
expect '<">'
recho '"'
expect '<"hello">'
recho "\"hello\""

shift $#
unset foo
z=abcdef
z1='abc def'

expect '<>'
recho ${foo:-""}
expect nothing
recho ${foo:-"$@"}
expect '<>'
recho "${foo:-$@}"

# unset var
expect '<>'
recho ${foo:-"$zbcd"}
expect nothing
recho ${foo:-$zbcd}

# set var
expect '<abcdef>'
recho ${foo:-"$z"}
expect '<abc def>'
recho ${foo:-"$z1"}

expect '<abcdef>'
recho ${foo:-$z}
expect '<abc> <def>'
recho ${foo:-$z1}

expect '<abcdef>'
recho "${foo:-$z}"
expect '<abc def>'
recho "${foo:-$z1}"

expect '<abcdef>'
recho "${foo:-"$z"}"
# this disagrees with sh and ksh, but I think it is right according
# to posix.2.
expect '<abc def>'
recho "${foo:-"$z1"}"

set ab cd ef gh
expect '<ab> <cd> <ef> <gh>'
recho ${foo:-"$@"}
expect '<ab> <cd> <ef> <gh>'
recho "${foo:-$@}"
expect '<ab> <cd> <ef> <gh>'
recho "${foo:-"$@"}"

shift ${#}
expect nothing
recho $xxx"$@"
expect nothing
recho ${foo:-$xxx"$@"}
expect '<>'
recho "${foo:-$xxx$@}"
expect '<>'
recho "${foo:-$xxx"$@"}"

expect nothing
recho $xxx"$@"
expect nothing
recho "$xxx$@"
expect nothing
recho "$@"$xxx

expect '<>'
recho $xxx""
expect '<>'
recho $xxx''
expect '<>'
recho ''$xxx
expect '<>'
recho ""$xxx

AB='abcdefghijklmnopqrstuvwxyz'

recho ${AB:7:15}
recho ${AB:15:7}

recho ${AB:20}

recho ${AB:0}
recho ${AB:0:20}

recho ${AB:10:7}
recho ${AB:10:3+4}
recho ${AB:20/2:3+4}

set 1 2 3 4 5 6
recho \""${*:2:2}"\"

IFS=:
recho \""${*:2:2}"\"

IFS=$' \t\n'

z=123456

recho \""${z:2:2}"\"
recho \""${z:2}"\"
recho \""${z:2:4}"\"
recho \""${z:2:6}"\"

set $'\1' $'\2' $'\177'

recho $*
recho $@

recho ${*}
recho ${@}

xx=one/two/two
recho ${xx%/*}
recho ${xx/\/two}

yy=oneonetwo
recho ${yy//one}
recho ${yy/\/one}

xx=oneonetwo

recho ${xx/one}
recho ${xx//one}
recho ${xx/\/one}

# out-of-range substrings
var=abc
c=${var:3}
expect nothing
recho $c
c=${var:4}
expect nothing
recho $c
# as of bash-4.2, negative LENGTH means offset from the end
c=${var:0:-2}
expect '<a>'
recho $c

var=abcdefghi
c=${var:3:12}
recho $c
c=${var:4:20}
recho $c

# make sure null patterns work
xxx=endocrine
yyy=n
unset zzz

recho ${xxx/$yyy/*}
recho ${xxx//$yyy/*}

recho ${xxx/$zzz/*}
recho ${xxx//$zzz/*}

recho ${xxx//%${zzz}/}
recho ${xxx//%${zzz}}
recho ${xxx//#${zzz}/}
recho ${xxx//#${zzz}}

# make sure null strings are replaced appropriately
unset var
var=
echo "${var/#/x}"
echo "${var/*/x}"
echo "${var//*/x}"

var=abc
echo "${var/#/x}"
echo "${var/*/x}"
echo "${var//*/x}"
unset var

# another case that caused a core dump in bash-2.0
XPATH=/usr/bin:/bin:/usr/local/bin:/usr/gnu/bin::/usr/bin/X11:/sbin:/usr/sbin

recho ${XPATH//:/ }

xx=(ar as at au av aw ax ay az)

recho ${xx[@]/a/}
recho ${xx[@]//a/}

recho ${xx[*]/a/}
recho ${xx[*]//a/}

recho ${xx[@]%?}
recho ${xx[*]%?}

recho ${xx[@]#?}
recho ${xx[*]#?}

set -- ar as at au av aw ax ay az

recho ${@/a/}
recho ${@//a/}

recho ${*/a/}
recho ${*//a/}

recho ${@%?}
recho ${*%?}

recho ${@#?}
recho ${*#?}

shift ${#}
set -u
( recho $9 ; echo after 1)
( recho ${9} ; echo after 2)
( recho $UNSET ; echo after 3)
( recho ${UNSET} ; echo after 4)
( recho "$UNSET" ; echo after 5)
( recho "${UNSET}" ; echo after 6)
( recho "${#UNSET}" ; echo after 7)
set +u

RECEIVED="12345"
recho "${RECEIVED:$((${#RECEIVED}-1)):1}"
RECEIVED="12345#"
recho "${RECEIVED:$((${#RECEIVED}-1)):1}"
RECEIVED="#"
recho "${RECEIVED:$((${#RECEIVED}-1)):1}"
RECEIVED=""
recho "${RECEIVED:$((${#RECEIVED}-1)):1}"

# tests of new prefix expansion ${!prefix*}
${THIS_SH} ./new-exp3.sub

# bug with indirect expansion through bash-2.05b
${THIS_SH} ./new-exp4.sub

# these caused errors and core dumps in versions before bash-2.04
c=""
echo ${c//${$(($#-1))}/x/}

set a b c d e f g
recho "$@"

set -- ${@:1:$(($# - 2))}
recho "$@"

set a b
recho ${@:1:$(($# - 2))}

recho ${@:1:0}
recho ${@:1:1}
recho ${@:1:2}

recho "${*:1:0}"

# this is an error -- negative expression
set a
recho ${@:1:$(($# - 2))}

XPATH=/bin:/usr/bin:/usr/ucb:/usr/local/bin:.:/sbin:/usr/sbin
set $( IFS=: ; echo $XPATH ) 

recho ${@##*/}
recho ${@%%[!/]*}

recho ${@#/*}
recho ${@%*/}

set /full/path/to/x16 /another/full/path

recho ${1%/*}
recho ${1%%[!/]*}
recho ${1#*/}
recho ${1##*/}

${THIS_SH} ./new-exp5.sub

unset var
var=blah

# these had better agree
echo ${var[@]:3}
echo ${var:3}
echo ${var[@]/#/--}
echo ${var/#/--}
echo ${var[@]##?}
echo ${var##?}

unset var
var=(abcde abcfg abchi)

# problems with anchoring pattern replacements
echo ${var[*]//#abc/foo}
echo ${var[*]/#abc/foo}
unset var

${THIS_SH} ./new-exp6.sub

${THIS_SH} ./new-exp7.sub

${THIS_SH} ./new-exp8.sub

# tests to check whether things like indirect expansion of a variable whose
# value is 'anothervar[@]' stop working
${THIS_SH} ./new-exp9.sub

# new parameter transformation `@' expansion operator
${THIS_SH} ./new-exp10.sub

# parameter substring replacement and removal operators with multibyte chars
${THIS_SH} ./new-exp11.sub

# problems with stray CTLNUL in bash-4.0-alpha
unset a
a=/a
recho "/${a%/*}"
recho "/${a///a/}"

# this must be last!
expect $0: 'ABXD: parameter unset'
recho ${ABXD:?"parameter unset"}
