e= q='?' a='*' t=texttext s='ast*que?non' p='/et[c]/' w='a b c' b='{{(#)}}'
h='##'
failures=''
ok=''

testcase() {
	code="$1"
	expected="$2"
	oIFS="$IFS"
	eval "$code"
	IFS='|'
	result="$#|$*"
	IFS="$oIFS"
	if [ "x$result" = "x$expected" ]; then
		ok=x$ok
	else
		failures=x$failures
		echo "For $code, expected $expected actual $result"
	fi
}

set -f
testcase 'set -- $s'				'1|ast*que?non'
testcase 'set -- ${s%\?*}'			'1|ast*que'
testcase 'set -- "${s%\?*}"'			'1|ast*que'
testcase 'set -- ${s%\**}'			'1|ast'
testcase 'set -- "${s%\**}"'			'1|ast'
testcase 'set -- ${s%"$q"*}'			'1|ast*que'
testcase 'set -- "${s%"$q"*}"'			'1|ast*que'
testcase 'set -- ${s%"$a"*}'			'1|ast'
testcase 'set -- "${s%"$a"*}"'			'1|ast'
testcase 'set -- ${s%"$q"$a}'			'1|ast*que'
testcase 'set -- "${s%"$q"$a}"'			'1|ast*que'
testcase 'set -- ${s%"$a"$a}'			'1|ast'
testcase 'set -- "${s%"$a"$a}"'			'1|ast'
set +f

testcase 'set -- "${b%\}}"'			'1|{{(#)}'
# Parentheses are special in ksh, check that they can be escaped
testcase 'set -- "${b%\)*}"'			'1|{{(#'
testcase 'set -- "${h#\#}"'			'1|#'

testcase 'set -- ${p%"${p#?}"}'			'1|/'
testcase 'set -- ${p%"${p#??????}"}'		'1|/etc'
testcase 'set -- ${p%"${p#???????}"}'		'1|/etc/'
testcase 'set -- "${p%"${p#?}"}"'		'1|/'
testcase 'set -- "${p%"${p#??????}"}"'		'1|/et[c]'
testcase 'set -- "${p%"${p#???????}"}"'		'1|/et[c]/'
testcase 'set -- ${p#"${p}"}'			'0|'
testcase 'set -- "${p#"${p}"}"'			'1|'
testcase 'set -- "${p#*\[}"'			'1|c]/'

test "x$failures" = x