[apple/shell_cmds.git] / sh / tests / expansion / plus-minus3.0

# $FreeBSD: head/bin/sh/tests/expansion/plus-minus3.0 206817 2010-04-18 22:13:45Z jilles $

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
}

# We follow original ash behaviour for quoted ${var+-=?} expansions:
# a double-quote in one switches back to unquoted state.
# This allows expanding a variable as a single word if it is set
# and substituting multiple words otherwise.
# It is also close to the Bourne and Korn shells.
# POSIX leaves this undefined, and various other shells treat
# such double-quotes as introducing a second level of quoting
# which does not do much except quoting close braces.

testcase 'set -- "${p+"/et[c]/"}"'              '1|/etc/'
testcase 'set -- "${p-"/et[c]/"}"'              '1|/et[c]/'
testcase 'set -- "${p+"$p"}"'                   '1|/etc/'
testcase 'set -- "${p-"$p"}"'                   '1|/et[c]/'
testcase 'set -- "${p+"""/et[c]/"}"'            '1|/etc/'
testcase 'set -- "${p-"""/et[c]/"}"'            '1|/et[c]/'
testcase 'set -- "${p+"""$p"}"'                 '1|/etc/'
testcase 'set -- "${p-"""$p"}"'                 '1|/et[c]/'
testcase 'set -- "${p+"\@"}"'                   '1|@'
testcase 'set -- "${p+"'\''/et[c]/'\''"}"'      '1|/et[c]/'

test "x$failures" = x