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# $FreeBSD: releng/12.1/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
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