EOF
check $expected $actual
+set +e
# Produce 0 if no messages match and standard output is not a tty.
# Note that there is an error message on stderr, but it's redirected
EOF
check $expected $actual
-
-set +e
-
-if test -w /dev/tty; then
+if test -w /dev/tty && printf '' >/dev/tty; then
# Produce no standard output if no messages match and standard
# output is a tty. To test that even when run with stdout
# detached, write directly to /dev/tty. Can't capture the