check $expected $stored_contents 'keep first'
# check -outfile
-set +e
-mhstore 5 -outfile "$actual" 2>&1 | grep -v '^storing'
-set -e
+mhstore 5 -outfile "$actual" 2>&1 | grep -v '^storing' && \
+ echo unexpected output from test-mhstore check -outfile >&2
check $expected "$actual" 'keep first'
# check -outfile -
-echo 'storing message 5 to stdout' >> "$expected"
+echo 'storing message 5 to stdout' >>"$expected"
mhstore 5 -outfile - >"$actual" 2>&1
check $expected "$actual"