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
check $expected "$actual" 'keep first'
# check -outfile -