# See whether or not we can use `diff -a'
#( diff -a ./printf.tests ./printf.tests >/dev/null 2>&1 ) && AFLAG=-a

# use cat -v (and assume it's there) to make control chars visible
${THIS_SH} ./printf.tests 2>&1 | cat -v > /tmp/xx 
#diff $AFLAG /tmp/xx printf.right && rm -f /tmp/xx
diff /tmp/xx printf.right && rm -f /tmp/xx