buffer_size=`line-reader-test buffer-size`
($PYTHON3 -c "import sys; sys.stdout.write('x' * ($buffer_size - 2))";
printf '\none line\ntwo lines\nentr\351e\nfour lines\n') > input
buffer_size=`line-reader-test buffer-size`
($PYTHON3 -c "import sys; sys.stdout.write('x' * ($buffer_size - 2))";
printf '\none line\ntwo lines\nentr\351e\nfour lines\n') > input