drop gendiff checkbashisms complaint; use unipolar branches for readability
drop gendiff checkbashisms complaint; use unipolar branches for readability

devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5,devzero2000/RPM5