version=3
opts=uversionmangle=s/(\d)[_\.\-\+]?((RC|rc|pre|dev|beta|alpha|b|a)[\-\.]?\d*)$/$1~$2/,dversionmangle=s/\+(debian|dfsg|ds|deb)\d*$// \
ftp://ftp.gnu.org/gnu/units (?:.*/)?units[_\-\.]?(\d\S*)\.(?:tgz|tbz2|txz|tar\.(?:gz|bz2|xz))
