version=4
opts=\
uversionmangle=s/(\d)[_\.\-\+]?((RC|rc|pre|dev|beta|alpha)\d*)$/$1~$2/;s/RC/rc/;s/_/./g,\
dversionmangle=s/\+(debian|dfsg|ds|deb)\d*$// \
https://grass.osgeo.org/grass83/source/ \
grass-([\d\._]*(?:(?:RC|rc|pre|dev|beta|alpha)?\d*))\.(?:tgz|tbz|txz|(?:tar\.(?:gz|bz2|xz)))
