/
v?(?:(?:(?P<epoch>[0-9]+)!)?(?P<release>[0-9]+(?:\.[0-9]+)*)(?P<pre>[-_\.]?(?P<pre_l>(a|b|c|rc|alpha|beta|pre|preview))[-_\.]?(?P<pre_n>[0-9]+)?)?(?P<post>(?:-(?P<post_n1>[0-9]+))|(?:[-_\.]?(?P<post_l>post|rev|r)[-_\.]?(?P<post_n2>[0-9]+)?))?(?P<dev>[-_\.]?(?P<dev_l>dev)[-_\.]?(?P<dev_n>[0-9]+)?)?)(?:\+(?P<local>[a-z0-9]+(?:[-_\.][a-z0-9]+)*))?
/
gm