Blehblehbleh got posted 16d 5h 42m 12s ago by blehbleh

Code:
alias gettime {
  if ($regex($strip($1-),/posted\s((?:\d+d\s)?(?:\d+h\s)?(?:\d+m\s)?(?:\d+s\s)?)\s?ago/)) { return $regml(1) }
}


Then just $gettime(input) well returned the parsed bit you wanted.