#!/bin/bash

curl 'https://github.com/OfflineIMAP/offlineimap/releases/' 2> /dev/null | \
  tr '"<>' '\n' | \
  sed '
    s,^/OfflineIMAP/offlineimap/archive/refs/tags/v\([0-9.]\+\)\.tar\.gz$,\1,
    t
    d
  ' | \
  sort -V | \
  tail -n1