#!/bin/bash

curl 'https://bitbucket.org/rekkanoryo/purple-plugin-pack/downloads/' 2> /dev/null | \
  tr ' <>' '\n' | \
  grep '^href="/rekkanoryo/purple-plugin-pack/downloads/purple-plugin-pack-[0-9.]\+\.tar\.bz2"$' | \
  sed 's|^href="/rekkanoryo/purple-plugin-pack/downloads/purple-plugin-pack-\([0-9.]\+\)\.tar\.bz2"$|\1|' | \
  sort -V | \
  tail -n1