#!/bin/bash

curl -Ss 'https://www.riverbankcomputing.com/software/qscintilla/download' \
| sed '
  s@^.*<a href=https://www\.riverbankcomputing\.com/static/Downloads/QScintilla/\([0-9.]\+\)/QScintilla_src-\1\.tar\.gz>.*$@\1@
  t
  d
' \
| sort -V \
| tail -n1