This fixes the issue that something like [http://url/ link]s (i.e. text directly...

This fixes the issue that something like [url/ link]s (i.e. text directly following
the closing square bracket) would produce something ugly in printing:
  link (http://url/)s
Now it finishes the word first:
  links (http://url/)
The given example seems pointless, but in languages other than English this happens more
frequently.