This fixes the issue that something like
[
http://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.
Make sure you use the established linktrail; some languages don't use
spacing between words as a separator.