Why keep it simple when you can make it complicated? (French expression ;-)

My goal was to avoid automatic line breaks between a word and a punctuation mark.

I just thought it would be much simpler to replace the space with  !

So I do this for the punctuation marks at the end:

[ ]+([\?\:!€"»;\)\]}])

Replace by  $1

And this for the punctuation marks at the beginning:

(["«\(\[{])[ ]+([\w])

Replace by $1 $2

I think that will be enough.