This page tests using the directive
(:linebreaks:) together with a <div> that has white-space=pre.
Btw: While doing this test case I accidentally spelled white-space as whitespace. Maybe it'd be a good idea if PmWiki recognized both spellings.
(:linebreaks:) >>white-space=pre<< This section has whitespace=pre see! But there are double line breaks :-( >><<
This section has whitespace=pre see!