Comment 10 for bug 396736

Chris, to correctly solve this issue I would need a robust regular expression for extracting a floating point number (from something using the format "<string> <float>"), which I can feed into Gregex in extract_point_size(). Also its prototype would have to be changed to return a gdouble. With fabs() it has to be ensured to never return a negative value. I'm not sure at the moment how pedantic one has to be about negative values though. For that very reason, extract_point_size() right now returns gunit.