Though your patch was against the TreeBrowser plugin, I took it and applied it against Geany's FileBrowser plugin as well :).
Cool :-)
With every new thing I find out about geany it becomes more and more the only editor I need. I also found code nagivation plugin and it just my C coding much easier. I hope that file jump will be implemented soon and that maybe similar thing will be made for python. Finding proper module in python code takes a lot of time (especially when I jump between files often), so being able to jump to file without needing mouse would be a great benefit :-)