If you install rgedit (gtk3 ALPHA version) into the system (instead of into the user home), loading the plugin in gedit 3 fails like this:
Error opening userprefs.xml!
Traceback (most recent call last):
File "/usr/lib64/gedit/plugins/RCtrl.py", line 2780, in do_activate
self._instances[self.window] = RCtrlWindowHelper(self, self.window)
File "/usr/lib64/gedit/plugins/RCtrl.py", line 1374, in __init__
File "/usr/lib64/gedit/plugins/RCtrl.py", line 1490, in _insert_menu
pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(self.datadir+"/run_line.png" , 24, 24)
File "/usr/lib64/python2.7/site-packages/gi/types.py", line 68, in constructor
return info.invoke(cls, *args)
glib.GError: Failed to open file '/home/foobar/.local/share/gedit/plugins/RCtrl/run_line.png': No such file or directory
This is a regression as installing rgedit into the system worked with the gtk2 version (and gedit 2).
...those 2 paths (/usr/lib64/gedit/plugins and /usr/share/gedit/plugins) are used by all plugins, so they're proved to be correct. At least they are on Fedora 15 x86_64 :)
Please fix :) As soon as this is working, I'll try to get rgedit into the official Fedora repositories.
PS. installing the plugin into the user home works, i.e. loads (haven't really done anything with it yet).