Hi.

If .desktop file is non-executable, nautilus shows its full name (together with .desktop extension), at least in Compact View.  If such a file is executable, nautilus shows only its name (without the extension).

The bug is that if you rename a non-executable file, nautilus appends additional .desktop extension, which results in two extensions.  It is good for executable .desktop files, because in that case the string you are editing when renaming a file does not have .desktop extension, but it is faulty for non-executable files, because the extension is already there.

To reproduce:
- Open nautilus and go to ~/.config/autostart/ directory;
- If there are no files there, create a dummy command in `gnome-session-properties';
- There should be at least one non-executable .desktop file in the directory. Rename the file to change its base name (part of the file name without the 
extension) to something else 

What happens: additional .desktop extension is appended
What should happen: base name is changed, no additional extension is appended.

I also found a discussion at askubuntu.com:
http://askubuntu.com/questions/17220/can-nautilus-display-a-desktop-file-by-its-real-name/17262#17262

Nautilus 3.0.2