Comment 2 for bug 669236

For the second point, it needs to be sorted based upon the locale of the user using LC_COLLATE. So technically you're both right. GTK+ is already sorting strings properly using the locale, but since we have no way to indicate to GTK+ that a random row is a file versus a folder we are currently hardcoding it to directories before files. We need to determine if some method exists to notify GTK+ so it could sort properly. Another option is to add a custom column type and cell renderer in treeview so we can customize the sorting function.