Unable to pass parameters with spaces in

Binary package hint: kdesudo

I can't find any way to pass a parameter that has spaces in. With sudo and kdesu.distrib I can do this, and it works to open a file in a folder that has spaces in the name:

kdesu.distrib kate "test folder/test.txt"
sudo kate "test folder/test.txt"

But if I do that same command with kdesudo, Kate says it's opening the file /home/user/'test folder/test.txt' (note the single quotes around the file name that was passed in double quotes). Certainly kdesudo isn't behaving like sudo or kdesu.distrib here. I've come across this issue attempting to fix bugs 152856 (1) and 162279 (2), which are both issues running a process as root where a parameter has a space in it. I'm running Kubuntu Hardy KDE3 (kdesudo 2.5.1).

(1): https://bugs.launchpad.net/ubuntu/+source/gdebi/+bug/152856
(2): https://bugs.launchpad.net/ubuntu/+source/dolphin/+bug/162279