Drush ckeditor-download

This is a nice command for downloading the CKEditor libraries into the sites/all/libraries folder and I have used this many times in the past, but just realized that when running on a new machine that it didn't work.

Here is the error was getting after using verbose:

Executing: svn checkout                                [notice]

http://svn.fckeditor.net/CKEditor/releases/stable/

Duh! I needed Subversion installed.  Should have been one of the first steps since I use Subversion. But.........
What if some other drush command requires CVS or Git?  I don't think a developer should have to install every version system just to make sure it works.  Then again, installing Subversion is a piece of cake. :P