Thank you Kovid Goyal for your wonderful Calibre!
I use Calibre Portable, and maintain more than one library on a portable drive. Every time I plug the drive in to a different computer, the drive name changes. So I took to using relative paths for the different libraries, '../../MomsLibrary' for example. This works fine, but every time I open the library, calibre creates a 'new' library path with the full path and drive letter. And the library menu quickly gets very cluttered!
From what I know of programming python, I realize it would be fairly easy to check if the path is relative, and leave it that way, instead of adding every new drive/fullpath. Would it possible to implement this? Thanks in advance!
(And maybe even an option in the 'Switch/create library' to choose a library using a 'relative path'; twould be much easier then coding in and working out all those '../../' etc.!

)