A few bugs and suggestions

I'd like to say that I love p2k-core; but it has some things that could be fixed.
I'd love to be able to help, but I'm not sure which version to start with.

1) Filenames with spaces don't work. The input code splits on spaces and ignores quotes and escapes (at least for spaces) and therefore "file u Chord low.mid /a/" tries to upload "Chord" as "low.mid".

2) "file u blah /a/dir" uploads blah as /a/dirblah.

3) Program crashes if you file u or file d without a file l, at least with my Motorola V9m.

4) info *.utf (as per file d /blah/blah/blah.utf) crashes.

5) "file a blah xx" creates empty files.

6) "file u nonexistent_file /a/" creates empty files (I believe.)

Suggestion:
The input interface is not very robust; It already uses readline but that's barely a start. Check for existence of files immediately upon argument parsing. Possibly use a tokenize function, treat each command as its own function (lookup table), pass arguments as argc/v combo just like the OS does to main(). Store file list in tab completion to tab-complete mobile phone paths.

7) I think it leaves a junk file called ~/P2KFILELIST.

8) p2kc leaves files in the homedir as well.

Suggestion:
Global variables.

9) p2k-core cannot switch my phone into p2k mode (It's exported as a Class 0xFF device instead of the Communication class and obviously has specific PIDs.)

10) seem d x x doesn't allow length, some seems at length 00 hang all p2k programs.

11) p2kc has to interface with p2k-core in a specific manner.

Suggestion:
Break the p2k-specific stuff out into a separate library, possibly named libp2k, with a well-defined API. It'll contain code to interface with given USB devices, upload and download files, get file lists, seems. p2k-core can be a text interface to the library, and p2kc can be a graphical interface to the same library. e.g. in p2kc instead of being like "send 'file u blah blah' to p2k-core and hope it works and parse its reply", just "if(!p2k_send(file, dest))" or something. All other programs wanting p2k support can just link with this library.

Ancillary:
Scripting interface. I already do this with saved command lists and then just p2k-core < script. If comments were supported, e.g., ignoring lines starting with #, one could make a script, prefix it with #!/path/to/p2k-core and then run it as ./script to automatically perform some actions on a phone. Another plus? Supporting the P2KCommander scripting language.

Let me know your plans and if it's not on your implementation radar, I'd love to do any and/or all of these. I'm well-versed in C and various other languages.