rebase--interactive in C vs. sequencer

Hi Daniel,

in [1] you have told that you are working on porting rebase--interactive
to the C programming language.  In reply, Junio pointed out that a
consolidated "git sequencer" is desired.

The sequencer became a project idea for Google Summer of Code and I am
currently applying for that project.  But I had your mail in mind and 
do not want that any work of yours is thrown away. ;-)
So... what is the current state?
Are you still working on it?
Is there a code stub or even more code which could be used for the
sequencer task?

Regards,
 Stephan

References:
 1. http://marc.info/?l=git&m=120327576215702

-- 
Stephan Beyer [off-list ref], PGP 0x6EDDD207FCC5040F