[GSoC 2010] The 6th week

Hi,

    A quick update of status.

1. The patch series has pass one round of modification, this include:
     1) The parsing method is changed from a two-pass way to a one-pass way;
     2) A simple code refactoring get done on 'parse_loc' which is
used by both line.c and builtin/blame.c
2. parent rewriting of line level history traversal
    To compose the basic code structure of this and complete part of
the code. You will see it in next week. :)

--
Regards!
Bo
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