Re: Git files data formats documentation

You might make some notes about old format headers and new format ones
and the use_legacy_headers flag.

I started off looking at packs so I knew about TYPE_AND_BASE128_SIZE.
Next I wanted to write objects so I looked at sha1_file.c. If you
don't look at the code closely write_binary_header() will lead you to
believe that object files use TYPE_AND_BASE128_SIZE. It took me a
couple of hours to notice use_legacy_headers and discover that it
defaults to on.

Jon Smirl
jonsmirl@gmail.com