Re: Request for detailed documentation of git pack protocol

Scott Chacon [off-list ref] writes:

I'm trying to take this whole thread and actually write an RFC style
document for all of this stuff, but I'm still unclear on the .have
portion of the conversation.  Pointing me to an earlier relevant
thread in the Git mailing list would be fine, too - it's difficult to
search for '.have' usefully.

The actual patch series is this.

    http://thread.gmane.org/gmane.comp.version-control.git/95351

The thread the patch series's cover letter refers as "the topic discussed
earlier" is this.

    http://thread.gmane.org/gmane.comp.version-control.git/95072/focus=95256

Here is how people can dig this, for people's reference.

 (1) Where in the code is this feature implemented?

     $ git grep -n -e '\.have' -- '*.c'
     builtin-receive-pack.c:647:             add_extra_ref(".have",...
     connect.c:87:               name_len == 5 && !memcmp(".have", ...

 (2) When was it added?

     $ git blame -L 645,650 builtin-receive-pack.c
     d79796bc (Junio C Hamano 2008-09-09 01:27:10 -0700 645)              ex
     d79796bc (Junio C Hamano 2008-09-09 01:27:10 -0700 646)              ex
     d79796bc (Junio C Hamano 2008-09-09 01:27:10 -0700 647)                
     d79796bc (Junio C Hamano 2008-09-09 01:27:10 -0700 648)         }
     d79796bc (Junio C Hamano 2008-09-09 01:27:10 -0700 649)         transpo
     d79796bc (Junio C Hamano 2008-09-09 01:27:10 -0700 650)         free(ot
  
 (3) Go to http://news.gmane.org/gmane.comp.version-control.git/ and page
     back to the timeframe: