Re: [PATCH] [RFD] Add repoid identifier to commit

> This is an initial attempt to enable history tracking for multiple
> repositories in a consistent state. At the moment this can only be done
> by heuristic guessing on the parent dates and the committer names. 
> This fails for example with Dave Millers net-2.6 and sparc-2.6 trees, as
> in both cases the committer name is the same. It fails also completely
> in cases where the system clock of the committer is wrong and the merge
> is a head forward. The old bk repository contains entries from 1999 and
> 2027, which will happen also with git over the time. 
> 
> To identify a repository commit-tree tries to read an environment
> variable "GIT_REPOSITORY_ID" and has a fallback to the current working
> directory. The environment variable keeps the door open for managed
> repository id's, but the current working directory is certainly a quite
> helpful information to solve the origin decision for history tracking.
> 
> Adding a line after the committer should not break any existing tools
> AFAICS.
>