Re: [RFC] introduce GIT_WORK_DIR environment variable

Linus Torvalds [off-list ref] writes:

So let's say that you have a git repository for tracking all that. The 
"working tree" for that git repository would be your home directory.

Now, imagine that you *also* want to track something else in git, that you 
*also* have in your home directory. Say your ".bashrc" files etc. They 
have nothing to do with your music tracking setup, so you don't want to 
track it in the same git repository, and you want to have a totally 
different .git/index file for those. But again, the *working*tree* is 
actually your home directory.

That is a good example usage schenario; we would need to think
about what to do with .gitignore (and .gitattributes if we will
have that in-tree), though.