[notmuch] tag dir proposal [was: Re: Git as notmuch object store]

[Scott Robinson]

Excerpts from Jameson Rollins's message of Mon Jan 25 15:46:55 -0600 2010:
> I think this idea is a really good one and I would like to pursue it as
> a tangent thread here.  I was going to propose something very similar to
> this.  I think it's a very flexible idea that would help in a lot of
> ways.
> 
> [...]

This is getting involved. 

Maybe I'm missing something in this thread; but, why couldn't these complex and
context-sensitive decisions be delegated to sub-processes? ala git hooks?