Re: renormalize histroy with smudge/clean-filter

> > > ahah, so it is passed via environment variable to the subprocess.
> >
> > I find this to be confusing: the primary call should not need this parameter,
> > since it is invoked from HEAD anyway.
> 
> No, the primary call I think would need the parameter too; it changes
> HEAD immediately when it starts rebasing, and continues changing it
> with each commit it rebases; since it's operating on older versions,
> by default it'd likely pick the .gitattributes from those older
> versions as it goes.

> > Everything else gets it via env-vars.
> > I'd assume this variable will also be passed to the commands which are invoked
> > by the -x switch?
> 
> Yes, I was surprised Phillip's command with --attr-source on the
> outer-level git invocation worked until I discovered that the code
> indeed sets the environment variable (which subprocesses, like those
> created by the --exec/-x switch, will inherit).  So, yes, the -x
> switch stuff seems to inherit that environment variable that the
> primary call sets in response to that parameter.