Re: [WIP PATCH 01/18] rev-parse: add --internal-cwd and --internal-git-dir for tests

[Jonathan Nieder <jrnieder@gmail.com>]

Nguyễn Thái Ngọc Duy wrote:

> --internal-cwd is obvious, no way else to expose it for testing.
>
> --internal-git-dir is introduced because --git-dir prepares its output
> suitable for scripting. For tests, it must be exactly what git stores.

Hmm.  Forget this is used in tests, would it make sense to do this
with trace_printf, at the end of setup, as in your earlier patch?

I think it might: just like the exec: lines provide context about what
command is being traced, such trace: cwd: lines would make it clearer
what paths that are being output might be referring to.

Returning to the topic of tests, is it possible to get at these
variables using an external command that is run by git?  pre-commit
hook, maybe.  Testing of other symptoms is also possible, as in
Frédéric's example.