On 9/10/16, Junio C Hamano <gits...@pobox.com> wrote:
> The clean and smudge operations should look _only_ at the contents
> they are filtering, and nothing else, and the clean/smudge filtering
> mechanism is designed to support that use case.  It is not designed
> to do things like embedding the name of the branch that is being
> checked out into the result.

Ok, I think I get it. It was actually my original problem with smudge
filters because I wanted them to be run after *every* checkout even if
file contents stayed the same (hence the subject).

Now Jakub suggested post-checkout hook in conjunction with only clean
filter for my problem of managing dotfiles but I think I don't fully
get it.  The problem is that in the scenario presented in my last
e-mail clean filter is run in the situation which doesn't like a
checkin to me.  Is `git checkout <PATH>' doing a *checkin*" under the
hood so that the clean filter is called?  What does actually `checkin'
mean in Git?  I thought that checkin it's the same as committing a
file into the repository.


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