Re: [PATCH] pathspec: remove check_path_for_gitlink

Junio C Hamano [off-list ref] writes:

When deep/in/ is an unrelated repository, and running either

    git add deep/in/the
    git add deep/in/the/tree

would add deep/in/the/tree/is-a-leaf.txt to my index, but if I did

    git add deep/in

I'd lose that and suddenly everything there turns into a submodule.

Also, I recall that you floated an idea to declare that

    git add deep/in/the/tree/is-a-leaf.txt

must always behave as if this is done instead:

    git -C deep/in/the/tree/ add is-a-leaf.txt

Even though I am not a huge fan of an operation that crosses module
boundaries, I think that is a sensible semantics of a "cross module
boundary operation" (the actual implementation should not be
iterating over pathspecs and chdir(2)ing around for each and every
one of them, though), if we need "cross module boundary operation"
in order to support end users working on a project with one or more
submodules at the same time.

But treating the bug under discussion as a "feature" will destroy
that future.