Re: [PATCH 0/8] submodule: tests, cleanup to prepare for built-in

> I have a topic on-list to remove git-submodule.sh and create a
> builtin/submodule.c, i.e. promoting "git submodule--helper" to the
> "real thing"[1].
>
> Glen gave me a bunch of good feedback on it, including (but not
> limited to) pointing out that we have outstanding dead code in
> [2][3].
>
> Once I started pulling at that thread things became a lot simpler for
> the re-roll of [1], e.g. the migration of git-submodule.sh's commands
> can squash in the "update" step, as it's no longer a special-case.
>
> But that also made the series larger, and it's conflicted with other
> outstanding patches. First René's strvec() cleanup in submodule.c, and
> currently with Glen's in-flight submodule topic.
>
> So here's "just the prep" part of that split-out. See also [4] and [5]
> for previous "prep" topics, we're getting closer...
>
> This only adds missing test coverage, and deletes dead code that we'd
> otherwise have to account for. Then 8/8 converts submodule--helper to
> use the OPT_SUBCOMMAND() API in 8/8.