The desire to format or lint code throughout history has arisen several
times. It's more natural to do this in filter-branch since it somewhat
forces people to run external commands, but we have an example contrib
demo that shows how to run an external command on each file in history
that I created even before any of these requests came in and yet I still
periodically get requests about it.
Make lint-history ever-so-slightly easier to apply to a subset of
filenames, and include its usage as an extra cheat sheet comparison for
filter-branch-vs-filter-repo commands.
Signed-off-by: Elijah Newren <newren@gmail.com>
