Re: [PATCH v1 3/3] git: catch an attempt to run "git-foo"

> If we were to propose removing "git-foo" binaries from the
> filesystem for built-in commands, we should first see if there are
> users who will be affected by such a move.  When cmd_main() detects
> we were called not as "git", but as "git-foo", give an error message
> to ask the user to let us know and stop our removal plan, unless we
> are running a selected few programs that MUST be callable in the
> dashed form (e.g. "git-upload-pack").
>
> Those who are always using "git foo" form will not be affected, but
> those who trusted the promise we made to them 12 years ago that by
> prepending the output of $(git --exec-path) to the list of
> directories on their $PATH, they can safely keep writing
> "git-cat-file" will be negatively affected as all their scripts
> assuming the promise will be kept are now broken.