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

[Junio C Hamano <gitster@pobox.com>]

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

> Hi Junio,
>
> On Tue, 25 Aug 2020, Junio C Hamano wrote:
>
>> 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.
>
> It might be a good idea to also instrument the existing scripts, to show
> the same warning unless they were called through the `git` binary.
>
> _If_ we were to do this ;-)

Sure.  

I am not the advocate for removing builtins from on-disk, though.
The burden of proof... ;-)