Re: what should "git clean -n -f [-d] [-x] <pattern>" do?

> Junio C Hamano <gitster@pobox.com> writes:
>
>> Sergey Organov <sorganov@gmail.com> writes:
>>
>>> Now we are going to introduce "dry run" option "-n". Most simple and
>>> obvious way to do it is to set internal flag "dry_run" and then at every
>>> invocation of "remove(file_name)" put an if(dry_run) that will just
>>> print(file_name) instead or removing it. Let's suppose we did just that.
>>> We get this behavior:
>>>
>>>   $ git clean -n
>>>   fatal: clean.requireForce defaults to true and neither -i nor -f given; refusing to clean
>>>   $ git clean -f -n
>>>   would remove "a"
>>>   would remove "b"
>>>   $ git clean -f -f -n
>>>   would remove "a"
>>>   would remove "b"
>>>   would remove "sub/a"
>>>   $
>>>
>>> I see this as logical, clean, and straightforward behavior, meeting user
>>> expectations for "dry run" option, so I suggest to do just that.
>>
>> I think we are saying the same thing.  If the original semantics
>> were "you must force with -f to do anything useful", instead of "you
>> must choose either forcing with -f or not doing with -n", then it
>> would have led to the above behaviour.
>>
>> The thing is, it is way too late to change it that way without
>> breaking too many folks, and that is the problem.
>
> If we agree on the behavior above for sane "dry run", yet you worry
> about backward compatibility so much to deny changing the behavior of
> "-n", then a way to go could be to introduce, say, "-d" for sane "dry
> run", and obsolete "-n" while keeping it alone.