Re: [PATCH v7 0/9] submodule: improve robustness of path handling

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On Tue, May 29, 2012 at 6:07 AM, Jens Lehmann <Jens.Lehmann@xxxxxx> wrote:
> Am 27.05.2012 17:34, schrieb Jon Seymour:
>> This series improves the robustness of path handling by 'git submodule' by:
>>
>> * detecting submodule URLs that will result in non-sensical submodule origin URLs
>>
>> * improving handling of various kinds of relative superproject origin URLs
>>
>> * improving handling of various kinds of denormalized superproject origin URLs
>
> Hmm, this has become a quite invasive patch series. While I bought the
> use case of having a superproject with a relative url and was inclined
> to accept that it might even not start "./" or "../" (even though that
> is a pretty unusual use and can be easily fixed by prepending a "./"),
> I'm not sure the in depth check of URLs is worth the code churn. And
> especially the high probability of breaking other peoples use cases in
> rather subtle ways worry me (this did happen quite often when the
> submodule script was changed in the past; as an example take the
> windows path issues Johannes already pointed out in his email). And I
> can't remember bug reports that people complained about URL problems
> due to the issues you intend to fix here, which makes me think they
> might be well intended but possibly unnecessary (but my memory might
> server me wrong here).
>
> So I'd vote for just fixing the relative submodule path issues and to
> not care about the possible issues with URLs. Opinions?

I'll write a minimal patch to solve my relative path problem without
fixing the invalid/"greedy" submodule url or url normalization issues.

The reason I went with a more extensive series is that the change in
6/9 considerably simplified the change I wanted to make in 7/9 while
at the same time making the path handling of resolve_relative_url more
precise, in the sense documented by the tests in 2/9.

The refactoring in 5/9 and the changes in 8/9 and 9/9 are related to
renormalization which I realised was a weakness (if not a problem
people were complaining about) in the original code as documented by
the tests in 4/9.

Do you have any comments about whether the failures documented in 2/9
and 4/9 are worth noting, at least, as weaknesses?

>
> (And patches 6-8 contain changes to test cases other than just changing
> test_expect_failure to test_expect_success which makes reviewing this
> series unnecessarily hard)

Agree absolutely about patch 8 - I will re-roll with separate tests to
document the test setup issue I fixed in 8.

The only other changes to tests in 6 and 7 were the removal of
comments about the actual bad behaviour. Would your preference be that
I removed these #actual comments completely or that I moved
documentation of the actual behaviour to the header of the test?

jon.
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