Re: [PATCH 1/8] sha1-array: provide oid_array_filter

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On Wed, Sep 26 2018, Junio C Hamano wrote:

> Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> writes:
>
>> On Wed, Sep 26 2018, Junio C Hamano wrote:
>>
>>> Jeff King <peff@xxxxxxxx> writes:
>>>>
>>>> Yes, please. I think it prevents exactly this sort of confusion. :)
>>>
>>> CodingGuidelines or SubmittingPatches update, perhaps?
>>>
>>>  Documentation/CodingGuidelines | 6 +++++-
>>>  1 file changed, 5 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines
>>> index 48aa4edfbd..b54684e807 100644
>>> --- a/Documentation/CodingGuidelines
>>> +++ b/Documentation/CodingGuidelines
>>> @@ -358,7 +358,11 @@ For C programs:
>>>     string_list for sorted string lists, a hash map (mapping struct
>>>     objects) named "struct decorate", amongst other things.
>>>
>>> - - When you come up with an API, document it.
>>> + - When you come up with an API, document it.  It used to be
>>> +   encouraged to do so in Documentation/technical/, and the birds-eye
>>> +   level overview may still be more suitable there, but detailed
>>> +   function-by-function level of documentation is done by comments in
>>> +   corresponding .h files these days.
>>>
>>>   - The first #include in C files, except in platform specific compat/
>>>     implementations, must be either "git-compat-util.h", "cache.h" or
>>
>> Thanks. I had not looked at this closely and was under the false
>> impression that it was going in the other direction. Good to have it
>> clarified.
>
> Heh, I knew people were in favor of one over the other but until
> Peff chimed in to this thread, I didn't recall which one was
> preferred, partly because I personally do not see a huge advantage
> in using in-code comments as docs for programmers, and do not like
> having to read them as in-code comments.
>
> If somebody wants to wordsmith the text and send in a patch with
> good log message, please do so, as I myself am not sure if what I
> wrote is the consensus position.  It could be that they want to have
> even birds-eye overview in the header files.

While we're on that subject, I'd much prefer if these technical docs and
other asciidoc-ish stuff we would be manpages build as part of our
normal "make doc" target. So e.g. this one would be readable via
something like "man 3 gitapi-oid-array".

They could still be maintained along with the code given a sufficiently
smart doc build system, e.g. perl does that:
https://github.com/Perl/perl5/blob/v5.26.0/av.c#L294-L387

Although doing that in some readable and sane way would mean getting rid
of your beloved multi-line /* ... */ comment formatting, at least for
that case. It would be a pain to have everyone configure their editor to
word-wrap lines with leading "*" without screwing up the asciidoc
format.



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