Re: [PATCH v3 2/2] Reduce parse-options.o dependencies

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

Jonathan Nieder <jrnieder@gmail.com> writes:

>> diff --git a/parse-options-cb.c b/parse-options-cb.c
>> new file mode 100644
>> index 0000000..c248f66
>> --- /dev/null
>> +++ b/parse-options-cb.c
>> @@ -0,0 +1,125 @@
>> +#include "git-compat-util.h"
>> +#include "parse-options.h"
>> +#include "cache.h"
>
> Style: Files in git tend to use only one of "git-compat-util.h",
> "cache.h", or "builtin.h" and put it at the top.  So in this case, it
> should probably use just "cache.h".

This needs a bit of clarification.

The compatibility rule actually is to have git-compat-util.h at the very
beginning. As cache.h is a very widely used header almost everybody that
needs to access the internals include, it includes git-compat-util.h as
its first thing to include.

So if this is an old file that existed before git-compat-util.h, then it
is perfectly fine to start it with

	#include "cache.h"
        #include "parse-options.h"

Otherwise the three-line include above is also just fine.