Re: [PATCH v2] upload-pack.c: use of parse-options API

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

Matthieu Moy <matthieu.moy@grenoble-inp.fr> writes:

>> +	if (argc != 1)
>> +		usage_with_options(upload_pack_usage, options);
>>  
>> -	setup_path();
>> +	if (timeout)
>> +		daemon_mode = 1;
>>  
>> -	dir = argv[i];
>> +	setup_path();
>>  
>> +	dir = argv[0];
>
> Not a problem with your code, but the patch shows "setup_path()"
> as moved while it is not really. Maybe using "send-email
> --patience" or some other diff option could make the patch nicer.

Encouraging use of "send-email" with "--patience" is a losing
approach if your goal is to present more reviewable diff, isn't it?
Using "send-email" as if it is a front-end of "format-patch" means
you lose the opportunity for the final proof-reading (not just
finding typoes in the message, but the shape of diff, like you are
pointing out).

Using "format-patch --patience" or some other diff option, and pick
the best one to give to "send-email" would indeed be a way to do so.

> Not really important as it does not change the final state.

I wondered if this is an example of real-world fallout from
0018da1^2~1 (xdiff: implement empty line chunk heuristic,
2016-04-19), but it does not seem to be so.

What is happening is that Antoine's patch (which is slightly
different from what you quoted above) has trailing whitespace after
"setup_path();", so it indeed is the original setup_path(); is
removed, a few lines were inserted, argv[i] reference is removed
and then a totally different "setup_path();	" was added there.

With that whitespace-breakage corrected, the resulting patch ends
more like this:

+	if (argc != 1)
+		usage_with_options(upload_pack_usage, options);
 
-	if (i != argc-1)
-		usage(upload_pack_usage);
+	if (timeout)
+		daemon_mode = 1;
 
 	setup_path();
 
-	dir = argv[i];
-
+	dir = argv[0];
 	if (!enter_repo(dir, strict))
 		die("'%s' does not appear to be a git repository", dir);
 
which is more reasonable.

So in the end, this was not "Not a problem with your code" ;-) It
was.