From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 23 Apr 2020 22:11:25 GMT
Subject: Re: [PATCH 2/3] credential: teach `credential_from_url()` a non-strict mode
Message-ID: <xmqqy2qlette.fsf@gitster.c.googlers.com>
In-Reply-To: <nycvar.QRO.7.76.6.2004232359120.18039@tvgsbejvaqbjf.bet>

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

> Yes (modulo doing "greater than" comparison on pointers which is IIRC not
> permitted in C in general).

Of course, people write a loop like this

	char *cp, *ep = strchr(string, '\n');

	for (cp = string; cp < ep; cp++)
		...

all the time, and forbidding pointer comparison would make the
language impossible to use ;-)

I think you are confused with a different rule---what is not kosher
is to compare two pointers that do not point into elements of the
same array.  Whether the comparison is done in (ptr1 < ptr2) way, or
(ptr2 - ptr1 < 0) way, does not change the equation.