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From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: Junio C Hamano <gitster@pobox.com>
Cc: "Ramsay Jones" <ramsay@ramsayjones.plus.com>,
	"Torsten Bögershausen" <tboegi@web.de>,
	git@vger.kernel.org, "Eric Sunshine" <sunshine@sunshineco.com>
Subject: Re: [PATCH v4 4/4] t0060: verify that basename() and dirname() work as expected
Date: Wed, 13 Jan 2016 19:53:58 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.2.20.1601131953010.2964@virtualbox> (raw)
In-Reply-To: <xmqqh9ihpfav.fsf@gitster.mtv.corp.google.com>

Hi Junio,

On Wed, 13 Jan 2016, Junio C Hamano wrote:

> Ramsay Jones <ramsay@ramsayjones.plus.com> writes:
> 
> > This particular section documents what is almost certainly a bug
> > in the cygwin basename() and also documents my choice of 'fix'.  (ie.
> > in my implementation I chose to return '/' for '//', which is one of
> > the possible options that POSIX allows.)
> > ...
> > POSIX says, in part [1]:
> >
> >     If the string pointed to by path consists entirely of the '/'
> >     character, basename() shall return a pointer to the string "/". If
> >     the string pointed to by path is exactly "//", it is
> >     implementation-defined whether '/' or "//" is returned.
> >
> > [1]
> > http://pubs.opengroup.org/onlinepubs/9699919799/functions/basename.html
> >
> > So we should expect other systems to differ, even if they support POSIX. (and maybe
> > not just this test case.)
> 
> Doesn't that mean the test shouldn't be insisting on the output
> being one that you arbitrarily pick?  It feels to me that it is
> wrong to say "We require // to become / unless we know we are on
> such and such systems".  Instead, shouldn't it be doing "We feed //
> to the function.  Either / or // is acceptable; any other value is a
> bug"?

I guess that is the best solution of all. I'll try to modify
test-path-utils.c accordingly tomorrow.

Ciao,
Dscho

  reply	other threads:[~2016-01-13 18:54 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-30 14:50 [PATCH] Provide a dirname() function when NO_LIBGEN_H=YesPlease Johannes Schindelin
2015-09-30 18:24 ` Junio C Hamano
2016-01-08 16:17   ` Johannes Schindelin
2015-09-30 18:57 ` Ramsay Jones
2016-01-08 16:18   ` Johannes Schindelin
2016-01-08 16:21 ` [PATCH v2 0/4] Ensure that we can build without libgen.h Johannes Schindelin
2016-01-08 16:21   ` [PATCH v2 1/4] Refactor skipping DOS drive prefixes Johannes Schindelin
2016-01-08 21:51     ` Eric Sunshine
2016-01-08 22:07       ` Junio C Hamano
2016-01-11  9:32         ` Johannes Schindelin
2016-01-11 15:58           ` Junio C Hamano
2016-01-08 16:21   ` [PATCH v2 2/4] compat/basename: make basename() conform to POSIX Johannes Schindelin
2016-01-08 18:45     ` Junio C Hamano
2016-01-09 14:53       ` Johannes Schindelin
2016-01-11 16:01         ` Junio C Hamano
2016-01-08 16:21   ` [PATCH v2 3/4] Provide a dirname() function when NO_LIBGEN_H=YesPlease Johannes Schindelin
2016-01-08 18:53     ` Junio C Hamano
2016-01-08 16:21   ` [PATCH v2 4/4] t0060: verify that basename() and dirname() work as expected Johannes Schindelin
2016-01-10  4:17     ` Eric Sunshine
2016-01-11 10:50       ` Johannes Schindelin
2016-01-13 18:52     ` Michael Blume
2016-01-13 19:43       ` Junio C Hamano
2016-01-14  6:09         ` Johannes Schindelin
2016-01-11 18:29   ` [PATCH v3 0/4] Ensure that we can build without libgen.h Johannes Schindelin
2016-01-11 18:29     ` [PATCH v3 1/4] Refactor skipping DOS drive prefixes Johannes Schindelin
2016-01-11 18:29     ` [PATCH v3 2/4] compat/basename: make basename() conform to POSIX Johannes Schindelin
2016-01-11 18:30     ` [PATCH v3 3/4] Provide a dirname() function when NO_LIBGEN_H=YesPlease Johannes Schindelin
2016-01-11 20:33       ` Eric Sunshine
2016-01-11 22:56         ` Junio C Hamano
2016-01-12  7:57           ` Johannes Schindelin
2016-01-11 18:30     ` [PATCH v3 4/4] t0060: verify that basename() and dirname() work as expected Johannes Schindelin
2016-01-11 22:59     ` [PATCH v3 0/4] Ensure that we can build without libgen.h Junio C Hamano
2016-01-12  7:57     ` [PATCH v4 " Johannes Schindelin
2016-01-12  7:57       ` [PATCH v4 1/4] Refactor skipping DOS drive prefixes Johannes Schindelin
2016-01-22 18:50         ` Johannes Sixt
2016-01-22 19:09           ` Junio C Hamano
2016-01-23  8:25             ` Johannes Schindelin
2016-01-23 19:02               ` Johannes Sixt
2016-01-24 10:56                 ` Johannes Schindelin
2016-01-24 12:36                   ` Johannes Sixt
2016-01-24 22:12                     ` Junio C Hamano
2016-01-25 21:47                       ` [PATCH] mingw: avoid linking to the C library's isalpha() Johannes Sixt
2016-01-25 22:04                         ` Junio C Hamano
2016-01-12  7:57       ` [PATCH v4 2/4] compat/basename: make basename() conform to POSIX Johannes Schindelin
2016-01-13  0:49         ` Ramsay Jones
2016-01-13  7:14           ` Johannes Schindelin
2016-01-12  7:57       ` [PATCH v4 3/4] Provide a dirname() function when NO_LIBGEN_H=YesPlease Johannes Schindelin
2016-01-13  0:55         ` Ramsay Jones
2016-01-13  7:40           ` Johannes Schindelin
2016-01-13 16:44             ` Ramsay Jones
2016-01-12  7:57       ` [PATCH v4 4/4] t0060: verify that basename() and dirname() work as expected Johannes Schindelin
2016-01-13  0:58         ` Ramsay Jones
2016-01-13  7:17           ` Johannes Schindelin
     [not found]         ` <5695E4FB.2060705@web.de>
2016-01-13  9:27           ` Johannes Schindelin
2016-01-13 16:46             ` Ramsay Jones
2016-01-13 16:34           ` Ramsay Jones
2016-01-13 17:20             ` Junio C Hamano
2016-01-13 18:53               ` Johannes Schindelin [this message]
2016-01-13  0:44       ` [PATCH v4 0/4] Ensure that we can build without libgen.h Ramsay Jones
2016-01-13  2:56         ` Junio C Hamano
2016-01-13  6:15           ` Torsten Bögershausen
2016-01-13  7:38             ` Johannes Schindelin
2016-01-13  7:02         ` Johannes Schindelin

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