From: "René Scharfe" <rene.scharfe@lsrfire.ath.cx>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
"Git Mailing List" <git@vger.kernel.org>,
"Junio C Hamano" <gitster@pobox.com>,
schnhrr@cs.tu-berlin.de
Subject: Re: [PATCH nd/wildmatch] Correct Git's version of isprint and isspace
Date: Wed, 14 Nov 2012 20:30:36 +0100 [thread overview]
Message-ID: <50A3F15C.7000200@lsrfire.ath.cx> (raw)
In-Reply-To: <CA+55aFynRG-CbSp-aLoo1iZTvfBWMgt6kwrPiQjSZJ0ZzraDKQ@mail.gmail.com>
Am 13.11.2012 20:50, schrieb Linus Torvalds:
> On Tue, Nov 13, 2012 at 11:40 AM, Linus Torvalds
> <torvalds@linux-foundation.org> wrote:
>>
>> I have to wonder why you care? As far as I'm concerned, the only valid
>> space is space, TAB and CR/LF.
>>
>> Anything else is *noise*, not space. What's the reason for even caring?
>
> Btw, expanding the whitespace selection may actually be very
> counter-productive. It is used primarily for things like removing
> extraneous space at the end of lines etc, and for that, the current
> selection of SPACE, TAB and LF/CR is the right thing to do.
>
> Adding things like FF etc - that are *technically* whitespace, but
> aren't the normal kind of silent whitespace - is potentially going to
> change things too much. People might *want* a form-feed in their
> messages, for all we know.
The patch was motivated by the integration of the wildmatch library,
which exposes named character classes to users. It replaces a call of
fnmatch in match_pathname. Users probably expect [:space:] to mean the
same in git as in other programs.
I never saw a vertical tab and I can't imagine what it's used for. I'd
expect form-feeds to be matched as space, though. Didn't see them very
often, admittedly.
Nevertheless, it's unfortunate that we have an isspace() that *almost*
does what the widely known thing of the same name does. I'd shy away
from changing git's version directly, because it's used more than a
hundred times in the code, and estimating the impact of adding \v and \f
to it. Perhaps renaming it to isgitspace() is a good first step,
followed by adding a "standard" version of isspace() for wildmatch?
René
next prev parent reply other threads:[~2012-11-14 19:30 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-14 2:34 [PATCH v5 00/12] nd/wildmatch Nguyễn Thái Ngọc Duy
2012-10-14 2:34 ` [PATCH v5 01/12] ctype: make sane_ctype[] const array Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 02/12] ctype: support iscntrl, ispunct, isxdigit and isprint Nguyễn Thái Ngọc Duy
2012-10-14 5:02 ` Junio C Hamano
2012-10-14 5:07 ` Nguyen Thai Ngoc Duy
2012-10-14 12:59 ` René Scharfe
2012-10-14 13:25 ` Nguyen Thai Ngoc Duy
2012-10-14 13:59 ` René Scharfe
2012-10-14 14:26 ` Nguyen Thai Ngoc Duy
2012-10-17 12:09 ` "Jan H. Schönherr"
2012-10-17 12:26 ` Nguyen Thai Ngoc Duy
2012-11-13 10:46 ` [PATCH nd/wildmatch] Correct Git's version of isprint and isspace Nguyễn Thái Ngọc Duy
2012-11-13 18:58 ` "Jan H. Schönherr"
2012-11-13 19:14 ` René Scharfe
2012-11-13 19:15 ` René Scharfe
2012-11-13 19:40 ` Linus Torvalds
2012-11-13 19:50 ` Linus Torvalds
2012-11-14 19:30 ` René Scharfe [this message]
2012-11-13 19:41 ` Johannes Sixt
2012-11-15 12:19 ` [PATCH] wildmatch: correct " Nguyễn Thái Ngọc Duy
2012-11-15 17:13 ` "Jan H. Schönherr"
2012-11-16 4:19 ` Nguyen Thai Ngoc Duy
2012-10-14 2:35 ` [PATCH v5 03/12] Import wildmatch from rsync Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 04/12] wildmatch: remove unnecessary functions Nguyễn Thái Ngọc Duy
2012-10-14 5:04 ` Junio C Hamano
2012-10-14 6:29 ` Nguyen Thai Ngoc Duy
2012-10-14 2:35 ` [PATCH v5 05/12] Integrate wildmatch to git Nguyễn Thái Ngọc Duy
2012-10-14 5:06 ` Junio C Hamano
2012-10-14 11:07 ` Torsten Bögershausen
2012-10-14 2:35 ` [PATCH v5 06/12] t3070: disable unreliable fnmatch tests Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 07/12] wildmatch: make wildmatch's return value compatible with fnmatch Nguyễn Thái Ngọc Duy
2012-10-14 5:09 ` Junio C Hamano
2012-10-14 2:35 ` [PATCH v5 08/12] wildmatch: remove static variable force_lower_case Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 09/12] wildmatch: fix case-insensitive matching Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 10/12] wildmatch: adjust "**" behavior Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 11/12] wildmatch: make /**/ match zero or more directories Nguyễn Thái Ngọc Duy
2012-10-14 2:35 ` [PATCH v5 12/12] Support "**" wildcard in .gitignore and .gitattributes Nguyễn Thái Ngọc Duy
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