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From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: bunk@kernel.org
Cc: pavel@ucw.cz, torvalds@linux-foundation.org,
	darwish.07@gmail.com, casey@schaufler-ca.com,
	akpm@linux-foundation.org, linux-security-module@vger.kernel.org,
	linux-kernel@vger.kernel.org, viro@ftp.linux.org.uk
Subject: Re: [PATCH] Smackv10: Smack rules grammar + their stateful parser
Date: Tue, 6 Nov 2007 23:32:15 +0900
Message-ID: <200711062332.DFH35933.FtQLMSOOOVHJFF@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <20071106135845.GJ26163@stusta.de>

Hello.

Adrian Bunk wrote:
> And \* is not a replacement for \?. It's quite common to have both ways 
> to express "one character" and to express "at least one character", and 
> both have their use cases and will get used if available.
You can use \? to represent "one character" and
\?\* to represent "at least one character".

> But the problem is that in your code you only match one byte for \?, 
> and this might or might not be equal to one character.
"one byte" is almost equal to "one character".
"\?" matches to one of the following types.

*  1 ASCII printable character (for 0x21-0x2E or 0x30-0x5B or 0x5D-0x7E)
*  2 ASCII printable characters \\ (for 0x5C, which means single "\")
*  4 ASCII printable characters \ooo (for 0x01-0x20 or 0x7F-0xFF, where "ooo" is octal value)

These 3 types represents one *byte*.
I want to say "\? matches to one character",
but since expression of a character depends on the value of that byte,
I'm saying "\? matches to one *byte* character" instead.
Well, this sentence might be confusing, but how can I express more accurately?

Thanks.


  reply index

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-02 20:50 [PATCH] Version 10 (2.6.24-rc1) Smack: Simplified Mandatory Access Control Kernel Casey Schaufler
2007-11-03 16:43 ` [PATCH] Smackv10: Smack rules grammar + their stateful parser Ahmed S. Darwish
2007-11-03 18:30   ` Kyle Moffett
2007-11-03 22:12     ` Ahmed S. Darwish
2007-11-04 12:28   ` Pavel Machek
2007-11-04 13:23     ` Ahmed S. Darwish
2007-11-04 16:37       ` Casey Schaufler
2007-11-05  9:41     ` Ahmed S. Darwish
2007-11-05 16:21       ` Linus Torvalds
2007-11-05 21:56         ` Tetsuo Handa
2007-11-06 10:00           ` Adrian Bunk
2007-11-06 12:27             ` Tetsuo Handa
2007-11-06 13:58               ` Adrian Bunk
2007-11-06 14:32                 ` Tetsuo Handa [this message]
2007-11-06 14:59                   ` Adrian Bunk
2007-11-06 15:27                     ` Tetsuo Handa
2007-11-06 22:42                       ` Adrian Bunk
2007-11-05 23:38         ` Ahmed S. Darwish
2007-11-06  8:06         ` Adrian Bunk
2007-11-06 15:39           ` Linus Torvalds
2007-11-06 23:00             ` Adrian Bunk
2007-11-06 23:08               ` Linus Torvalds
2007-11-07  0:07                 ` Adrian Bunk
2007-11-07  0:27                   ` Linus Torvalds
2007-11-07  0:43                     ` Adrian Bunk
2007-11-07  1:03                       ` Tetsuo Handa
2007-11-07  1:06                       ` Linus Torvalds
2007-11-07  1:59                         ` Adrian Bunk
2007-11-07  4:09                           ` Linus Torvalds
2007-11-07 15:08                           ` Alan Cox
2007-11-04 20:06   ` Ahmed S. Darwish
2007-11-05  0:56   ` [PATCH] Smackv10: Smack rules grammar + their stateful parser(2) Ahmed S. Darwish
2007-11-10 17:05     ` Jakob Oestergaard
2007-11-10 19:45       ` Ahmed S. Darwish
2007-11-11 12:44     ` Pavel Machek
2007-11-11 18:37       ` Ahmed S. Darwish
2007-11-06  6:33   ` [PATCH] Smackv10: Smack rules grammar + their stateful parser Adrian Bunk
2007-11-06  8:26     ` Kyle Moffett
2007-11-06  8:56       ` Adrian Bunk
2007-11-06 11:02         ` Alan Cox
2007-11-06 11:34         ` Ahmed S. Darwish
2007-11-06 11:47           ` Adrian Bunk
2007-11-06 12:23             ` Ahmed S. Darwish
2007-11-06 12:49               ` Kyle Moffett
2007-11-06 13:34                 ` Adrian Bunk
2007-11-06 14:05                   ` Ahmed S. Darwish
2007-11-06 14:10                     ` Adrian Bunk
2007-11-06 14:30                       ` Ahmed S. Darwish
2007-11-06 15:53                 ` Linus Torvalds
2007-11-07 10:56                   ` [PATCH] Fix isspace() and other ctype.h functions to ignore chars 128-255 Kyle Moffett

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