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Date: Mon, 2 Aug 2010 08:13:25 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: error in JTR rules

On Sat, Jul 31, 2010 at 11:09:07PM +0200, websiteaccess@...il.com wrote:
>  In the tutorial abour rules, I can read :
> 
>  (?C	reject the word unless its first character is in class C
> 
>  In my opinion, the right syntax is (?c

You're misreading the documentation.  By using an uppercase letter in
the documentation line you quoted, it does not imply that you should be
using an uppercase letter in your rules (which would correspond to the
complement of the class).  It is merely an "identifier" used in the
documentation, which similarly uses uppercase "identifiers" elsewhere.
To change this to a lowercase letter in the documentation would be OK,
but it would not help avoid a misunderstanding: then one could
similarly think that they have to use a lowercase letter, which they
actually don't.  A lower- or uppercase class "name" letter should be
used depending on one's needs.

Alexander

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