From: Alexey Tourbin <at@altlinux.ru>
To: ALT Linux Team development discussions <devel@lists.altlinux.org>
Subject: Re: [devel] Q: Проверка спека на присутствие макроса.
Date: Tue, 12 Aug 2008 02:15:33 +0400
Message-ID: <20080811221533.GD618@altlinux.org> (raw)
In-Reply-To: <48A0B69B.4020808@solin.spb.ru>
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On Tue, Aug 12, 2008 at 02:00:59AM +0400, Aleksey Avdeev wrote:
> Alexey Tourbin пишет:
> >On Tue, Aug 12, 2008 at 01:48:36AM +0400, Aleksey Avdeev wrote:
> >> Решая задачу проверки использования
> >> (не объявления) макроса в спеке
> >> нарисовал такое регулярное выражение
> >>(для egrep):
> >>
> >>'%(<макрос>($|[^[:alnum:]_])|([{](<макрос>[}]|(|!)\?<макрос>[:}])))'
> >>
> >> Вопросы:
> >>
> >>1. Все ли случаи я учёл?
> >
> >%% работает как escape для %.
>
> Тогда:
>
> '(^|[^%])%(a_b($|[^[:alnum:]_])|([{](a_b[}]|(|!)\?a_b[:}])))'
Контрпример: %%%_libdir. Если привязываться регулярным выражением
к первому "%", то потребуется неограниченный look-behind: значащему
знаку "%" должно предшествовать четное количетво знаков "%".
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next prev parent reply other threads:[~2008-08-11 22:15 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-11 21:48 Aleksey Avdeev
2008-08-11 21:56 ` Alexey Tourbin
2008-08-11 21:58 ` Aleksey Avdeev
2008-08-11 22:07 ` Alexey Tourbin
2008-08-11 22:00 ` Aleksey Avdeev
2008-08-11 22:15 ` Alexey Tourbin [this message]
2008-08-11 22:27 ` Aleksey Avdeev
2008-08-11 22:37 ` Alexey Tourbin
2008-08-11 22:52 ` Aleksey Avdeev
2008-08-11 22:01 ` Alexey I. Froloff
2008-08-11 22:21 ` Aleksey Avdeev
2008-08-12 7:46 ` Igor Vlasenko
2008-08-12 8:50 ` Aleksey Avdeev
2008-08-18 7:51 ` Michael Shigorin
2008-08-18 13:15 ` Aleksey Avdeev
2008-08-19 4:16 ` Ildar Mulyukov
2008-08-19 8:12 ` Michael Shigorin
2008-08-19 8:50 ` Alexey I. Froloff
2008-08-19 8:42 ` Aleksey Avdeev
2008-08-19 8:46 ` Mikhail Gusarov
2008-08-19 8:51 ` Aleksey Avdeev
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