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<DIV><FONT face=Verdana color=#c0c0c0 size=2>2007-11-22 </FONT></DIV><FONT
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<DIV><FONT face=Verdana color=#c0c0c0 size=2><SPAN>serva</SPAN>
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<DIV><FONT face=Verdana size=2><STRONG>发件人：</STRONG> Olle E Johansson
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<DIV><FONT face=Verdana size=2><STRONG>发送时间：</STRONG> 2007-11-21 18:18:55
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<DIV><FONT face=Verdana size=2><STRONG>收件人：</STRONG> Asterisk Developers Mailing
List </FONT></DIV>
<DIV><FONT face=Verdana size=2><STRONG>抄送：</STRONG> </FONT></DIV>
<DIV><FONT face=Verdana size=2><STRONG>主题：</STRONG> Re: [asterisk-dev] dialplan
redesign - don't forget characters (Newtopic) </FONT></DIV>
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<DIV><FONT face=Verdana size=2>
<DIV>21 nov 2007 kl. 10.01 skrev Luigi Rizzo:</DIV>
<DIV> </DIV>
<DIV>> On Wed, Nov 21, 2007 at 09:28:55AM +0100, Olle E Johansson wrote:</DIV>
<DIV>> > ></DIV>
<DIV>> >
> Really, this is not an area where you can afford playing and putting</DIV>
<DIV>> > > in</DIV>
<DIV>> >
> small patches to see how they fix one or the other problem.</DIV>
<DIV>> >
> The correctness of extension matching is something that people</DIV>
<DIV>> >
> really must rely on, because in the end it is directly involved</DIV>
<DIV>> >
> with security, billing and so on.</DIV>
<DIV>> > ></DIV>
<DIV>>
> One thing that has to be considered as well if we redesign is</DIV>
<DIV>> > alphanumeric</DIV>
<DIV>></DIV>
<DIV>> There is nothing preventing alphanumeric extensions at least in the</DIV>
<DIV>> old matching algorithm - the only annoyance is the need to 'escape'</DIV>
<DIV>> some characters ( _ N Z X / come to mind ) as [N] [Z] etc. to</DIV>
<DIV>> override their special meaning on asterisk patterns.</DIV>
<DIV>Well, you can't properly match 謘tert鋖je@myasterisk.com today.</DIV>
<DIV>Or give ranges like [A-謁xp[0-3]</DIV>
<DIV> </DIV>
<DIV>> But then, this is trivial to overcome by providing an alternative</DIV>
<DIV>> syntax for extensions (and supporting both in parallel is easy)</DIV>
<DIV>> and besides all regexp implementations have their own special </DIV>
<DIV>> characters.</DIV>
<DIV>That was our proposal. Let's find a URL so you can check it.</DIV>
<DIV><A
href="http://edvina.net/asterisk/alphanumericextensions.pdf">http://edvina.net/asterisk/alphanumericextensions.pdf</A></DIV>
<DIV> </DIV>
<DIV>May 2005 :-)</DIV>
<DIV> </DIV>
<DIV>TTT - Things Take Time...</DIV>
<DIV> </DIV>
<DIV>/O</DIV>
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