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flex: Trailing context is getting confused with trailing optional patterns

 
 Trailing context is getting confused with trailing optional patterns
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      To: Adoram Rogel <adoram@hybridge.com>
      Subject: Re: Flex 2.5.4 BOF ???
      In-reply-to: Your message of Tue, 26 Nov 1996 16:10:41 PST.
      Date: Wed, 27 Nov 1996 10:56:25 PST
      From: Vern Paxson <vern>
      
      >     Organization(s)?/[a-z]
      >
      > This matched "Organizations" (looking in debug mode, the trailing s
      > was matched with trailing context instead of the optional (s) in the
      > end of the word.
      
      That should only happen with lex.  Flex can properly match this pattern.
      (That might be what you're saying, I'm just not sure.)
      
      > Is there a way to avoid this dangerous trailing context problem ?
      
      Unfortunately, there's no easy way.  On the other hand, I don't see why
      it should be a problem.  Lex's matching is clearly wrong, and I'd hope
      that usually the intent remains the same as expressed with the pattern,
      so flex's matching will be correct.
      
      		Vern
 

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