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unnamed-faq-70
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     To: Bik.Dhaliwal@bis.org
     Subject: Re: Flex question
     In-reply-to: Your message of Mon, 26 Jan 1998 13:05:35 PST.
     Date: Tue, 27 Jan 1998 22:41:52 PST
     From: Vern Paxson <vern>
     
     > That requirement involves knowing
     > the character position at which a particular token was matched
     > in the lexer.
     
     The way you have to do this is by explicitly keeping track of where
     you are in the file, by counting the number of characters scanned
     for each token (available in yyleng).  It may prove convenient to
     do this by redefining YY_USER_ACTION, as described in the manual.
     
     		Vern