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Date:	Tue, 8 Dec 1992 23:28:27 -0500
From:	Paul Haahr <haahr@mv.us.adobe.com>
Message-Id: <9212090428.AA08969@utopia.mv.us.adobe.com>
To:	schwartz@groucho.cs.psu.edu
Subject: Re: regexps
Cc:	sam-fans@hawkwind.utcs.toronto.edu

beginning of word:      (^|[^a-zA-Z0-9])
end of word:            ($|[^a-zA-Z0-9])

'course, you still have to narrow dot by one then.  your definition of 
word may be different from mine, of course, so, maybe
        (^|[ \t]) and ($|[ \t])
would be more appropriate.  (i don't think sam takes \t, but it's
much clearer for purposes of the example.)