Bruce,
There are two ways to use the interesting new pattern type. The ?? operator
starts a new string scanning environment to evaluate a pattern.
The unary = operator has been extended to accept a pattern argument, and
matches it at the position within the current string scanning environment. So
the answer to your question is yes ... for the =p operator. The s??p operator
resets the position to 1 to do its job, and restores the current scanning
environment after it is finished.
Clint
________________________________
From: Bruce & Breeanna Rennie <bren...@dcsi.net.au>
Sent: Sunday, April 16, 2017 6:39:25 AM
To: Unicon group
Subject: [Unicon-group] Question regarding pattern matching
Good evening to all,
Just a simple question, which doesn't appear to be answered in UTR18.
Are &subject and &pos the basis on which pattern matching is done? Can
we set &pos to be at any valid position within the pattern?
regards
Bruce Rennie
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