Perl5 リファレンス



       pos SCALAR

       pos     Returns the offset of where the last `m//g' search
               left off for the variable is in question (`$_' is
               used when the variable is not specified).  May be
               modified to change that offset.  Such modification
               will also influence the `\G' zero-width assertion
               in regular expressions.  See the perlre manpage
               and the perlop manpage.


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