[Exim] rewrite rule and S flag

Hello!

When I'v set this rewrite rule:
*@*     ${lookup{$0}lsearch{/usr/local/etc/exim/rewriting}{$value}}     S

I'v got a message: rewrite rule has the S flag but is not a regular
expression

*@* is not regular expression?

PS Exim 4.12

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Sem.