$text =~ s/<%(.+?)%>/$vars->{$1}/g || warn("unable to substitute $1");

This statement is puzzling. If zero substitutions are done, two warnings are emitted (assuming you have warnings enabled). What is the purpose of printing  $1 when it is undefined?

Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Invoke the Perl string interpolation engine on a string contained in a scalar variable. by AnomalousMonk
in thread Invoke the Perl string interpolation engine on a string contained in a scalar variable. by ibm1620

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