[Mimedefang] MIMEDefang 2.52 is release Question

[Kevin A. McGrail]

Ahh.  I read this as something IN a regular exp i.e. =~ /$'/.   I didn't
understand the $' perlvar nuance.  Thanks

KAM

> > What does $` and $' do in a regexp?
>
> "man perlvar", which states among other things:
>
>        The use of this variable anywhere in a program imposes a con-
>        siderable performance penalty on all regular expression
>        matches.  See "BUGS".