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perlop: Clarify empty pattern section not valid for qr// #23411

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perlop: Clarify empty pattern section not valid for qr// #23411

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2 changes: 2 additions & 0 deletions pod/perlop.pod
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Expand Up @@ -2272,6 +2272,8 @@ The bottom line is that using C</o> is almost never a good idea.

=item The empty pattern C<//>

(This subsection applies to C<//> and C<m//>, but not to C<qr//>.)

If the I<PATTERN> evaluates to the empty string, the last
I<successfully> matched regular expression in the current dynamic
scope is used instead (see also L<perlvar/Scoping Rules of Regex Variables>).
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