(W ambiguous) You said something like C<m/$\/> in a regex.
The regex C<m/foo$\s+bar/m> translates to: match the word 'foo', the output
-record separartor (see L<perlvar/$\>) and the letter 's' (one time or more)
+record separator (see L<perlvar/$\>) and the letter 's' (one time or more)
followed by the word 'bar'.
If this is what you intended then you can silence the warning by using