-C<sub( $ $ )> is equivalent to C<sub($$)>. But it was stripped when the
-subroutine was parse. Hence, whitespace was I<not> allowed in prototypes
-set by C<Scalar::Util::set_prototype>. Now it is permitted, and the parser
-no longer strips whitespace. This means C<prototype &mysub> returns the
-original prototype, whitespace and all.
+C<sub( $ $ )> is equivalent to C<sub($$)>, but until now it was stripped
+when the subroutine was parsed. Hence, whitespace was I<not> allowed in
+prototypes set by C<Scalar::Util::set_prototype>. Now it is permitted,
+and the parser no longer strips whitespace. This means
+C<prototype &mysub> returns the original prototype, whitespace and all.