same as the associated hash key. If none of these buffers were involved in
the match, the contents of that array ref will be as many C<undef> values
as there are capture buffers with that name. In other words, the tied hash
-will behave as the C<%-> array.
+will behave as C<%->.
When the C<all> parameter is omitted or false, then the tied hash elements
will be the contents of the leftmost defined buffer with the name of the
-associated hash key. In other words, the tied hash will behave as the
-C<%+> array.
+associated hash key. In other words, the tied hash will behave as
+C<%+>.
The keys of C<%->-like hashes correspond to all buffer names found in the
regular expression; the keys of C<%+>-like hashes list only the names of