Pod::Elemental::Transformer::Gatherer - gather related paragraphs under a shared header

gather_selector
       This is a coderef (a predicate) used to find the paragraphs to gather up.

   container
       This is a Pod::Elemental::Node that will be inserted into the node, containing all gathered elements.

       Ricardo SIGNES <cpan@semiotic.systems>

       This software is copyright (c) 2022 by Ricardo SIGNES.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5
       programming language system itself.

perl v5.36.0                                       2023-01-05              Pod::Elemental...ormer::Gatherer(3pm)

       Pod::Elemental::Transformer::Gatherer - gather related paragraphs under a shared header

       Like the Nester transformer, this Gatherer produces structure and containment in a Pod document.  Unlike
       that Nester, it does not find top-level elements, but instead produces them.

       It looks for all elements matching the "gather_selector".  They are removed from the node.  In the place
       of the first found element, the "container" node is placed into the transformed node, and all the
       gathered elements are made children of the container.

       So, given this document:

         Document
           =head1 Foo
           =over 4
           =item * xyzzy
           =item * abcdef
           =back
           =head1 Bar
           =over 4
           =item * 1234
           =item * 8765
           =back

       ...and this nester...

         my $gatherer = Pod::Elemental::Transformer::Gatherer->new({
           gather_selector => s_command( [ qw(over item back) ] ),
           container       => Pod::Elemental::Element::Pod5::Command->new({
             command => 'head1',
             content => "LISTS\n",
           }),
         });

       Then this:

         $nester->transform_node($document);

       Will result in this document:

         Document
           =head1 Foo
           =head1 LISTS
             =over 4
             =item * xyzzy
             =item * abcdef
             =back
             =over 4
             =item * 1234
             =item * 8765
             =back
           =head1 Bar

       This library should run on perls released even a long time ago.  It should work on any version of perl
       released in the last five years.

       Although it may work on older versions of perl, no guarantee is made that the minimum required version
       will not be increased.  The version may be increased for any reason, and there is no promise that patches
       will be accepted to lower the minimum required perl.

       version 0.103006