Copy and paste with footer information (from https://braziljournal.com/)

gistfile1.txt

$(document).ready(function() {
                $(document).on('copy', function () {
            var selection = window.getSelection();
            var copyFooter = '<br><br>Leia mais em <a href="' + document.location.href + '">' + document.location.href + '</a>';
            var copyHolder = $('<div>', {
                html: (selection + '').substring(0, 140) + '...' + copyFooter,
                style: {
                    position: 'absolute',
                    left: '-99999px'}
                }
            );

            $('body').append(copyHolder);
            selection.selectAllChildren(copyHolder[0]);
            window.setTimeout(function() {
                copyHolder.remove();
            }, 0);
        });
    });