I'm having problems making the Co-Authors Plus plugin work with the Graphene theme. I found the code lines in loop.php that I need to modify, however I have no clue what to modify them with.
<p class="post-author author vcard"> <?php /* translators: this is for the author byline, such as 'by John Doe' */ $author_url = '<a href="' . get_author_posts_url( get_the_author_meta( 'ID' ) ) . '" class="url">' . get_the_author_meta( 'display_name' ) . '</a>'; printf( __( 'by %s', 'graphene' ), '<span class="fn nickname">' . $author_url . '</span>' ); ?> </p>
Note I had issues with Graphene once before, but was able to eventually figure things out - the PHP functions listed in plugin's notes were similar the ones used by the graphene theme.
Now that Graphene's been updated to a newer version, they're using different code. The plugin notes aren't helping, and I'm afraid I am limited by my lack of PHP knowledge to figure it out by myself.