Restructure theme, use autoloader

templates/partials/comments.php

@@ -0,0 +1,36 @@
+<?php
+if (post_password_required()) {
+  return;
+}
+?>
+
+<section id="comments" class="comments">
+  <?php if (have_comments()) : ?>
+    <h2><?php printf(_nx('One response to &ldquo;%2$s&rdquo;', '%1$s responses to &ldquo;%2$s&rdquo;', get_comments_number(), 'comments title', 'sage'), number_format_i18n(get_comments_number()), '<span>' . get_the_title() . '</span>'); ?></h2>
+
+    <ol class="comment-list">
+      <?php wp_list_comments(['style' => 'ol', 'short_ping' => true]); ?>
+    </ol>
+
+    <?php if (get_comment_pages_count() > 1 && get_option('page_comments')) : ?>
+      <nav>
+        <ul class="pager">
+          <?php if (get_previous_comments_link()) : ?>
+            <li class="previous"><?php previous_comments_link(__('&larr; Older comments', 'sage')); ?></li>
+          <?php endif; ?>
+          <?php if (get_next_comments_link()) : ?>
+            <li class="next"><?php next_comments_link(__('Newer comments &rarr;', 'sage')); ?></li>
+          <?php endif; ?>
+        </ul>
+      </nav>
+    <?php endif; ?>
+  <?php endif; // have_comments() ?>
+
+  <?php if (!comments_open() && get_comments_number() != '0' && post_type_supports(get_post_type(), 'comments')) : ?>
+    <div class="alert alert-warning">
+      <?php _e('Comments are closed.', 'sage'); ?>
+    </div>
+  <?php endif; ?>
+
+  <?php comment_form(); ?>
+</section>