functions.php

<?php
/*
 ==========================================================================
 *  Theme settings
 * ========================================================================== */
if ( ! function_exists( 'aperitto_setup' ) ) :
	function aperitto_setup() {

		if ( ! isset( $content_width ) ) {
			$content_width = 725;
		}

		load_theme_textdomain( 'aperitto', get_template_directory() . '/languages' );

		add_theme_support( 'woocommerce' );
		add_theme_support( 'bbpress' );

		add_theme_support( 'automatic-feed-links' );
		add_theme_support( 'post-thumbnails' );
		add_theme_support( 'title-tag' );
		add_theme_support( 'html5', array( 'search-form', 'comment-form', 'comment-list', 'gallery', 'caption' ) );

		add_theme_support( 'wp-block-styles' );
		add_theme_support( 'responsive-embeds' );
		add_theme_support( 'align-wide' );

		add_theme_support( 'custom-background', apply_filters( 'aperitto_custom_background_args', array( 'default-color' => 'eeeeee' ) ) );
		add_theme_support(
			'custom-header',
			array(
				'width'       => 1080,
				'height'      => 190,
				'flex-height' => true,
				'flex-width'  => true,
			)
		);

		register_nav_menus(
			array(
				'top'    => __( 'Main Menu', 'aperitto' ),
				'bottom' => __( 'Footer Menu', 'aperitto' ),
			)
		);

		// logo
		$args = array();
		$lpos = get_theme_mod( 'display_logo_and_title' );
		if ( false === $lpos || 'image' == $lpos ) {
			$args['header-text'] = array( 'blog-name' );
		}
		add_theme_support( 'custom-logo', $args );
	}
endif;
add_action( 'after_setup_theme', 'aperitto_setup' );


/*
 ==========================================================================
 *  Load scripts and styles
 * ========================================================================== */
if ( ! function_exists( 'aperitto_enqueue_style_and_script' ) ) :
	function aperitto_enqueue_style_and_script() {

		// STYLES
		wp_enqueue_style( 'aperitto-style', get_stylesheet_uri(), array(), true );

		// SCRIPTS
		wp_enqueue_script( 'aperitto-html5shiv', get_template_directory_uri() . '/js/html5shiv.min.js', array(), '3.7.3', true );
		wp_script_add_data( 'aperitto-html5shiv', 'conditional', 'lt IE 9' );

		wp_enqueue_script( 'aperitto-scripts', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), true, true );

		if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
			wp_enqueue_script( 'comment-reply', false, true, true );
		}
	}
endif;
add_action( 'wp_enqueue_scripts', 'aperitto_enqueue_style_and_script' );


/*
 ==========================================================================
 *  admin area
 * ========================================================================== */
if ( ! function_exists( 'aperitto_editor_styles' ) ) :
	function aperitto_editor_styles() {
		add_editor_style( 'editor-style.css' );
	}
endif;
add_action( 'admin_init', 'aperitto_editor_styles' );


/*
 ==========================================================================
 *  Register widget area
 * ========================================================================== */
if ( ! function_exists( 'aperitto_widgets_init' ) ) :
	function aperitto_widgets_init() {

		register_sidebar(
			array(
				'name'          => __( 'Sidebar', 'aperitto' ),
				'id'            => 'sidebar',
				'description'   => __( 'Add widgets here to appear in your sidebar.', 'aperitto' ),
				'before_widget' => '<li id="%1$s" class="widget %2$s">',
				'after_widget'  => '</li>',
				'before_title'  => '<p class="wtitle">',
				'after_title'   => '</p>',
			)
		);
	}
endif;
add_action( 'widgets_init', 'aperitto_widgets_init' );



/*
 ========================================================================== *
 * default COMMENT callback
 * ========================================================================== */
if ( ! function_exists( 'aperitto_html5_comment' ) ) :
	function aperitto_html5_comment( $comment, $args, $depth ) {

		$tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
		?>
		<<?php echo $tag; ?> id="comment-<?php comment_ID(); ?>" <?php comment_class( empty( $args['has_children'] ) ? '' : 'parent' ); ?>>
			<div id="div-comment-<?php comment_ID(); ?>" class="comment-body">

				<footer class="comment-meta">
					<div class="comment-author">
						<?php
						if ( 0 !== $args['avatar_size'] ) {
							echo get_avatar( $comment, $args['avatar_size'] );
						}
						?>
						<b class="fn"><?php comment_author_link(); ?></b>
					</div>

					<div class="comment-metadata">
						<a href="<?php echo esc_url( get_comment_link( $comment->comment_ID, $args ) ); ?>">
							<time datetime="<?php comment_time( 'c' ); ?>">
								<?php printf( __( '%1$s at %2$s', 'aperitto' ), get_comment_date(), get_comment_time() ); ?>
							</time>
						</a>
						<?php edit_comment_link( __( 'Edit', 'aperitto' ), '<span class="edit-link">', '</span>' ); ?>
					</div>

					<?php if ( '0' === $comment->comment_approved ) : ?>
						<p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'aperitto' ); ?></p>
					<?php endif; ?>
				</footer>

				<div class="comment-content">
					<?php comment_text(); ?>
				</div>

				<div class="reply">
					<?php
					comment_reply_link(
						array_merge(
							$args,
							array(
								'add_below' => 'div-comment',
								'depth'     => $depth,
								'max_depth' => $args['max_depth'],
							)
						)
					);
					?>
				</div>

			</div>

		<?php

	}
endif;


/**
 * Include libraries
 */

// functions to display some page parts.
require_once get_template_directory() . '/inc/html-blocks.php';

// layout functions and filters.
require_once get_template_directory() . '/inc/layout.php';

// hooks.
require_once get_template_directory() . '/inc/hooks.php';
require_once get_template_directory() . '/inc/woo-hooks.php';

// theme options with Customizer API.
require_once get_template_directory() . '/inc/admin/options.php';
require_once get_template_directory() . '/inc/customizer/customizer-controls.php';
require_once get_template_directory() . '/inc/customizer/customizer-settings.php';
require_once get_template_directory() . '/inc/customizer/customizer.php';

if ( is_admin() ) :
	// meta-box for layout control.
	require_once get_template_directory() . '/inc/admin/meta-boxes.php';

endif;


/**
 * Add data-title attribute to nav menu items
 *
 * @param array    $atts The HTML attributes applied to the menu item's <a> element, empty strings are ignored.
 * @param WP_Post  $item The current menu item.
 * @param stdClass $args An object of wp_nav_menu() arguments.
 * @return array
 * @since 1.0.0
 */
function gp_add_data_atts_to_nav( $atts, $item, $args ) {
	$atts['title'] = $item->title;
	return $atts;
}
add_filter( 'nav_menu_link_attributes', 'gp_add_data_atts_to_nav', 10, 4 );