Restore Post Format Icons

<?php
/*
Plugin Name: Restore Post Format Icons
Description: Restores post format icons in list tables, removed in WordPress 5.2.
Author: Sergey Biryukov
Author URI: http://profiles.wordpress.org/sergeybiryukov/
Version: 1.0
*/

class Restore_Post_Format_Icons {

    function __construct() {
        add_filter( 'manage_posts_columns',       array( $this, 'add_column' ), 10, 2 );
        add_action( 'manage_posts_custom_column', array( $this, 'display_column' ), 10, 2 );
        add_action( 'admin_enqueue_scripts',      array( $this, 'add_inline_style' ) );
    }

    function add_column( $posts_columns, $post_type ) {
        $filtered_columns = array();

        foreach ( $posts_columns as $key => $column ) {
            if ( 'title' === $key ) {
                $filtered_columns['format'] = '<span class="dashicons dashicons-images-alt"></span>';
            }

            $filtered_columns[ $key ] = $column;
        }

        return $filtered_columns;
    }

    function display_column( $column_name, $post_id ) {
        if ( 'format' !== $column_name ) {
            return;
        }

        $format = get_post_format( $post_id );
        if ( $format ) {
            printf( '<span class="post-format-icon post-format-%s"></span>', esc_attr( $format ) );
        } else {
            echo '<span aria-hidden="true">&#8212;</span>';
        }
    }

    function add_inline_style( $hook_suffix ) {
        if ( 'edit.php' !== $hook_suffix ) {
            return;
        }

        wp_add_inline_style( 'wp-admin', '.fixed .column-format { width: 1em }' );
    }

}

new Restore_Post_Format_Icons;
?>