function twentynineteen_posted_by() {
    printf(
      /* translators: 1: SVG icon. 2: post author, only visible to screen readers. 3: author link. */
      '<span class="byline">%1$s<span class="screen-reader-text">%2$s</span><span class="author vcard"><a class="url fn n" href="%3$s">%4$s</a></span></span>',
      twentynineteen_get_icon_svg( 'person', 16 ),
      __( 'Posted by', 'twentynineteen' ),
      esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
      esc_html( get_the_author() )
    );
  }