barebones/functions.php

<?php

/**
 * Add support for useful stuff
 */

add_theme_support( 'post-thumbnails' );
add_theme_support( 'post-formats', array( 'post' ) ); 
add_theme_support( 'custom-header' );
add_theme_support( 'custom-background' );
add_post_type_support( 'page', 'excerpt' );


/**
 * Remove junk
 */
 
define( 'ICL_DONT_LOAD_LANGUAGE_SELECTOR_CSS', true );
define( 'ICL_DONT_LOAD_LANGUAGES_JS', true );

add_filter('show_admin_bar', '__return_false');

remove_action( 'wp_head', 'rsd_link' );
remove_action( 'wp_head', 'wlwmanifest_link' );
remove_action( 'wp_head', 'wp_generator' );
remove_action( 'wp_head', 'start_post_rel_link' );
remove_action( 'wp_head', 'index_rel_link' );
remove_action( 'wp_head', 'adjacent_posts_rel_link_wp_head' );
remove_action( 'wp_head', 'wp_shortlink_wp_head', 10, 0 );
remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
remove_action( 'wp_print_styles', 'print_emoji_styles' );

function barebones_remove_comments_rss( $for_comments ) {
    return;
}

add_filter( 'post_comments_feed_link', 'barebones_remove_comments_rss' );


/**
 * jQuery the right way
 */

function barebones_scripts() {
  /*
   * For IE8 to play nice, you'll need to include your CSS here, for example:
   */
  // wp_enqueue_style( 'fonts', '//fonts.googleapis.com/css?family=Font+Family' );
  wp_deregister_script( 'jquery' );
  wp_register_script( 'jquery', '//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js', false, '1.11.2', true );
  wp_enqueue_script( 'jquery' );
  wp_enqueue_script( 'script', get_stylesheet_directory_uri() . '/js/script.min.js', array( 'jquery' ), null, true );
}

add_action( 'wp_enqueue_scripts', 'barebones_scripts' );


/**
 * Nav menus
 */

if ( function_exists( 'register_nav_menus' ) ) {
  register_nav_menus(array(
    'header' => 'Header',
    'footer' => 'Footer'
  ));
}

function barebones_nav_menu_args( $args = '' ) {
  $args['container']       = false;
  $args['container_class'] = false;
  $args['menu_id']         = false;
  $args['items_wrap']      = '<ul class="%2$s">%3$s</ul>';
  return $args;
}

add_filter( 'wp_nav_menu_args', 'barebones_nav_menu_args' );


/**
 * Email
 */

function barebones_mail_from( $email ) {
  return get_option( 'admin_email' );
}

add_filter( 'wp_mail_from', 'barebones_mail_from' );

function barebones_mail_from_name( $name ) {
  return get_bloginfo( 'name' );
}

add_filter( 'wp_mail_from_name', 'barebones_mail_from_name' );


/**
 * Shortcodes ([button] shortcode included)
 */

function button_shortcode( $atts, $content = null ) {
  return '<a class="btn" href="' . $atts['link'] . '">' . $content . '</a>';
}

add_shortcode( 'button', 'button_shortcode' );


/**
 * TinyMCE
 */

function barebones_mce_buttons_2( $buttons ) {
  array_unshift( $buttons, 'styleselect' );
  $buttons[] = 'hr';
  return $buttons;
}

add_filter( 'mce_buttons_2', 'barebones_mce_buttons_2' );

function barebones_tiny_mce_before_init( $settings ) {
  $style_formats = array(
    /* 
     * Example 
     *
    array(
      'title'    => '',
      'selector' => '',
      'classes'  => ''
    ) */
  );
  $settings['style_formats'] = json_encode( $style_formats );
  return $settings;
}

add_filter( 'tiny_mce_before_init', 'barebones_tiny_mce_before_init' );


/**
 * Get image URL for whatever size.
 */

function wp_get_attachment_image_url( $id, $size = 'full', $attrs = []) {
  $image = wp_get_attachment_image_src( $id, $size, $attrs );
  return $image[0];
}