Test plugin for http://wordpress.org/support/topic/wpas_default_message-filter-not-working?replies=10

test-plugin.php

<?php
/*
 * Plugin Name: AA Test Plugin
 * Plugin URI: http://wordpress.org/extend/plugins/test
  * Description: Testing all kinds of things!
 * Author: Richard Archambault
 * Version: 1.0
 * License: GPL2+
 */
  

function register_custom_post_types() {
  /**************************/
  /* Register DOG post type */
  /**************************/

  register_post_type('dog', array(
    'label' => 'Dogs',
    'labels' => array(
      'name' => 'Dogs',
      'singular_name' => 'Dog',
      'add_new' => 'Add New Dog',
      'add_new_item' => 'Add New Dog',
      'edit_item' => 'Edit Dog',
      'new_item' => 'New Dog',
      'view' => 'View Dog',
      'view_item' => 'View Dog',
      'search_items' => 'Search Dogs',
      'not_found' => 'No Dogs found',
      'not_found_in_trash' => 'No Dogs found in Trash'
    ),
    'description' => 'Dogs',
    'public' => true,
    'menu_position' => 5,
    'supports' => array(
      'title',
      'revisions',
      'publicize',
      'shortlinks'
    ),
    'has_archive' => true,
    'rewrite' => array(
      'slug' => 'rescue',
      'with_front' => false
    ),
    'menu_icon' => 'dashicons-jamies-paw'
  ));

  register_taxonomy('age', array('dog', 'success'), array(
    'capabilities' => array(
      'manage_terms' => '',
      'edit_terms' => '',
      'delete_terms' => '',
      'assign_terms' => ''
    ),
    'label' => 'Age',
    'labels' => array(
      'name' => 'Age',
      'add_new_item' => 'Add New Age',
      'new_item_name' => 'Add New Age'
    ),
    'public' => true,
    'show_admin_column' => true,
    'show_in_nav_menus' => false,
    'show_tagcloud' => false,
    'show_ui' => true,
    'hierarchical' => true
  ));


  register_taxonomy('breed', array('dog', 'success'), array(
    'capabilities' => array(
      'manage_terms' => '',
      'edit_terms' => '',
      'delete_terms' => '',
      'assign_terms' => ''
    ),
    'label' => 'Breed',
    'labels' => array(
      'name' => 'Breed',
      'add_new_item' => 'Add New Breed',
      'new_item_name' => 'Add New Breed'
    ),
    'public' => true,
    'show_admin_column' => true,
    'show_in_nav_menus' => false,
    'show_tagcloud' => false,
    'show_ui' => true,
    'hierarchical' => true
  ));

  register_taxonomy('sex', array('dog', 'success'), array(
    'capabilities' => array(
      'manage_terms' => '',
      'edit_terms' => '',
      'delete_terms' => '',
      'assign_terms' => ''
    ),
    'label' => 'Sex',
    'labels' => array(
      'name' => 'Sex',
      'add_new_item' => 'Add New Sex',
      'new_item_name' => 'Add New Sex'
    ),
    'public' => true,
    'show_admin_column' => true,
    'show_in_nav_menus' => false,
    'show_tagcloud' => false,
    'show_ui' => true,
    'hierarchical' => true
  ));

  register_taxonomy('size', array('dog', 'success'), array(
    'capabilities' => array(
      'manage_terms' => '',
      'edit_terms' => '',
      'delete_terms' => '',
      'assign_terms' => ''
    ),
    'label' => 'Size',
    'labels' => array(
      'name' => 'Size',
      'add_new_item' => 'Add New Size',
      'new_item_name' => 'Add New Size'
    ),
    'public' => true,
    'show_admin_column' => true,
    'show_in_nav_menus' => false,
    'show_tagcloud' => false,
    'show_ui' => true,
    'hierarchical' => true
  ));

  register_taxonomy_for_object_type('age', 'dog');
  register_taxonomy_for_object_type('breed', 'dog');
  register_taxonomy_for_object_type('sex', 'dog');
  register_taxonomy_for_object_type('size', 'dog');

  /******************************/
  /* Register SUCCESS post type */
  /******************************/

  register_post_type('success', array(
    'label' => 'Success Stories',
    'labels' => array(
      'name' => 'Success Stories',
      'singular_name' => 'Success Story',
      'add_new' => 'Add New Success Story',
      'add_new_item' => 'Add New Success Story',
      'edit_item' => 'Edit Success Story',
      'new_item' => 'New Success Story',
      'view' => 'View Success Story',
      'view_item' => 'View Success Story',
      'search_items' => 'Search Success Stories',
      'not_found' => 'No Success Stories found',
      'not_found_in_trash' => 'No Success Stories found in Trash'
    ),
    'description' => 'Success Stories',
    'public' => true,
    'menu_position' => 5,
    'supports' => array(
      'title',
      'revisions',
      'publicize',
      'shortlinks'
    ),
    'has_archive' => true,
    'rewrite' => array(
      'slug' => 'success',
      'with_front' => false
    ),
    'menu_icon' => 'dashicons-format-status'
  ));

  register_taxonomy_for_object_type('age', 'success');
  register_taxonomy_for_object_type('breed', 'success');
  register_taxonomy_for_object_type('sex', 'success');
  register_taxonomy_for_object_type('size', 'success');

  /****************************/
  /* Register EVENT post type */
  /****************************/

  register_post_type('event', array(
    'label' => 'Events/Press',
    'labels' => array(
      'name' => 'Events/Press',
      'singular_name' => 'Event/Press',
      'add_new' => 'Add New Event/Press',
      'add_new_item' => 'Add New Event/Press',
      'edit_item' => 'Edit Event/Press',
      'new_item' => 'New Event/Press',
      'view' => 'View Event/Press',
      'view_item' => 'View Event/Press',
      'search_items' => 'Search Events/Press',
      'not_found' => 'No Events/Press found',
      'not_found_in_trash' => 'No Events/Press found in Trash'
    ),
    'description' => 'Events/Press',
    'public' => true,
    'menu_position' => 5,
    'supports' => array(
      'title',
      'revisions',
      'publicize',
      'shortlinks'
    ),
    'has_archive' => true,
    'rewrite' => array(
      'slug' => 'event',
      'with_front' => false
    ),
    'menu_icon' => 'dashicons-calendar'
  ));
}
add_action('init', 'register_custom_post_types', 0);


function custom_open_graph_tags($tags, $size) {
  global $post;

  if(isset($tags['article:author'])) {
    $tags['article:author'] = home_url('/');
  }

  $social = get_field('icons-social', 'option');
  foreach($social as $s) {
    if(stristr($s['social-link'], 'twitter.com')) {
      $twitter_name = basename($s['social-link']);
      break;
    }
  }

  if(is_singular('event')) {
    $details = get_field('details', $post->ID);
    $images = $details[0]['imgs'];
    foreach($images as $i) {
      $multi[] = $i['img']['url'];
    }
    $img = $images[0]['img']['url'];

    $details = get_field('details', $post->ID);
    $tags['og:description'] = esc_attr(wp_strip_all_tags($details[0]['description'], true));
  } elseif(is_singular('dog') || is_singular('success')) {
    $images = get_field('imgs', $post->ID);
    foreach($images as $i) {
      $multi[] = $i['img']['url'];
    }
    $img = $images[0]['img']['url'];

    $tags['og:description'] = is_singular('dog') ? get_field('bio', $post->ID) : get_field('success', $post->ID);
    $tags['twitter:card'] = 'summary_large_image';
    $tags['twitter:description'] = $tags['og:description'];
    $tags['twitter:image'] = $img;
    
  } else {
    $img = get_field('og', 'option');
  }

  $tags['og:image'][0] = $img;

  if(isset($tags['twitter:card'])) {
    $tags['twitter:site'] = '@'.$twitter_name;
  }

  return $tags;
}
add_filter('jetpack_open_graph_tags', 'custom_open_graph_tags', 10, 2);

function cfx_default_msg() {
  return 'msg';
}
add_filter('wpas_default_message', 'cfx_default_msg');

function pre() {
  return 'prefix';
}
add_filter('wpas_default_prefix', 'pre');

function suff() {
  return 'suffix';
}
add_filter('wpas_default_suffix', 'suff');
?>