first import

sites/all/modules/custom_formatters/includes/system.inc

@@ -0,0 +1,38 @@
+<?php
+/**
+ * @file
+ * System module integration.
+ */
+
+/**
+ * Implements hook_init().
+ */
+function custom_formatters_init() {
+  module_invoke_all('custom_formatters_init');
+}
+
+/**
+ * Implements hook_element_info().
+ */
+function custom_formatters_element_info() {
+  $types = array();
+  drupal_alter('custom_formatters_element_info', $types);
+  return $types;
+}
+
+/**
+ * Implements hook_theme().
+ */
+function custom_formatters_theme() {
+  $theme = array();
+  drupal_alter('custom_formatters_theme', $theme);
+  return $theme;
+}
+
+/**
+ * Implements hook_form_alter().
+ */
+function custom_formatters_form_alter(&$form, &$form_state, $form_id) {
+  drupal_alter('custom_formatters_form_alter', $form, $form_state, $form_id);
+  drupal_alter("custom_formatters_form_{$form_id}_alter", $form, $form_state);
+}