Add dev_commit.sh helper and no-emoji mandate

wp-includes/wp-diff.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * WordPress Diff bastard child of old MediaWiki Diff Formatter.
+ *
+ * Basically all that remains is the table structure and some method names.
+ *
+ * @package WordPress
+ * @subpackage Diff
+ */
+
+// Don't load directly.
+if ( ! defined( 'ABSPATH' ) ) {
+	die( '-1' );
+}
+
+if ( ! class_exists( 'Text_Diff', false ) ) {
+	/** Text_Diff class */
+	require ABSPATH . WPINC . '/Text/Diff.php';
+	/** Text_Diff_Renderer class */
+	require ABSPATH . WPINC . '/Text/Diff/Renderer.php';
+	/** Text_Diff_Renderer_inline class */
+	require ABSPATH . WPINC . '/Text/Diff/Renderer/inline.php';
+	/** Text_Exception class */
+	require ABSPATH . WPINC . '/Text/Exception.php';
+}
+
+require ABSPATH . WPINC . '/class-wp-text-diff-renderer-table.php';
+require ABSPATH . WPINC . '/class-wp-text-diff-renderer-inline.php';