Login and Registration: Add a filter to disable the initial auto-focus on the login screen.

Fixes #40301.

Built from https://develop.svn.wordpress.org/trunk@40652


git-svn-id: http://core.svn.wordpress.org/trunk@40515 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40651';
+$wp_version = '4.8-alpha-40652';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-login.php

@@ -358,7 +358,7 @@ function retrieve_password() {
 
 	/**
 	 * Filters the message body of the password reset mail.
-	 * 
+	 *
 	 * If the filtered message is empty, the password reset email will not be sent.
 	 *
 	 * @since 2.8.0
@@ -964,7 +964,14 @@ d.select();
 }, 200);
 }
 
-<?php if ( !$error ) { ?>
+/**
+ * Filters whether to print the call to `wp_attempt_focus()` on the login screen.
+ *
+ * @since 4.8.0
+ *
+ * @param bool $print Whether to print the function call. Default true.
+ */
+<?php if ( apply_filters( 'enable_login_autofocus', true ) && ! $error ) { ?>
 wp_attempt_focus();
 <?php } ?>
 if(typeof wpOnload=='function')wpOnload();