Add --force-check flag to check-update command (#246)

* Add --force-check flag

* Regenerate README

* Tweak argument a little bit

---------

Co-authored-by: Daniel Bachhuber <daniel.bachhuber@automattic.com>

Author: shawnhooper

README.md

@@ -42,7 +42,7 @@ wp core
 Checks for WordPress updates via Version Check API.
 
 ~~~
-wp core check-update [--minor] [--major] [--field=<field>] [--fields=<fields>] [--format=<format>]
+wp core check-update [--minor] [--major] [--force-check] [--field=<field>] [--fields=<fields>] [--format=<format>]
 ~~~
 
 Lists the most recent versions when there are updates available,
@@ -56,6 +56,9 @@ or success message when up to date.
 	[--major]
 		Compare only the first part of the version number.
 
+	[--force-check]
+		Bypass the transient cache and force a fresh update check.
+
 	[--field=<field>]
 		Prints the value of a single field for each update.
 

src/Core_Command.php

@@ -44,6 +44,9 @@ class Core_Command extends WP_CLI_Command {
 	 * [--major]
 	 * : Compare only the first part of the version number.
 	 *
+	 * [--force-check]
+	 * : Bypass the transient cache and force a fresh update check.
+	 *
 	 * [--field=<field>]
 	 * : Prints the value of a single field for each update.
 	 *
@@ -1145,7 +1148,7 @@ public function update( $args, $assoc_args ) {
 					return;
 				}
 			} elseif ( ! empty( $from_api->updates ) ) {
-					list( $update ) = $from_api->updates;
+				list( $update ) = $from_api->updates;
 			}
 		} elseif ( Utils\wp_version_compare( $assoc_args['version'], '<' )
 			|| 'nightly' === $assoc_args['version']
@@ -1175,7 +1178,7 @@ public function update( $args, $assoc_args ) {
 
 		if ( ! empty( $update )
 			&& ( $update->version !== $wp_version
-			|| Utils\get_flag_value( $assoc_args, 'force' ) ) ) {
+				|| Utils\get_flag_value( $assoc_args, 'force' ) ) ) {
 
 			require_once ABSPATH . 'wp-admin/includes/upgrade.php';
 
@@ -1354,7 +1357,8 @@ private function get_download_url( $version, $locale = 'en_US', $file_type = 'zi
 	 * Returns update information.
 	 */
 	private function get_updates( $assoc_args ) {
-		wp_version_check();
+		$force_check = Utils\get_flag_value( $assoc_args, 'force-check' );
+		wp_version_check( [], $force_check );
 		$from_api = get_site_transient( 'update_core' );
 		if ( ! $from_api ) {
 			return [];