Don't report an error when 5 out of 5 plugins were updated

features/plugin-update.feature

@@ -228,3 +228,33 @@ Feature: Update WordPress plugins
       Success:
       """
     And the return code should be 0
+
+
+  Scenario: Updating all plugins with some of them having an invalid version shouldn't report an error
+    Given a WP install
+
+    When I run `wp plugin install health-check --version=1.5.0`
+    Then STDOUT should not be empty
+
+    When I run `wp plugin install wordpress-importer --version=0.5`
+    Then STDOUT should not be empty
+
+    When I run `sed -i.bak 's/Version: .*/Version: 10000/' $(wp plugin path health-check)`
+    Then STDOUT should be empty
+    And the return code should be 0
+
+    When I try `wp plugin update --all`
+    Then STDERR should contain:
+      """
+      Warning: health-check: version higher than expected.
+      """
+
+    And STDOUT should not contain:
+      """
+      Error: Only updated 1 of 1 plugins.
+      """
+
+    And STDOUT should contain:
+      """
+      Success: Updated 1 of 1 plugins (1 skipped).
+      """

features/plugin.feature

@@ -159,7 +159,7 @@ Feature: Manage WordPress plugins
       """
     And STDERR should contain:
       """
-      Error: No plugins updated.
+      Error: No plugins updated (2 failed).
       """
     And the return code should be 1
 
@@ -177,7 +177,7 @@ Feature: Manage WordPress plugins
       """
     And STDERR should contain:
       """
-      Error: Only updated 1 of 3 plugins.
+      Error: Only updated 1 of 3 plugins (2 failed).
       """
     And the return code should be 1
 

src/WP_CLI/CommandWithUpgrade.php

@@ -334,7 +334,8 @@ protected function update_many( $args, $assoc_args ) {
 
 		$items = $this->get_item_list();
 
-		$errors = 0;
+		$errors  = 0;
+		$skipped = 0;
 		if ( ! Utils\get_flag_value( $assoc_args, 'all' ) ) {
 			$items  = $this->filter_item_list( $items, $args );
 			$errors = count( $args ) - count( $items );
@@ -378,7 +379,7 @@ protected function update_many( $args, $assoc_args ) {
 		foreach ( $items_to_update as $item_key => $item_info ) {
 			if ( static::INVALID_VERSION_MESSAGE === $item_info['update'] ) {
 				WP_CLI::warning( "{$item_info['name']}: " . static::INVALID_VERSION_MESSAGE . '.' );
-				$errors++;
+				$skipped++;
 				unset( $items_to_update[ $item_key ] );
 			}
 		}
@@ -478,7 +479,11 @@ static function ( $result ) {
 		}
 
 		$total_updated = Utils\get_flag_value( $assoc_args, 'all' ) ? $num_to_update : count( $args );
-		Utils\report_batch_operation_results( $this->item_type, 'update', $total_updated, $num_updated, $errors );
+		if ( 0 === $num_updated && $skipped ) {
+			$errors = $skipped;
+			$skipped = null;
+		}
+		Utils\report_batch_operation_results( $this->item_type, 'update', $total_updated, $num_updated, $errors, $skipped );
 		if ( null !== $exclude ) {
 			WP_CLI::log( "Skipped updates for: $exclude" );
 		}