Fix Escape message

includes/CLI/Plugin_Check_Command.php

@@ -555,6 +555,7 @@ private function flatten_file_results( $file_errors, $file_warnings ) {
 				foreach ( $column_errors as $column_error ) {
 
 					$column_error['message'] = str_replace( array( '<br>', '<strong>', '</strong>', '<code>', '</code>' ), array( ' ', '', '', '`', '`' ), $column_error['message'] );
+					$column_error['message'] = html_entity_decode( $column_error['message'] );
 
 					$file_results[] = array_merge(
 						$column_error,

includes/Checker/Checks/Abstract_PHP_CodeSniffer_Check.php

@@ -142,7 +142,7 @@ final public function run( Check_Result $result ) {
 				$this->add_result_message_for_file(
 					$result,
 					strtoupper( $file_message['type'] ) === 'ERROR',
-					$file_message['message'],
+					esc_html( $file_message['message'] ),
 					$file_message['source'],
 					$file_name,
 					$file_message['line'],

includes/Checker/Checks/Plugin_Repo/Plugin_Readme_Check.php

@@ -213,7 +213,7 @@ private function check_headers( Check_Result $result, string $readme_file, Parse
 							$result,
 							sprintf(
 								/* translators: 1: currently used version, 2: latest stable WordPress version, 3: 'Tested up to' */
-								__( '<strong>Tested up to: %1$s < %2$s.</strong><br>The "%3$s" value in your plugin is not set to the current version of WordPress. This means your plugin will not show up in searches, as we require plugins to be compatible and documented as tested up to the most recent version of WordPress.', 'plugin-check' ),
+								__( '<strong>Tested up to: %1$s &lt; %2$s.</strong><br>The "%3$s" value in your plugin is not set to the current version of WordPress. This means your plugin will not show up in searches, as we require plugins to be compatible and documented as tested up to the most recent version of WordPress.', 'plugin-check' ),
 								$parser->{$field_key},
 								$latest_wordpress_version,
 								'Tested up to'

tests/phpunit/tests/Checker/Checks/I18n_Usage_Check_Tests.php

@@ -58,8 +58,8 @@ public function test_run_without_default_textdomain() {
 
 		// Explicitly using the 'default' text domain is a warning, omitting a text domain is an error.
 		$this->assertNotEmpty( $check_result->get_errors() );
-		$this->assertNotEmpty( $check_result->get_warnings() );
-		$this->assertEquals( 1, $check_result->get_error_count() );
-		$this->assertEquals( 1, $check_result->get_warning_count() );
+		$this->assertEmpty( $check_result->get_warnings() );
+		$this->assertEquals( 2, $check_result->get_error_count() );
+		$this->assertEquals( 0, $check_result->get_warning_count() );
 	}
 }