always include a newline after non-null eval output

php/WP_CLI/REPL.php

@@ -21,15 +21,22 @@ public function start() {
 			$line = rtrim( $line, ';' ) . ';';
 
 			if ( self::starts_with( self::non_expressions(), $line ) ) {
+				ob_start();
 				eval( $line );
+				$out = ob_get_clean();
+				if ( 0 < strlen ( $out ) ) {
+					$out = rtrim( $out, "\n" ) . "\n";
+				}
+				fwrite( STDOUT, $out );
 			} else {
 				if ( !self::starts_with( 'return', $line ) )
 					$line = 'return ' . $line;
 
 				// Write directly to STDOUT, to sidestep any output buffers created by plugins
 				ob_start();
 				var_dump( eval( $line ) );
-				fwrite( STDOUT, ob_get_clean() );
+				$out = rtrim( ob_get_clean(), "\n" ) . "\n";
+				fwrite( STDOUT, $out );
 			}
 		}
 	}