[Pharo-project] Compiler throws error in Gemstone, not in Pharo

Dear list, while testing between Pharo and Gemstone I've noticed that Pharo allows following code, while Gemstone does not. renderSelectorAndReturnBrushForSelector: aSelector. ^canvas textInput id: (self idForSelector: aSelector); value: (self inputValueForSelector: aSelector); script: (canvas jQuery new datepicker); yourself The error is that in the message definition: renderSelectorAndReturnBrushForSelector: aSelector. there is a dot on the end. This seems like an error in the Pharo compiler ? or not? Kind Regards, Bart