NSSavePanel fragile ABI - do we care?

[Luboš Doležel]

Hi,

I'm adding two methods using blocks:

- (void) beginSheetModalForWindow:(NSWindow *)window
                completionHandler:(GSSavePanelCompletionHandler)handler;
- (void) beginWithCompletionHandler (GSSavePanelCompletionHandler)handler;

into NSSavePanel. For the latter, I need to add two ivars

GSSavePanelCompletionHandler _completionHandler;
NSWindowController *_modelessWindowController;

since its modeless and returns immediately.

Should I add indirection not to break fragile ABI derived classes, or do
you think it's not needed for this class?

-- 
Luboš Doležel