Fixing control-click vs right-click contextual menus in NSView

controlclick.m

- (void)mouseDown:(NSEvent *)theEvent
{
    /*  Hard-coding this behavior isn't great, and shouldn't be necessary. (It should
        be up to OS X to define what a contextual-menu click is/isn't, and we should
        only care about vending our NSMenu via `menuForEvent:`). But this fixes the
        discrepancy between control and right clicks in NSView. */
        
    if ((theEvent.modifierFlags & NSControlKeyMask))
    {
        [NSMenu popUpContextMenu:[self menuForEvent:theEvent] withEvent:theEvent forView:self];
    }
}