How do I get UILineBreakModeTailTruncation to reliably truncate ONLY on the last line?
CGSize stringSize;
    NSString *string = label.text;

    CGSize maximumLabelSize = CGSizeMake(contentRect.size.width, 50);
    stringSize = [string sizeWithFont:label.font
                                   constrainedToSize:maximumLabelSize
                                       lineBreakMode:self.label.lineBreakMode];

    label.frame = CGRectMake(CELL_PADDING, CELL_PADDING, contentRect.size.width - CELL_PADDING*2, stringSize.height);
}