Replace triple dots with proper ellipses

Ellipses.m

// Replace triple dots with proper ellipses.
// Source: http://www.mikeabdullah.net/ellipses_and_sheepkit.html

- (BOOL)textView:(EweEyeTextView *)textView
        shouldChangeTextInRange:(NSRange)range
        replacementText:(NSString *)text
{
    BOOL result = YES;
    if ([text hasSuffix:@"."])	// Accounts for somehow entering ".."
    {
        NSMutableString *resultantText = [[textView text] mutableCopy];
        [resultantText replaceCharactersInRange:range withString:text];
        NSRange ellipsisRange =
          NSMakeRange(range.location + [text length] - 3, 3);
        NSString *possibleEllipsis =
          [resultantText substringWithRange:ellipsisRange];
        if ([possibleEllipsis isEqualToString:@"..."])
        {
            [resultantText replaceCharactersInRange:ellipsisRange
                                         withString:@"…"];
            [textView setText:resultantText];
            NSRange selection = NSMakeRange(ellipsisRange.location + 1, 0);
            [textView setSelectedRange:selection];
            result = NO;
        }
        [resultantText release];
    }
    return result;
}