code: func Ellipsize(str string, maxWidth int) string {
  	ln := xs.Len(str)
  	if ln <= maxWidth {
  		return str
  	}
  
  	if maxWidth < 5 {
  		return xs.Slice(str, 0, maxWidth)
  	}
  
  	left := int((maxWidth - 3) / 2)
  	right := maxWidth - left - 3
  	return xs.Slice(str, 0, left) + "..." + xs.Slice(str, ln-right, -1)
  }
docs: // Ellipsize truncates text to maxWidth by replacing a
  // substring in the middle with ellipsis and keeping
  // the beginning and ending of the string untouched.
  // If maxWidth is less than 5 then no ellipsis is
  // added, the text is just truncated from the right.