   # Returns a {Number} representing the `line` position where the wrap would take place.
   # Returns `null` if a wrap wouldn't occur.
   findWrapColumn: (maxColumn) ->
+    return unless maxColumn?
     return unless @text.length > maxColumn
 
     if /\s/.test(@text[maxColumn])

      return @text.length
    else
      # search backward for the start of the word on the boundary
      for column in [maxColumn..0] when @isColumnOutsideIndentation(column)
        return column + 1 if /\s/.test(@text[column])

      return maxColumn

  isSoftWrapped: ->
    @lineEnding is null

  isColumnInsideSoftWrapIndentation: (column) ->
    return false if @softWrapIndentationTokens.length == 0

