this textarea cell supports text area with line breaks ..

backgrid-textarea-cell.coffee

jQuery ($)->
  _.extend Backgrid.Command.prototype, {

    save: () ->
      !@shiftKey && @keyCode is 13

    moveUp: () ->
     @shiftKey && @keyCode is 38


    moveDown: ()->
     @shiftKey &&  @keyCode is 40

  }

class Backgrid.TextareaFormatter extends Backgrid.StringFormatter

  fromRaw: (rawValue, model)->
    rawValue = rawValue.replace /</g, "&lt;"
    rawValue = rawValue.replace />/g, "&gt;"
    rawValue.replace /\n/g, '<br />'

class Backgrid.TextareaEditor extends Backgrid.InputCellEditor
  tagName: 'textarea'

  render: ()->
    @$el.val @model.get(@column.get("name"), @model)

class Backgrid.TextCell extends  Backgrid.StringCell

  className: "text-cell"
  editor: Backgrid.TextareaEditor
  formatter: Backgrid.TextareaFormatter

  render: ()->
    @$el.empty()
    @$el.html(@formatter.fromRaw(@model.get(@column.get("name")), @model))
    @delegateEvents()
    @