File cell magic in IPython fails on blank lines

file_magic_blank_lines.ipynb

{
 "metadata": {
  "name": "file magic bug"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%%file no_blank.txt\n",
      "line 1\n",
      "line 2"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Overwriting no_blank.txt\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "!cat no_blank.txt"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "line 1\r\n",
        "line 2"
       ]
      }
     ],
     "prompt_number": 2
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%%file with_blank.txt\n",
      "line 1\n",
      "\n",
      "line 2"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "ename": "SyntaxError",
       "evalue": "invalid syntax (<ipython-input-3-dc9d60bbbaec>, line 2)",
       "output_type": "pyerr",
       "traceback": [
        "\u001b[1;36m  File \u001b[1;32m\"<ipython-input-3-dc9d60bbbaec>\"\u001b[1;36m, line \u001b[1;32m2\u001b[0m\n\u001b[1;33m    line 2\u001b[0m\n\u001b[1;37m         ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%%file py_with_blank.py\n",
      "print 'spam'\n",
      "\n",
      "print 'ham'"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Overwriting py_with_blank.py\n",
        "ham\n"
       ]
      }
     ],
     "prompt_number": 4
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "!cat py_with_blank.py"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "print 'spam'"
       ]
      }
     ],
     "prompt_number": 5
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "For reference, I use the development version of IPython and here is the last commit I pulled"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import IPython\n",
      "import os\n",
      "install_dir = os.path.split(IPython.__file__)[0]\n",
      "cwd = %pwd\n",
      "%cd -q $install_dir\n",
      "!git show\n",
      "%cd -q $cwd"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "commit 5e33c149a06b5cf9f9bb908230763bfee0181c1c\r\n",
        "Merge: 28f7764 8c514aa\r\n",
        "Author: Min RK <benjaminrk@gmail.com>\r\n",
        "Date:   Wed Apr 17 14:10:11 2013 -0700\r\n",
        "\r\n",
        "    Merge pull request #3189 from juhasch/improve-completer\r\n",
        "    \r\n",
        "    fix notebook completer redraw on metakey press\r\n",
        "    \r\n",
        "    - set <select> tag to style=\"width: auto\" to fit complete autocomplete string in drop down menu\r\n",
        "    - handle special keys better, so shift, ctrl, pgup, pgdown et al work as expected in the drop down list (i.e. pgup/pgdown/home/end move selection, shift, ctrl, caps lock do not restart the drop down menu)\r\n",
        "\r\n"
       ]
      }
     ],
     "prompt_number": 6
    }
   ],
   "metadata": {}
  }
 ]
}