Merge pull request #11330 from hongshaoyang/patch-1

Fix  #11309 (handle quotes in magics arguments)

IPython/core/magics/osm.py

@@ -816,8 +816,11 b' class OSMagics(Magics):'
         The file will be overwritten unless the -a (--append) flag is specified.
         """
         args = magic_arguments.parse_argstring(self.writefile, line)
-        filename = os.path.expanduser(args.filename)
-
+        if re.match(r'[\'*\']|["*"]', args.filename):
+            filename = os.path.expanduser(args.filename[1:-1])
+        else:
+            filename = os.path.expanduser(args.filename)
+            
         if os.path.exists(filename):
             if args.append:
                 print("Appending to %s" % filename)

IPython/core/tests/test_magic.py

@@ -27,7 +27,8 b' from IPython.core.magics import execution, script, code, logging'
 from IPython.testing import decorators as dec
 from IPython.testing import tools as tt
 from IPython.utils.io import capture_output
-from IPython.utils.tempdir import TemporaryDirectory
+from IPython.utils.tempdir import (TemporaryDirectory,
+                                    TemporaryWorkingDirectory)
 from IPython.utils.process import find_cmd
 
 
@@ -797,7 +798,20 b' def test_file_amend():'
             s = f.read()
         nt.assert_in('line1\n', s)
         nt.assert_in('line3\n', s)
-        
+
+def test_file_spaces():
+    """%%file with spaces in filename"""
+    ip = get_ipython()
+    with TemporaryWorkingDirectory() as td:
+        fname = "file name"
+        ip.run_cell_magic("file", '"%s"'%fname, u'\n'.join([
+            'line1',
+            'line2',
+        ]))
+        with open(fname) as f:
+            s = f.read()
+        nt.assert_in('line1\n', s)
+        nt.assert_in('line2', s)
     
 def test_script_config():
     ip = get_ipython()