--- /usr/lib/python3.5/argparse.py	2017-01-19 15:11:04.000000000 +0100
+++ argparse.py	2017-05-21 10:34:13.120282129 +0200
@@ -2030,17 +2030,24 @@ class ArgumentParser(_AttributeHolder, _
 
             # replace arguments referencing files with the file content
             else:
+                arg_strings = []
                 try:
                     with open(arg_string[1:]) as args_file:
-                        arg_strings = []
                         for arg_line in args_file.read().splitlines():
                             for arg in self.convert_arg_line_to_args(arg_line):
+                                # make nested includes relative to their parent
+                                if arg.startswith(self.fromfile_prefix_chars):
+                                    dirname = _os.path.dirname(arg_string[1:])
+                                    path = _os.path.join(dirname, arg[1:])
+                                    # eliminate ../foo/../foo constructs
+                                    path = _os.path.normpath(path)
+                                    arg = arg[0] + path
                                 arg_strings.append(arg)
-                        arg_strings = self._read_args_from_files(arg_strings)
-                        new_arg_strings.extend(arg_strings)
                 except OSError:
                     err = _sys.exc_info()[1]
                     self.error(str(err))
+                arg_strings = self._read_args_from_files(arg_strings)
+                new_arg_strings.extend(arg_strings)
 
         # return the modified argument list
         return new_arg_strings