#12353: argparse now correctly handles null argument values.
Patch by Torsten Landschoff.
diff --git a/Lib/argparse.py b/Lib/argparse.py
index cf0097b..25803b3 100644
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -1976,7 +1976,7 @@
for arg_string in arg_strings:
# for regular arguments, just add them back into the list
- if arg_string[0] not in self.fromfile_prefix_chars:
+ if not arg_string or arg_string[0] not in self.fromfile_prefix_chars:
new_arg_strings.append(arg_string)
# replace arguments referencing files with the file content