#13922: argparse no longer incorrectly strips '--' after the first one.
Patch by Jeff Knupp.
diff --git a/Lib/argparse.py b/Lib/argparse.py
index 25803b3..0ee8c08 100644
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -2186,9 +2186,12 @@
# Value conversion methods
# ========================
def _get_values(self, action, arg_strings):
- # for everything but PARSER args, strip out '--'
+ # for everything but PARSER, REMAINDER args, strip out first '--'
if action.nargs not in [PARSER, REMAINDER]:
- arg_strings = [s for s in arg_strings if s != '--']
+ try:
+ arg_strings.remove('--')
+ except ValueError:
+ pass
# optional argument produces a default when not present
if not arg_strings and action.nargs == OPTIONAL: