_argparse: improve parse_* method compatibilityv2.2.0_alpha192

1 files changed, 12 insertions, 2 deletions

diff --git a/pym/portage/util/_argparse.py b/pym/portage/util/_argparse.py
index a9cdc9e62..6ca785235 100644
--- a/pym/portage/util/_argparse.py
+++ b/pym/portage/util/_argparse.py
@@ -9,6 +9,8 @@ except ImportError:
 	# Compatibility with Python 2.6 and 3.1
 	from optparse import OptionGroup, OptionParser
 
+	from portage.localization import _
+
 	class ArgumentParser(object):
 		def __init__(self, **kwargs):
 			add_help = kwargs.pop("add_help", None)
@@ -17,8 +19,6 @@ except ImportError:
 			parser = OptionParser(**kwargs)
 			self._parser = parser
 			self.add_argument = parser.add_option
-			self.parse_known_args = parser.parse_args
-			self.parse_args = parser.parse_args
 			self.print_help = parser.print_help
 			self.error = parser.error
 
@@ -27,6 +27,16 @@ except ImportError:
 			self._parser.add_option_group(optiongroup)
 			return _ArgumentGroup(optiongroup)
 
+		def parse_known_args(self, args=None, namespace=None):
+			return self._parser.parse_args(args, namespace)
+
+		def parse_args(self, args=None, namespace=None):
+			args, argv = self.parse_known_args(args, namespace)
+			if argv:
+				msg = _('unrecognized arguments: %s')
+				self.error(msg % ' '.join(argv))
+			return args
+
 	class _ArgumentGroup(object):
 		def __init__(self, optiongroup):
 			self.add_argument = optiongroup.add_option