RustPython
diff --git a/‎Lib/_sre.py
Lines changed: 1285 additions & 0 deletions b/‎Lib/_sre.py
Lines changed: 1285 additions & 0 deletions
diff --git a/‎Lib/argparse.py
Lines changed: 5 additions & 9 deletions b/‎Lib/argparse.py
Lines changed: 5 additions & 9 deletions
@@ -328,18 +328,14 @@ def _format_usage(self, usage, actions, groups, prefix):
 
                 # break usage into wrappable parts
                 part_regexp = (
-                    r'(\(.*?\)+|\[.*?\]+|\S+)(?:\s|$)'
+                    r'\(.*?\)+(?=\s|$)|'
+                    r'\[.*?\]+(?=\s|$)|'
+                    r'\S+'
                 )
-                # FIXME: use regex below once we're compatible with sre
-                # part_regexp = (
-                #     r'\(.*?\)+(?=\s|$)|'
-                #     r'\[.*?\]+(?=\s|$)|'
-                #     r'\S+'
-                # )
                 opt_usage = format(optionals, groups)
                 pos_usage = format(positionals, groups)
-                opt_parts = list(map(lambda t: t[0], _re.findall(part_regexp, opt_usage)))
-                pos_parts = list(map(lambda t: t[0], _re.findall(part_regexp, pos_usage)))
+                opt_parts = _re.findall(part_regexp, opt_usage)
+                pos_parts = _re.findall(part_regexp, pos_usage)
                 assert ' '.join(opt_parts) == opt_usage
                 assert ' '.join(pos_parts) == pos_usage