Do not exit when an option in setup.cfg / tox.ini is not recognized

1 files changed, 3 insertions, 4 deletions

diff --git a/pep8.py b/pep8.py
index 0671ac7..bc91137 100755
--- a/pep8.py
+++ b/pep8.py
@@ -1837,12 +1837,11 @@ def read_config(options, args, arglist, parser):
 
         # Second, parse the configuration
         for opt in config.options(pep8_section):
+            if opt.replace('_', '-') not in parser.config_options:
+                print("  unknown option '%s' ignored" % opt)
+                continue
             if options.verbose > 1:
                 print("  %s = %s" % (opt, config.get(pep8_section, opt)))
-            if opt.replace('_', '-') not in parser.config_options:
-                print("Unknown option: '%s'\n  not in [%s]" %
-                      (opt, ' '.join(parser.config_options)))
-                sys.exit(1)
             normalized_opt = opt.replace('-', '_')
             opt_type = option_list[normalized_opt]
             if opt_type in ('int', 'count'):