Normalize keys in configuration file

Use the same implicit rules used by optparse.

1 files changed, 3 insertions, 2 deletions

diff --git a/pep8.py b/pep8.py
index 58deffe..00b2d9b 100755
--- a/pep8.py
+++ b/pep8.py
@@ -1742,7 +1742,8 @@ def read_config(options, args, arglist, parser):
 
         # Second, parse the configuration
         for opt in config.options('pep8'):
-            opt_type = option_list.get(opt)
+            normalized_opt = opt.replace('-', '_')
+            opt_type = option_list.get(normalized_opt)
             if not opt_type:
                 print('Unknown option: %s' % opt)
             elif opt_type in ('int', 'count'):
@@ -1752,7 +1753,7 @@ def read_config(options, args, arglist, parser):
             else:
                 assert opt_type in ('store_true', 'store_false')
                 value = config.getboolean('pep8', opt)
-            setattr(options, opt, value)
+            setattr(options, normalized_opt, value)
 
         # Third, overwrite with the command-line options
         options, _ = parser.parse_args(arglist, values=options)