--- a/hgext/blackbox.py Sun Oct 22 23:52:22 2017 +0530 +++ b/hgext/blackbox.py Sun Oct 22 23:52:47 2017 +0530 @@ -226,7 +226,7 @@ if not repo.vfs.exists('blackbox.log'): return - limit = opts.get('limit') + limit = opts.get(r'limit') fp = repo.vfs('blackbox.log', 'r') lines = fp.read().split('\n')