--- a/mercurial/fileset.py Sat May 06 04:51:25 2017 +0530
+++ b/mercurial/fileset.py Fri Feb 10 16:56:29 2017 -0800
@@ -37,7 +37,7 @@
"end": (0, None, None, None, None),
}
-keywords = set(['and', 'or', 'not'])
+keywords = {'and', 'or', 'not'}
globchars = ".*{}[]?/\\_"