[PATCH 2 of 6] Provide a version independent way to use the set datatype

[Eric Hopper]

# HG changeset patch
# User Eric Hopper <hopper at omnifarious.org>
# Date 1181256552 25200
# Node ID d8f52bfc3b38809aff35efb8a34a6347ba228af7
# Parent  04f49562a1eb805adfa78349c64561a539538e6f
Provide a version independent way to use the set datatype.

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -15,6 +15,13 @@ from i18n import _
 from i18n import _
 import cStringIO, errno, getpass, popen2, re, shutil, sys, tempfile
 import os, threading, time, calendar, ConfigParser, locale, glob
+
+try:
+    hgset = set
+    hgfrozenset = frozenset
+except NameError, e:
+    from sets import Set as hgset
+    from sets import ImmutableSet as hgfrozenset
 
 try:
     _encoding = os.environ.get("HGENCODING") or locale.getpreferredencoding() \

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