# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 2014-10-10 21:27:05
# Node ID e02b16f496f28193253082aa4d40843a6a83afda
# Parent  4584eec9aead432d5b66c5c85ecaf16609c31a38

match: check if an object is a baseset using `isascending` instead of `set`

The `set()` method is going away.

diff --git a/mercurial/revset.py b/mercurial/revset.py
--- a/mercurial/revset.py
+++ b/mercurial/revset.py
@@ -2064,7 +2064,7 @@ def match(ui, spec, repo=None):
         tree = findaliases(ui, tree)
     weight, tree = optimize(tree, True)
     def mfunc(repo, subset):
-        if util.safehasattr(subset, 'set'):
+        if util.safehasattr(subset, 'isascending'):
             result = getset(repo, subset, tree)
         else:
             result = getset(repo, baseset(subset), tree)