# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@ens-lyon.org>
# Date 2013-01-07 16:16:24
# Node ID 59a9f18d458788b5829a0c43b69c8118a62e4ddb
# Parent  dd0b636b0b658546f9318d857a0f91e8f6587033

repoview: add a subset table

This will be used by branchmap collaboration. See inline documentation for more
details

diff --git a/mercurial/repoview.py b/mercurial/repoview.py
--- a/mercurial/repoview.py
+++ b/mercurial/repoview.py
@@ -21,6 +21,13 @@ def computeunserved(repo):
 
 # function to compute filtered set
 filtertable = {'unserved': computeunserved}
+### Nearest subset relation
+# Nearest subset of filter X is a filter Y so that:
+# * Y is included in X,
+# * X - Y is as small as possible.
+# This create and ordering used for branchmap purpose.
+# the ordering may be partial
+subsettable = {None: 'unserved'}
 
 def filteredrevs(repo, filtername):
     """returns set of filtered revision for this filter name"""