# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@fb.com>
# Date 1422649773 0
# Node ID 9e3f332f7630e4ecfae17fc7a633324dd797247a
# Parent  af9fd422adbbb493c11a1e16d8bd05be9579a74a
discovery: filter null from the discovery revset

If there is nothing in common, common will be "null" and the revset will now
returns "-1" crashing the discovery process. We filter out the null revision to
prevent that.

diff -r af9fd422adbb -r 9e3f332f7630 hgext/evolve.py
--- a/hgext/evolve.py	Fri Jan 30 19:01:23 2015 +0000
+++ b/hgext/evolve.py	Fri Jan 30 20:29:33 2015 +0000
@@ -2575,7 +2575,7 @@
     cl = pullop.repo.changelog
     remote = pullop.remote
     unfi = repo.unfiltered()
-    revs = unfi.revs('::%ln', pullop.common)
+    revs = unfi.revs('::(%ln - null)', pullop.common)
     common = [nullid]
     if remote.capable('_evoext_obshash_0'):
         obsexcmsg(repo.ui, "looking for common markers in %i nodes\n"