# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@logilab.fr>
# Date 1347629789 -7200
# Node ID b1bdcb4506defef0e857e2710633f7686d8034a5
# Parent  897f6da2314ed3871b05282cf5f42531f2b872f2
hg prune: prevent empty call

diff -r 897f6da2314e -r b1bdcb4506de hgext/evolve.py
--- a/hgext/evolve.py	Wed Sep 12 14:24:23 2012 +0200
+++ b/hgext/evolve.py	Fri Sep 14 15:36:29 2012 +0200
@@ -1722,6 +1722,8 @@
         try:
             new = set(noderange(repo, opts['new']))
             targetnodes = set(noderange(repo, revs))
+            if not targetnodes:
+                raise util.Abort('nothing to prune')
             if new:
                 sucs = tuple(repo[n] for n in new)
             else: