diff -r 8d344bc72e68 -r 461573aa02ef hgext/churn.py
--- a/hgext/churn.py	Sun Sep 03 16:23:18 2006 -0400
+++ b/hgext/churn.py	Sun Sep 03 16:25:41 2006 -0400
@@ -14,7 +14,7 @@
 from mercurial.demandload import *
 from mercurial.i18n import gettext as _
 demandload(globals(), 'time sys signal os')
-demandload(globals(), 'mercurial:hg,mdiff,fancyopts,commands,ui,util,templater')
+demandload(globals(), 'mercurial:hg,mdiff,fancyopts,commands,ui,util,templater,node')
 
 def __gather(ui, repo, node1, node2):
     def dirtywork(f, mmap1, mmap2):
@@ -82,6 +82,10 @@
         node2    = cl.node(rev)
         node1    = cl.parents(node2)[0]
 
+	if cl.parents(node2)[1] != node.nullid:
+            ui.note(_('Revision %d is a merge, ignoring...\n') % (rev,))
+	    continue
+
         who, lines = __gather(ui, repo, node1, node2)
 
         # remap the owner if possible