hgext/churn.py

--- a/hgext/churn.py	Sat Aug 22 19:40:15 2009 +0200
+++ b/hgext/churn.py	Wed Aug 26 13:05:51 2009 +0200
@@ -148,7 +148,8 @@
     sortkey = ((not opts.get('sort')) and (lambda x: -x[1]) or None)
     rate.sort(key=sortkey)
 
-    maxcount = float(max([v for k, v in rate]))
+    # Be careful not to have a zero maxcount (issue833)
+    maxcount = float(max([v for k, v in rate])) or 1.0
     maxname = max([len(k) for k, v in rate])
 
     ttywidth = util.termwidth()