hgext/notify.py

--- a/hgext/notify.py	Mon Oct 05 12:37:26 2015 -0400
+++ b/hgext/notify.py	Mon Oct 05 10:43:16 2015 -0600
@@ -406,6 +406,8 @@
             return
         count += 1
         n.diff(ctx)
+        if not author:
+            author = ctx.user()
 
     data += ui.popbuffer()
     fromauthor = ui.config('notify', 'fromauthor')