Merge pull request #121 from wwboynton/master

defaulting to zero when calling out-of-bounds indices on @vis_lbreaks

lib/rbreadline.rb

@@ -2648,7 +2648,7 @@ module RbReadline
   end
   def vis_pos(line)
-    @vis_lbreaks[line]
+    @vis_lbreaks[line] || 0
   end
   def vis_line(line)