# HG changeset patch
# User Mike Miller <mtmiller@octave.org>
# Date 1470988459 25200
# Node ID a511d43e1fc000fc033b8881b99fec086382f8d3
# Parent  2461b86cb8fb49690605062a52e0d41e685ea66b
pyobject.subsref: avoid attempting to index on empty index range

* @pyobject/subsref.m: Avoid passing a bad index into __getitem__ when
indexing either a{:} on an empty sequence or a{[]} on any sequence.

diff -r 2461b86cb8fb -r a511d43e1fc0 @pyobject/subsref.m
--- a/@pyobject/subsref.m	Fri Aug 12 00:45:39 2016 -0700
+++ b/@pyobject/subsref.m	Fri Aug 12 00:54:19 2016 -0700
@@ -77,7 +77,9 @@
       endif
 
       gi = pycall ("getattr", x, "__getitem__");   # x.__getitem__
-      if (isnumeric (ind) && length (ind) > 1)
+      if (isempty (ind) && x_is_sequence)
+        r = pyeval ("None");
+      elseif (isnumeric (ind) && length (ind) > 1)
         r = {};
         for k = 1:length (ind)
           r(end+1) = pycall (gi, ind(k));