From 658daf93e295dd00048d15001335f58f91e679f6 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sun, 10 Jul 2016 22:06:57 +0300
Subject: [PATCH] Fix 'vertical-motion' in non-interactive sessions

* src/indent.c (Fvertical_motion): Don't return uninitialized
value in non-interactive session.  This fixes random errors in
batch mode, see
http://lists.gnu.org/archive/html/emacs-devel/2016-06/msg00609.html
and
http://lists.gnu.org/archive/html/emacs-devel/2016-07/msg00500.html
for the details.
---
 src/indent.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/indent.c b/src/indent.c
index 0ef8903501d..578dac83df5 100644
--- a/src/indent.c
+++ b/src/indent.c
@@ -2027,6 +2027,7 @@ whether or not it is currently displayed in some window.  */)
       struct position pos;
       pos = *vmotion (PT, PT_BYTE, XINT (lines), w);
       SET_PT_BOTH (pos.bufpos, pos.bytepos);
+      it.vpos = pos.vpos;
     }
   else
     {
-- 
2.39.2