From 1f134e445c8aeadc312c34432505d900a958de68 Mon Sep 17 00:00:00 2001
From: Anders Iver Gjermo <ai@gjermo.com>
Date: Sun, 23 Feb 2014 02:06:57 +0100
Subject: [PATCH] catch NULL input in interpreter_chat_mode

---
 interface.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/interface.c b/interface.c
index 3f2067d..a7b468c 100644
--- a/interface.c
+++ b/interface.c
@@ -560,7 +560,8 @@ void work_modifier (const char *s, int l) {
 
 
 void interpreter_chat_mode (char *line) {
-  if (!strncmp (line, "/exit", 5) || !strncmp (line, "/quit", 5)) {
+  if (line == NULL || /* EOF received */
+          !strncmp (line, "/exit", 5) || !strncmp (line, "/quit", 5)) {
     in_chat_mode = 0;
     update_prompt ();
     return;