From a2e2a9b72e90e3419ff792491cd30aba86d2d4e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20N=C3=BCcke?= <florian@nuecke.de>
Date: Tue, 12 Aug 2014 02:51:17 +0200
Subject: [PATCH] Fixed index out of bounds in term.isWide, closes #484.

---
 .../assets/opencomputers/loot/OpenOS/lib/term.lua          | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/main/resources/assets/opencomputers/loot/OpenOS/lib/term.lua b/src/main/resources/assets/opencomputers/loot/OpenOS/lib/term.lua
index 8428c2563..c02a77f1b 100644
--- a/src/main/resources/assets/opencomputers/loot/OpenOS/lib/term.lua
+++ b/src/main/resources/assets/opencomputers/loot/OpenOS/lib/term.lua
@@ -81,6 +81,13 @@ function term.setCursorBlink(enabled)
 end
 
 function term.isWide(x, y)
+  if not term.isAvailable() then
+    return false
+  end
+  local w, h = component.gpu.getResolution()
+  if x < 1 or x > w or y < 1 or y > h then
+    return false
+  end
   local char = component.gpu.get(x, y)
   if unicode.isWide(char) then
     -- The char at the specified position is a wide char.