From e7375481f380469cbcaae15ddb749be5783e1cc8 Mon Sep 17 00:00:00 2001
From: otya128 <otya128@users.noreply.github.com>
Date: Sun, 11 Dec 2016 18:48:52 +0900
Subject: [PATCH] Fix input

---
 SMILEBASIC/petitcomputer.d | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/SMILEBASIC/petitcomputer.d b/SMILEBASIC/petitcomputer.d
index 050faf0..ddf035d 100644
--- a/SMILEBASIC/petitcomputer.d
+++ b/SMILEBASIC/petitcomputer.d
@@ -1174,6 +1174,10 @@ class PetitComputer
         }
         void left()
         {
+            if (pos == 0)
+            {
+                return;
+            }
             pos--;
             if (console.CSRX == 0)
             {
@@ -1185,6 +1189,10 @@ class PetitComputer
         }
         void right()
         {
+            if (pos >= buffer.length)
+            {
+                return;
+            }
             pos++;
             console.CSRX++;
             if (console.CSRX == console.consoleWidthC)