From be750cbc9454b30f93262ecdfb44afc334890a4a Mon Sep 17 00:00:00 2001
From: Joe Nicholson <joe@rufilla.com>
Date: Sat, 12 Nov 2016 20:30:10 +0000
Subject: [PATCH 1/2] Correct read function to stop trimming of final character
 of user input, correcting loss of final character during INPUT A$;PRINT A$

---
 lib/IOInterface.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/IOInterface.js b/lib/IOInterface.js
index 7d04abc..d0a21fd 100644
--- a/lib/IOInterface.js
+++ b/lib/IOInterface.js
@@ -103,7 +103,7 @@ IOInterface.prototype.readln = function(callback) {
     this.read(function(char, value, cancel) {
         if (char === "\n") {
             cancel();
-            var result = value.substring(0, value.length - 2);
+            var result = value.substring(0, value.length - 1);
             callback(result);
         }
     });

From e77f8f902eb017ea729e17c6e7f89202d747c723 Mon Sep 17 00:00:00 2001
From: Joe Nicholson <joe@rufilla.com>
Date: Sun, 13 Nov 2016 15:31:16 +0000
Subject: [PATCH 2/2] Add SHELL command to allow BASIC to access the shell

---
 lib/parser/commands/ShellCommand.js | 64 +++++++++++++++++++++++++++++
 lib/parser/commands/index.js        |  3 ++
 2 files changed, 67 insertions(+)
 create mode 100644 lib/parser/commands/ShellCommand.js

diff --git a/lib/parser/commands/ShellCommand.js b/lib/parser/commands/ShellCommand.js
new file mode 100644
index 0000000..826c94c
--- /dev/null
+++ b/lib/parser/commands/ShellCommand.js
@@ -0,0 +1,64 @@
+/* **************************************************************************
+   Additional Command to Execute Shell Command from BASIC
+   Joe Nicholson Rufilla Ltd.
+   **************************************************************************
+*/
+
+var statements = require('../statements');
+var SyntaxError = require('../SyntaxError');
+var rl = require('../../IOInterface').getDefault();
+
+var exec = require('child_process').exec;
+
+/**
+ * Shells execution
+ *
+ * @param {String} args The arguments to the command
+ * @param {Function} define
+ * @constructor
+ */
+function ShellCommand(args, define) {
+    if (args.length) {
+        this.message = new statements.ExpressionStatement(args, define);
+        if (this.message.error) throw this.message.error;
+    } else this.message = new statements.StringStatement("[<< Shelld, Press RETURN to Continue >>]");
+}
+
+/**
+ * Converts the command arguments to a string
+ *
+ * @returns {string}
+ */
+ShellCommand.prototype.toString = function() {
+    return this.message.toString();
+};
+
+/**
+ * Converts the command to JSON
+ *
+ * @returns {Object}
+ */
+ShellCommand.prototype.toJSON = function() {
+    return {
+        message: this.message.toJSON()
+    };
+};
+
+/**
+ * Executes the command
+ *
+ * @param {ExecutionContext} data
+ * @param {Function} next
+ */
+ShellCommand.prototype.execute = function(data, next) {
+    var message = this.message.execute(data);
+    data.validate(message, 'string');
+
+    // Executre the shell command
+    exec(message, function (error, stdout, stderr) { 
+        console.log(stdout);
+        next();        
+    });
+};
+
+module.exports = ShellCommand;
\ No newline at end of file
diff --git a/lib/parser/commands/index.js b/lib/parser/commands/index.js
index 42abe6b..0ba2087 100644
--- a/lib/parser/commands/index.js
+++ b/lib/parser/commands/index.js
@@ -21,6 +21,9 @@ exports.restore             = require('./RestoreCommand');
 exports.data                = require('./DataCommand');
 exports.read                = require('./ReadCommand');
 
+// Added by Joe
+exports.shell               = require('./ShellCommand');
+
 // Graphic commands
 exports.color               = require('./ColorCommand');
 exports.tcolor              = require('./TcolorCommand');