From c0f3b83319002965175a023f56964acedec05a73 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Payrard?= <cognominal@gmail.com>
Date: Sat, 10 Aug 2013 01:41:48 +0200
Subject: [PATCH 1/2] Add comment support at end of line

Unlike a whole comment line. A trailing comment does not appear in the
javascript source. That should be fixable but less urgent
---
 src/grammar.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/grammar.js b/src/grammar.js
index e3febbc..1dc784c 100644
--- a/src/grammar.js
+++ b/src/grammar.js
@@ -33,6 +33,8 @@ var grammar = {
         "line": [
             ["statement", "$$ = $1;"],
             ["expression", "$$ = $1;"],
+            ["statement COMMENT", "$$ = $1;"],
+            ["expression COMMENT", "$$ = $1;"],
             ["COMMENT", n("$$ = new yy.Comment($1);")]
         ],
         "block": [

From f4c6641c8ffb1b1b0b0db2a4f083189e96a8a125 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Payrard?= <cognominal@gmail.com>
Date: Thu, 15 Aug 2013 07:57:36 +0200
Subject: [PATCH 2/2] show a usage message for a unkown command

---
 src/node-repl.js | 67 ++++++++++++++++++++++++++++--------------------
 1 file changed, 39 insertions(+), 28 deletions(-)

diff --git a/src/node-repl.js b/src/node-repl.js
index 22f6f5f..f171b6d 100644
--- a/src/node-repl.js
+++ b/src/node-repl.js
@@ -49,6 +49,7 @@ var getFileContents = function(filename) {
     return source;
 };
 
+
 var nodeRepl = function(opts) {
     var readline = require('readline'),
         path = require('path'),
@@ -69,6 +70,16 @@ var nodeRepl = function(opts) {
     console.log(opts.info.author);
     console.log(":? for help");
 
+    var usage = function() {
+        colorLog(32, "Commands available from the prompt");
+        console.log(":l -- load and run an external file");
+        console.log(":q -- exit REPL");
+        console.log(":s -- show original code about identifier");
+        console.log(":t -- show the type of the identifier");
+        console.log(":? -- show help");
+    }
+
+
     var colorLog = function(color) {
         var args = [].slice.call(arguments, 1);
 
@@ -133,37 +144,37 @@ var nodeRepl = function(opts) {
                 break;
             case ":?":
                 // Help
-                colorLog(32, "Commands available from the prompt");
-                console.log(":l -- load and run an external file");
-                console.log(":q -- exit REPL");
-                console.log(":s -- show original code about identifier");
-                console.log(":t -- show the type of the identifier");
-                console.log(":? -- show help");
+                usage()
                 break;
             default:
-                // The line isn't a metacommand
-
-                // Remember the source if it's a binding
-                tokens = lexer.tokenise(line);
-                ast = parser.parse(tokens);
-                if (typeof ast.body[0] != 'undefined') {
-                    ast.body[0].accept({
-                        // Simple bindings.
-                        // E.g.: let x = 37
-                        visitLet: function(n) {
-                            sources[n.name] = n.value;
-                        },
-                        // Bindings that are actually functions.
-                        // E.g.: let f x = 37
-                        visitFunction: function(n) {
-                            sources[n.name] = n;
-                        }
-                    });
-                }
+                if (metacommand[0].substr(0, 1) == ':') {
+                    // The line isn't a known metacommand
+                    colorLog(33, "Command " + metacommand[0] + "is not defined")
+                    usage()
+                } else {
 
-                // Just eval it
-                compiled = compile(line, env, aliases, {nodejs: true, filename: ".", run: true});
-                break;
+                    // Remember the source if it's a binding
+                    tokens = lexer.tokenise(line);
+                    ast = parser.parse(tokens);
+                    if (typeof ast.body[0] != 'undefined') {
+                        ast.body[0].accept({
+                            // Simple bindings.
+                            // E.g.: let x = 37
+                            visitLet: function(n) {
+                                sources[n.name] = n.value;
+                            },
+                            // Bindings that are actually functions.
+                            // E.g.: let f x = 37
+                            visitFunction: function(n) {
+                                sources[n.name] = n;
+                            }
+                        });
+                    }
+    
+                    // Just eval it
+                    compiled = compile(line, env, aliases, {nodejs: true, filename: ".", run: true});
+                    break;
+                }
             }
 
             if(compiled) {