diff --git a/lib/command.js b/lib/command.js
index f81925e0..676aa389 100644
--- a/lib/command.js
+++ b/lib/command.js
@@ -69,10 +69,10 @@
               return fs.stat(source, function(err, stats) {
                 if (stats.isDirectory()) {
                   return fs.readdir(source, function(err, files) {
-                    var _i2, _len2, _ref3, _result2, file;
+                    var _j, _len2, _ref3, _result2, file;
                     _result2 = []; _ref3 = files;
-                    for (_i2 = 0, _len2 = _ref3.length; _i2 < _len2; _i2++) {
-                      file = _ref3[_i2];
+                    for (_j = 0, _len2 = _ref3.length; _j < _len2; _j++) {
+                      file = _ref3[_j];
                       _result2.push(compile(path.join(source, file)));
                     }
                     return _result2;
diff --git a/lib/grammar.js b/lib/grammar.js
index 01f367c6..c350f41d 100644
--- a/lib/grammar.js
+++ b/lib/grammar.js
@@ -1,5 +1,5 @@
 (function() {
-  var Parser, _i, _i2, _len, _len2, _ref, _ref2, _ref3, _result, alt, alternatives, grammar, name, o, operators, token, tokens, unwrap;
+  var Parser, _i, _j, _len, _len2, _ref, _ref2, _ref3, _result, alt, alternatives, grammar, name, o, operators, token, tokens, unwrap;
   var __hasProp = Object.prototype.hasOwnProperty;
   Parser = require('jison').Parser;
   unwrap = /function\s*\(\)\s*\{\s*return\s*([\s\S]*);\s*\}/;
@@ -622,8 +622,8 @@
         alt = _ref2[_i];
         _result.push((function() {
           _ref3 = alt[0].split(' ');
-          for (_i2 = 0, _len2 = _ref3.length; _i2 < _len2; _i2++) {
-            token = _ref3[_i2];
+          for (_j = 0, _len2 = _ref3.length; _j < _len2; _j++) {
+            token = _ref3[_j];
             if (!(grammar[token])) {
               tokens.push(token);
             }
diff --git a/lib/nodes.js b/lib/nodes.js
index 896ade10..a6501024 100644
--- a/lib/nodes.js
+++ b/lib/nodes.js
@@ -122,7 +122,7 @@
       return '\n' + idt + (override || this["class"]) + children;
     };
     BaseNode.prototype.eachChild = function(func) {
-      var _i, _i2, _len, _len2, _ref2, _ref3, _result, attr, child;
+      var _i, _j, _len, _len2, _ref2, _ref3, _result, attr, child;
       if (!(this.children)) {
         return null;
       }
@@ -131,8 +131,8 @@
         attr = _ref2[_i];
         if (this[attr]) {
           _ref3 = flatten([this[attr]]);
-          for (_i2 = 0, _len2 = _ref3.length; _i2 < _len2; _i2++) {
-            child = _ref3[_i2];
+          for (_j = 0, _len2 = _ref3.length; _j < _len2; _j++) {
+            child = _ref3[_j];
             if (func(child) === false) {
               return null;
             }
@@ -1774,7 +1774,7 @@
       return this;
     };
     SwitchNode.prototype.compileNode = function(o) {
-      var _i, _i2, _len, _len2, _ref2, _ref3, block, code, condition, conditions, exprs, idt, pair;
+      var _i, _j, _len, _len2, _ref2, _ref3, block, code, condition, conditions, exprs, idt, pair;
       idt = (o.indent = this.idt(1));
       o.top = true;
       code = ("" + (this.tab) + "switch (" + (this.subject.compile(o)) + ") {");
@@ -1786,8 +1786,8 @@
         block = _ref3[1];
         exprs = block.expressions;
         _ref3 = flatten([conditions]);
-        for (_i2 = 0, _len2 = _ref3.length; _i2 < _len2; _i2++) {
-          condition = _ref3[_i2];
+        for (_j = 0, _len2 = _ref3.length; _j < _len2; _j++) {
+          condition = _ref3[_j];
           if (this.tags.subjectless) {
             condition = new OpNode('!!', new ParentheticalNode(condition));
           }
diff --git a/lib/optparse.js b/lib/optparse.js
index 5b63a8ad..3ffd4ebc 100755
--- a/lib/optparse.js
+++ b/lib/optparse.js
@@ -94,7 +94,7 @@
     };
   };
   normalizeArguments = function(args) {
-    var _i, _i2, _len, _len2, _ref, _ref2, arg, l, match, result;
+    var _i, _j, _len, _len2, _ref, _ref2, arg, l, match, result;
     args = args.slice(0);
     result = [];
     _ref = args;
@@ -102,8 +102,8 @@
       arg = _ref[_i];
       if (match = arg.match(MULTI_FLAG)) {
         _ref2 = match[1].split('');
-        for (_i2 = 0, _len2 = _ref2.length; _i2 < _len2; _i2++) {
-          l = _ref2[_i2];
+        for (_j = 0, _len2 = _ref2.length; _j < _len2; _j++) {
+          l = _ref2[_j];
           result.push('-' + l);
         }
       } else {
diff --git a/lib/scope.js b/lib/scope.js
index 6719df37..15fbd2de 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -70,7 +70,7 @@
       return !!(this.parent && this.parent.check(name));
     };
     Scope.prototype.temporary = function(type, index) {
-      return '_' + type + (index > 1 ? index : '');
+      return type.length > 1 ? '_' + type + (index > 1 ? index : '') : '_' + (index + parseInt(type, 36)).toString(36).replace(/\d/g, 'a');
     };
     Scope.prototype.freeVariable = function(type) {
       var index, temp;