add escape/unescape per http://nodejs.org/api/querystring.html

decode.js

@@ -64,8 +64,8 @@ module.exports = function(qs, sep, eq, options) {
       vstr = '';
     }
 
-    k = decodeURIComponent(kstr);
-    v = decodeURIComponent(vstr);
+    k = this.unescape(kstr);
+    v = this.unescape(vstr);
 
     if (!hasOwnProperty(obj, k)) {
       obj[k] = v;

encode.js

@@ -38,6 +38,7 @@ var stringifyPrimitive = function(v) {
 };
 
 module.exports = function(obj, sep, eq, name) {
+  var that = this;
   sep = sep || '&';
   eq = eq || '=';
   if (obj === null) {
@@ -46,19 +47,19 @@ module.exports = function(obj, sep, eq, name) {
 
   if (typeof obj === 'object') {
     return Object.keys(obj).map(function(k) {
-      var ks = encodeURIComponent(stringifyPrimitive(k)) + eq;
+      var ks = that.escape(stringifyPrimitive(k)) + eq;
       if (Array.isArray(obj[k])) {
         return obj[k].map(function(v) {
-          return ks + encodeURIComponent(stringifyPrimitive(v));
+          return ks + that.escape(stringifyPrimitive(v));
         }).join(sep);
       } else {
-        return ks + encodeURIComponent(stringifyPrimitive(obj[k]));
+        return ks + that.escape(stringifyPrimitive(obj[k]));
       }
     }).join(sep);
 
   }
 
   if (!name) return '';
-  return encodeURIComponent(stringifyPrimitive(name)) + eq +
-         encodeURIComponent(stringifyPrimitive(obj));
+  return that.escape(stringifyPrimitive(name)) + eq +
+          that.escape(stringifyPrimitive(obj));
 };

escape.js

@@ -0,0 +1,24 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+
+module.exports = encodeURIComponent;

index.js

@@ -1,4 +1,13 @@
 'use strict';
 
-exports.decode = exports.parse = require('./decode');
-exports.encode = exports.stringify = require('./encode');
+module.exports = (function () {
+	var methods = {};
+
+	methods.decode = methods.parse = require('./decode');
+	methods.encode = methods.stringify = require('./encode');
+	methods.escape = require('./escape');
+	methods.unescape = require('./unescape');
+
+	return methods;
+}());
+

test/index.js

@@ -208,3 +208,29 @@ exports['test nested in colon'] = function(assert) {
 
   assert.deepEqual({}, qs.parse(), 'parse undefined');
 };
+
+exports['test stringify() with escape() override'] = function(assert) {
+  var original = qs.escape;
+  qs.escape = function (value) { return value; };
+  var f = qs.stringify({a: 'a :'});
+  assert.equal(f, 'a=a :' , 'stringify with escape() override"');
+  qs.escape = original;
+};
+
+exports['test escape()'] = function(assert) {
+  var f = qs.escape('a :');
+  assert.equal(f, 'a%20%3A', 'escape "a :"');
+};
+
+exports['test parse() with unescape() override'] = function(assert) {
+  var original = qs.unescape;
+  qs.unescape = function (value) { return 'static'; };
+  var f = qs.parse('a=a :');
+  assert.deepEqual(f, {static: 'static'}, 'unescape "a :" with override"');
+  qs.unescape = original;
+};
+
+exports['test unescape()'] = function(assert) {
+  var f = qs.unescape('a%20%3A');
+  assert.equal(f, 'a :', 'unescape "a :"');
+};

unescape.js

@@ -0,0 +1,24 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'use strict';
+
+module.exports = decodeURIComponent;