From 98eccf223afda8dcaf97d3bacd7696493120d511 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Fri, 25 Jan 2013 00:20:55 -0800
Subject: [PATCH] Simplify `null`/`undefined` check in `_.isEqual` and edit
 `_.cloneDeep` docs.

Former-commit-id: 62455ba83df04318856fbc889743f44101b24fe3
---
 doc/README.md            |  2 +-
 lodash.js                | 10 +++++-----
 lodash.min.js            |  2 +-
 lodash.underscore.js     |  8 ++++----
 lodash.underscore.min.js |  2 +-
 5 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/doc/README.md b/doc/README.md
index bd472e767..9fe503e78 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -1984,7 +1984,7 @@ deep[0] === stooges[0];
 
 Creates a deep clone of `value`. Functions and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and objects created by constructors other than `Object` are cloned to plain `Object` objects.
 
-Note: This function is loosely based on the structured clone algorithm. See http://www.w3.org/TR/html5/common-dom-interfaces.html#internal-structured-cloning-algorithm.
+Note: This function is loosely based on the structured clone algorithm. See http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm.
 
 #### Arguments
 1. `value` *(Mixed)*: The value to deep clone.
diff --git a/lodash.js b/lodash.js
index b653d54e0..bbf5d29f2 100644
--- a/lodash.js
+++ b/lodash.js
@@ -653,7 +653,7 @@
    *
    * @private
    * @param {Object} [options1, options2, ...] The compile options object(s).
-   *  arrays - A boolean to specify support for iterating arrays and array-like objects.
+   *  arrays - A string of code to determine if the iteratee is an array or array-like.
    *  useHas - A boolean to specify using `hasOwnProperty` checks in the object loop.
    *  args - A string of comma separated arguments the iteration function will accept.
    *  top - A string of code to execute before the iteration branches.
@@ -672,7 +672,7 @@
       'shadowed': shadowed,
 
       // iterator options
-      'arrays': "isArray(iteratee)",
+      'arrays': 'isArray(iteratee)',
       'bottom': '',
       'loop': '',
       'top': '',
@@ -1129,7 +1129,7 @@
    * constructors other than `Object` are cloned to plain `Object` objects.
    *
    * Note: This function is loosely based on the structured clone algorithm.
-   * See http://www.w3.org/TR/html5/common-dom-interfaces.html#internal-structured-cloning-algorithm.
+   * See http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm.
    *
    * @static
    * @memberOf _
@@ -1366,9 +1366,9 @@
       // treat `+0` vs. `-0` as not equal
       return a !== 0 || (1 / a == 1 / b);
     }
-    // a strict comparison is necessary because `null == undefined`
+    // exit early for unlike `null` or `undefined` values
     if (a == null || b == null) {
-      return a === b;
+      return false;
     }
     // compare [[Class]] names
     var className = toString.call(a),
diff --git a/lodash.min.js b/lodash.min.js
index 96db0e590..064be52c5 100644
--- a/lodash.min.js
+++ b/lodash.min.js
@@ -9,7 +9,7 @@
 for(var u=0;7>u;u++)e+="i='"+t.j[u]+"';if(","constructor"==t.j[u]&&(e+="!(f&&f.prototype===m)&&"),e+="h.call(m,i)){"+t.g+"}"}return(t.b||t.h)&&(e+="}"),e+=t.c+";return u",r("e,h,j,k,l,q,o,t","return function("+n+"){"+e+"}")(a,wt,h,fr,A,nr,Nt,xt)}function c(n){return"\\"+tr[n]}function l(n){return lr[n]}function p(n){return typeof n.toString!="function"&&typeof(n+"")=="string"}function s(){}function v(n,t,r){t||(t=0),typeof r=="undefined"&&(r=n?n.length:0);var e=-1;r=r-t||0;for(var u=Array(0>r?0:r);++e<r;)u[e]=n[t+e];
 return u}function g(n){return pr[n]}function h(n){return Ot.call(n)==qt}function y(n){var t=!1;if(!n||typeof n!="object"||h(n))return t;var r=n.constructor;return!j(r)&&(!Wt||!p(n))||r instanceof r?Y?(ir(n,function(n,r,e){return t=!wt.call(e,r),!1}),!1===t):(ir(n,function(n,r){t=r}),!1===t||wt.call(n,t)):t}function m(n){var t=[];return ar(n,function(n,r){t.push(r)}),t}function _(n,t,r,e,u){if(null==n)return n;if(r&&(t=!1),r=x(n)){var o=Ot.call(n);if(!Yt[o]||Wt&&p(n))return n;var i=fr(n)}if(!r||!t)return r?i?v(n):sr({},n):n;
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diff --git a/lodash.underscore.js b/lodash.underscore.js
index befbe8e8b..48050e60d 100644
--- a/lodash.underscore.js
+++ b/lodash.underscore.js
@@ -415,7 +415,7 @@
    *
    * @private
    * @param {Object} [options1, options2, ...] The compile options object(s).
-   *  arrays - A boolean to specify support for iterating arrays and array-like objects.
+   *  arrays - A string of code to determine if the iteratee is an array or array-like.
    *  useHas - A boolean to specify using `hasOwnProperty` checks in the object loop.
    *  args - A string of comma separated arguments the iteration function will accept.
    *  top - A string of code to execute before the iteration branches.
@@ -433,7 +433,7 @@
       'shadowed': shadowed,
 
       // iterator options
-      'arrays': "isArray(iteratee)",
+      'arrays': 'isArray(iteratee)',
       'bottom': '',
       'loop': '',
       'top': '',
@@ -1078,9 +1078,9 @@
       // treat `+0` vs. `-0` as not equal
       return a !== 0 || (1 / a == 1 / b);
     }
-    // a strict comparison is necessary because `null == undefined`
+    // exit early for unlike `null` or `undefined` values
     if (a == null || b == null) {
-      return a === b;
+      return false;
     }
     // compare [[Class]] names
     var className = toString.call(a),
diff --git a/lodash.underscore.min.js b/lodash.underscore.min.js
index 3c20beedd..97fc48332 100644
--- a/lodash.underscore.min.js
+++ b/lodash.underscore.min.js
@@ -7,7 +7,7 @@
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