From 58ce97c0b43ff3a4bb880d0ccf982bd8ad9322df Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Mon, 20 Jan 2014 11:33:31 -0800
Subject: [PATCH] Ensure `_.flatten` works with `_.map` in underscore builds.

---
 dist/lodash.underscore.js     |  6 ++++-
 dist/lodash.underscore.min.js | 45 ++++++++++++++++++-----------------
 2 files changed, 28 insertions(+), 23 deletions(-)

diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index a8762dd31..b2b90bf1e 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -1179,7 +1179,11 @@
    * _.flatten(characters, 'pets');
    * // => ['hoppy', 'baby puss', 'dino']
    */
-  function flatten(array, isShallow) {
+  function flatten(array, isShallow, guard) {
+    var type = typeof isShallow;
+    if ((type == 'number' || type == 'string') && guard && guard[isShallow] === array) {
+      isShallow = false;
+    }
     return baseFlatten(array, isShallow);
   }
 
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index db4dea59b..6fa1588d2 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -5,35 +5,36 @@
  */
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