Add isIterateeCall check to _.split.

lodash.js

@@ -8505,8 +8505,8 @@
      * The guarded methods are:
      * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
      * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
-     * `sampleSize`, `slice`, `some`, `sortBy`, `take`, `takeRight`, `template`,
+     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
-     * `trim`, `trimEnd`, `trimStart`, and `words`
+     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
      *
      * @static
      * @memberOf _
@@ -13561,6 +13561,9 @@
      */
     function split(string, separator, limit) {
       string = toString(string);
+      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
+        separator = limit = undefined;
+      }
       if (string && (
             typeof separator == 'string' ||
             (separator != null && !isRegExp(separator))

test/test.js

@@ -20115,6 +20115,15 @@
       assert.deepEqual(actual, expected);
     });
 
+    QUnit.test('should work as an iteratee for methods like `_.map`', function(assert) {
+      assert.expect(1);
+
+      var strings = ['abc', 'def', 'ghi'],
+          actual = lodashStable.map(strings, _.split);
+
+      assert.deepEqual(actual, [['abc'], ['def'], ['ghi']]);
+    });
+
     QUnit.test('should allow mixed string and array prototype methods', function(assert) {
       assert.expect(1);