From 1538d4060339461609f8a513cf4933a4de4fa8df Mon Sep 17 00:00:00 2001
From: Alexey Kachayev <kachayev@gmail.com>
Date: Sat, 31 Mar 2018 11:03:50 +0300
Subject: [PATCH] AbstractMap to handle cons with java Map correctly

---
 src/potemkin/collections.clj | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/potemkin/collections.clj b/src/potemkin/collections.clj
index 9b541b4..ae2c031 100644
--- a/src/potemkin/collections.clj
+++ b/src/potemkin/collections.clj
@@ -66,8 +66,14 @@
          (= x (into {} this))))
 
   (cons [this o]
-    (if (map? o)
+    (cond
+      (map? o)
       (reduce #(apply assoc %1 %2) this o)
+
+      (instance? java.util.Map o)
+      (reduce #(apply assoc %1 %2) this (into {} o))
+
+      :else
       (if-let [[k v] (seq o)]
         (assoc this k v)
         this)))