From 8036c301a17ea5687adb372ecd2078303774693f Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Tue, 25 Jul 2017 16:48:30 -0700
Subject: [PATCH] address: fix isMixedCase.

---
 lib/primitives/address.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/primitives/address.js b/lib/primitives/address.js
index bade0c52..43c187d0 100644
--- a/lib/primitives/address.js
+++ b/lib/primitives/address.js
@@ -887,10 +887,16 @@ function isMixedCase(str) {
   for (let i = 0; i < str.length; i++) {
     let ch = str.charCodeAt(i);
 
-    if (ch & 32)
+    if (ch >= 0x30 && ch <= 0x39)
+      continue;
+
+    if (ch & 32) {
+      assert(ch >= 0x61 && ch <= 0x7a);
       lower = true;
-    else
+    } else {
+      assert(ch >= 0x41 && ch <= 0x5a);
       upper = true;
+    }
 
     if (lower && upper)
       return true;