From 332472e84b786d715fcca8fedf78d6fef2c21ff3 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Sun, 28 Jan 2018 00:17:55 +0200
Subject: [PATCH] Save temporary file in unicode for INO2CPP

---
 platformio/builder/tools/piomisc.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/platformio/builder/tools/piomisc.py b/platformio/builder/tools/piomisc.py
index 7c08237f..2c61c1db 100644
--- a/platformio/builder/tools/piomisc.py
+++ b/platformio/builder/tools/piomisc.py
@@ -15,6 +15,7 @@
 from __future__ import absolute_import
 
 import atexit
+import io
 import re
 import sys
 from os import environ, remove, walk
@@ -84,7 +85,7 @@ class InoToCPPConverter(object):
 
     def _gcc_preprocess(self, contents, out_file):
         tmp_path = mkstemp()[1]
-        with open(tmp_path, "w") as fp:
+        with io.open(tmp_path, mode="w", encoding="utf-8") as fp:
             fp.write(contents)
         self.env.Execute(
             self.env.VerboseAction(