Use locale encoding to decode subprocess output // Resolve #2890

platformio/compat.py

@@ -17,6 +17,7 @@
 
 import inspect
 import json
+import locale
 import os
 import re
 import sys
@@ -30,6 +31,10 @@ def get_filesystem_encoding():
     return sys.getfilesystemencoding() or sys.getdefaultencoding()
 
 
+def get_locale_encoding():
+    return locale.getdefaultlocale()[1]
+
+
 def get_class_attributes(cls):
     attributes = inspect.getmembers(cls, lambda a: not (inspect.isroutine(a)))
     return {