Keep file permissions on update rename workaround

Author: shortcutme

update.py

@@ -2,6 +2,7 @@
 import sys
 import json
 import re
+import shutil
 
 
 def update():
@@ -94,13 +95,14 @@ def update():
             num_ok += 1
         except Exception as err:
             try:
-                print("Error writing: %s. Renaming old file to avoid lock on Windows..." % err)
+                print("Error writing: %s. Renaming old file as workaround..." % err)
                 path_to_tmp = path_to + "-old"
                 if os.path.isfile(path_to_tmp):
                     os.unlink(path_to_tmp)
                 os.rename(path_to, path_to_tmp)
                 num_rename += 1
                 open(path_to, 'wb').write(data)
+                shutil.copymode(path_to_tmp, path_to)  # Copy permissions
                 print("Write done after rename!")
                 num_ok += 1
             except Exception as err: