--- prog~	2021-07-06 21:16:59.000000000 +0200
+++ prog	2022-07-28 19:07:57.699026766 +0200
@@ -72,7 +72,7 @@
 
 LC_NUMERIC
 decimal_point   "."
-thousands_sep   ","
+thousands_sep   "_"
 grouping        3;3
 END LC_NUMERIC