From 9a47164c46cdbb7bc45edd639900201b19c63f5b Mon Sep 17 00:00:00 2001
From: Alberto Griggio <agriggio@users.noreply.github.com>
Date: Sat, 6 May 2017 21:21:07 +0200
Subject: [PATCH] use the LANG env var (if set) to determine the system
 language on Linux/Mac

Candidate fix for #3864
---
 rtgui/multilangmgr.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rtgui/multilangmgr.cc b/rtgui/multilangmgr.cc
index 4c0b78fc9..d8a619292 100644
--- a/rtgui/multilangmgr.cc
+++ b/rtgui/multilangmgr.cc
@@ -196,7 +196,8 @@ Glib::ustring MultiLangMgr::getOSUserLanguage ()
 #elif defined (__linux__) || defined (__APPLE__)
 
     // Query the current locale and force decimal point to dot.
-    if (const char* locale = setlocale (LC_CTYPE, "")) {
+    const char *locale = getenv("LANG");
+    if (locale || (locale = setlocale (LC_CTYPE, ""))) {
         langName = localeToLang (locale);
     }