From 2953b1cfb01b7b752521bfd3a335b6528abf73a2 Mon Sep 17 00:00:00 2001
From: DjLegolas <djlegolas@protonmail.com>
Date: Thu, 2 May 2024 01:23:51 +0300
Subject: [PATCH] [3635][WebUI] fix language change to system default

When setting a language, we set 2 environment variables at run time.
Setting the language back to `System Default`, we don't clean those env
variables.
In the WebUI, the page only reloads, and we still use the env variables
to set the language back to the previous one.
This does not affect GTK.

Closes: https://dev.deluge-torrent.org/ticket/3635
---
 deluge/i18n/util.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/deluge/i18n/util.py b/deluge/i18n/util.py
index f6920fbb38..f553dc8fb1 100644
--- a/deluge/i18n/util.py
+++ b/deluge/i18n/util.py
@@ -66,6 +66,9 @@ def set_language(lang):
     :type lang: str
     """
     if not lang:
+        for lang_env_var in ['LANGUAGE', 'LANG']:
+            if lang_env_var in os.environ:
+                del os.environ[lang_env_var]
         return
 
     # Necessary to set these environment variables for GtkBuilder