Merge branch 'issue-1864' into calamares

FIXES #1864

CHANGES-3.2

@@ -14,6 +14,7 @@ This release contains contributions from (alphabetically by first name):
  - Erik Dubois
  - Evan James
  - Johannes Kamprad
+ - Taejun Park (new contributor, welcome!)
 
 **Replacement notice:** The *umount* module will be replaced by a C++
 implementation in the next release. The "preserve log file" feature
@@ -38,6 +39,10 @@ will be removed in that release. Use the *preservefiles* module instead.
    module. (Thanks Erik and Joe for testing) #1851
  - *umount* is now marked as an emergency module in the example configuration,
    since it should **probably** be run as a cleanup. (Thanks Evan)
+ - *welcome* and *locale* could be confusing, together, and configure
+   the target system with a language that does not match the installer
+   language, even though the user did not make any explicit choice.
+   (Thanks Taejun) #1864
 
 
 # 3.2.49.1 (2021-12-11) #

src/modules/locale/Config.cpp

@@ -221,6 +221,11 @@ Config::setCurrentLocation()
     {
         setCurrentLocation( m_startingTimezone.first, m_startingTimezone.second );
     }
+    if ( !m_selectedLocaleConfiguration.explicit_lang )
+    {
+        auto newLocale = automaticLocaleConfiguration();
+        setLanguage( newLocale.language() );
+    }
 }
 
 void
@@ -252,15 +257,21 @@ Config::setCurrentLocation( const QString& regionName, const QString& zoneName )
 void
 Config::setCurrentLocation( const CalamaresUtils::Locale::TimeZoneData* location )
 {
-    if ( location != m_currentLocation )
+    const bool updateLocation = ( location != m_currentLocation );
+    if ( updateLocation )
     {
         m_currentLocation = location;
-        // Overwrite those settings that have not been made explicit.
-        auto newLocale = automaticLocaleConfiguration();
-        if ( !m_selectedLocaleConfiguration.explicit_lang )
-        {
-            setLanguage( newLocale.language() );
-        }
+    }
+
+    // lang should be always be updated
+    auto newLocale = automaticLocaleConfiguration();
+    if ( !m_selectedLocaleConfiguration.explicit_lang )
+    {
+        setLanguage( newLocale.language() );
+    }
+
+    if ( updateLocation )
+    {
         if ( !m_selectedLocaleConfiguration.explicit_lc )
         {
             m_selectedLocaleConfiguration.lc_numeric = newLocale.lc_numeric;