Add some special-casing for different quirks in langpack names.

scripts/change-system-language

@@ -3,10 +3,27 @@
 LANGUAGE_CODE=$1
 COUNTRY_CODE=$2
 LOCALE="${LANGUAGE_CODE}_${COUNTRY_CODE}.UTF-8"
-ONLY_LXQT=$3
+LIBREOFFICE_CODE=$3
+ONLY_LXQT=$4
+
+# Special handling for language packs for Chinese
+if [[ "$LANGUAGE_CODE" == "zh" ]]; then
+    if [[ "$COUNTRY_CODE" == "CN" || "$COUNTRY_CODE" == "SG" || "$COUNTRY_CODE" == "MY" ]]; then
+        LANG_PACK_SUFFIX="zh-hans"
+    else
+        LANG_PACK_SUFFIX="zh-hant"
+    fi
+else
+    LANG_PACK_SUFFIX="$LANGUAGE_CODE"
+fi
 
 if [ -z "$ONLY_LXQT" ]; then
-    apt-get -y install language-pack-gnome-$LANGUAGE_CODE language-pack-kde-$LANGUAGE_CODE
+    apt-get -y install language-pack-gnome-$LANG_PACK_SUFFIX language-pack-kde-$LANG_PACK_SUFFIX
+    # Install LibreOffice language pack only if LIBREOFFICE_CODE is provided
+    # and it's not English without a specific variant
+    if [[ "$LANGUAGE_CODE" != "en" ]] || [[ "$LANGUAGE_CODE" == "en" && ( "$COUNTRY_CODE" == "GB" || "$COUNTRY_CODE" == "ZA" ) ]]; then
+        apt-get -y install libreoffice-l10n-$LIBREOFFICE_CODE
+    fi
 fi
 
 update-locale LANGUAGE=$LOCALE LANG=$LOCALE LC_ALL=$LOCALE

src/installerprompt.cpp

@@ -443,12 +443,23 @@ void InstallerPrompt::onLanguageConfirm() {
         ui->changingLanguageLabel->setText(tr("Changing language..."));
     }
 
+    // Some of the LibreOffice language packs need special-casing, do that here
+    QString libreOfficeLang;
+    if (localeParts[0] == "zh") {
+        libreOfficeLang = (countryCode == "CN" || countryCode == "SG" || countryCode == "MY") ? "zh-cn" : "zh-tw";
+    } else {
+        static const QMap<QString, QString> localeMap = {
+            {"en_GB", "en-gb"}, {"en_ZA", "en-za"}, {"pa_IN", "pa-in"}, {"pt_BR", "pt-br"}
+        };
+        libreOfficeLang = localeMap.value(localeParts.join('_'), languageCode);
+    }
+
     // Construct the command to run the script with parameters
     QProcess *process = new QProcess(this);
     QStringList arguments;
 
     process->setProgram("/usr/libexec/change-system-language");
-    arguments << languageCode << countryCode;
+    arguments << languageCode << countryCode << libreOfficeLang;
     if (only_lxqt) arguments << "1";
     process->setArguments(arguments);