From 89cb4621fad67172a293b887e17f95b284b5642c Mon Sep 17 00:00:00 2001
From: billz <billzimmerman@gmail.com>
Date: Fri, 1 Dec 2023 14:18:38 +0000
Subject: [PATCH] Version compatibility check for isoquery options

---
 includes/functions.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/includes/functions.php b/includes/functions.php
index 6a17e4fb4..4d5c5b3cd 100755
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -874,10 +874,15 @@ function loadFooterScripts($extraFooterScripts)
  *
  * @param string $locale
  * @param boolean $flag
+ * @see   https://salsa.debian.org/debian/isoquery/
 */
 function getCountryCodes($locale = 'en', $flag = true) {
+    define("FLAG_SUPPORT", "3.3.0");
     $output = [];
-    if ($flag) {
+    $version = shell_exec("isoquery --version | grep -oP '(?<=isoquery )\d+\.\d+\.\d+'");
+    $compat = checkReleaseVersion(FLAG_SUPPORT, $version);
+
+    if ($flag && $compat) {
         $opt = '--flag';
     }
     exec("isoquery $opt --locale $locale | awk -F'\t' '{print $5 \"\t\" $0}' | sort | cut -f2-", $output);