From 977d1c851cc9b01fb9a0d15f1f4c0167647f948a Mon Sep 17 00:00:00 2001
From: Mathieu Lutfy <mathieu@symbiotic.coop>
Date: Tue, 21 Jun 2022 09:54:05 -0400
Subject: [PATCH] dev/core#1541 Fix ICalendar random invalid utf8 (PHP <7.4
 compat) and tests

---
 CRM/Utils/ICalendar.php                   | 5 ++++-
 tests/phpunit/CRM/Utils/ICalendarTest.php | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/CRM/Utils/ICalendar.php b/CRM/Utils/ICalendar.php
index b23f24f3c1..170dbef162 100644
--- a/CRM/Utils/ICalendar.php
+++ b/CRM/Utils/ICalendar.php
@@ -38,7 +38,9 @@ class CRM_Utils_ICalendar {
     $text = str_replace(',', '\,', $text);
     $text = str_replace(';', '\;', $text);
     $text = str_replace(["\r\n", "\n", "\r"], "\\n ", $text);
-    $text = implode("\n ", mb_str_split($text, 50));
+    // Remove this check after PHP 7.4 becomes a minimum requirement
+    $str_split = function_exists('mb_str_split') ? 'mb_str_split' : 'str_split';
+    $text = implode("\n ", $str_split($text, 50));
     return $text;
   }
 
@@ -51,6 +53,7 @@ class CRM_Utils_ICalendar {
    * @return string
    */
   public static function unformatText($text) {
+    $text = str_replace("\n ", "", $text);
     $text = str_replace('\n ', "\n", $text);
     $text = str_replace('\;', ';', $text);
     $text = str_replace('\,', ',', $text);
diff --git a/tests/phpunit/CRM/Utils/ICalendarTest.php b/tests/phpunit/CRM/Utils/ICalendarTest.php
index 33eac671ed..180e94b6c4 100644
--- a/tests/phpunit/CRM/Utils/ICalendarTest.php
+++ b/tests/phpunit/CRM/Utils/ICalendarTest.php
@@ -27,6 +27,8 @@ class CRM_Utils_ICalendarTest extends CiviUnitTestCase {
 
     this is, a \"test\"!",
     ];
+    $cases[] = ["one, two, three; aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahh ahh ahhh"];
+    $cases[] = ["Bonjour! éèçô, этому скромному разработчику не нравится война на Украине 💓 💔 🌈 💕 💖"];
     return $cases;
   }
 
-- 
2.25.1