1 files changed, 11 insertions, 13 deletions
diff --git a/vendor/sabre/vobject/lib/Property.php b/vendor/sabre/vobject/lib/Property.php
index 96855f1f7..3d1775fa2 100644
--- a/vendor/sabre/vobject/lib/Property.php
+++ b/vendor/sabre/vobject/lib/Property.php
@@ -246,20 +246,18 @@ abstract class Property extends Node {
 
         $str .= ':' . $this->getRawMimeDirValue();
 
-        $out = '';
-        while (strlen($str) > 0) {
-            if (strlen($str) > 75) {
-                $part = mb_strcut($str, 0, 75, 'utf-8');
-                $out .= $part . "\r\n";
-                $str = ' ' . substr($str, strlen($part));
-            } else {
-                $out .= $str . "\r\n";
-                $str = '';
-                break;
-            }
-        }
+        $str = \preg_replace(
+            '/(
+                (?:^.)?         # 1 additional byte in first line because of missing single space (see next line)
+                .{1,74}         # max 75 bytes per line (1 byte is used for a single space added after every CRLF)
+                (?![\x80-\xbf]) # prevent splitting multibyte characters
+            )/x',
+            "$1\r\n ",
+            $str
+        );
 
-        return $out;
+        // remove single space after last CRLF
+        return \substr($str, 0, -1);
 
     }