:arrow_up: Update libraries.

michelf/php-markdown (1.7.0 => 1.8.0)
ezyang/htmlpurifier (v4.9.3 => v4.10.0)
commerceguys/intl (v0.7.4 => v0.7.5)
sabre/http (4.2.3 => v4.2.4)
sabre/vobject (4.1.3 => 4.1.5)

7 files changed, 29 insertions, 18 deletions

diff --git a/vendor/sabre/vobject/lib/ITip/Broker.php b/vendor/sabre/vobject/lib/ITip/Broker.php
index effa74317..b9a30611b 100644
--- a/vendor/sabre/vobject/lib/ITip/Broker.php
+++ b/vendor/sabre/vobject/lib/ITip/Broker.php
@@ -849,6 +849,7 @@ class Broker {
         $exdate = [];
 
         foreach ($calendar->VEVENT as $vevent) {
+            $rrule = [];
 
             if (is_null($uid)) {
                 $uid = $vevent->UID->getValue();
@@ -889,6 +890,18 @@ class Broker {
                 }
                 sort($exdate);
             }
+            if (isset($vevent->RRULE)) {
+                foreach ($vevent->select('RRULE') as $rr) {
+                    foreach ($rr->getParts() as $key => $val) {
+                        // ignore default values (https://github.com/sabre-io/vobject/issues/126)
+                        if ($key === 'INTERVAL' && $val == 1) {
+                            continue;
+                        }
+                        $rrule[] = "$key=$val";
+                    }
+                }
+                sort($rrule);
+            }
             if (isset($vevent->STATUS)) {
                 $status = strtoupper($vevent->STATUS->getValue());
             }
@@ -953,19 +966,16 @@ class Broker {
                     $significantChangeHash .= $prop . ':';
 
                     if ($prop === 'EXDATE') {
-
                         $significantChangeHash .= implode(',', $exdate) . ';';
-
+                    } elseif ($prop === 'RRULE') {
+                        $significantChangeHash .= implode(',', $rrule) . ';';
                     } else {
-
                         foreach ($propertyValues as $val) {
                             $significantChangeHash .= $val->getValue() . ';';
                         }
-
                     }
                 }
             }
-
         }
         $significantChangeHash = md5($significantChangeHash);
 
diff --git a/vendor/sabre/vobject/lib/Parser/MimeDir.php b/vendor/sabre/vobject/lib/Parser/MimeDir.php
index fa75a1a3b..78e5bf385 100644
--- a/vendor/sabre/vobject/lib/Parser/MimeDir.php
+++ b/vendor/sabre/vobject/lib/Parser/MimeDir.php
@@ -464,13 +464,13 @@ class MimeDir extends Parser {
                 // vCard 2.1 allows the character set to be specified per property.
                 $charset = (string)$propObj['CHARSET'];
             }
-            switch ($charset) {
-                case 'UTF-8' :
+            switch (strtolower($charset)) {
+                case 'utf-8' :
                     break;
-                case 'ISO-8859-1' :
+                case 'iso-8859-1' :
                     $property['value'] = utf8_encode($property['value']);
                     break;
-                case 'Windows-1252' :
+                case 'windows-1252' :
                     $property['value'] = mb_convert_encoding($property['value'], 'UTF-8', $charset);
                     break;
                 default :
diff --git a/vendor/sabre/vobject/lib/Property.php b/vendor/sabre/vobject/lib/Property.php
index 1aaa3ed58..96855f1f7 100644
--- a/vendor/sabre/vobject/lib/Property.php
+++ b/vendor/sabre/vobject/lib/Property.php
@@ -249,8 +249,9 @@ abstract class Property extends Node {
         $out = '';
         while (strlen($str) > 0) {
             if (strlen($str) > 75) {
-                $out .= mb_strcut($str, 0, 75, 'utf-8') . "\r\n";
-                $str = ' ' . mb_strcut($str, 75, strlen($str), 'utf-8');
+                $part = mb_strcut($str, 0, 75, 'utf-8');
+                $out .= $part . "\r\n";
+                $str = ' ' . substr($str, strlen($part));
             } else {
                 $out .= $str . "\r\n";
                 $str = '';
diff --git a/vendor/sabre/vobject/lib/Property/Text.php b/vendor/sabre/vobject/lib/Property/Text.php
index 476dcde4d..bb7ab34ee 100644
--- a/vendor/sabre/vobject/lib/Property/Text.php
+++ b/vendor/sabre/vobject/lib/Property/Text.php
@@ -275,8 +275,9 @@ class Text extends Property {
             $out = '';
             while (strlen($str) > 0) {
                 if (strlen($str) > 75) {
-                    $out .= mb_strcut($str, 0, 75, 'utf-8') . "\r\n";
-                    $str = ' ' . mb_strcut($str, 75, strlen($str), 'utf-8');
+                    $part = mb_strcut($str, 0, 75, 'utf-8');
+                    $out .= $part . "\r\n";
+                    $str = ' ' . substr($str, strlen($part));
                 } else {
                     $out .= $str . "\r\n";
                     $str = '';
diff --git a/vendor/sabre/vobject/lib/Recur/RRuleIterator.php b/vendor/sabre/vobject/lib/Recur/RRuleIterator.php
index 20f34ef42..dbea1155d 100644
--- a/vendor/sabre/vobject/lib/Recur/RRuleIterator.php
+++ b/vendor/sabre/vobject/lib/Recur/RRuleIterator.php
@@ -592,11 +592,11 @@ class RRuleIterator implements Iterator {
                     // loop through all YearDay and Days to check all the combinations
                     foreach ($this->byYearDay as $byYearDay) {
                         $date = clone $this->currentDate;
-                        $date->setDate($currentYear, 1, 1);
+                        $date = $date->setDate($currentYear, 1, 1);
                         if ($byYearDay > 0) {
-                            $date->add(new \DateInterval('P' . $byYearDay . 'D'));
+                            $date = $date->add(new \DateInterval('P' . $byYearDay . 'D'));
                         } else {
-                            $date->sub(new \DateInterval('P' . abs($byYearDay) . 'D'));
+                            $date = $date->sub(new \DateInterval('P' . abs($byYearDay) . 'D'));
                         }
 
                         if ($date > $this->currentDate && in_array($date->format('N'), $dayOffsets)) {
diff --git a/vendor/sabre/vobject/lib/Version.php b/vendor/sabre/vobject/lib/Version.php
index 24c51a604..67e8a4037 100644
--- a/vendor/sabre/vobject/lib/Version.php
+++ b/vendor/sabre/vobject/lib/Version.php
@@ -14,6 +14,6 @@ class Version {
     /**
      * Full version number.
      */
-    const VERSION = '4.1.3';
+    const VERSION = '4.1.5';
 
 }
diff --git a/vendor/sabre/vobject/lib/timezonedata/php-bc.php b/vendor/sabre/vobject/lib/timezonedata/php-bc.php
index 906ccb0e4..83f38f507 100644
--- a/vendor/sabre/vobject/lib/timezonedata/php-bc.php
+++ b/vendor/sabre/vobject/lib/timezonedata/php-bc.php
@@ -68,7 +68,6 @@ return [
     'Brazil/West',
     'Canada/Atlantic',
     'Canada/Central',
-    'Canada/East-Saskatchewan',
     'Canada/Eastern',
     'Canada/Mountain',
     'Canada/Newfoundland',