From cdaf86b0392c88af87c9d946b732498529e07b3b Mon Sep 17 00:00:00 2001
From: Aidan Woods <aidantwoods@gmail.com>
Date: Sun, 8 Apr 2018 17:39:24 +0100
Subject: [PATCH 1/2] Add seperate depth-first function instead of replacing
 recursive method

---
 Parsedown.php | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/Parsedown.php b/Parsedown.php
index 0ac3e3d..eebd2f9 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -1631,6 +1631,22 @@ class Parsedown
     }
 
     protected function elementApplyRecursive($closure, array $Element)
+    {
+        $Element = call_user_func($closure, $Element);
+
+        if (isset($Element['elements']))
+        {
+            $Element['elements'] = $this->elementsApplyRecursive($closure, $Element['elements']);
+        }
+        elseif (isset($Element['element']))
+        {
+            $Element['element'] = $this->elementApplyRecursive($closure, $Element['element']);
+        }
+
+        return $Element;
+    }
+
+    protected function elementApplyRecursiveDepthFirst($closure, array $Element)
     {
         if (isset($Element['elements']))
         {
@@ -1658,6 +1674,18 @@ class Parsedown
         return $newElements;
     }
 
+    protected function elementsApplyRecursiveDepthFirst($closure, array $Elements)
+    {
+        $newElements = array();
+
+        foreach ($Elements as $Element)
+        {
+            $newElements[] = $this->elementApplyRecursiveDepthFirst($closure, $Element);
+        }
+
+        return $newElements;
+    }
+
     protected function element(array $Element)
     {
         if ($this->safeMode)

From 86940be22421f709107d7be8a890d67ea65c25e5 Mon Sep 17 00:00:00 2001
From: Aidan Woods <aidantwoods@gmail.com>
Date: Sun, 8 Apr 2018 17:49:36 +0100
Subject: [PATCH 2/2] Use mutating loop instead of creating new array

---
 Parsedown.php | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/Parsedown.php b/Parsedown.php
index eebd2f9..9b7a3e9 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -1664,26 +1664,22 @@ class Parsedown
 
     protected function elementsApplyRecursive($closure, array $Elements)
     {
-        $newElements = array();
-
-        foreach ($Elements as $Element)
+        foreach ($Elements as &$Element)
         {
-            $newElements[] = $this->elementApplyRecursive($closure, $Element);
+            $Element = $this->elementApplyRecursive($closure, $Element);
         }
 
-        return $newElements;
+        return $Elements;
     }
 
     protected function elementsApplyRecursiveDepthFirst($closure, array $Elements)
     {
-        $newElements = array();
-
-        foreach ($Elements as $Element)
+        foreach ($Elements as &$Element)
         {
-            $newElements[] = $this->elementApplyRecursiveDepthFirst($closure, $Element);
+            $Element = $this->elementApplyRecursiveDepthFirst($closure, $Element);
         }
 
-        return $newElements;
+        return $Elements;
     }
 
     protected function element(array $Element)