From d6e306d62044c7731317ec2670a30842d13358d9 Mon Sep 17 00:00:00 2001
From: Aidan Woods <aidantwoods@gmail.com>
Date: Sun, 8 Apr 2018 20:43:14 +0100
Subject: [PATCH] Optimise commonly used regexes to fail fast

---
 Parsedown.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Parsedown.php b/Parsedown.php
index 438e39e..2e61f0f 100644
--- a/Parsedown.php
+++ b/Parsedown.php
@@ -1218,12 +1218,12 @@ class Parsedown
 
         if ($this->breaksEnabled)
         {
-            $Inline['element']['rawHtml'] = preg_replace('/[ ]*\n/', "<br />\n", $safeText);
+            $Inline['element']['rawHtml'] = preg_replace('/[ ]*+\n/', "<br />\n", $safeText);
             $Inline['element']['allowRawHtmlInSafeMode'] = true;
         }
         else
         {
-            $Inline['element']['rawHtml'] = preg_replace('/(?:[ ][ ]+|[ ]*\\\\)\n/', "<br />\n", $safeText);
+            $Inline['element']['rawHtml'] = preg_replace('/(?:[ ]*+\\\\|[ ]{2,}+)\n/', "<br />\n", $safeText);
             $Inline['element']['allowRawHtmlInSafeMode'] = true;
         }