From d9761880cba684017367b74a9244fcc4248254a9 Mon Sep 17 00:00:00 2001
From: Felix Yan <felixonmars@archlinux.org>
Date: Mon, 10 Dec 2018 03:34:57 +0800
Subject: [PATCH] Fix compatibility with PHP 7.3

The regex fails to parse in PHP 7.3, which broke the page in later functions.

```
PHP Warning:  preg_replace(): Compilation failed: invalid range in character class at offset 4 in /var/www/felixcat/wp-content/plugins/crayon-syntax-highlighter/crayon_langs.class.php on line 340
```
---
 crayon_langs.class.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/crayon_langs.class.php b/crayon_langs.class.php
index 651f55c8..ade1811b 100644
--- a/crayon_langs.class.php
+++ b/crayon_langs.class.php
@@ -337,7 +337,7 @@ function __construct($id, $name = NULL) {
 	// Override
 	function clean_id($id) {
         $id = CrayonUtil::space_to_hyphen( strtolower(trim($id)) );
-        return preg_replace('/[^\w-+#]/msi', '', $id);
+        return preg_replace('/[^\w\-+#]/msi', '', $id);
 	}
 
 	function ext($ext = NULL) {
@@ -543,4 +543,4 @@ function path($path = NULL) {
 	}
 }
 
-?>
\ No newline at end of file
+?>