Replace the markdown parser with CommonMark

app/config/sculpin_kernel.yml

@@ -1,3 +1,6 @@
 sculpin_content_types:
     posts:
         enabled: false
+
+parameters:
+    twig.markdown.parser.class: 'App\Markdown\CommonMarkMarkdownParser'

app/src/Markdown/CommonMarkMarkdownParser.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Markdown;
+
+use League\CommonMark\CommonMarkConverter;
+use Opdavies\Sculpin\Bundle\TwigMarkdownBundle\Twig\SculpinTwigMarkdownParserInterface;
+
+class CommonMarkMarkdownParser implements SculpinTwigMarkdownParserInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function transform($text)
+    {
+        $converter = new CommonMarkConverter([
+            'html_input' => 'strip',
+            'allow_unsafe_links' => false,
+        ]);
+
+        return $converter->convertToHtml($text);
+    }
+}

composer.json

@@ -10,8 +10,9 @@
         }
     ],
     "require": {
-        "sculpin/sculpin": "^3.0",
-        "opdavies/sculpin-twig-markdown-bundle": "dev-markdown"
+        "league/commonmark": "^1.1",
+        "opdavies/sculpin-twig-markdown-bundle": "dev-markdown",
+        "sculpin/sculpin": "^3.0"
     },
     "scripts": {
         "dev": "composer run-script generate",
@@ -26,5 +27,10 @@
         "branch-alias": {
             "dev-master": "2.1-dev"
         }
+    },
+    "autoload": {
+        "psr-4": {
+            "App\\": "app/src"
+        }
     }
 }