Add Markdown Extra formatter

Library: [Parsedown Extra](https://github.com/erusev/parsedown-extra)

Also sort dependencies alphabetically.

Fixes #1169

2 files changed, 25 insertions, 1 deletions

diff --git a/application/formatter/BookmarkMarkdownExtraFormatter.php b/application/formatter/BookmarkMarkdownExtraFormatter.php
new file mode 100644
index 00000000..0694b23f
--- /dev/null
+++ b/application/formatter/BookmarkMarkdownExtraFormatter.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Shaarli\Formatter;
+
+use Shaarli\Config\ConfigManager;
+
+/**
+ * Class BookmarkMarkdownExtraFormatter
+ *
+ * Format bookmark description into MarkdownExtra format.
+ *
+ * @see https://michelf.ca/projects/php-markdown/extra/
+ *
+ * @package Shaarli\Formatter
+ */
+class BookmarkMarkdownExtraFormatter extends BookmarkMarkdownFormatter
+{
+    public function __construct(ConfigManager $conf, bool $isLoggedIn)
+    {
+        parent::__construct($conf, $isLoggedIn);
+
+        $this->parsedown = new \ParsedownExtra();
+    }
+}
diff --git a/application/front/controller/admin/ConfigureController.php b/application/front/controller/admin/ConfigureController.php
index e675fcca..0ed7ad81 100644
--- a/application/front/controller/admin/ConfigureController.php
+++ b/application/front/controller/admin/ConfigureController.php
@@ -30,7 +30,7 @@ class ConfigureController extends ShaarliAdminController
             'theme_available',
             ThemeUtils::getThemes($this->container->conf->get('resource.raintpl_tpl'))
         );
-        $this->assignView('formatter_available', ['default', 'markdown']);
+        $this->assignView('formatter_available', ['default', 'markdown', 'markdownExtra']);
         list($continents, $cities) = generateTimeZoneData(
             timezone_identifiers_list(),
             $this->container->conf->get('general.timezone')