From 4723985b4c7bb258a4d9cde402f8c84736517c10 Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@hpi.de>
Date: Mon, 18 Dec 2023 21:35:17 +0100
Subject: [PATCH] Support GitHub-flavored Markdown

---
 Gemfile                           | 1 +
 Gemfile.lock                      | 3 +++
 app/helpers/application_helper.rb | 2 +-
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Gemfile b/Gemfile
index f6aa8a9b..e09b8bdd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,6 +24,7 @@ gem 'json_schemer'
 gem 'js-routes'
 gem 'jwt'
 gem 'kramdown'
+gem 'kramdown-parser-gfm'
 gem 'mimemagic'
 gem 'net-http-persistent'
 gem 'net-imap', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index daeccbaa..e141cfa1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -220,6 +220,8 @@ GEM
     kaminari-core (1.2.2)
     kramdown (2.4.0)
       rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
     language_server-protocol (3.17.0.3)
     launchy (2.5.2)
       addressable (~> 2.8)
@@ -585,6 +587,7 @@ DEPENDENCIES
   json_schemer
   jwt
   kramdown
+  kramdown-parser-gfm
   letter_opener
   listen
   mimemagic
diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 1b56cf40..28e84c1f 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -50,7 +50,7 @@ module ApplicationHelper
   end
 
   def render_markdown(markdown)
-    ActionController::Base.helpers.sanitize Kramdown::Document.new(markdown).to_html.strip
+    ActionController::Base.helpers.sanitize Kramdown::Document.new(markdown, input: 'GFM', hard_wrap: false).to_html.strip
   end
 
   def row(options = {}, &)