Add the :del: text role

It will be displayed as a `<del>` tag in HTML.

gergelypolonkaieu_site/plugins/custom_roles.py

@@ -10,9 +10,14 @@ def superscript_role(name, rawtext, text, lineno, inliner, options=None, content
     return [nodes.raw('', f'<sup>{text}</sup>', format='html')], []
 
 
+def del_role(name, rawtext, text, lineno, inliner, options=None, content=None):
+    return [nodes.raw('', f'<del>{text}</del>', format='html')], []
+
+
 def register_roles():
     rst.roles.register_local_role('kbd', keyboard_role)
     rst.roles.register_local_role('sup', superscript_role)
+    rst.roles.register_local_role('del', del_role)
 
 
 def register():