Threw something quick together based on nodebb-plugin-spoilers, I also looked into extending the existing markdown plugin using the extension support the parser has, but didn't really succeed. Would be great if we could just add markdown-it extensions in the admin panel to extend the syntax, cuz there are plenty existing ones
Thank you for your interest in helping us translate NodeBB. Our translations are stored in Transifex at the link below.
The NodeBB translation project on Transifex
Translate NodeBB into your own language.
Any translations or corrections you provide are very much appreciated.