Thank you. Based on your modification, I decided to vent the code to improve it a bit. As suggested, syntax code got added in placeholder of the textarea when a page is created. Example here (just an empty page): https://mindwi.se/?testtest
Hope it helps.
Great project, thank you. I felt a little stupid when trying to create a new page, then remembered the way of the Wiki and appended ?new-page to the URL, of course. Maybe add this info in the description?