Hi, I found a bug in html-ts-mode. If you try to indent this simple html snippet (after enabling html-ts mode) and try to indent, say, the first or second line, emacs reports the following error: Matched rule: ((parent-is "fragment") point-min 0) treesit--simple-indent-eval: Wrong number of arguments: #, 3 Using parent-bol instead of point-min solves the problem. GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.37, cairo version 1.17.6) of 2023-04-09 The patch is attached. The fragment is as follows: test

This is a heading

This is a paragraph.

Thank you. V.