For example, isn't the first item an addition? And what about
"missing assignment expressions"?

The first item is an extension of "keyword" feature. I've added "is not" and "not in" to the `python--treesit-keywords` list.

"missing assignment expressions" is extension of "assignment" feature.

I've added two tree-sitter queries.

For example: `var = 3` - var was fontified with `font-lock-variable-name-face`, but in the expression `var *= 3` - var wasn't fontified as variable.

11.11.2023, 14:01, "Eli Zaretskii" <eliz@gnu.org>:

From: Denis Zubarev <dvzubarev@yandex.ru>
Cc: "67061@debbugs.gnu.org" <67061@debbugs.gnu.org>
Date: Sat, 11 Nov 2023 13:52:45 +0300

  My only comment is that we should decide in which fontification
  level(s) should the additional fontifications be.

I didn't add any new features, just tweak the old ones to be more correct.

I thought at least some of these are new:

> - Fontify compound keywords "not in" and "is not" (fixes bug#67015)
> - Fix fontification of strings inside of f-strings interpolation,
> e.g. for f"beg {'nested'}" - 'nested' was not fontified as string.
> - Do not override the face of builtin functions (all, bytes etc.) with
> the function call face
> - Add missing assignment expressions
> - Fontify built-ins (dict,list,etc.) as types when they are used in type hints

For example, isn't the first item an addition? And what about
"missing assignment expressions"?

  What problems with CI did you see? I don't think I understand your
  last sentence above.

I've grepped the codebase and found those lines:

TREE-SITTER-FILES ?= $(shell cd .. ; \
   find lisp src $ -name "*-ts-mode-tests.el" -o -name "treesit-tests.el" $ | \
   sort | sed s/\\.el/.log/)

in test/infra/Makefile.in
I thought that tree-sitter tests should go to either *-ts-mode-tests.el or treesit-tests.el files.

No, I don't think so. If having them in python-tests.el triggers some
problems, please show them, and let's take it from there.

  Would you like to start your assignment copyright
  paperwork rolling at this time? If yes, I will send you the form to
  fill and the instructions to email it.

Yes, please.

Thanks, form sent off-list.