* doc/lispref/modes.texi (Outline Minor Mode):
Add 'treesit-aggregated-outline-predicate'.
* lisp/treesit.el (treesit-aggregated-outline-predicate):
New buffer-local variable.
(treesit-outline--at-point):
Use 'treesit-aggregated-outline-predicate'.
(treesit-closest-parser-boundary): New function.
(treesit-outline-search): Use 'treesit-aggregated-outline-predicate'
and 'treesit-closest-parser-boundary'.
(treesit-outline-level): Use 'treesit-aggregated-outline-predicate'.
(treesit-major-mode-setup): Add 'treesit-aggregated-outline-predicate'.
* lisp/textmodes/html-ts-mode.el (html-ts-mode--outline-predicate):
Improve.
* lisp/textmodes/mhtml-ts-mode.el (mhtml-ts-mode):
Set 'treesit-aggregated-outline-predicate'.
* lisp/treesit.el (treesit-simple-indent-modify-rules): Rename
and fix docstring. It should be matcher, not anchor. Also
reword a little bit.
* etc/NEWS: Update.
* lisp/textmodes/mhtml-ts-mode.el:
(mhtml-ts-mode--treesit-indent-rules): Update accordingly.
New major-mode alternative to mhtml-mode, based on treesitter, for
editing files containing html, javascript and css.
* etc/NEWS: Mention the new mode and new functions.
* lisp/textmodes/mhtml-ts-mode.el: New file.
* lisp/progmodes/js.el
(js--treesit-thing-settings): New variable.
(js--treesit-font-lock-feature-list); New variable.
(js--treesit-simple-imenu-settings): New variable.
(js--treesit-defun-type-regexp): New variable.
(js--treesit-jsdoc-comment-regexp): New variable.
(js-ts-mode): Use of new variables instead of direct assignment of
values.
* lisp/textmodes/css-mode.el
(css-mode--menu): New variable.
(css-mode-map): Use new variable.
(css--treesit-font-lock-feature-list): New variable.
(css--treesit-simple-imenu-settings): New variable.
(css--treesit-defun-type-regexp): New variable.
(cs-ts-mode): Use of new variables instead of direct assignment of
values.
* lisp/textmodes/html-ts-mode.el
(html-ts-mode--treesit-things-settings): New variable.
(html-ts-mode--treesit-font-lock-feature-list): New variable.
(html-ts-mode--treesit-simple-imenu-settings): New variable.
(html-ts-mode--treesit-defun-type-regexp): New variable.
(html-ts-mode): Use of new variables instead of direct assignment of
values.
* lisp/treesit.el
(treesit-merge-font-lock-feature-list): New fuction.
(treesit-replace-font-lock-feature-settings): New fuction.
(treesit-modify-indent-rules): New function.
