* doc/lispref/parsing.texi (User-defined Things): Mention new
functions 'treesit-forward-list', 'treesit-down-list',
'treesit-up-list', 'treesit-show-paren-data' that use the thing
'list' with the symbol property 'treesit-thing-symbol' (bug#73404).
* lisp/treesit.el: Put the property 'treesit-thing-symbol'
on the symbol 'list'.
(treesit--forward-list-with-default, treesit-down-list)
(treesit-up-list, treesit-navigate-thing)
(treesit-show-paren-data--categorize, treesit-major-mode-setup):
Replace 'sexp-list' with 'list'.
* lisp/progmodes/c-ts-mode.el (c-ts-mode--thing-settings):
* lisp/progmodes/js.el (js-ts-mode):
* lisp/progmodes/ruby-ts-mode.el (ruby-ts-mode):
* lisp/progmodes/typescript-ts-mode.el (typescript-ts-base-mode)
(tsx-ts-mode):
* lisp/textmodes/html-ts-mode.el (html-ts-mode):
Replace 'sexp-list' with 'list'.
* src/treesit.c (treesit_traverse_validate_predicate)
(treesit_traverse_match_predicate): Check if the 'pred'
symbol has the property 'Qtreesit_thing_symbol'.
(syms_of_treesit): New symbol 'Qtreesit_thing_symbol'.
* doc/emacs/text.texi (Outline Format): Add 'outline-search-function'.
* doc/lispref/elisp.texi (Top): Add new menu item "Outline Minor Mode"
after "Imenu".
* doc/lispref/modes.texi (Modes): Add new menu item "Outline Minor Mode"
after "Imenu".
(Major Mode Conventions): Mention "Outline Minor Mode" with @pxref.
(Outline Minor Mode): New node.
* doc/lispref/parsing.texi (Tree-sitter Major Modes): Mention
'treesit-outline-predicate' with @pxref.
* lisp/treesit.el (treesit-outline-predicate): New buffer-local variable.
(treesit-outline-predicate--from-imenu): New internal function.
(treesit-outline-search, treesit-outline-level): New functions.
(treesit-major-mode-setup): Set up treesit-outline-predicate,
outline-search-function and outline-level.
* lisp/progmodes/c-ts-mode.el (c-ts-mode--outline-predicate):
New internal function.
(c-ts-base-mode): Set 'treesit-outline-predicate' to
'c-ts-mode--outline-predicate'.
* lisp/progmodes/heex-ts-mode.el (heex-ts-mode): Kill inherited
local variables 'outline-heading-end-regexp', 'outline-regexp',
'outline-level'.
* lisp/progmodes/lua-ts-mode.el (lua-ts-mode): Remove 'outline-regexp'.
Suggested by john muhl <jm@pub.pink>.
* lisp/textmodes/html-ts-mode.el (html-ts-mode): Kill inherited
local variables 'outline-heading-end-regexp', 'outline-regexp',
'outline-level'.
