Some of the fixes are to continue to use American
rather than British spelling.
* doc/misc/modus-themes.org (my-modus-themes-engraved-faces):
Fix misspelled ‘:foreground’s.
* etc/themes/modus-themes.el (modus-themes-faces):
Fix misspelled ‘modus-themes-bold’.
* lisp/emacs-lisp/rx.el (rx--normalize-char-pattern):
Rename from rx--normalise-char-pattern.
(rx--optimize-or-args):	Rename from rx--optimise-or-args.
* lisp/frame.el (frame--special-parameters):
Fix misspelled "right-divider-width".
* lisp/net/tramp.el (tramp-fingerprint-prompt-regexp):
Use American spelling “centered”, to match current libfprintf.
* lisp/org/org-fold-core.el (org-fold-core--optimize-for-huge-buffers):
Rename from org-fold-core--optimise-for-huge-buffers.
(org-fold-core-update-optimization):
Rename from org-fold-core-update-optimisation,
leaving an alias behind.
(org-fold-core-remove-optimization):
Rename from org-fold-core-remove-optimisation,
leaving an alias behind.
* lisp/org/org.el (org-advertized-archive-subtree):
This alias is now obsolete.
* lisp/play/zone.el (zone-ignored-buffers):
Fix misspelling of ‘zone--buffer-encrypted-p’.
* lisp/progmodes/csharp-mode.el (csharp-ts-mode-faces):
Fix misspelling of ‘csharp’ group.
* lisp/vc/vc.el (vc-clonable-backends-custom-type):
Rename from vc-cloneable-backends-custom-type,
leaving an alias behind.
* test/lisp/emacs-lisp/bytecomp-tests.el:
(bytecomp-tests--warn-arity-non-compiled-callee):
Rename from bytecomp-tests--warn-arity-noncompiled-callee.
(bytecomp-test-defface-spec): Reword a deliberate misspelling
of “default” that is so common I don’t want it to pollute the
spelling dictionary.
* test/lisp/emacs-lisp/package-vc-tests.el:
(package-vc-tests-preserve-artifacts):
Rename from package-vc-tests-preserve-artifacts.
* test/lisp/eshell/em-prompt-tests.el:
(em-prompt-test/forward-backward-paragraph-1):
Reword a deliberate misspelling of “goodbye” that is so common I
don’t want it to pollute the spelling dictionary.

* lisp/electric.el (electric-indent-functions-without-reindent):
Remove obsolete entries: Haskell modes, python-mode, and
coffer-mode already disable electric reindentation on their
side, so we don't need those entries any more.

* lisp/org/org.el (org-mode): Don't rely on
`electric-indent-functions-without-reindent'.

* lisp/org/org-habit.el (org-habit-build-graph): Rewrite without using
string mutation (using vectors instead), fixing a bug where
org-habit-completed-glyph and org-habit-today-glyph wouldn't display
properly if in the U+0080..00FF range, discovered by the more restricted
string mutation.

Reported by Daniel Mendler in
 https://lists.gnu.org/archive/html/emacs-orgmode/2025-08/msg00224.html

org-src-font-lock-fontify-block creates an uninitialized
native-tab-width variable and then, when there is no language set on a
block, ends up using it.  This triggers an error.

* lisp/org/org-persist.el: Minor cleanup.
(org-persist-directory, org-persist-remote-files)
(org-persist-default-expiry): Remove redundant `:group` arg.
(org-persist-collection-let): Document lack of hygiene.
Remove `with-no-warnings`.
(org-persist--find-index): Reindent, and simplify initialization of `r`.
(org-persist-associated-files:generic): Move before first use.

* lisp/org/org-compat.el (org-replace-buffer-contents): Delete function.
(org-replace-region-contents): New function.
* lisp/org/org-src.el (org-edit-src-save, org-edit-src-exit): Use it.

* configure.ac (libgccjit_not_found_err)
(libgccjit_dev_not_found_err):
* doc/emacs/buffers.texi (List Buffers):
* doc/lispref/elisp.texi (Tree-sitter C API):
* doc/lispref/functions.texi (What Is a Function):
* doc/lispref/parsing.texi (Parsing Program Source)
(Tree-sitter C API):
* doc/misc/gnus.texi (The Gnus Registry):
* etc/DEBUG:
* etc/NEWS:
* etc/NEWS.25:
* etc/NEWS.26:
* etc/NEWS.28:
* etc/NEWS.30:
* etc/TODO:
* lib-src/emacsclient.c (print_help_and_exit):
* lisp/auth-source.el (auth-source-search):
* lisp/cedet/semantic/bovine/el.el (emacs-lisp-mode):
* lisp/cedet/semantic/wisent/comp.el
(wisent-automaton-lisp-form):
* lisp/cedet/srecode/el.el (srecode-semantic-apply-tag-to-dict):
* lisp/editorconfig.el
(editorconfig-get-local-variables-functions):
* lisp/emacs-lisp/bindat.el (bindat-type):
* lisp/emacs-lisp/byte-opt.el (byte-compile-inline-expand):
* lisp/emacs-lisp/cconv.el (cconv-make-interpreted-closure):
* lisp/emacs-lisp/cl-macs.el (cl--labels-convert):
* lisp/emacs-lisp/lisp-mode.el (lisp-fdefs)
(lisp-fill-paragraphs-as-doc-string):
* lisp/emacs-lisp/macroexp.el (macroexp--fgrep):
* lisp/emacs-lisp/oclosure.el (cconv--interactive-helper):
* lisp/emacs-lisp/re-builder.el:
* lisp/erc/erc-button.el (erc-emacswiki-lisp-url):
* lisp/help-fns.el
(help-fns--describe-function-or-command-prompt):
* lisp/menu-bar.el (menu-bar-search-documentation-menu):
* lisp/net/tramp-message.el (tramp-debug-font-lock-keywords):
* lisp/org/org-capture.el (org-capture):
* lisp/org/org.el (org-category, org-todo):
* lisp/org/ox.el (org-export-async-start):
* lisp/progmodes/elisp-mode.el (emacs-lisp-mode):
* lisp/progmodes/peg.el (peg-translate-exp):
* lisp/progmodes/ruby-ts-mode.el:
* lisp/woman.el (woman-mode, woman-parse-numeric-arg):
* src/chartab.c (map_char_table_for_charset):
* src/fns.c (extract_data_from_object):
* src/frame.c (do_switch_frame):
* src/keyboard.c (make_lispy_event):
* test/lisp/emacs-lisp/cl-macs-tests.el (cl-&key-arguments):
* test/lisp/emacs-lisp/shortdoc-tests.el
(shortdoc-help-fns-examples-function-test):
* test/manual/etags/c-src/emacs/src/keyboard.c
(make_lispy_event): Fix capitalization ELisp -> Elisp.

This fixes Bug#69865.

* lisp/org/ob-exp.el (org-babel-exp--at-source):
* test/lisp/dired-tests.el (dired-test-with-temp-dirs):
* test/lisp/emacs-lisp/package-tests.el (with-fake-help-buffer):
Fix broken edebug specs (debug body) -> (debug (body)).

* lisp/org/ox-publish.el (org-publish-timestamp-filename): Remove
Emacs 23 compat code.