December 2025 spelling fixes

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.

2 files changed, 2 insertions, 2 deletions

diff --git a/test/src/editfns-tests.el b/test/src/editfns-tests.el
index a66e25ddc6a..e387460a149 100644
--- a/test/src/editfns-tests.el
+++ b/test/src/editfns-tests.el
@@ -368,7 +368,7 @@ Execute tests as described by `editfns-tests--transpose-regions-tests'."
               (should (equal (mapcar #'marker-position pmarkers) pmpos))
             ;; Meh.  This more or less blindly duplicates function
             ;; transpose_markers, since I have been too lazy to
-            ;; reproduce the arithmetics myself.
+            ;; reproduce the arithmetic myself.
             (setq pmpos
                   (mapcar
                    (lambda (pos)
diff --git a/test/src/treesit-tests.el b/test/src/treesit-tests.el
index 89303114735..e107829621a 100644
--- a/test/src/treesit-tests.el
+++ b/test/src/treesit-tests.el
@@ -235,7 +235,7 @@
 ;;; Linecol
 
 (ert-deftest treesit-linecol-basic ()
-  "Tests for basic lincol synchronization."
+  "Tests for basic linecol synchronization."
   (skip-unless (fboundp 'treesit--linecol-cache))
   (with-temp-buffer
     (should (equal (treesit--linecol-cache)