; Fix typos (prefer American spelling)

doc/misc/modus-themes.org

@@ -5852,7 +5852,7 @@ interface virtually unusable.
 
 [[#h:5808be52-361a-4d18-88fd-90129d206f9b][Option for links]].
 
-Again, one must exercise judgement in order to avoid discrimination,
+Again, one must exercise judgment in order to avoid discrimination,
 where "discrimination" refers to:
 
 + The treatment of substantially different magnitudes as if they were of
@@ -5868,11 +5868,11 @@ usability beyond matters of color---they would be making a
 not-so-obvious error of treating different cases as if they were the
 same.
 
-The Modus themes prioritise "thematic consistency" over abstract harmony
+The Modus themes prioritize "thematic consistency" over abstract harmony
 or regularity among their applicable colors.  In concrete terms, we do
 not claim that, say, our yellows are the best complements for our blues
 because we generally avoid using complementary colors side-by-side, so
-it is wrong to optimise for a decontextualised blue+yellow combination.
+it is wrong to optimize for a decontextualised blue+yellow combination.
 Not to imply that our colors do not work well together because they do,
 just to clarify that consistency of context is what themes must strive
 for, and that requires widening the scope of the design beyond the

etc/themes/modus-themes.el

@@ -1435,7 +1435,7 @@ By default, customizing a theme-related user option through the
 Custom interfaces or with `customize-set-variable' will not
 reload the currently active Modus theme.
 
-Enable this behaviour by setting this variable to nil."
+Enable this behavior by setting this variable to nil."
   :group 'modus-themes
   :package-version '(modus-themes . "1.5.0")
   :version "28.1"

lisp/comint.el

@@ -3966,7 +3966,7 @@ an indirect buffer, whose major mode and syntax highlighting are
 set up according to `comint-indirect-setup-function'.  After this
 setup is done, run this hook with the indirect buffer as the
 current buffer.  This can be used to further customize
-fontification and other behaviour of the indirect buffer."
+fontification and other behavior of the indirect buffer."
   :group 'comint
   :type 'hook
   :version "29.1")

lisp/emacs-lisp/byte-opt.el

@@ -812,7 +812,7 @@ for speeding up processing.")
 (defun byte-compile-nilconstp (form)
   "Return non-nil if FORM always evaluates to a nil value."
   (setq form (byte-opt--bool-value-form form))
-  (or (not form)   ; assume (quote nil) always being normalised to nil
+  (or (not form)   ; assume (quote nil) always being normalized to nil
       (and (consp form)
            (let ((head (car form)))
              ;; FIXME: There are many other expressions that are statically nil.
@@ -1184,7 +1184,7 @@ See Info node `(elisp) Integer Basics'."
     (if (equal new-args (cdr form))
         ;; Input is unchanged: keep original form, and don't represent
         ;; a nil result explicitly because that would lead to infinite
-        ;; growth when the optimiser is iterated.
+        ;; growth when the optimizer is iterated.
         (setq nil-result nil)
       (setq form (cons (car form) new-args)))
 

lisp/ielm.el

@@ -491,7 +491,7 @@ and syntax highlighting are set up with `emacs-lisp-mode'.  In
 addition to `comint-indirect-setup-hook', run this hook with the
 indirect buffer as the current buffer after its setup is done.
 This can be used to further customize fontification and other
-behaviour of the indirect buffer."
+behavior of the indirect buffer."
   :type 'boolean
   :safe 'booleanp
   :version "29.1")

lisp/progmodes/cc-fonts.el

@@ -1972,7 +1972,7 @@ casts and declarations are fontified.  Used on level 2 and higher."
       (c-forward-syntactic-ws limit))))
 
 (defun c-font-lock-c++-modules (limit)
-  ;; Fontify the C++20 module stanzas, characterised by the keywords `module',
+  ;; Fontify the C++20 module stanzas, characterized by the keywords `module',
   ;; `export' and `import'.  Note that this has to be done by a function (as
   ;; opposed to regexps) due to the presence of optional C++ attributes.
   ;;

lisp/shell.el

@@ -324,7 +324,7 @@ enabled, is performed in an indirect buffer, whose indentation
 and syntax highlighting is set up with `sh-mode'.  In addition to
 `comint-indirect-setup-hook', run this hook with the indirect
 buffer as the current buffer after its setup is done.  This can
-be used to further customize fontification and other behaviour of
+be used to further customize fontification and other behavior of
 the indirect buffer."
   :type 'boolean
   :group 'shell

test/lisp/net/mailcap-tests.el

@@ -515,7 +515,7 @@ in ‘mailcap-mime-data’."
 In its current implementation ‘mailcap-add-mailcap-entry’ loses
 extra fields of an entry already existing in ‘mailcap-mime-data’.
 This test does not actually verify a correct result; it merely
-checks whether ‘mailcap-add-mailcap-entry’ behaviour is still the
+checks whether ‘mailcap-add-mailcap-entry’ behavior is still the
 incorrect one.  As such, it can be satisfied by any other result
 than the expected and known wrong one, and its success does not
 help to verify the correct addition and merging of an entry."