diff --git a/style/babel.el b/style/babel.el
index 2561317e474..f33c3c6d041 100644
--- a/style/babel.el
+++ b/style/babel.el

@@ -1,4 +1,4 @@

-;;; babel.el --- AUCTeX style for `babel.sty' version 3.88. -*- lexical-binding: t; -*-

+;;; babel.el --- AUCTeX style for `babel.sty' v26.4 -*- lexical-binding: t; -*-

;; Copyright (C) 2005-2026 Free Software Foundation, Inc.

@@ -24,7 +24,7 @@

;;; Commentary:

-;; This file adds support for `babel.sty' version 3.88 from 2023/04/18.

+;; This file adds support for `babel.sty' v26.4 from 2026-03-08.

;;; Code:

@@ -101,7 +101,14 @@

("main")

("script")

("language")

- ("mapfont")

+ ("alph")

+ ("Alph")

+ ("casing")

+ ("onchar" ("ids" "fonts" "letters"))

+ ("transforms")

+ ("interchar")

+ ("justification" ("unhyphenated" "kashida" "elongated" "padding"))

+ ("linebreaking" ("unhyphenated" "kashida" "elongated" "padding"))

("intraspace")

("intrapenalty"))

"Key=value options for `\\babelprovide' macro from `babel' package.")

@@ -249,7 +256,29 @@

;; New symbols

(TeX-add-symbols

- ;; 1.7 Basic language selectors

+ ;; 1.8. Fonts in Unicode engines

+ `("babelfont"

+ [TeX-arg-completing-read-multiple LaTeX-babel-language-list

+ "Language(s)"]

+ (TeX-arg-completing-read ("rm" "sf" "tt") "Font family")

+ [TeX-arg-key-val (LaTeX-fontspec-font-features)]

+ LaTeX-fontspec-arg-font

+ ,(lambda (_)

+ ;; Run `TeX-check-engine-add-engines' and then

+ ;; load `fontspec.el' if not already loaded and

+ ;; make sure the key-vals are up to date.

+ (unless (member "fontspec" (TeX-style-list))

+ (TeX-check-engine-add-engines 'luatex 'xetex)

+ (TeX-run-style-hooks "fontspec")

+ (LaTeX-fontspec-auto-cleanup))

+ ;; Now search back for the Font family arg:

+ (save-excursion

+ (re-search-backward "\\\\babelfont\\(?:\\[[^]]*\\]\\)?{\\([^}]+\\)}"

+ (line-beginning-position) t)

+ (LaTeX-add-babel-babelfonts (match-string-no-properties 1))

+ (LaTeX-babel-cleanup-babelfont))))

+

+ ;; 1.9 Basic language selectors

'("selectlanguage"

(TeX-arg-completing-read (LaTeX-babel-active-languages)

"Language"))

@@ -259,7 +288,8 @@

"Language")

t)

- ;; 1.9 More on selection

+ ;; 2. More on language loading and selection

+ ;; 2.1. A few tools

'("babeltags" t)

'("babelensure"

(TeX-arg-key-val

@@ -274,81 +304,166 @@

"LY1" "LV1" "LGR"))))

(TeX-arg-completing-read (LaTeX-babel-active-languages)

"Language"))

- ;; 1.10 Shorthands

- '("shorthandon" "Shorthands list")

- '("shorthandoff" "Shorthands list")

- '("shorthandoff*" "Shorthands list")

- '("useshorthands" "Character")

- '("useshorthands*" "Character")

- '("defineshorthand"

- [TeX-arg-completing-read-multiple (LaTeX-babel-active-languages)

- "Language(s)"]

+ '("AfterBabelLanguage"

+ (TeX-arg-completing-read LaTeX-babel-language-list "Language")

+ t)

+

+ ;; 2.2. Accessing language info

+ '("localename" 0)

+ '("mainlocalename" 0)

+ '("languagename" 0)

+ '("iflanguage"

+ (TeX-arg-completing-read (LaTeX-babel-active-languages)

+ "Language")

t nil)

- '("languageshorthands"

+ '("localeinfo"

+ (TeX-arg-completing-read ("name.english"

+ "tag.ini"

+ "tag.bcp47"

+ "language.tag.bcp47"

+ "tag.opentype"

+ "script.name"

+ "script.tag.bcp47"

+ "script.tag.opentype"

+ "region.tag.bcp47"

+ "variant.tag.bcp47"

+ "extension.x.tag.bcp47"

+ "extension.t.tag.bcp47"

+ "extension.u.tag.bcp47")

+ "Field"))

+ '("localeinfo*"

+ (TeX-arg-completing-read ("name.english"

+ "tag.ini"

+ "tag.bcp47"

+ "language.tag.bcp47"

+ "tag.opentype"

+ "script.name"

+ "script.tag.bcp47"

+ "script.tag.opentype"

+ "region.tag.bcp47"

+ "variant.tag.bcp47"

+ "extension.x.tag.bcp47"

+ "extension.t.tag.bcp47"

+ "extension.u.tag.bcp47")

+ "Field"))

+ '("getlocaleproperty" TeX-arg-define-macro "Locale" t)

+ '("getlocaleproperty*" TeX-arg-define-macro "Locale" t)

+ '("localeid" 0)

+ '("ShowLocaleProperties"

+ (TeX-arg-completing-read LaTeX-babel-language-list "Language"))

+ '("LocaleForEach" t)

+

+ ;; 2.6. Selection based on BCP 47 tags

+ '("babeladjust"

+ (TeX-arg-key-val (("autoload.bcp47" ("on" "off"))

+ ("autoload.bcp47.options" ("import"))

+ ("autoload.bcp47.prefix"))))

+

+ ;; 3.1. Captions

+ '("setlocalecaption"

+ (TeX-arg-completing-read (LaTeX-babel-active-languages))

+ (TeX-arg-completing-read ("preface"

+ "ref"

+ "abstract"

+ "bib"

+ "chapter"

+ "appendix"

+ "contents"

+ "listfigure"

+ "listtable"

+ "index"

+ "figure"

+ "table"

+ "part"

+ "encl"

+ "cc"

+ "headto"

+ "page"

+ "see"

+ "also"

+ "proof"

+ "glossary"))

+ "New value")

+

+ ;; 3.3. Language attributes

+ '("languageattribute"

(TeX-arg-completing-read (LaTeX-babel-active-languages)

- "Language"))

- '("babelshorthand" "Short hand")

- '("ifbabelshorthand" "Character" t nil)

- '("aliasshorthand" "Original" "Alias")

+ "Language")

+ t)

- ;; 1.12 The base option

- '("AfterBabelLanguage"

- (TeX-arg-completing-read LaTeX-babel-language-list "Language")

+ ;; 3.6. Hooks

+ '("AddBabelHook"

+ [TeX-arg-completing-read (LaTeX-babel-active-languages)

+ "Language"]

+ "Name"

+ (TeX-arg-completing-read ("adddialect"

+ "patterns"

+ "hyphenation"

+ "defaultcommands"

+ "encodedcommands"

+ "stopcommands"

+ "write"

+ "beforeextras"

+ "afterextras"

+ "stringprocess"

+ "initiateactive"

+ "afterreset"

+ "begindocument"

+ "foreign"

+ "everylanguage"

+ "loadkernel"

+ "loadpatterns"

+ "loadexceptions")

+ "Event")

t)

- ;; 1.14 Selecting fonts

- `("babelfont"

- [TeX-arg-completing-read-multiple LaTeX-babel-language-list

- "Language(s)"]

- (TeX-arg-completing-read ("rm" "sf" "tt") "Font family")

- [TeX-arg-key-val (LaTeX-fontspec-font-features)]

- LaTeX-fontspec-arg-font

- ,(lambda (_)

- ;; Run `TeX-check-engine-add-engines' and then

- ;; load `fontspec.el' if not already loaded and

- ;; make sure the key-vals are up to date.

- (unless (member "fontspec" (TeX-style-list))

- (TeX-check-engine-add-engines 'luatex 'xetex)

- (TeX-run-style-hooks "fontspec")

- (LaTeX-fontspec-auto-cleanup))

- ;; Now search back for the Font family arg:

- (save-excursion

- (re-search-backward "\\\\babelfont\\(?:\\[[^]]*\\]\\)?{\\([^}]+\\)}"

- (line-beginning-position) t)

- (LaTeX-add-babel-babelfonts (match-string-no-properties 1))

- (LaTeX-babel-cleanup-babelfont))))

+ ;; 3.7. Manage auxiliary files

+ '("BabelContentsFiles" 0)

+

+ ;; 3.8. Code based on the selector

+ '("IfBabelSelectorTF"

+ (TeX-arg-completing-read-multiple ("select"

+ "other"

+ "other*"

+ "foreign")

+ "Selectors")

+ 2)

- ;; 1.16 Creating a language

+ ;; 4. Creating a language

'("babelprovide"

[TeX-arg-key-val LaTeX-babel-babelprovide-key-val-options]

(TeX-arg-completing-read LaTeX-babel-language-list "Language"))

- ;; 1.19 Accessing language info

- '("languagename" 0)

- '("iflanguage"

- (TeX-arg-completing-read (LaTeX-babel-active-languages)

- "Language")

- t nil)

-

- ;; 1.20 Hyphenation and line breaking

- '("babelhyphen"

- (TeX-arg-completing-read ("soft" "hard" "repeat" "nobreak" "empty") "Type/Text"))

- '("babelhyphen*"

- (TeX-arg-completing-read ("soft" "hard" "repeat" "nobreak" "empty") "Type/Text"))

+ ;; 5.1. Hyphenation and line breaking - 1. Commands

'("babelhyphenation"

[TeX-arg-completing-read-multiple LaTeX-babel-language-list

"Language(s)"]

t)

- ;; 1.23 Selecting scripts

- '("ensureascii" "Text")

+ '("babelhyphen"

+ (TeX-arg-completing-read ("soft" "hard" "repeat" "nobreak" "empty") "Type/Text"))

+ '("babelhyphen*"

+ (TeX-arg-completing-read ("soft" "hard" "repeat" "nobreak" "empty") "Type/Text"))

- ;; 1.25 Language attributes

- '("languageattribute"

+ ;; 5.3. Shorthands – 1. Commands

+ '("shorthandon" "Shorthands list")

+ '("shorthandoff" "Shorthands list")

+ '("shorthandoff*" "Shorthands list")

+ '("useshorthands" "Character")

+ '("useshorthands*" "Character")

+ '("defineshorthand"

+ [TeX-arg-completing-read-multiple (LaTeX-babel-active-languages)

+ "Language(s)"]

+ t nil)

+ '("languageshorthands"

(TeX-arg-completing-read (LaTeX-babel-active-languages)

- "Language")

- t))

+ "Language"))

+ '("babelshorthand" "Short hand")

+ '("ifbabelshorthand" "Character" t nil)

+

+ ;; 5.9. Scripts

+ '("ensureascii" "Text") )

;; Don't increase indentation at various \if* macros:

(let ((exceptions '("ifbabelshorthand"

@@ -357,8 +472,14 @@

(add-to-list 'LaTeX-indent-begin-exceptions-list elt t))

(LaTeX-indent-commands-regexp-make))

- ;; New environments: 1.8 Auxiliary language selectors

+ ;; New environments:

(LaTeX-add-environments

+ ;; 1.9. Basic language selectors

+ '("selectlanguage" LaTeX-env-args

+ (TeX-arg-completing-read (LaTeX-babel-active-languages)

+ "Language"))

+

+ ;; 1.10. Auxiliary language selectors

'("otherlanguage" LaTeX-env-args

(TeX-arg-completing-read (LaTeX-babel-active-languages)

"Language"))

@@ -373,21 +494,45 @@

;; Fontification

(when (and (featurep 'font-latex)

(eq TeX-install-font-lock 'font-latex-setup))

- (font-latex-add-keywords '(("selectlanguage" "{")

+ (font-latex-add-keywords '(;; 1.8. Fonts in Unicode engines

+ ("babelfont" "[{[{")

+ ;; 1.9 Basic language selectors

+ ("selectlanguage" "{")

+ ;; 2.1. A few tools

("babeltags" "{")

("babelensure" "{{")

+ ("AfterBabelLanguage" "{")

+ ;; 2.2. Accessing language info

+ ("languagename" "")

+ ("iflanguage" "{{{")

+ ("localeinfo" "*{")

+ ("getlocaleproperty" "*|{\\{{")

+ ("localeid" "*{")

+ ("ShowLocaleProperties" "{")

+ ("LocaleForEach" "")

+ ;; 2.6. Selection based on BCP 47 tags

+ ("babeladjust" "{")

+ ;; 3.1. Captions

+ ("setlocalecaption" "{{{")

+ ;; 3.3. Language attributes

+ ("languageattribute" "{")

+ ;; 3.6. Hooks

+ ("AddBabelHook" "[{{")

+ ;; 3.7. Manage auxiliary files

+ ("BabelContentsFiles" "")

+ ;; 3.8. Code based on the selector

+ ("IfBabelSelectorTF" "{")

+ ;; 4. Creating a language

+ ("babelprovide" "[{")

+ ("babelhyphenation" "[{")

+ ("babelhyphen" "*{")

+ ;; 5.3. Shorthands – 1. Commands

("shorthandon" "{")

("shorthandoff" "*{")

("useshorthands" "*{")

("languageshorthands" "{")

("babelshorthand" "{")

- ("AfterBabelLanguage" "{")

- ("babelfont" "[{[{")

- ("babelprovide" "[{")

- ("languagename" "")

- ("iflanguage" "{{{")

- ("babelhyphen" "*{")

- ("babelhyphenation" "[{")

+ ;; 5.9. Scripts

("ensureascii" "{"))

'function)

(font-latex-add-keywords '(("defineshorthand" "[{{")

@@ -402,24 +547,13 @@

(progn

(TeX-load-style "fontenc")

(append

+ ;; 2.3. Package options

`(("KeepShorthandsActive")

- ("activeacute")

- ("activegrave")

- ("shorthands" ("off"))

- ("safe" ("none" "ref" "bib"))

- ("math" ("active" "normal"))

- ("config")

- ("main" ,LaTeX-babel-language-list)

("headfoot" ,LaTeX-babel-language-list)

("noconfigs")

- ("nocase")

- ("silent")

+ ("config")

("showlanguages")

- ("nocase")

("silent")

- ("strings" ,(append

- LaTeX-fontenc-package-options

- '("generic" "unicode" "encoded")))

("hyphenmap" ("off" "first" "select"

"other" "other*"))

("bidi" ("default" "basic" "basic-r"

@@ -427,10 +561,21 @@

("layout" ("sectioning" "counters" "lists"

"contents" "footnotes" "captions"

"columns" "graphics" "extras"))

- ("provide" ("*"))

- ("provide+" ("*"))

- ("provide*" ("*"))

- ("base"))

+ ("provide" ("*" "!"))

+ ("provide+" ("*" "!"))

+ ("provide*" ("*" "!"))

+ ("main" ,LaTeX-babel-language-list)

+ ;; 2.4. The baseoption

+ ("base")

+ ;; 5.4. Shorthands - 2. Package options

+ ("activeacute")

+ ("activegrave")

+ ("shorthands" ("off"))

+ ("safe" ("none" "ref" "bib"))

+ ("math" ("active" "normal"))

+ ("strings" ,(append

+ LaTeX-fontenc-package-options

+ '("generic" "unicode" "encoded"))))

(mapcar #'list LaTeX-babel-language-list)))

"Package options for the babel package.")