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+;;; ltx-base.el --- AUCTeX style for basic LaTeX commands.  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2004--2022 Free Software Foundation, Inc.
+
+;; Author: Frank Küster <frank@kuesterei.ch>
+;; Maintainer: auctex-devel@gnu.org
+;; Keywords: tex
+
+;; This file is part of AUCTeX.
+
+;; AUCTeX is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3, or (at your option)
+;; any later version.
+
+;; AUCTeX is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with AUCTeX; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+;; 02110-1301, USA.
+
+;;; Commentary:
+
+;; This file adds general support for basic LaTeX commands used for
+;; writing LaTeX class files (.cls), style files (.sty) and package
+;; files (.dtx).  Most of the macros are taken from clsguide.pdf.
+
+;;; Code:
+
+(require 'tex)
+
+;; Silence the compiler:
+(declare-function font-latex-add-keywords
+                  "font-latex"
+                  (keywords class))
+
+(TeX-add-style-hook
+ "ltx-base"
+ (lambda ()
+   (TeX-add-symbols
+
+    ;; 4.1 Identification.  Other '\Provide*' macros are available in
+    ;; latex.el
+    '("NeedsTeXFormat" "Format" [ "Release date" ])
+
+    ;; 4.2 Loading files
+    ;; \RequirePackage is provided in latex.el
+    '("RequirePackageWithOptions" "Package" [ "Release information" ])
+
+    '("LoadClass" [ "Options" ] "Class" [ "Release information" ])
+    '("LoadClassWithOptions"    "Class" [ "Release information" ])
+
+    ;; 4.3 Option declaration
+    '("DeclareOption" "Option" t)
+    '("DeclareOption*" t)
+
+    ;; 4.4 Commands within option code
+    '("CurrentOption" 0)
+    '("OptionNotUsed" 0)
+
+    ;; 4.5 Moving options around
+    '("PassOptionsToPackage" "Option(s) list" "Package")
+    '("PassOptionsToClass" "Option(s) list" "Class")
+
+    ;; 4.6 Delaying code
+    '("AtEndOfPackage" t)
+    '("AtEndOfClass" t)
+    '("AtBeginDocument" t)
+    '("AtEndDocument" t)
+    '("AtBeginDvi" t)
+
+    ;; 4.7 Option processing
+    '("ProcessOptions" (TeX-arg-literal "\\relax"))
+    "ProcessOptions*"
+    '("ExecuteOptions" "Option list")
+
+    ;; 4.8 Safe file commands
+    '("IfFileExists" "File" 2)
+    '("InputIfFileExists" "File" 2)
+
+    ;; 4.9 Reporting errors, etc
+    '("ClassError" "Class name" "Error text" t)
+    '("PackageError" "Package name" "Error text" t)
+
+    '("ClassWarning" "Class name" t)
+    '("PackageWarning" "Package name" t)
+    '("ClassWarningNoLine" "Class name" t)
+    '("PackageWarningNoLine" "Package name" t)
+
+    '("ClassInfo" "Class name" t)
+    '("PackageInfo" "Package name" t)
+
+    '("MessageBreak" 0)
+    '("message" "Log Message")
+
+    ;; 4.10 Defining commands
+    '("DeclareRobustCommand"
+      TeX-arg-define-macro [ TeX-arg-define-macro-arguments ] t)
+    '("DeclareRobustCommand*"
+      TeX-arg-define-macro [ TeX-arg-define-macro-arguments ] t)
+
+    '("CheckCommand" TeX-arg-macro [ TeX-arg-define-macro-arguments ] t)
+    '("CheckCommand*" TeX-arg-macro [ TeX-arg-define-macro-arguments ] t)
+
+    ;; 5.1 Layout parameters
+    ;; \paperheight & \paperwidth are provided in latex.el
+
+    ;; 5.2 Case changing
+    ;; \MakeUppercase & \MakeLppercase are provided in latex.el
+
+    ;; 5.4 Better user-defined math display environments
+    "ignorespacesafterend"
+
+    ;; 5.5 Normalising spacing
+    "normalsfcodes"
+
+    ;; Some general macros not mentioned in clsguide.pdf
+    '("@addtoreset" TeX-arg-counter (TeX-arg-counter "Within counter"))
+    '("addpenalty" "Penalty")
+    '("@ifundefined" TeX-arg-macro 2)
+    '("@ifnextchar" (TeX-arg-literal " ") (TeX-arg-free "Character") 2)
+    '("expandafter" 0))
+
+   ;; Fontification
+   (when (and (featurep 'font-latex)
+              (eq TeX-install-font-lock 'font-latex-setup))
+     (font-latex-add-keywords '(("NeedsTeXFormat"       "{[")
+                                ("RequirePackageWithOptions" "{[")
+                                ("LoadClass"            "[{[")
+                                ("LoadClassWithOptions" "{[")
+                                ;; Don't fontify the second argument
+                                ;; which will contain code:
+                                ("DeclareOption"         "*{")
+                                ("CurrentOption"         "")
+                                ("OptionNotUsed"         "")
+                                ("PassOptionsToPackage"  "{{")
+                                ("PassOptionsToClass"    "{{")
+
+                                ("AtEndOfPackage"  "")
+                                ("AtEndOfClass"    "")
+                                ("AtBeginDocument" "")
+                                ("AtEndDocument"   "")
+                                ("AtBeginDvi"      "")
+
+                                ("ProcessOptions" "*")
+                                ("ExecuteOptions" "{")
+                                ("DeclareRobustCommand" "*|{\\[[{")
+                                ("CheckCommand"         "*|{\\[[{"))
+                              'function)))
+ TeX-dialect)
+
+;; Local Variables:
+;; coding: utf-8
+;; End:
+
+;;; ltx-base.el ends here