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Diffstat (limited to 'elpa/auctex-13.1.3/tex-font.el')
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diff --git a/elpa/auctex-13.1.3/tex-font.el b/elpa/auctex-13.1.3/tex-font.el new file mode 100644 index 0000000..5f483d8 --- /dev/null +++ b/elpa/auctex-13.1.3/tex-font.el @@ -0,0 +1,178 @@ +;;; tex-font.el --- Font-Lock support stolen from Emacs 21. -*- lexical-binding: t; -*- +;; +;; Copyright (C) 1985-2021 Free Software Foundation, Inc. + +;; Maintainer: auctex-devel@gnu.org +;; Keywords: tex, faces + +;; This file is part of AUC TeX. + +;; AUC TeX 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. + +;; AUC TeX 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 AUC TeX; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, +;; Boston, MA 02110-1301, USA. + +;;; Comments: + +;; Please keep this file in sync with GNU Emacs 21. + +;;; Code: + +(defconst tex-font-lock-keywords-1 + (eval-when-compile + (let* (;; Names of commands whose arg should be fontified as heading, etc. + (headings (regexp-opt + '("title" "begin" "end" "chapter" "part" + "section" "subsection" "subsubsection" + "paragraph" "subparagraph" "subsubparagraph" + "newcommand" "renewcommand" "newenvironment" + "newtheorem") + t)) + (variables (regexp-opt + '("newcounter" "newcounter*" "setcounter" "addtocounter" + "setlength" "addtolength" "settowidth") + t)) + (includes (regexp-opt + '("input" "include" "includeonly" "bibliography" + "epsfig" "psfig" "epsf" "nofiles" "usepackage" + "documentstyle" "documentclass" "verbatiminput" + "includegraphics" "includegraphics*") + t)) + ;; Miscellany. + (slash "\\\\") + (opt " *\\(\\[[^]]*\\] *\\)*") + ;; This would allow highlighting \newcommand\CMD but requires + ;; adapting subgroup numbers below. + ;; (arg "\\(?:{\\(\\(?:[^{}\\]+\\|\\\\.\\|{[^}]*}\\)+\\)\\|\\\\[a-z*]+\\)")) + (arg "{\\(\\(?:[^{}\\]+\\|\\\\.\\|{[^}]*}\\)+\\)")) + (list + ;; Heading args. + (list (concat slash headings "\\*?" opt arg) + ;; If ARG ends up matching too much (if the {} don't match, f.ex) + ;; jit-lock will do funny things: when updating the buffer + ;; the re-highlighting is only done locally so it will just + ;; match the local line, but defer-contextually will + ;; match more lines at a time, so ARG will end up matching + ;; a lot more, which might suddenly include a comment + ;; so you get things highlighted bold when you type them + ;; but they get turned back to normal a little while later + ;; because "there's already a face there". + ;; Using `keep' works around this un-intuitive behavior as well + ;; as improves the behavior in the very rare case where you do + ;; have a comment in ARG. + 3 'font-lock-function-name-face 'keep) + (list (concat slash "\\(re\\)?newcommand\\** *\\(\\\\[A-Za-z@]+\\)") + 2 'font-lock-function-name-face 'keep) + ;; Variable args. + (list (concat slash variables " *" arg) 2 'font-lock-variable-name-face) + ;; Include args. + (list (concat slash includes opt arg) 3 'font-lock-builtin-face) + ;; Definitions. I think. + '("^[ \t]*\\\\def *\\\\\\(\\(\\w\\|@\\)+\\)" + 1 font-lock-function-name-face)))) + "Subdued expressions to highlight in TeX modes.") + +(defconst tex-font-lock-keywords-2 + (append tex-font-lock-keywords-1 + (eval-when-compile + (let* (;; + ;; Names of commands whose arg should be fontified with fonts. + (bold (regexp-opt '("textbf" "textsc" "textup" + "boldsymbol" "pmb") + t)) + (italic (regexp-opt '("textit" "textsl" "emph") t)) + ;; (type (regexp-opt '("texttt" "textmd" "textrm" "textsf") t)) + ;; + ;; Names of commands whose arg should be fontified as a citation. + (citations (regexp-opt + '("label" "ref" "pageref" "vref" "eqref" + "cite" "nocite" "index" "glossary" "bibitem" + ;; These are text, rather than citations. + ;; "caption" "footnote" "footnotemark" "footnotetext" + ) + t)) + ;; + ;; Names of commands that should be fontified. + (specials (regexp-opt + '("\\" "\\*" ;; "-" + "linebreak" "nolinebreak" "pagebreak" "nopagebreak" + "newline" "newpage" "clearpage" "cleardoublepage" + "displaybreak" "allowdisplaybreaks" "enlargethispage") + t)) + (general "\\([a-zA-Z@]+\\**\\|[^ \t\n]\\)") + ;; + ;; Miscellany. + (slash "\\\\") + (opt " *\\(\\[[^]]*\\] *\\)*") + (arg "{\\(\\(?:[^{}\\]+\\|\\\\.\\|{[^}]*}\\)+\\)")) + (list + ;; + ;; Citation args. + (list (concat slash citations opt arg) 3 'font-lock-constant-face) + ;; + ;; Text between `` quotes ''. + (cons (concat (regexp-opt `("``" "\"<" "\"`" "<<" "«") t) + "[^'\">»]+" ;a bit pessimistic + (regexp-opt `("''" "\">" "\"'" ">>" "»") t)) + 'font-lock-string-face) + ;; + ;; Command names, special and general. + (cons (concat slash specials) 'font-lock-warning-face) + (concat slash general) + ;; + ;; Font environments. It seems a bit dubious to use `bold' etc. faces + ;; since we might not be able to display those fonts. + (list (concat slash bold " *" arg) 2 '(quote bold) 'append) + (list (concat slash italic " *" arg) 2 '(quote italic) 'append) + ;; (list (concat slash type arg) 2 '(quote bold-italic) 'append) + ;; + ;; Old-style bf/em/it/sl. Stop at `\\' and un-escaped `&', for tables. + (list (concat "\\\\\\(\\(bf\\)\\|em\\|it\\|sl\\)\\>" + "\\(\\([^}&\\]\\|\\\\[^\\]\\)+\\)") + 3 '(if (match-beginning 2) 'bold 'italic) 'append))))) + "Gaudy expressions to highlight in TeX modes.") + +(defvar tex-font-lock-keywords tex-font-lock-keywords-1 + "Default expressions to highlight in TeX modes.") + + +(defface tex-math-face + '((t :inherit font-lock-string-face)) + "Face used to highlight TeX math expressions." + :group 'tex) +(defvar tex-math-face 'tex-math-face) + +;; Use string syntax but math face for $...$. +(defun tex-font-lock-syntactic-face-function (state) + (if (nth 3 state) tex-math-face font-lock-comment-face)) + +;;;###autoload +(defun tex-font-setup () + "Setup font lock support for TeX." + (set (make-local-variable 'font-lock-defaults) + '((tex-font-lock-keywords + tex-font-lock-keywords-1 tex-font-lock-keywords-2) + nil nil ((?$ . "\"")) nil + ;; Who ever uses that anyway ??? + (font-lock-mark-block-function . mark-paragraph) + (font-lock-syntactic-face-function + . tex-font-lock-syntactic-face-function))) + ) + +(provide 'tex-font) + +;; Local Variables: +;; coding: utf-8 +;; End: + +;;; tex-font.el ends here |