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|
;;; font-latex.el --- LaTeX fontification for Font Lock mode.
;; Copyright (C) 1996, 1997, 1998 Peter S. Galbraith
;; Authors: Peter S. Galbraith <galbraith@mixing.qc.dfo.ca>
;; Simon Marshall <Simon.Marshall@esrin.esa.it>
;; Maintainer: Peter S. Galbraith <galbraith@mixing.qc.dfo.ca>
;; Created: 06 July 1996
;; Version: 0.509 (06 Feb 98)
;; Keywords: LaTeX faces
;; RCS $Id: font-latex.el,v 1.53 1998/02/06 15:53:44 rhogee Exp $
;; Note: RCS version number does not correspond to release number.
;; LCD Archive Entry: (Not yet submitted!)
;; font-latex|Peter Galbraith|galbraith@mixing.qc.dfo.ca|
;; LaTeX fontification for font-lock|
;; 06-Jul-1996|0.01|~/modes/font-latex.el|
;; The archive is archive.cis.ohio-state.edu in /pub/gnu/emacs/elisp-archive.
;;; This file is not part of GNU Emacs.
;; This package 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 2, or (at your option)
;; any later version.
;; This package 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; This package enhances font-lock fontification patterns for LaTeX.
;; New versions of this package (if they exist) may be found at:
;; ftp://ftp.phys.ocean.dal.ca/users/rhogee/elisp/font-latex.el
;; Description:
;; This package enhances font-lock fontification patterns for LaTeX.
;; font-lock mode is a minor mode that causes your comments to be
;; displayed in one face, strings in another, reserved words in another,
;; and so on.
;;
;; Please see the accompanying file font-latex.tex for a demo of what
;; font-latex is supposed to do at different fontification levels.
;; Installation instructions:
;;
;; Put this file in your emacs load-path, and byte-compile it:
;; M-x byte-compile-file
;; ** It runs faster when you byte-compile it! **
;;
;; Then all you need to do is add this form to your .emacs file:
;;
;; (if window-system
;; (require 'font-latex))
;;
;; Turning on font-latex:
;;
;; After font-latex is loaded (or `required'), it will be automatically
;; used whenever you enter `font-lock-mode' on a LaTeX buffer. Therefore,
;; I direct you to the file font-lock.el that comes with Emacs for more
;; info.
;;
;; Turning on Font-lock automatically:
;;
;; If you choose to turn-on font-lock by default using a mode-hook,
;; there is an order to respect with-respect-to loading font-latex.
;; Do either:
;;
;; (if window-system
;; (progn
;; (require 'font-latex)
;; (add-hook 'latex-mode-hook 'turn-on-font-lock 'append)
;; (add-hook 'LaTeX-mode-hook 'turn-on-font-lock 'append)))
;; or
;; (if window-system
;; (progn
;; (add-hook 'latex-mode-hook 'turn-on-font-lock)
;; (add-hook 'LaTeX-mode-hook 'turn-on-font-lock)
;; (require 'font-latex)))
;;
;; It's probably not a bad idea to always append 'turn-on-font-lock
;; such that it is always sure to be last.
;;
;; Fontification Levels:
;;
;; There are two levels of fontification, selected by the value of the
;; font-lock variable font-lock-maximum-decoration. There are ways
;; documented in font-latex.el to set this differently for each mode that
;; uses font-lock, but if you are unsure and are running on a fast enough
;; machine, try putting this in your ~/.emacs file:
;; (setq font-lock-maximum-decoration t)
;; It probably best to put it before the (require 'font-latex) statement.
;;
;; Changing colours
;;
;; Okay, so you hate the colours I picked. How do you change them you ask?
;; First, find the font name to change using the command:
;; M-x list-text-properties-at
;; Then, suppose you got `font-latex-math-face', edit ~/.Xdefaults and add:
;; Emacs.font-latex-math-face.attributeForeground: blue
;; without the semi-colon I'm using here ascomment delimiters, of course.
;;
;; Lazy-lock users:
;;
;; lazy-lock and font-latex don't work too well together (up to Emacs 19.33
;; and XEmacs 19.14 anyway). font-latex uses functions to find text to
;; fontify that may span more than one line, and this doesn't suit
;; lazy-lock's search limits too well. Recent versions of font-latex are
;; a bit better, and perhaps you can live with the occasional
;; mis-fontification.
;;
;; Old hilit19 (and hilit-LaTeX) users:
;;
;; If you are upgrading from using hilit-LaTeX.el or were using hilit19,
;; you must disable hilit19 (at least for latex mode) in order to use
;; font-latex.el. Here's how:
;;
;; - If you don't care to use hilit19 at all, don't `load' or `require' it
;; in your ~/.emacs file by removing the "(require 'hilit-LaTeX)" line.
;; - If you wish to use hilit19 everywhere but in latex mode, add the
;; following before your `load' or `require' hilit19:
;;
;; (setq hilit-mode-enable-list '(not latex-mode))
;;
;; You can tell you are using font-latex instead of hilit-LaTeX because:
;;
;; - colours will be different
;; - You'll see a message like `Fontifying font-latex.tex...done'
;; instead of `highlighting 1: \(^\|[^\\]\)\(\\[a-zA-Z\\]+\)'
;; ----------------------------------------------------------------------------
;;; Change log:
;; V0.509 20Feb98 PSG (RCS V1.53)
;; XEmacs infinite loop in font-latex-match-font-inside-braces cache.
;; V0.508 06Feb98 PSG (RCS V1.51)
;; Created font-latex-match-textual; changed font-latex-math-face colour.
;; V0.507 30Jan98 PSG (RCS V1.50)
;; Removed font-latex-find-matching-close because it broke the cache.
;; Rewrote the cache method. Ouch!
;; V0.506 08Jan98 PSG (RCS V1.48)
;; Added variables font-latex-match-variable, font-latex-match-function
;; font-latex-match-reference (built using reexp-opt).
;; V0.505 07Jan98 PSG (RCS V1.47)
;; XEmacs20 has defface.
;; V0.504 20Oct97 Kevin Ruland <kruland@seistl.com> (RCS V1.46)
;; Fixed the real bug in font-latex-match-command-outside-arguments
;; V0.503 16Oct97 PSG (RCS V1.45)
;; Patched font-latex-match-command-outside-arguments for allow for
;; strange interaction with AUC-TeX's LaTeX-environment command.
;; V0.502 07Oct97 (RCS V1.44)
;; Kevin Ruland <kevin@rodin.wustl.edu> edits font-latex-find-matching-close
;; PSG: Changed OliveGreen for OliveDrab, found in rgb.txt
;; V0.501 24Sep97 (RCS V1.42)
;; Kevin Ruland <kevin@rodin.wustl.edu> added font-latex-find-matching-close
;; used instead of scan-sexp to find arguments containing extra brackets.
;; V0.500 23Sep97 PSG (RCS V1.41)
;; - Support for Emacs-20 (No customize support yet)
;; V0.403 19Nov96 (RCS V1.37)
;; - Christoph Wedler <wedler@fmi.uni-passau.de>
;; XEmacs patch for local math-font
;; - Changed scheme for fontification of \section*{...}
;; V0.402 13Nov96 PSG (RCS V1.35)
;; - Embeded comments handled.
;; - Better XEmacs initilisation.
;; V0.401 12Nov96 PSG (RCS V1.34) - Nothing fontified when commented-out.
;; V0.400 11Nov96 PSG (RCS V1.33)
;; - Stab at on-the-fly multiline.
;; - mono support: <Johannes.Weinert@Informatik.Uni-Oldenburg.DE>
;; V0.314 16Oct96 PSG - Support for dark background removed for XEmacs.
;; V0.313 07Oct96 PSG (RCS V1.31) - Support for dark background.
;; V0.312 26Aug96 PSG (RCS V1.30) - Added font-latex-commented-outp.
;; V0.311 22Aug96 PSG (RCS V1.29) - fixed for XEmacs.
;; V0.310 22Aug96 simon (RCS V1.27)
;; - make font-latex-setup run font-lock-make-faces before variable trickery.
;; - set font-latex-string-face to the global value of font-lock-string-face.
;; V0.309 21Aug96 PSG (RCS V1.26)
;; - new font-latex-math-face done by string syntax. User may modify it.
;; - new font-latex-string-face.
;; V0.308 15Aug96 PSG (RCS V1.25)
;; - $$...$$ gets font-latex-math-face
;; - font-latex-match-math-envII fixed.
;; V0.307 14Aug96 PSG (RCS V1.23) - setup okay if loaded in a latex-mode-hook
;; V0.306 14Aug96 PSG (RCS V1.22) - added "item" to font-latex-match-function
;; V0.305 14Aug96 PSG (RCS V1.20) - use keep in font-latex-match-math-envII
;; V0.304 14Aug96 PSG (RCS V1.18) - minor comment edits.
;; V0.303 14Aug96 simon (RCS V1.17)
;; - rewrote font-latex-match-math-envII like font-latex-match-quotation
;; V0.302 12Aug96 PSG (RCS V1.16)
;; - (goto-char end) in condition-case error to avoid infinite loops.
;; V0.301 08Aug96 PSG (RCS V1.14)
;; - Better faces in XEmacs.
;; V0.300 07Aug96 PSG (RCS V1.12)
;; - Changed font-latex-match-font-inside-braces again for stranded \bf
;; - "[a-z]+box" changed
;; - font-latex-match-math-env checks preceding-char for \\[
;; - use eval-after-compile in font-latex-match-math-envII
;; V0.201 05Aug96 PSG added \\(display\\)?math to Simon's changes
;; V0.200 05Aug96 simon: (RCS V1.10)
;; - fixed font-latex-match-command-outside-arguments
;; - rewrote font-latex-match-font-outside-braces like above
;; - rewrote font-latex-match-font-inside-braces like above
;; V0.101 01Aug96 PSG added \\(display\\)?math
;; V0.100 01Aug96 PSG - massive new test version
;; V0.061 23Jul96 PSG
;; - Removed trailing "\\>" in warning-face regexp (fails with \\ \- \\*)
;; V0.06 23Jul96 PSG
;; - fixed dobib in font-latex-labels.
;; - shorter font regexp in levels 3+4.
;; - removed \item and & from type
;; - fixed font-latex-math-envII regexp
;; V0.05 22Jul96 PSG
;; - changed \ref etc to reference-face.
;; - \\b added in buggy \item[option] regexp (not really fixed).
;; - font-latex-labels regexp bug
;; V0.041 simon:
;; - added font-latex-match-command-outside-arguments
;; - rewrote font-latex-match-quotation and font-latex-bib-highlight-mouse
;; - rewrote then removed bib-cite functionality.
;; - general top-level cleanup
;; V0.04 11Jul96 PSG
;; - added font-lock-comment-start-regexp defined in 19.32
;; - encoded 8-bit characters to 7-bit.
;; V0.03 10Jul96 PSG
;; - font-latex-bib-cite-mouse-highlight-p can change after font-lock-defaults
;; is constructed.
;; V0.02 09Jul96 PSG
;; - added font-latex-bib-cite-mouse-highlight-p
;; - Fixed `overwrite' flags
;; V0.01 06Jul96 Peter S Galbraith - Created
;; ----------------------------------------------------------------------------
;;; Code:
(require 'font-lock)
(defvar font-latex-warning-face 'font-latex-warning-face
"Face to use for LaTeX major keywords.")
(defvar font-latex-sedate-face 'font-latex-sedate-face
"Face to use for LaTeX minor keywords.")
(defvar font-latex-italic-face 'font-latex-italic-face
"Face to use for LaTeX italics.")
(defvar font-latex-bold-face 'font-latex-bold-face
"Face to use for LaTeX bolds.")
(defvar font-latex-math-face 'font-latex-math-face
"Face to use for LaTeX math environments.")
(defvar font-latex-match-variable
(concat
"\\\\" "\\("
;;;(regexp-opt
;;; '("setlength" "settowidth" "setcounter" "addtolength" "addtocounter"))
"addto\\(counter\\|length\\)\\|set\\(counter\\|length\\|towidth\\)"
"\\)\\>")
"font-latex regexp to match LaTeX variable keywords.")
(defvar font-latex-match-reference
(concat
"\\\\" "\\("
;;;(regexp-opt
;;; '("nocite" "cite" "label" "pageref" "vref" "eqref" "ref"
;;; "include" "input" "bibliography"
;;; "index" "glossary" "footnote" "footnotemark" "footnotetext"))
"bibliography\\|cite[a-zA-Z]*\\|eqref\\|footnote\\(mark\\|text\\)?\\|"
"glossary\\|in\\(clude\\|dex\\|put\\)\\|label\\|nocite\\|pageref\\|ref\\|"
"vref"
"\\)\\>")
"font-latex regexp to match reference keywords.")
(defvar font-latex-match-function
(concat
"\\\\" "\\("
;;;(regexp-opt
;;; '("begin" "end"
;;; "pagenumbering"
;;; "thispagestyle" "pagestyle"
;;; "nofiles" "includeonly"
;;; "bibliographystyle" "documentstyle" "documentclass"
;;; "newenvironment" "newcommand" "newlength" "newtheorem" "newcounter"
;;; "renewenvironment" "renewcommand" "renewlength" "renewtheorem"
;;; "renewcounter"
;;; "usepackage" "fbox" "mbox" "sbox" "vspace" "hspace"))
"b\\(egin\\|ibliographystyle\\)\\|document\\(class\\|style\\)\\|"
"end\\|fbox\\|hspace\\|includeonly\\|mbox\\|"
"n\\(ew\\(co\\(mmand\\|unter\\)\\|environment\\|length\\|theorem\\)"
"\\|ofiles\\)\\|"
"page\\(numbering\\|style\\)\\|"
"renew\\(co\\(mmand\\|unter\\)\\|environment\\|length\\|theorem\\)\\|"
"sbox\\|thispagestyle\\|usepackage\\|vspace"
"\\)\\>")
"font-latex regexp to match LaTeX function keywords.")
(defvar font-latex-match-textual
(concat
"\\\\" "\\("
;;;(regexp-opt
;;; '("item" ;;;FIXME: does not have an {arg} so should treated elsewhere.
;;; "part" "chapter" "section" "subsection" "subsubsection"
;;; "paragraph" "subparagraph" "subsubparagraph"
;;; "title" "author" "date" "thanks" "address"
;;; "caption"))
"a\\(ddress\\|uthor\\)\\|c\\(aption\\|hapter\\)\\|date\\|item\\|"
"par\\(agraph\\|t\\)\\|"
"s\\(ection\\|"
"ub\\(paragraph\\|s\\(ection\\|ub\\(paragraph\\|section\\)\\)\\)\\)\\|"
"t\\(hanks\\|itle\\)"
"\\)\\>")
"font-latex regexp to match LaTeX function with text arguemnt.")
(defvar font-latex-keywords-1
(list
;; FIXME: Maybe I should put this in a function, use override but let
;; the function determine if commented-out.
(list (concat
"\\\\" "\\("
;;; (regexp-opt
;;; '("nopagebreak" "pagebreak" "newpage" "clearpage" "cleardoublepage"
;;; "enlargethispage" "nolinebreak" "linebreak" "newline"
;;; "-" "\\" "\\*" "displaybreak" "allowdisplaybreaks"))
"\\\\\\*\\|allowdisplaybreaks\\|clear\\(doublepage\\|page\\)\\|"
"displaybreak\\|enlargethispage\\|linebreak\\|"
"n\\(ew\\(line\\|page\\)\\|o\\(linebreak\\|pagebreak\\)\\)\\|"
"pagebreak\\|[\\-]"
"\\)")
'(0 font-latex-warning-face))
'("\\$\\$\\([^$]+\\)\\$\\$" 1 font-latex-math-face) ;;; $$...$$
'(font-latex-match-quotation . font-latex-string-face) ;;; ``...''
'(font-latex-match-font-outside-braces ;;;\textit{text}
(0 font-lock-keyword-face
append ;Override? [t 'keep 'prepend 'append]
;; Can't use prepend because that overwrites syntax fontification
;; e.g. comments.
t) ;Laxmatch? if t, do not signal error
(1 font-latex-italic-face append t)
(2 font-latex-bold-face append t)
(3 font-lock-type-face append t))
'(font-latex-match-font-inside-braces ;;;{\it text}
(0 font-lock-keyword-face append t)
(1 font-latex-italic-face append t)
(2 font-latex-bold-face append t)
(3 font-lock-type-face append t)))
"Subdued level highlighting for LaTeX modes.")
(defvar font-latex-keywords-2
(append font-latex-keywords-1
'((font-latex-match-reference ;;;\cite
(0 font-lock-keyword-face append t)
(1 font-lock-variable-name-face append t) ;;; [opt]
(2 font-lock-reference-face append t)) ;;; {key}
(font-latex-match-function ;;;\documentclass
(0 font-lock-keyword-face append t)
(1 font-lock-variable-name-face append t) ;;; [opt]
(2 font-lock-function-name-face append t)) ;;; {text}
(font-latex-match-textual ;;;\section
(0 font-lock-keyword-face append t)
(1 font-lock-variable-name-face append t) ;;; [opt]
(2 font-lock-type-face append t)) ;;; {text}
(font-latex-match-variable
(0 font-lock-keyword-face nil t)
(1 font-lock-variable-name-face append t)
(2 font-lock-variable-name-face append t))
(font-latex-match-math-env
(0 font-latex-math-face append t)) ;;;\(...\)
(font-latex-match-math-envII ;;;Math environ.
(0 font-latex-math-face append t))
("\\\\[@A-Za-z]+" ;;;Other commands
(0 font-latex-sedate-face append))))
"High level highlighting for LaTeX modes.")
(defvar font-latex-keywords font-latex-keywords-1
"Default expressions to highlight in TeX mode.")
;; End-User can stop reading here.
;; Make sure font-latex.el is supported. I don't claim to have tested this...
(if (if (save-match-data (string-match "Lucid\\|XEmacs" (emacs-version)))
(and (= emacs-major-version 19) (< emacs-minor-version 14))
(and (= emacs-major-version 19) (< emacs-minor-version 29)))
(error "`font-latex' was written for Emacs 19.29/XEmacs 19.14 or later"))
(defvar font-latex-is-XEmacs19
(and (not (null (save-match-data
(string-match "XEmacs\\|Lucid" emacs-version))))
(= 19 emacs-major-version)))
(defvar font-latex-is-XEmacs20
(and (not (null (save-match-data
(string-match "XEmacs\\|Lucid" emacs-version))))
(= 20 emacs-major-version)))
(defvar font-latex-is-Emacs19
(and (not font-latex-is-XEmacs19)
(not font-latex-is-XEmacs20)
(= 19 emacs-major-version)))
(defvar font-latex-is-Emacs20
(and (not font-latex-is-XEmacs19)
(not font-latex-is-XEmacs20)
(= 20 emacs-major-version)))
(defvar font-latex-string-face nil
"Face to use for strings. This is set by Font LaTeX.")
(defvar font-lock-comment-start-regexp nil
"Regexp to match the start of a comment.")
(eval-when-compile
(require 'cl))
(cond
((or font-latex-is-Emacs20
font-latex-is-XEmacs20)
(defface font-latex-bold-face
'((((class grayscale) (background light)) (:foreground "DimGray" :bold t))
(((class grayscale) (background dark)) (:foreground "LightGray" :bold t))
(((class color) (background light))
(:foreground "DarkOliveGreen" :bold t ))
(((class color) (background dark)) (:foreground "OliveDrab" :bold t ))
(t (:bold t)))
"Font Lock mode face used to bold LaTeX."
:group 'font-latex-highlighting-faces)
(defface font-latex-italic-face
'((((class grayscale) (background light))
(:foreground "DimGray" :italic t))
(((class grayscale) (background dark))
(:foreground "LightGray" :italic t))
(((class color) (background light))
(:foreground "DarkOliveGreen" :italic t ))
(((class color) (background dark))
(:foreground "OliveDrab" :italic t ))
(t (:italic t)))
"Font Lock mode face used to highlight italic LaTeX."
:group 'font-latex-highlighting-faces)
(defface font-latex-math-face
'((((class grayscale) (background light))
(:foreground "DimGray" :underline t))
(((class grayscale) (background dark))
(:foreground "LightGray" :underline t))
(((class color) (background light)) (:foreground "SaddleBrown"))
(((class color) (background dark)) (:foreground "burlywood"))
(t (:underline t)))
"Font Lock mode face used to highlight math in LaTeX."
:group 'font-latex-highlighting-faces)
(defface font-latex-sedate-face
'((((class grayscale) (background light)) (:foreground "DimGray"))
(((class grayscale) (background dark)) (:foreground "LightGray"))
(((class color) (background light)) (:foreground "DimGray"))
(((class color) (background dark)) (:foreground "LightGray"))
;;;(t (:underline t))
)
"Font Lock mode face used to highlight sedate stuff in LaTeX."
:group 'font-latex-highlighting-faces)
(copy-face 'font-lock-string-face 'font-latex-string-face)
(if font-latex-is-Emacs20
(copy-face 'font-lock-warning-face 'font-latex-warning-face)
(defface font-latex-warning-face
'((((class grayscale)(background light))(:foreground "DimGray" :bold t))
(((class grayscale)(background dark))(:foreground "LightGray" :bold t))
(((class color)(background light))(:foreground "red" :bold t ))
(((class color)(background dark))(:foreground "red" :bold t ))
(t (:bold t)))
"Font Lock for LaTeX major keywords."
:group 'font-latex-highlighting-faces)))
(font-latex-is-Emacs19
(if (not font-lock-face-attributes)
;; Otherwise I overwrite fock-lock-face-attributes.
(font-lock-make-faces))
(unless (assq 'font-latex-sedate-face font-lock-face-attributes)
(cond
;; FIXME: Add better conditions for grayscale.
((memq font-lock-display-type '(mono monochrome grayscale greyscale
grayshade greyshade))
(setq font-lock-face-attributes
(append
font-lock-face-attributes
(list '(font-latex-bold-face nil nil t nil nil)
'(font-latex-italic-face nil nil nil t nil)
'(font-latex-math-face nil nil nil nil t)
'(font-latex-sedate-face nil nil nil t nil)
(list
'font-latex-warning-face
(cdr (assq 'background-color (frame-parameters)))
(cdr (assq 'foreground-color (frame-parameters)))
nil nil nil)))))
((eq font-lock-background-mode 'light) ; light colour background
(setq font-lock-face-attributes
(append
font-lock-face-attributes
;;;FIXME: These won't follow font-lock-type-face's changes.
;;; Should I change to a (copy-face) scheme?
'((font-latex-bold-face "DarkOliveGreen" nil t nil nil)
(font-latex-italic-face "DarkOliveGreen" nil nil t nil)
(font-latex-math-face "SaddleBrown")
(font-latex-sedate-face "grey50")
(font-latex-warning-face "red" nil t nil nil)))))
(t ; dark colour background
(setq font-lock-face-attributes
(append
font-lock-face-attributes
'((font-latex-bold-face "OliveDrab" nil t nil nil)
(font-latex-italic-face "OliveDrab" nil nil t nil)
(font-latex-math-face "burlywood")
;; good are > LightSeaGreen, LightCoral, coral, orchid, orange
(font-latex-sedate-face "grey60")
(font-latex-warning-face "red" nil t nil nil))))))))
(t
;;; XEmacs19:
(make-face 'font-latex-string-face "Face to use for LaTeX string.")
(copy-face 'font-lock-string-face 'font-latex-string-face)
(make-face 'font-latex-bold-face "Face to use for LaTeX bolds.")
(copy-face 'font-lock-type-face 'font-latex-bold-face)
(make-face-bold 'font-latex-bold-face)
(make-face 'font-latex-italic-face "Face to use for LaTeX italics.")
(copy-face 'font-lock-type-face 'font-latex-italic-face)
(make-face-italic 'font-latex-italic-face)
(make-face 'font-latex-math-face "Face to use for LaTeX math.")
(make-face 'font-latex-sedate-face "Face to use for LaTeX minor keywords.")
(make-face 'font-latex-warning-face "Face to use for LaTeX major keywords.")
(make-face-bold 'font-latex-warning-face)
;; XEmacs uses a tag-list thingy to determine if we are using color
;; or mono (and I assume a dark background).
(set-face-foreground 'font-latex-math-face "green4" 'global nil 'append)
(set-face-foreground 'font-latex-sedate-face "grey50" 'global nil 'append)
(set-face-foreground 'font-latex-warning-face "red" 'global nil 'append)))
(defun font-latex-setup ()
"Setup this buffer for LaTeX font-lock. Usually called from a hook."
;; Trickery to make $$ fontification be in `font-latex-math-face' while
;; strings get whatever `font-lock-string-face' has been set to.
(cond
(font-latex-is-Emacs20
(make-local-variable 'font-lock-string-face)
(setq font-lock-string-face font-latex-math-face
font-latex-string-face (default-value 'font-lock-string-face))
;; Tell Font Lock about the support.
(make-local-variable 'font-lock-defaults)
;; Parentheses () disabled because they should not delimit fontification
;; in LaTeX text.
(setq font-lock-defaults
'((font-latex-keywords font-latex-keywords-1 font-latex-keywords-2)
nil nil ((?\( . ".") (?\) . ".") (?$ . "\"")) nil
(font-lock-comment-start-regexp . "%")
(font-lock-mark-block-function . mark-paragraph))))
((or font-latex-is-XEmacs19 font-latex-is-XEmacs20)
;; Cool patch from Christoph Wedler...
(let (instance)
(mapcar (function
(lambda (property)
(setq instance
(face-property-instance 'font-latex-math-face property
nil 0 t))
(if (numberp instance)
(setq instance
(face-property-instance 'default property nil 0)))
(or (numberp instance)
(set-face-property 'font-lock-string-face property
instance (current-buffer)))))
(built-in-face-specifiers))))
(t
(font-lock-make-faces)
(make-local-variable 'font-lock-string-face)
(setq font-lock-string-face font-latex-math-face
font-latex-string-face (default-value 'font-lock-string-face))
;; Tell Font Lock about the support.
(make-local-variable 'font-lock-defaults)
;; Parentheses () disabled because they should not delimit fontification
;; in LaTeX text.
(setq font-lock-defaults
'((font-latex-keywords font-latex-keywords-1 font-latex-keywords-2)
nil nil ((?\( . ".") (?\) . ".") (?$ . "\"")) nil
(font-lock-comment-start-regexp . "%")
(font-lock-mark-block-function . mark-paragraph))))))
(when (or font-latex-is-XEmacs19 font-latex-is-XEmacs20)
(put 'latex-mode 'font-lock-defaults
'((font-latex-keywords font-latex-keywords-1 font-latex-keywords-2)
nil nil ((?\( . ".") (?\) . ".") (?$ . "\"")) nil
(font-lock-comment-start-regexp . "%")
(font-lock-mark-block-function . mark-paragraph)))
(put 'latex-tex-mode 'font-lock-defaults 'latex-mode)
(put 'LaTex-tex-mode 'font-lock-defaults 'latex-mode)
(put 'LaTeX-mode 'font-lock-defaults 'latex-mode)
(put 'japanese-LaTeX-mode 'font-lock-defaults 'latex-mode)
(put 'LATeX-MoDe 'font-lock-defaults 'latex-mode)
(put 'lATEx-mODe 'font-lock-defaults 'latex-mode))
(defun font-latex-match-reference (limit)
(if font-latex-match-reference
(font-latex-match-command-outside-arguments font-latex-match-reference
;;; (eval-when-compile
;;; (concat "\\\\" "\\("
;;; (mapconcat 'identity
;;; '("[A-Za-z]*cite[A-Za-z]*" "label" "\\(page\\|v\\|eq\\)?ref"
;;; "index" "glossary" "\\(footnote\\(mark\\|text\\)?\\)")
;;; "\\|")
;;; "\\)\\>"))
limit nil nil)))
(defun font-latex-match-function (limit)
"Fontify things like \\documentclass{article}"
(if font-latex-match-function
(font-latex-match-command-outside-arguments font-latex-match-function
limit nil t)))
(defun font-latex-match-textual (limit)
"Fontify things like \\section{text}"
(if font-latex-match-textual
(font-latex-match-command-outside-arguments font-latex-match-textual
limit nil t)))
(defun font-latex-match-variable (limit)
"Fontify things like \\newcommand{stuff}"
(if font-latex-match-variable
(font-latex-match-command-outside-arguments font-latex-match-variable
limit t nil)))
;; font-latex-find-matching-close is a little helper function which
;; is used like scan-sexp. It skips over matching
;; pairs of '{' and '}'. As an added benefit, it ignores any characters
;; which occur after the tex comment character %.
(defun font-latex-find-matching-close (closechar)
"*Skip over matching pairs of '{' and '}', ignoring
any characters in comments, until closechar is found. If the end of file
is reached, return nil."
(save-excursion
(save-match-data
(let ((mycount 1))
(while (and (> mycount 0)
(progn
(backward-char 1)
(re-search-forward
(concat "[^\\\\]["
;; closechar might be ]
;; and therefor must be first in regexp
(char-to-string closechar)
"{}%]")
nil t)))
(if (= (preceding-char) ?%) ;; Found a comment
(forward-line 1)
(setq mycount (if (= (preceding-char) ?{)
(+ mycount 1)
(- mycount 1)))))
(if (= mycount 0)
(point)
(error ""))))))
;; FIXME: --About font-latex-commented-outp--
;; Fontification is *slower* for affected functions (in particular
;; font-latex-match-function), so it will be worth it to increase
;; performance in the algorithm.
;; - don't return (store-match-data (list nil nil)) in
;; font-latex-match-command-outside-arguments, instead skip over
;; commented-out parts internally.
;; - Perhaps handling outlined code is excessive and slows down the
;; search too much?
;; - Is save-match-data expensive? The calling function could store
;; the match-data before it calls (font-latex-commented-outp) knowing
;; that is would trash the list.
(defun font-latex-commented-outp ()
"Return t is comment character is found between bol and point."
(save-excursion
(let ((limit (point)))
(save-match-data
;; Handle outlined code
(re-search-backward "^\\|\C-m" (point-min) t)
(if (re-search-forward "^%\\|[^\\]%" limit t)
t
nil)))))
(defvar font-latex-match-command-cache-start nil
"Cache start of unterminated match to fontify")
(defvar font-latex-match-command-cache-end nil
"Cache end of unterminated match to fontify")
(defvar font-latex-match-command-cache-limit nil
"Cache limit of unterminated match to fontify")
(defvar font-latex-match-command-cache-keywords nil
"Cache keywords of unterminated match to fontify")
(defvar font-latex-match-command-cache-match nil
"Cache last match of unterminated match")
(defvar font-latex-match-command-cache-stop nil
"Flag to not move point, because same pattern was returned twice to fontify")
(make-variable-buffer-local 'font-latex-match-command-cache-start)
(make-variable-buffer-local 'font-latex-match-command-cache-end)
(make-variable-buffer-local 'font-latex-match-command-cache-limit)
(make-variable-buffer-local 'font-latex-match-command-cache-keywords)
(make-variable-buffer-local 'font-latex-match-command-cache-match)
(make-variable-buffer-local 'font-latex-match-command-cache-stop)
;; FIXME - Note to myself
;; In call to font-latex-match-command-outside-arguments, I could arrange
;; such that keywords which cannot use [options] have this set to nil.
;; LaTeX code woulldn't fontify if options are used illegally in commands,
;; cuing users in that they are doing something wrong. (See RCS V1.11 for
;; useopt option)
;;
;; NOTE - Without an override flag, font-lock does not re-fontify the
;; option `opt' when the `t' is typed-in in "\cite[opt". The first `o'
;; was fontified and now has a face, which font-lock-apply-highlight
;; won't override. The `p' and `t' get a face as they are typed by
;; inheriting from left-stickyness on the `o'.
;; THEREFORE, I cannot rely on font-lock-apply-highlight to continue
;; multi-line incomplete patterns, because the first character of the
;; pattern on the first line has a face. I must use `prepend'.
(defun font-latex-match-command-outside-arguments (keywords limit twoargs
asterix)
"Search for regexp command KEYWORDS[opt]{arg} before LIMIT.
If TWOARG is t, allow two arguments {arg1}{arg2}
If ASTERIX is t, fontify trailing asterix in command.
Sets `match-data' so that:
subexpression 0 is the keyword,
subexpression 1 is the contents of any following [...] forms
subexpression 2 is the contents of any following {...} forms.
Returns nil if none of KEYWORDS is found."
(when (and font-latex-match-command-cache-keywords
font-latex-match-command-cache-limit
font-latex-match-command-cache-start
font-latex-match-command-cache-end
(equal font-latex-match-command-cache-keywords keywords)
(< font-latex-match-command-cache-start (point))
(not (= font-latex-match-command-cache-end (point)))
(> font-latex-match-command-cache-limit (point))
(not font-latex-match-command-cache-stop))
(goto-char font-latex-match-command-cache-start))
(setq font-latex-match-command-cache-stop nil)
(when (re-search-forward keywords limit t)
(cond
((font-latex-commented-outp)
;; Return a nul match such that we skip over this pattern.
;; (Would be better to skip over internally to this function)
(store-match-data (list nil nil))
t)
(t
(let ((kbeg (match-beginning 0))
kend sbeg send cbeg cend
cache-reset
(parse-sexp-ignore-comments t)) ; scan-sexps ignores comments
(goto-char (match-end 0))
(if (and asterix (eq (following-char) ?\*))
(forward-char 1))
(skip-chars-forward " \n\t" limit)
(setq kend (point))
(while (eq (following-char) ?\[)
(setq sbeg kend)
(save-restriction
;; Restrict to LIMIT.
(narrow-to-region (point-min) limit)
(if (condition-case nil
(goto-char (or (scan-sexps (point) 1)
;;;(font-latex-find-matching-close ?\])
(point-max)))
(error))
(setq send (point))
(setq cache-reset t)
(setq send (point-max))
(goto-char send))))
(skip-chars-forward " \n\t" limit)
(when (eq (following-char) ?\{)
(setq cbeg (point))
(save-restriction
;; Restrict to LIMIT.
(narrow-to-region (point-min) limit)
(if (condition-case nil
(goto-char (or (scan-sexps (point) 1) (point-max)))
(error))
(setq cend (point))
(setq cache-reset t)
(setq cend (point-max))
(goto-char cend)))
(when twoargs
(skip-chars-forward " \n\t" limit)
(when (eq (following-char) ?\{)
(save-restriction
;; Restrict to LIMIT.
(narrow-to-region (point-min) limit)
(if (condition-case nil
(goto-char (or (scan-sexps (point) 1) (point-max)))
(error))
(setq cend (point))
(setq cache-reset t)
(setq cend (point-max))
(goto-char cend))))))
(store-match-data (list kbeg kend sbeg send cbeg cend))
(when (and font-latex-match-command-cache-keywords ;Sanity check!
(equal font-latex-match-command-cache-keywords keywords)
font-latex-match-command-cache-match
(equal font-latex-match-command-cache-match
(list kbeg kend sbeg send cbeg cend)))
(setq font-latex-match-command-cache-stop t))
(setq font-latex-match-command-cache-match
(list kbeg kend sbeg send cbeg cend))
(when cache-reset
(setq font-latex-match-command-cache-start kbeg
font-latex-match-command-cache-end kend
font-latex-match-command-cache-limit (point)
font-latex-match-command-cache-keywords keywords))
t)))))
(defvar font-latex-match-font-cache-start nil
"Cache start of unterminated match to fontify")
(defvar font-latex-match-font-cache-end nil
"Cache end of unterminated match to fontify")
(defvar font-latex-match-font-cache-limit nil
"Cache limit of unterminated match to fontify")
(make-variable-buffer-local 'font-latex-match-font-cache-start)
(make-variable-buffer-local 'font-latex-match-font-cache-end)
(make-variable-buffer-local 'font-latex-match-font-cache-limit)
(defun font-latex-match-font-outside-braces (limit)
"Search for font-changing command like \textbf{fubar} before LIMIT.
Sets `match-data' so that:
subexpression 0 is the keyword,
subexpression 1 is the content to fontify in italic.
subexpression 2 is the content to fontify in bold.
subexpression 3 is the content to fontify in type-face.
Returns nil if no font-changing command is found."
(when (and font-latex-match-font-cache-limit
font-latex-match-font-cache-start
font-latex-match-font-cache-end
(not (= font-latex-match-font-cache-end (point)))
(> font-latex-match-font-cache-limit (point))
(< font-latex-match-font-cache-start (point)))
(goto-char font-latex-match-font-cache-start))
(when (re-search-forward
(eval-when-compile
(concat "\\\\" "\\("
"\\(emph\\)\\|" ;;; 2 - italic
"\\(text\\("
"\\(it\\|sl\\)\\|" ;;; 5 - italic
"\\(md\\|rm\\|sf\\|tt\\)\\|" ;;; 6 - type
"\\(bf\\|sc\\|up\\)" ;;; 7 - bold
"\\)\\)\\|"
"\\(boldsymbol\\|pmb\\)" ;;; 8 - bold
"\\)" "{"))
limit t)
(cond
((font-latex-commented-outp)
;; Return a nul match such that we skip over this pattern.
;; (Would be better to skip over internally to this function)
;; Using `prepend' won't help here, because the problem is that
;; scan-sexp *fails* to find a commented-out matching bracket!
(store-match-data (list nil nil))
t)
(t
(let ((kbeg (match-beginning 0)) (kend (match-end 1))
(beg (match-end 0))
end itbeg itend bfbeg bfend ttbeg ttend
(parse-sexp-ignore-comments t)) ; scan-sexps ignores comments
(goto-char kend)
(save-restriction
;; Restrict to LIMIT.
(narrow-to-region (point-min) limit)
(cond
((condition-case nil
(goto-char (or (scan-sexps (point) 1)
;;;(font-latex-find-matching-close ?\})
(point-max)))
(error))
(setq font-latex-match-font-cache-start nil
end (1- (point))))
(t
(setq end (point-max))
(goto-char end)
(setq font-latex-match-font-cache-start kbeg
font-latex-match-font-cache-end kend
font-latex-match-font-cache-limit (point)))))
(cond ((or (match-beginning 2) (match-beginning 5))
(setq itbeg beg itend end))
((match-beginning 6)
(setq ttbeg beg ttend end))
(t
(setq bfbeg beg bfend end)))
(store-match-data
(list kbeg kend itbeg itend bfbeg bfend ttbeg ttend))
;; Start the subsequent search immediately after this keyword.
(goto-char kend)
t)))))
(defvar font-latex-match-infont-cache-start nil
"Cache start of unterminated match to fontify")
(defvar font-latex-match-infont-cache-end nil
"Cache end of unterminated match to fontify")
(defvar font-latex-match-infont-cache-limit nil
"Cache end of unterminated match to fontify")
(make-variable-buffer-local 'font-latex-match-infont-cache-start)
(make-variable-buffer-local 'font-latex-match-infont-cache-end)
(make-variable-buffer-local 'font-latex-match-infont-cache-limit)
(defun font-latex-match-font-inside-braces (limit)
"Search for font-changing command like {\bf fubar} before LIMIT.
Sets `match-data' so that:
subexpression 0 is the keyword.
subexpression 1 is the content to fontify in italic.
subexpression 2 is the content to fontify in bold.
subexpression 3 is the content to fontify in type-face.
Returns nil if no font-changing command is found."
(when (and font-latex-match-infont-cache-limit
font-latex-match-infont-cache-start
font-latex-match-infont-cache-end
(not (= font-latex-match-infont-cache-end (point)))
(> font-latex-match-infont-cache-limit (point))
(< font-latex-match-infont-cache-start (point)))
(goto-char font-latex-match-infont-cache-start))
(when (re-search-forward
(eval-when-compile
(concat "\\\\" "\\("
;;; 2 - italic
"\\(em\\|it\\(shape\\)?\\|sl\\(shape\\)?\\)\\|"
;;; 5 - bold
"\\(bf\\(series\\)?\\|upshape\\|sc\\(shape\\)?\\)\\|"
"mdseries\\|tt\\(family\\)?\\|"
"sf\\(family\\)?\\|rm\\(family\\)?\\|"
"tiny\\|scriptsize\\|footnotesize\\|"
"small\\|normalsize\\|large\\|Large\\|LARGE\\|huge\\|Huge"
"\\)\\>[ \t]*"))
limit t)
(cond
((font-latex-commented-outp)
;; Return a nul match such that we skip over this pattern.
;; (Would be better to skip over internally to this function)
;; Using `prepend' won't help here, because the problem is that
;; scan-sexp *fails* to find a commented-out matching bracket!
(store-match-data (list nil nil))
t)
(t
(let ((kbeg (match-beginning 0)) (kend (match-end 1))
(beg (match-end 0))
end itbeg itend bfbeg bfend ttbeg ttend
(parse-sexp-ignore-comments t)) ; scan-sexps ignores comments
(goto-char kbeg)
(cond
((not (eq (preceding-char) ?\{))
;; Fontify only the keyword as bf/it/type (no argument found).
(cond ((match-beginning 2) (setq itbeg kbeg itend kend))
((match-beginning 5) (setq bfbeg kbeg bfend kend))
(t (setq ttbeg kbeg ttend kend)))
(goto-char (match-end 0))
(store-match-data
(list nil nil itbeg itend bfbeg bfend ttbeg ttend))
t)
(t
;; There's an opening bracket
(save-restriction
;; Restrict to LIMIT.
(narrow-to-region (point-min) limit)
(forward-char -1) ;Move on the opening bracket
(cond
((condition-case nil
(goto-char (or (scan-sexps (point) 1) (point-max)))
(error))
(setq font-latex-match-infont-cache-start nil
end (1- (point))))
(t ;error!
(setq end (point-max))
(goto-char end)
(setq font-latex-match-infont-cache-start kbeg
font-latex-match-infont-cache-end kend
font-latex-match-infont-cache-limit (point))))
(cond ((match-beginning 2) (setq itbeg beg itend end))
((match-beginning 5) (setq bfbeg beg bfend end))
(t (setq ttbeg beg ttend end)))
(store-match-data
(list kbeg kend itbeg itend bfbeg bfend ttbeg ttend))
;; Start the subsequent search immediately after this keyword.
(goto-char kend)
t))))))))
;;; FIXME: Add caches for math-env, math-envII and quotations.
(defun font-latex-match-math-env (limit)
"Used for patterns like:
\\( F = ma \\)
\\ [ F = ma \\] but not \\\\ [len]"
(when (re-search-forward "\\(\\\\(\\)\\|\\(\\\\\\[\\)" limit t)
(goto-char (match-beginning 0))
(if (eq (preceding-char) ?\\) ; \\[ is not a math environment
(progn
(goto-char (match-end 0))
(store-match-data (list nil nil))
t)
(let ((b1start (point)))
(search-forward (cond ((match-beginning 1) "\\)")
(t "\\]"))
limit 'move)
(let ((b2end (or (match-end 0) (point))))
(store-match-data (list b1start b2end))
t)))))
(defun font-latex-match-math-envII (limit)
"Used for patterns like:
\\begin{equation}
fontified stuff
\\end{equation}
The \\begin{equation} and \\end{equation are not fontified here."
(when (re-search-forward
(eval-when-compile
(concat "\\\\begin{\\(\\(display\\)?math\\|equation\\|eqnarray"
"\\|gather\\|multline\\|align\\|x*alignat"
"\\)\\*?}"))
limit t)
(let ((beg (match-end 0)) end)
(if (search-forward (concat "\\end{" (buffer-substring
(match-beginning 1)(match-end 0)))
limit 'move)
(setq end (match-beginning 0))
(setq end (point)))
(store-match-data (list beg end))
t)))
(defun font-latex-match-quotation (limit)
"Used for patterns like:
``this is a normal quote'' and these are multilingual quoted strings:
\"< french \"> and \"`german\"' quotes, << french >> and 8-bit french."
(when (re-search-forward
(eval-when-compile
(concat "\\(``\\)\\|\\(\"<\\)\\|\\(\"`\\)\\|\\(<<\\)\\|"
"\\(" (char-to-string 171) "\\)")) ; An 8-bit "<<"
limit t)
(let ((beg (match-beginning 0)))
(search-forward
(cond ((match-beginning 1) "''")
((match-beginning 2) "\">")
((match-beginning 3) "\"'")
((match-beginning 4) ">>")
((match-beginning 5) (eval-when-compile (char-to-string 187))))
limit 'move)
(store-match-data (list beg (point)))
t)))
;; Install ourselves
(add-hook 'LaTeX-mode-hook 'font-latex-setup)
(add-hook 'latex-mode-hook 'font-latex-setup)
;; If font-latex is loaded using a latex-mode-hook, then the add-hook above
;; won't be called this time around. Check for this now:
(if (eq major-mode 'latex-mode)
(font-latex-setup))
;; Provide ourselves:
(provide 'font-latex)
;;; font-latex.el ends here
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