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author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/iso-tex/iso-tex.el |
Initial commit
Diffstat (limited to 'support/iso-tex/iso-tex.el')
-rw-r--r-- | support/iso-tex/iso-tex.el | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/support/iso-tex/iso-tex.el b/support/iso-tex/iso-tex.el new file mode 100644 index 0000000000..1ee4d54d99 --- /dev/null +++ b/support/iso-tex/iso-tex.el @@ -0,0 +1,496 @@ +;;; iso-tex.el --- Translating TeX to ISO-8859/1 while editing a file +;;***************************************************************************** +;; $Id: iso-tex.el,v 1.21 1997/05/15 08:15:12 gerd Exp gerd $ +;;***************************************************************************** +;; +;; Description: +;; When using (La)TeX it is highly desirable to display national +;; characters contained in the ISO-8859/1 character set. Editing +;; files with ISO-8859/1 characters is enabled in GNU Emacs since +;; version 19. +;; +;; Two ways can be envisaged. The first one is to teach TeX the +;; meaning of the extended character set (e.g. via a sty file in +;; LaTeX). This solution has the disadvantage that it may collide +;; with other extended character sets. +;; +;; The second solution is used in iso-tex.el. The extended +;; character set is used only temporarily during editing of a +;; file in Emacs. The file processed by TeX contains pure ASCII +;; representations of the extended characters (if possible). +;; +;; iso-tex.el provides a minor mode which anchors itself in +;; various hooks to perform translations when reading or writing +;; files. +;; +;; No provisions are made to insert ISO-8859/1 characters since +;; other packages are availlable for this purpose. +;; +;; +;; Installation: +;; 1. Ensure that iso-tex.el is on the load-path. +;; 2. For efficiency it might be desirable to byte-compile +;; iso-tex.el. +;; 3. Put the following in your .emacs file or a similar place +;; where it is loaded when needed. +;; +;; (autoload 'iso-tex-minor-mode +;; "iso-tex" +;; "Translate TeX to ISO 8859/1 while visiting a file." +;; t) +;; +;; 4. Enable the iso-tex minor mode for the appropriate +;; files. This depends on the major mode you use for editing +;; (La)TeX files. For this purpose you can use the entry hook +;; of this mode. E.g. +;; +;; (setq TeX-mode-hook +;; (function (lambda () (interactive) +;; (iso-tex-minor-mode 1) +;; ; and other initializations +;; ; ... +;; ))) +;; +;; Alternatively tex-mode-hook, latex-mode-hook, or LaTeX-mode-hook +;; might be places to perform the initialization. +;; +;; For users of german.sty: +;; +;; Instead of the autoload command mentioned under point 3. use the +;; following initializations. They cause the german.sty umlaut +;; variants to be inserted. +;; +;; (load "iso-tex") +;; (define-iso-tex "Ä" "\"A" "\"A" ) ; german.sty +;; (define-iso-tex "Ë" "\"E" "\"E" ) ; german.sty +;; (define-iso-tex "Ï" "\"I" "\"I" ) ; german.sty +;; (define-iso-tex "Ö" "\"O" "\"O" ) ; german.sty +;; (define-iso-tex "Ü" "\"U" "\"U" ) ; german.sty +;; (define-iso-tex "ß" "\"s" "\\ss" "\\3" ) ; german.sty +;; (define-iso-tex "ä" "\"a" "\"a" ) ; german.sty +;; (define-iso-tex "ë" "\"e" "\\\"e" ) ; german.sty +;; (define-iso-tex "ï" "\"i" "\\\"\\i") ; german.sty +;; (define-iso-tex "ö" "\"o" "\\\"o" ) ; german.sty +;; (define-iso-tex "ü" "\"u" "\\\"u" ) ; german.sty +;; +;; +;; The same trick can be used to redefine any string +;; representation of the ISO characters. E.g. +;; +;; (define-iso-tex "µ" "\\MYmu " "\\MYmu" ) +;; +;; inserts the string "\MYmu" for µ. \MYmu can now be defined to +;; produce a µ in any environment. E.g. in LaTeX by +;; +;; \newcommand\MYmu{\mbox{\(\mu\)}} +;; +;; +;; Bugs and Problems: +;; - Some of the TeX sequences which are inserted by iso-tex are +;; not defined in plain (La)TeX. Don't use them or provide defs. +;; +;; - Some of the TeX sequences which are inserted by iso-tex are +;; only defined inside/outside math environments. Be careful! +;; +;; - There might be problems when saving a narrowed buffer. +;; - Point might not be restored properly. +;; +;; - There are quite a few ways to code accented characters in +;; TeX. Only some are captured in this program. +;; +;; - Writing of a region is not supported. There seems to be no +;; appropriate hook. +;; +;; +;; To do: +;; - iso-tex can be used for a wider range of translations when +;; reading and writing. Maybe it's worth extracting those +;; routines which are more general and make iso-tex a sample +;; instance of the general routines. +;; +;; +;; Changes: +;; - undefine-iso-tex function added to undo the effects of +;; define-iso-tex. +;; - allowing non-braced expansion. This is the new default. +;; set the variable iso-tex-extra-braces to t to get the old +;; behaviour. +;; If you are still running Emacs 18.* you might have to make +;; buffer-substring-no-properties an alias to buffer-substring. +;; +;; - using the macros from the textcomp package for the formerly +;; undefined characters. +;; - Understand more variants of combinations with \i. +;; +;; - solitary diaresis is now translated into a macro instead of pure +;; TeX code which may cause trouble. +;; +;; - enhanced patterns for recognition of accented characters in TeX +;; - german.sty (partially) supported +;; - minor bugs fixed to generate accented i. +;; +;; - after-save-hooks seems to be after-save-hook now. +;; +;; - german.sty support partially removed because it interfered e.g. +;; with BibTeX strings. +;; +;; - after-save-hooks and after-save-hook are both set. +;; +;; - Default TeX sequences changed to conform to BibTeX coding standart. +;; +;; +;; Author: +;; Gerd Neugebauer +;; Mainzer Str. 8 +;; 56321 Rhens (Germany) +;; +;; Net: gerd@informatik.uni-koblenz.de +;; gerd@imn.th-leipzig.de (old) +;; gerd@intellektik.informatik.th-darmstadt.de (ancient) +;; +;;***************************************************************************** +;; LCD Archive Entry: +;; iso-tex|Gerd Neugebauer|gerd@informatik.uni-koblenz.de| +;; Translating TeX to ISO-8859/1 while editing a file.| +;; $Date: 1997/05/15 08:15:12 $|$Revision: 1.21 $|| +;;***************************************************************************** +;; +;; Copyright (C) 1994-1996 Gerd Neugebauer +;; +;; iso-tex.el is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY. No author or distributor +;; accepts responsibility to anyone for the consequences of using it +;; or for whether it serves any particular purpose or works at all, +;; unless he says so in writing. Refer to the GNU General Public +;; License for full details. +;; +;; Everyone is granted permission to copy, modify and redistribute +;; iso-tex.el, but only under the conditions described in the +;; GNU General Public License. A copy of this license is +;; supposed to have been given to you along with GNU Emacs so you +;; can know your rights and responsibilities. It should be in a +;; file named COPYING. Among other things, the copyright notice +;; and this notice must be preserved on all copies. +;; + +;;;---------------------------------------------------------------------------- +;;; Variable definitions and initializations + +(defvar iso-tex-minor-mode nil + "Variable indicating when iso-tex-minor-mode is active.") + +(or (assq 'iso-tex-minor-mode minor-mode-alist) + (setq minor-mode-alist (cons '(iso-tex-minor-mode " ISO-TeX") + minor-mode-alist))) + +(defvar iso-tex-minor-mode-initialized nil + "Variable indicating if iso-tex-minor-mode is already initialized in this +buffer. This variable is buffer local.") + +(make-variable-buffer-local 'iso-tex-minor-mode-initialized) + +(defvar tex-2-iso-regex + (concat + "\\\\\\([\"'`^~]\\([a-zA-Z]\\({}\\)?\\|\\\\i[ \t]*\\|{\\\\i}\\|{}\\)" + "\\|c{[a-zA-Z]?}" + "\\|[a-zA-Z]+[ \t]*\\({}\\)?" + "\\)" + "\\|{\\(\\\\\\([\"'`^~]\\([a-zA-Z]\\|\\\\i\\|{\\\\i}\\)?\\({}\\)?" + "\\|c{[a-zA-Z]?}" + "\\|[a-zA-Z]+" + "\\)" + "\\|[!?]`" + "\\)}" + "\\|\"[a-zA-Z]" ; for german.sty + "\\|[!?]`" + ) + "Regular expression to pre-select substrings to be translated by tex-2-iso.") +(defvar iso-2-tex-regex "[€-ÿ]" + "Regular expression to pre-select substrings to be translated by iso-2-tex.") +(defvar iso-2-tex-alist nil + "Alist of CHAR.STRING pairs used by iso-2-tex.") +(defvar tex-2-iso-alist nil + "Alist of STRING.ISO-CHAR pairs used by tex-2-iso.") + +(defun define-iso-tex (char &optional string &rest names) + "Define a translation between ISO-8859/1 characters and TeX sequences. +CHAR is the ISO-8859/1 character code as a single letter string. +If STRING is non nil then it is used as representation of CHAR. +The optional remaining arguments are used to translate TeX sequences to +characters." + (if string (setq iso-2-tex-alist (cons + (cons (string-to-char char) string) + iso-2-tex-alist))) + (setq names (cons string names)) + (while names + (setq tex-2-iso-alist (cons (cons (car names) char) + tex-2-iso-alist)) + (setq names (cdr names)) + ) +) + +(defun undefine-iso-tex (char &optional string &rest names) + "Remove definitions from the translation tables. This reverses the effect of +define-iso-tex. + +CHAR is the ISO-8859/1 character code as a single letter string. +If STRING is non nil then it is used as representation of CHAR. +The optional remaining arguments are used to translate TeX sequences to +characters. + +If CHAR is NIL then only the translation from TeX to iso is disabled. +" + (let (al) + (and char + (setq al (assoc (string-to-char char) iso-2-tex-alist)) + (rplaca al nil)) + (setq names (cons string names)) + (while names + (and (setq al (assoc (car names) tex-2-iso-alist)) + (rplaca al nil)) + (setq names (cdr names)) + ) + ) +) + +(if (null iso-2-tex-alist) + (progn + (define-iso-tex "¡" "!`" ) + (define-iso-tex "¢" "\\textcent" ) ; from tc + (define-iso-tex "£" "\\pounds" ) + (define-iso-tex "¤" "\\textcurrency" ) ; from tc + (define-iso-tex "¥" "\\textyen" ) ; from tc + (define-iso-tex "¦" "\\textbrokenbar" ) ; from tc + (define-iso-tex "§" "\\S" ) + (define-iso-tex "¨" "\\texthighdiaeresis" ) ; from tc + (define-iso-tex "©" "\\copyright" ) + (define-iso-tex "ª" "\\textordfemenine" ) ; from tc + (define-iso-tex "«" "\\ll" ) ; math mode only + (define-iso-tex "¬" "\\neg" ) ; math mode only + (define-iso-tex "" "\\-" ) ; It's too hard to distinguish from - + (define-iso-tex "®" "\\textregistered" ) ; from tc + (define-iso-tex "¯" "\\textmacron" ) ; from tc + (define-iso-tex "°" "\\textdegree" ) ; from tc + (define-iso-tex "±" "\\pm" ) ; math mode only + (define-iso-tex "²" "\\texttwosuperior" ) ; from tc + (define-iso-tex "³" "\\textthreesuperior" ) ; from tc + (define-iso-tex "´" "\\'{}" "\\'" ) + (define-iso-tex "µ" "\\mu" ) ; math mode only + (define-iso-tex "¶" "\\P" ) + (define-iso-tex "·" "\\cdot" ) + (define-iso-tex "¸" "\\c{}" "\\c" ) + (define-iso-tex "¹" "\\textonesuperior" ) ; from tc + (define-iso-tex "º" "\\textordmasculine" ) ; usually undefined + (define-iso-tex "»" "\\gg" ) ; math mode only + (define-iso-tex "¼" "\\textonequater" ) ; from tc + (define-iso-tex "½" "\\textonehalf" ) ; from tc + (define-iso-tex "¾" "\\textthreequaters" ) ; from tc + (define-iso-tex "¿" "?`" ) + (define-iso-tex "À" "\\`A" ) + (define-iso-tex "Á" "\\'A" ) + (define-iso-tex "Â" "\\^A" ) + (define-iso-tex "Ã" "\\~A" ) + (define-iso-tex "Ä" "\\\"A" ) ; "\"A" german.sty + (define-iso-tex "Å" "\\AA" ) + (define-iso-tex "Æ" "\\AE" ) + (define-iso-tex "Ç" "\\c{C}" ) + (define-iso-tex "È" "\\`E" ) + (define-iso-tex "É" "\\'E" ) + (define-iso-tex "Ê" "\\^E" ) + (define-iso-tex "Ë" "\\\"E" ) ; "\"E" german.sty + (define-iso-tex "Ì" "\\`I" ) + (define-iso-tex "Í" "\\'I" ) + (define-iso-tex "Î" "\\^I" ) + (define-iso-tex "Ï" "\\\"I" ) ; "\"I" german.sty + (define-iso-tex "Ð" "\\Dstroke" ) ; usually undefined + (define-iso-tex "Ñ" "\\~N" ) + (define-iso-tex "Ò" "\\`O" ) + (define-iso-tex "Ó" "\\'O" ) + (define-iso-tex "Ô" "\\^O" ) + (define-iso-tex "Õ" "\\~O" ) + (define-iso-tex "Ö" "\\\"O" ) ; "\"O" german.sty + (define-iso-tex "×" "\\times" ) + (define-iso-tex "Ø" "\\O" ) + (define-iso-tex "Ù" "\\`U" ) + (define-iso-tex "Ú" "\\'U" ) + (define-iso-tex "Û" "\\^U" ) + (define-iso-tex "Ü" "\\\"U" ) ; "\"U" german.sty + (define-iso-tex "Ý" "\\'Y" ) + (define-iso-tex "Þ" "\\Thorn" ) ; usually undefined + (define-iso-tex "ß" "\\ss" "\\3" ) ; "\"s" german.sty + (define-iso-tex "à" "\\`a" ) + (define-iso-tex "á" "\\'a" ) + (define-iso-tex "â" "\\^a" ) + (define-iso-tex "ã" "\\~a" ) + (define-iso-tex "ä" "\\\"a" ) ; "\"a" german.sty + (define-iso-tex "å" "\\aa" ) + (define-iso-tex "æ" "\\ae" ) + (define-iso-tex "ç" "\\c{c}" ) + (define-iso-tex "è" "\\`e" ) + (define-iso-tex "é" "\\'e" ) + (define-iso-tex "ê" "\\^e" ) + (define-iso-tex "ë" "\\\"e" ) ; "\"e" german.sty + (define-iso-tex "ì" "\\`{\\i}" "\\`\\i" ) + (define-iso-tex "í" "\\'{\\i}" "\\'\\i" ) + (define-iso-tex "î" "\\^{\\i}" "\\^\\i" ) + (define-iso-tex "ï" "\\\"{\\i}" "\\\"\\i" ); "\"i" german.sty + (define-iso-tex "ð" "\\dstroke" ) ; usually undefined + (define-iso-tex "ñ" "\\~n" ) + (define-iso-tex "ò" "\\`o" ) + (define-iso-tex "ó" "\\'o" ) + (define-iso-tex "ô" "\\^o" ) + (define-iso-tex "õ" "\\~o" ) + (define-iso-tex "ö" "\\\"o" ) ; "\"o" german.sty + (define-iso-tex "÷" "\\div" ) + (define-iso-tex "ø" "\\o" ) + (define-iso-tex "ù" "\\`u" ) + (define-iso-tex "ú" "\\'u" ) + (define-iso-tex "û" "\\^u" ) + (define-iso-tex "ü" "\\\"u" ) ; "\"u" german.sty + (define-iso-tex "ý" "\\'y" ) + (define-iso-tex "þ" "\\thorn" ) ; usually undefined + (define-iso-tex "ÿ" "\\\"y" ) +)) + + +;;;---------------------------------------------------------------------------- +;;; Definition of the minor mode + +(defun iso-tex-minor-mode (&optional arg) + "Minor mode to translate TeX sequences into ISO 8859/1 characters while +visiting a file. +Provisions are made to translate them back when writing." + (interactive) + + (if (null iso-tex-minor-mode-initialized) + (progn + (setq iso-tex-minor-mode-initialized t) + (add-hook 'write-contents-hooks 'iso-tex-write) + ;; + (make-local-variable 'after-save-hook) + (add-hook 'after-save-hook 'iso-tex-after-write) + ;; There seem to be two versions of this hook around + ;; Horrible to use such undocumented features :-) + (make-local-variable 'after-save-hooks) + (add-hook 'after-save-hooks 'iso-tex-after-write) + ;; + (make-local-variable 'iso-tex-minor-mode) + ) + ) + (setq iso-tex-minor-mode + (if (null arg) (not iso-tex-minor-mode) + (> (prefix-numeric-value arg) 0))) + (if iso-tex-minor-mode (tex-2-iso) (iso-2-tex) ) +) + +(defun iso-tex-write () + "Function anchored in the local-write-file-hooks. It is not removed but +disabled with the iso-tex-minor-mode." + (if iso-tex-minor-mode (iso-2-tex)) +) + +(defun iso-tex-after-write () + "Function anchored in the after-save-hooks. It is not removed but +disabled with the iso-tex-minor-mode." + (if iso-tex-minor-mode (tex-2-iso)) +) + +(defvar iso-tex-extra-braces nil + "This variable indicates wether extra braces are needed around the strings +which are inserted by iso-2-tex. This variable is local in any buffer.") +(make-variable-buffer-local 'iso-tex-extra-braces) + + +(defun iso-2-tex () + "Translate ISO-8859/1 extended characters into TeX sequences. +The variable iso-2-tex-regex is used to preselect a character which is then +translated using the variable iso-2-tex-alist. +Use the function define-iso-tex instead of setting iso-2-tex-alist." + + (let ((buffer-read-only nil) + (state (buffer-modified-p))) + (save-excursion + (goto-char (point-min)) + (while (search-forward-regexp iso-2-tex-regex (point-max) t) + (let ((new (assq (string-to-char + (buffer-substring + (- (point) 1) + (point))) + iso-2-tex-alist))) + (if new + (progn (delete-backward-char 1) + (cond + (iso-tex-extra-braces (insert "{" (cdr new) "}")) + ((string-match "\\\\[a-zA-Z]+$" (cdr new)) + (insert (cdr new) "{}")) + (t (insert (cdr new)) ))) + ) + ) + ) + ) + (set-buffer-modified-p state) + ) + nil +) + +(defun tex-2-iso () + "Translate TeX sequences into ISO-8859/1 extended characters. +The variable tex-2-iso-regex is used to preselect a character which is then +translated using the variable tex-2-iso-alist. +Use the function define-iso-tex instead of setting tex-2-iso-alist." + + (let ((buffer-read-only nil) + (state (buffer-modified-p))) + (save-excursion + (goto-char (point-min)) + (while (search-forward-regexp tex-2-iso-regex (point-max) t) + (let ((hit (buffer-substring-no-properties (match-beginning 0) (match-end 0))) + (b (match-beginning 0)) + (e (match-end 0)) ) + ; Apply some simplifications + ; to reduce the numer of + ; entries in the alist + (cond + ( (string-match "^\\(\\\\['`^\"]\\({\\\\i}\\|\\\\i\\)\\({}\\|[ \t]+\\)\\)$" hit ) + (setq hit (substring hit (match-beginning 1) (match-end 1))) + ) + ( (string-match "^\\(\\\\[a-zA-Z0-9'`^\"]*\\)\\({}\\|[ \t]+\\)$" hit) + (setq hit (substring hit (match-beginning 1) (match-end 1))) + ) + ( (string-match "^{\\(.*\\)}$" hit ) + (setq hit (substring hit (match-beginning 1) (match-end 1))) + ) + ( (string-match "^\\(\\\\['`^\"]\\){\\(.\\)}$" hit ) + (setq hit (concat + (substring hit (match-beginning 1) (match-end 1)) + (substring hit (match-beginning 2) (match-end 2)))) + ) + ) + (setq hit (assoc hit tex-2-iso-alist)) + (if hit + (progn + (delete-region b e) + (insert (cdr hit)) + ) + ) + ) + ) + ) + (set-buffer-modified-p state) + ) + nil +) + + +; ¡¢£¤¥¦§ +; ¨©ª«¬®¯ +; °±²³´µ¶· +; ¸¹º»¼½¾¿ +; ÀÁÂÃÄÅÆÇ +; ÈÉÊËÌÍÎÏ +; ÐÑÒÓÔÕÖ× +; ØÙÚÛÜÝÞß +; àáâãäåæç +; èéêëìíîï +; ðñòóôõö÷ +; øùúûüýþÿ |