-;;; latexenc.el --- guess correct coding system in LaTeX files
+;;; latexenc.el --- guess correct coding system in LaTeX files -*-coding: iso-2022-7bit -*-
-;; Copyright (C) 2005 Free Software Foundation, Inc.
+;; Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Arne J
\e,Ax
\e(Brgensen <arne@arnested.dk>
;; Keywords: mule, coding system, latex
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs 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.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; like this
;; (add-to-list 'file-coding-system-alist
-;; '("\\.tex\\|\\.ltx\\|\\.dtx\\|\\.drv\\'" . latexenc-find-file-coding-system))
+;; '("\\.\\(tex\\|ltx\\|dtx\\|drv\\)\\'" . latexenc-find-file-coding-system))
;;; Code:
("cp437" . cp437) ; IBM code page 437: 225 is \beta
("cp850" . cp850) ; IBM code page 850
("cp852" . cp852) ; IBM code page 852
- ;; ("cp858" . undecided) ; IBM code page 850 but with a euro symbol
+ ("cp858" . cp858) ; IBM code page 850 but with a euro symbol
("cp865" . cp865) ; IBM code page 865
;; The DECMultinational charaterset used by the OpenVMS system
;; ("decmulti" . undecided)
("next" . next) ; The Next encoding
("utf8" . utf-8)
("utf8x" . utf-8)) ; used by the Unicode LaTeX package
- "Mapping from encoding names used by LaTeX's \"inputenc.sty\" to Emacs coding systems.
+ "Mapping from LaTeX encodings in \"inputenc.sty\" to Emacs coding systems.
+LaTeX encodings are specified with \"\\usepackage[encoding]{inputenc}\".
Used by the function `latexenc-find-file-coding-system'."
:group 'files
:group 'mule
(throw 'cs t)
(goto-char (match-end 0))))))
(let* ((match (match-string 1))
- (sym (intern match)))
- (when (latexenc-inputenc-to-coding-system match)
- (setq sym (latexenc-inputenc-to-coding-system match)))
- (when (coding-system-p sym)
- sym
- (if (and (require 'code-pages nil t) (coding-system-p sym))
- sym
- 'undecided)))
+ (sym (or (latexenc-inputenc-to-coding-system match)
+ (intern match))))
+ (cond
+ ((coding-system-p sym) sym)
+ ((and (require 'code-pages nil t) (coding-system-p sym)) sym)
+ (t 'undecided)))
;; else try to find it in the master/main file
- (let (latexenc-main-file)
- ;; is there a TeX-master or tex-main-file in the local variable section
+
+ ;; Fixme: If the current file is in an archive (e.g. tar,
+ ;; zip), we should find the master file in that archive.
+ ;; But, that is not yet implemented. -- K.Handa
+ (let ((default-directory (if (stringp (nth 1 arg-list))
+ (file-name-directory (nth 1 arg-list))
+ default-directory))
+ latexenc-main-file)
+ ;; Is there a TeX-master or tex-main-file in the local variables
+ ;; section?
(unless latexenc-dont-use-TeX-master-flag
(goto-char (point-max))
- (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move)
+ (search-backward "\n\^L" (max (- (point-max) 3000) (point-min))
+ 'move)
(search-forward "Local Variables:" nil t)
- (when (re-search-forward "^%+ *\\(TeX-master\\|tex-main-file\\): *\"\\(.+\\)\"" nil t)
- (let ((file (concat (file-name-directory (nth 1 arg-list)) (match-string 2))))
- (if (file-exists-p file)
- (setq latexenc-main-file file)
- (if (boundp 'TeX-default-extension)
- (when (file-exists-p (concat file "." TeX-default-extension))
- (setq latexenc-main-file (concat file "." TeX-default-extension)))
- (dolist (ext '("drv" "dtx" "ltx" "tex"))
- (if (file-exists-p (concat file "." ext))
- (setq latexenc-main-file (concat file "." ext)))))))))
+ (when (re-search-forward
+ "^%+ *\\(TeX-master\\|tex-main-file\\): *\"\\(.+\\)\""
+ nil t)
+ (let ((file (match-string 2)))
+ (dolist (ext `("" ,(if (boundp 'TeX-default-extension)
+ (concat "." TeX-default-extension)
+ "")
+ ".tex" ".ltx" ".dtx" ".drv"))
+ (if (and (null latexenc-main-file) ;Stop at first.
+ (file-exists-p (concat file ext)))
+ (setq latexenc-main-file (concat file ext)))))))
;; try tex-modes tex-guess-main-file
(when (and (not latexenc-dont-use-tex-guess-main-file-flag)
(not latexenc-main-file))
+ ;; Use a separate `when' so the byte-compiler sees the fboundp.
(when (fboundp 'tex-guess-main-file)
- (let ((tex-start-of-header "\\\\document\\(style\\|class\\)")
- (default-directory (file-name-directory (nth 1 arg-list))))
+ (let ((tex-start-of-header "\\\\document\\(style\\|class\\)"))
(setq latexenc-main-file (tex-guess-main-file)))))
;; if we found a master/main file get the coding system from it
(if (and latexenc-main-file
+ (file-regular-p latexenc-main-file)
(file-readable-p latexenc-main-file))
(let* ((latexenc-dont-use-tex-guess-main-file-flag t)
(latexenc-dont-use-TeX-master-flag t)
- (latexenc-main-buffer (find-file-noselect latexenc-main-file t)))
- (or (buffer-local-value 'coding-system-for-write latexenc-main-buffer)
- (buffer-local-value 'buffer-file-coding-system latexenc-main-buffer)))
+ (latexenc-main-buffer
+ (find-file-noselect latexenc-main-file t)))
+ (coding-system-base ;Disregard the EOL part of the CS.
+ (with-current-buffer latexenc-main-buffer
+ (or coding-system-for-write buffer-file-coding-system
+ 'undecided))))
'undecided))))
'undecided))
HCoop / bpt / emacs.git / blobdiff