-;;; mailcap.el --- Functions for displaying MIME parts
-;; Copyright (C) 1998,99 Free Software Foundation, Inc.
+;;; mailcap.el --- MIME media types configuration
+
+;; Copyright (C) 1998-2016 Free Software Foundation, Inc.
;; Author: William M. Perry <wmperry@aventail.com>
;; Lars Magne Ingebrigtsen <larsi@gnus.org>
-;; Keywords: news, mail
+;; Keywords: news, mail, multimedia
;; 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
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
+;; Provides configuration of MIME media types from directly from Lisp
+;; and via the usual mailcap mechanism (RFC 1524). Deals with
+;; mime.types similarly.
+
;;; Code:
+(eval-when-compile (require 'cl))
+(autoload 'mail-header-parse-content-type "mail-parse")
+
+;; `mm-delete-duplicates' is an alias for `delete-dups' in Emacs 22.
+(defalias 'mailcap-delete-duplicates
+ (if (fboundp 'delete-dups)
+ 'delete-dups
+ (autoload 'mm-delete-duplicates "mm-util")
+ 'mm-delete-duplicates))
+
+;; `mailcap-replace-in-string' is an alias like `gnus-replace-in-string'.
(eval-and-compile
- (require 'cl))
-(require 'mail-parse)
+ (cond
+ ((fboundp 'replace-regexp-in-string)
+ (defun mailcap-replace-in-string (string regexp newtext &optional literal)
+ "Replace all matches for REGEXP with NEWTEXT in STRING.
+If LITERAL is non-nil, insert NEWTEXT literally. Return a new
+string containing the replacements.
+This is a compatibility function for different Emacsen."
+ (replace-regexp-in-string regexp newtext string nil literal)))
+ ((fboundp 'replace-in-string)
+ (defalias 'mailcap-replace-in-string 'replace-in-string))))
+
+(defgroup mailcap nil
+ "Definition of viewers for MIME types."
+ :version "21.1"
+ :group 'mime)
(defvar mailcap-parse-args-syntax-table
(let ((table (copy-syntax-table emacs-lisp-mode-syntax-table)))
(modify-syntax-entry ?{ "(" table)
(modify-syntax-entry ?} ")" table)
table)
- "A syntax table for parsing sgml attributes.")
+ "A syntax table for parsing SGML attributes.")
+
+(eval-and-compile
+ (when (featurep 'xemacs)
+ (condition-case nil
+ (require 'lpr)
+ (error nil))))
+(defvar mailcap-print-command
+ (mapconcat 'identity
+ (cons (if (boundp 'lpr-command)
+ lpr-command
+ "lpr")
+ (when (boundp 'lpr-switches)
+ (if (stringp lpr-switches)
+ (list lpr-switches)
+ lpr-switches)))
+ " ")
+ "Shell command (including switches) used to print PostScript files.")
+
+;; Postpone using defcustom for this as it's so big and we essentially
+;; have to have two copies of the data around then. Perhaps just
+;; customize the Lisp viewers and rely on the normal configuration
+;; files for the rest? -- fx
(defvar mailcap-mime-data
- '(("application"
+ `(("application"
+ ("vnd\\.ms-excel"
+ (viewer . "gnumeric %s")
+ (test . (getenv "DISPLAY"))
+ (type . "application/vnd.ms-excel"))
("x-x509-ca-cert"
(viewer . ssl-view-site-cert)
- (test . (fboundp 'ssl-view-site-cert))
(type . "application/x-x509-ca-cert"))
("x-x509-user-cert"
(viewer . ssl-view-user-cert)
- (test . (fboundp 'ssl-view-user-cert))
(type . "application/x-x509-user-cert"))
("octet-stream"
(viewer . mailcap-save-binary-file)
(non-viewer . t)
- (type ."application/octet-stream"))
- ("dvi"
- (viewer . "open %s")
- (type . "application/dvi")
- (test . (eq (mm-device-type) 'ns)))
+ (type . "application/octet-stream"))
("dvi"
- (viewer . "xdvi %s")
- (test . (eq (mm-device-type) 'x))
+ (viewer . "xdvi -safer %s")
+ (test . (eq window-system 'x))
("needsx11")
- (type . "application/dvi"))
+ (type . "application/dvi")
+ ("print" . "dvips -qRP %s"))
("dvi"
(viewer . "dvitty %s")
(test . (not (getenv "DISPLAY")))
- (type . "application/dvi"))
+ (type . "application/dvi")
+ ("print" . "dvips -qRP %s"))
("emacs-lisp"
(viewer . mailcap-maybe-eval)
(type . "application/emacs-lisp"))
+ ("x-emacs-lisp"
+ (viewer . mailcap-maybe-eval)
+ (type . "application/x-emacs-lisp"))
("x-tar"
(viewer . mailcap-save-binary-file)
(non-viewer . t)
(type . "application/x-tar"))
("x-latex"
(viewer . tex-mode)
- (test . (fboundp 'tex-mode))
(type . "application/x-latex"))
("x-tex"
(viewer . tex-mode)
- (test . (fboundp 'tex-mode))
(type . "application/x-tex"))
("latex"
(viewer . tex-mode)
- (test . (fboundp 'tex-mode))
(type . "application/latex"))
("tex"
(viewer . tex-mode)
- (test . (fboundp 'tex-mode))
(type . "application/tex"))
("texinfo"
(viewer . texinfo-mode)
- (test . (fboundp 'texinfo-mode))
(type . "application/tex"))
("zip"
(viewer . mailcap-save-binary-file)
(type . "application/zip")
("copiousoutput"))
("pdf"
- (viewer . "acroread %s")
- (type . "application/pdf"))
+ (viewer . pdf-view-mode)
+ (type . "application/pdf")
+ (test . (eq window-system 'x)))
+ ("pdf"
+ (viewer . doc-view-mode)
+ (type . "application/pdf")
+ (test . (eq window-system 'x)))
+ ("pdf"
+ (viewer . "gv -safer %s")
+ (type . "application/pdf")
+ (test . window-system)
+ ("print" . ,(concat "pdf2ps %s - | " mailcap-print-command)))
+ ("pdf"
+ (viewer . "gpdf %s")
+ (type . "application/pdf")
+ ("print" . ,(concat "pdftops %s - | " mailcap-print-command))
+ (test . (eq window-system 'x)))
+ ("pdf"
+ (viewer . "xpdf %s")
+ (type . "application/pdf")
+ ("print" . ,(concat "pdftops %s - | " mailcap-print-command))
+ (test . (eq window-system 'x)))
+ ("pdf"
+ (viewer . ,(concat "pdftotext %s -"))
+ (type . "application/pdf")
+ ("print" . ,(concat "pdftops %s - | " mailcap-print-command))
+ ("copiousoutput"))
("postscript"
- (viewer . "open %s")
- (type . "application/postscript")
- (test . (eq (mm-device-type) 'ns)))
+ (viewer . "gv -safer %s")
+ (type . "application/postscript")
+ (test . window-system)
+ ("print" . ,(concat mailcap-print-command " %s"))
+ ("needsx11"))
("postscript"
(viewer . "ghostview -dSAFER %s")
(type . "application/postscript")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
+ ("print" . ,(concat mailcap-print-command " %s"))
("needsx11"))
("postscript"
(viewer . "ps2ascii %s")
(type . "application/postscript")
(test . (not (getenv "DISPLAY")))
- ("copiousoutput")))
+ ("print" . ,(concat mailcap-print-command " %s"))
+ ("copiousoutput"))
+ ("sieve"
+ (viewer . sieve-mode)
+ (type . "application/sieve"))
+ ("pgp-keys"
+ (viewer . "gpg --import --interactive --verbose")
+ (type . "application/pgp-keys")
+ ("needsterminal")))
("audio"
("x-mpeg"
(viewer . "maplay %s")
(type . "audio/x-mpeg"))
- (".*"
- (viewer . mailcap-save-binary-file)
- (non-viewer . t)
- (test . (or (featurep 'nas-sound)
- (featurep 'native-sound)))
- (type . "audio/*"))
(".*"
(viewer . "showaudio")
(type . "audio/*")))
(type . "message/rfc822"))
("rfc-*822"
(viewer . vm-mode)
- (test . (fboundp 'vm-mode))
- (type . "message/rfc822"))
- ("rfc-*822"
- (viewer . w3-mode)
- (test . (fboundp 'w3-mode))
(type . "message/rfc822"))
("rfc-*822"
(viewer . view-mode)
- (test . (fboundp 'view-mode))
- (type . "message/rfc822"))
- ("rfc-*822"
- (viewer . fundamental-mode)
(type . "message/rfc822")))
("image"
("x-xwd"
(viewer . "xwud -in %s")
(type . "image/x-xwd")
("compose" . "xwd -frame > %s")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
("needsx11"))
("x11-dump"
(viewer . "xwud -in %s")
(type . "image/x-xwd")
("compose" . "xwd -frame > %s")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
("needsx11"))
("windowdump"
(viewer . "xwud -in %s")
(type . "image/x-xwd")
("compose" . "xwd -frame > %s")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
("needsx11"))
- (".*"
- (viewer . "aopen %s")
- (type . "image/*")
- (test . (eq (mm-device-type) 'ns)))
(".*"
(viewer . "display %s")
(type . "image/*")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
("needsx11"))
(".*"
(viewer . "ee %s")
(type . "image/*")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
("needsx11")))
("text"
- ("plain"
- (viewer . w3-mode)
- (test . (fboundp 'w3-mode))
- (type . "text/plain"))
("plain"
(viewer . view-mode)
- (test . (fboundp 'view-mode))
(type . "text/plain"))
("plain"
(viewer . fundamental-mode)
(type . "text/plain"))
("enriched"
- (viewer . enriched-decode-region)
- (test . (fboundp 'enriched-decode))
+ (viewer . enriched-decode)
(type . "text/enriched"))
- ("html"
- (viewer . mm-w3-prepare-buffer)
- (test . (fboundp 'w3-prepare-buffer))
- (type . "text/html")))
+ ("dns"
+ (viewer . dns-mode)
+ (type . "text/dns")))
("video"
("mpeg"
(viewer . "mpeg_play %s")
(type . "video/mpeg")
- (test . (eq (mm-device-type) 'x))
+ (test . (eq window-system 'x))
("needsx11")))
("x-world"
("x-vrml"
("archive"
("tar"
(viewer . tar-mode)
- (type . "archive/tar")
- (test . (fboundp 'tar-mode)))))
- "The mailcap structure is an assoc list of assoc lists.
+ (type . "archive/tar"))))
+ "The mailcap structure is an assoc list of assoc lists.
1st assoc list is keyed on the major content-type
2nd assoc list is keyed on the minor content-type (which can be a regexp)
(\"plain\" . <info>)))
Where <info> is another assoc list of the various information
-related to the mailcap RFC. This is keyed on the lowercase
+related to the mailcap RFC 1524. This is keyed on the lowercase
attribute name (viewer, test, etc). This looks like:
- ((viewer . viewerinfo)
- (test . testinfo)
- (xxxx . \"string\"))
+ ((viewer . VIEWERINFO)
+ (test . TESTINFO)
+ (xxxx . \"STRING\")
+ FLAG)
-Where viewerinfo specifies how the content-type is viewed. Can be
-a string, in which case it is run through a shell, with
-appropriate parameters, or a symbol, in which case the symbol is
-funcall'd, with the buffer as an argument.
+Where VIEWERINFO specifies how the content-type is viewed. Can be
+a string, in which case it is run through a shell, with appropriate
+parameters, or a symbol, in which case the symbol is `funcall'ed if
+and only if it exists as a function, with the buffer as an argument.
-testinfo is a list of strings, or nil. If nil, it means the
-viewer specified is always valid. If it is a list of strings,
-these are used to determine whether a viewer passes the 'test' or
-not.")
+TESTINFO is a test for the viewer's applicability, or nil. If nil, it
+means the viewer is always valid. If it is a Lisp function, it is
+called with a list of items from any extra fields from the
+Content-Type header as argument to return a boolean value for the
+validity. Otherwise, if it is a non-function Lisp symbol or list
+whose car is a symbol, it is `eval'led to yield the validity. If it
+is a string or list of strings, it represents a shell command to run
+to return a true or false shell value for the validity.")
+(put 'mailcap-mime-data 'risky-local-variable t)
-(defvar mailcap-download-directory nil
- "*Where downloaded files should go by default.")
+(defcustom mailcap-download-directory nil
+ "*Directory to which `mailcap-save-binary-file' downloads files by default.
+nil means your home directory."
+ :type '(choice (const :tag "Home directory" nil)
+ directory)
+ :group 'mailcap)
-(defvar mailcap-temporary-directory
- (cond ((fboundp 'temp-directory) (temp-directory))
- ((boundp 'temporary-file-directory) temporary-file-directory)
- ("/tmp/"))
- "*Where temporary files go.")
+(defvar mailcap-poor-system-types
+ '(ms-dos windows-nt)
+ "Systems that don't have a Unix-like directory hierarchy.")
;;;
;;; Utility functions
;;;
-(defun mailcap-generate-unique-filename (&optional fmt)
- "Generate a unique filename in mailcap-temporary-directory"
- (if (not fmt)
- (let ((base (format "mailcap-tmp.%d" (user-real-uid)))
- (fname "")
- (x 0))
- (setq fname (format "%s%d" base x))
- (while (file-exists-p
- (expand-file-name fname mailcap-temporary-directory))
- (setq x (1+ x)
- fname (concat base (int-to-string x))))
- (expand-file-name fname mailcap-temporary-directory))
- (let ((base (concat "mm" (int-to-string (user-real-uid))))
- (fname "")
- (x 0))
- (setq fname (format fmt (concat base (int-to-string x))))
- (while (file-exists-p
- (expand-file-name fname mailcap-temporary-directory))
- (setq x (1+ x)
- fname (format fmt (concat base (int-to-string x)))))
- (expand-file-name fname mailcap-temporary-directory))))
-
(defun mailcap-save-binary-file ()
(goto-char (point-min))
(unwind-protect
(write-region (point-min) (point-max) file))
(kill-buffer (current-buffer))))
+(defvar mailcap-maybe-eval-warning
+ "*** WARNING ***
+
+This MIME part contains untrusted and possibly harmful content.
+If you evaluate the Emacs Lisp code contained in it, a lot of nasty
+things can happen. Please examine the code very carefully before you
+instruct Emacs to evaluate it. You can browse the buffer containing
+the code using \\[scroll-other-window].
+
+If you are unsure what to do, please answer \"no\"."
+ "Text of warning message displayed by `mailcap-maybe-eval'.
+Make sure that this text consists only of few text lines. Otherwise,
+Gnus might fail to display all of it.")
+
(defun mailcap-maybe-eval ()
- "Maybe evaluate a buffer of emacs lisp code"
- (if (yes-or-no-p "This is emacs-lisp code, evaluate it? ")
- (eval-buffer (current-buffer))
- (emacs-lisp-mode)))
+ "Maybe evaluate a buffer of Emacs Lisp code."
+ (let ((lisp-buffer (current-buffer)))
+ (goto-char (point-min))
+ (when
+ (save-window-excursion
+ (delete-other-windows)
+ (let ((buffer (get-buffer-create (generate-new-buffer-name
+ "*Warning*"))))
+ (unwind-protect
+ (with-current-buffer buffer
+ (insert (substitute-command-keys
+ mailcap-maybe-eval-warning))
+ (goto-char (point-min))
+ (display-buffer buffer)
+ (yes-or-no-p "This is potentially dangerous emacs-lisp code, evaluate it? "))
+ (kill-buffer buffer))))
+ (eval-buffer (current-buffer)))
+ (when (buffer-live-p lisp-buffer)
+ (with-current-buffer lisp-buffer
+ (emacs-lisp-mode)))))
+
;;;
;;; The mailcap parser
(defvar mailcap-parsed-p nil)
(defun mailcap-parse-mailcaps (&optional path force)
- "Parse out all the mailcaps specified in a unix-style path string PATH.
-If FORCE, re-parse even if already parsed."
+ "Parse out all the mailcaps specified in a path string PATH.
+Components of PATH are separated by the `path-separator' character
+appropriate for this system. If FORCE, re-parse even if already
+parsed. If PATH is omitted, use the value of environment variable
+MAILCAPS if set; otherwise (on Unix) use the path from RFC 1524, plus
+/usr/local/etc/mailcap."
(interactive (list nil t))
(when (or (not mailcap-parsed-p)
force)
(cond
(path nil)
((getenv "MAILCAPS") (setq path (getenv "MAILCAPS")))
- ((memq system-type '(ms-dos ms-windows windows-nt))
- (setq path (mapconcat 'expand-file-name
- '("~/mail.cap" "~/etc/mail.cap" "~/.mailcap")
- ";")))
- (t (setq path (mapconcat 'expand-file-name
- '("~/.mailcap"
- "/etc/mailcap:/usr/etc/mailcap"
- "/usr/local/etc/mailcap") ":"))))
+ ((memq system-type mailcap-poor-system-types)
+ (setq path '("~/.mailcap" "~/mail.cap" "~/etc/mail.cap")))
+ (t (setq path
+ ;; This is per RFC 1524, specifically
+ ;; with /usr before /usr/local.
+ '("~/.mailcap" "/etc/mailcap" "/usr/etc/mailcap"
+ "/usr/local/etc/mailcap"))))
(let ((fnames (reverse
- (split-string
- path (if (memq system-type
- '(ms-dos ms-windows windows-nt))
- ";"
- ":"))))
+ (if (stringp path)
+ (split-string path path-separator t)
+ path)))
fname)
(while fnames
(setq fname (car fnames))
- (if (and (file-exists-p fname) (file-readable-p fname)
- (file-regular-p fname))
- (mailcap-parse-mailcap (car fnames)))
+ (if (and (file-readable-p fname)
+ (file-regular-p fname))
+ (mailcap-parse-mailcap fname))
(setq fnames (cdr fnames))))
- (setq mailcap-parsed-p t)))
+ (setq mailcap-parsed-p t)))
(defun mailcap-parse-mailcap (fname)
- ;; Parse out the mailcap file specified by FNAME
+ "Parse out the mailcap file specified by FNAME."
(let (major ; The major mime type (image/audio/etc)
minor ; The minor mime type (gif, basic, etc)
save-pos ; Misc saved positions used in parsing
(insert-file-contents fname)
(set-syntax-table mailcap-parse-args-syntax-table)
(mailcap-replace-regexp "#.*" "") ; Remove all comments
+ (mailcap-replace-regexp "\\\\[ \t]*\n" " ") ; And collapse spaces
(mailcap-replace-regexp "\n+" "\n") ; And blank lines
- (mailcap-replace-regexp "\\\\[ \t\n]+" " ") ; And collapse spaces
- (mailcap-replace-regexp (concat (regexp-quote "\\") "[ \t]*\n") "")
(goto-char (point-max))
(skip-chars-backward " \t\n")
(delete-region (point) (point-max))
- (goto-char (point-min))
- (while (not (eobp))
- (skip-chars-forward " \t\n")
+ (while (not (bobp))
+ (skip-chars-backward " \t\n")
+ (beginning-of-line)
(setq save-pos (point)
info nil)
- (skip-chars-forward "^/;")
+ (skip-chars-forward "^/; \t\n")
(downcase-region save-pos (point))
(setq major (buffer-substring save-pos (point)))
- (skip-chars-forward "/ \t\n")
- (setq save-pos (point))
- (skip-chars-forward "^;")
- (downcase-region save-pos (point))
- (setq minor
- (cond
- ((eq ?* (or (char-after save-pos) 0)) ".*")
- ((= (point) save-pos) ".*")
- (t (buffer-substring save-pos (point)))))
- (skip-chars-forward "; \t\n")
+ (skip-chars-forward " \t")
+ (setq minor "")
+ (when (eq (char-after) ?/)
+ (forward-char)
+ (skip-chars-forward " \t")
+ (setq save-pos (point))
+ (skip-chars-forward "^; \t\n")
+ (downcase-region save-pos (point))
+ (setq minor
+ (cond
+ ((eq ?* (or (char-after save-pos) 0)) ".*")
+ ((= (point) save-pos) ".*")
+ (t (regexp-quote (buffer-substring save-pos (point)))))))
+ (skip-chars-forward " \t")
;;; Got the major/minor chunks, now for the viewers/etc
;;; The first item _must_ be a viewer, according to the
- ;;; RFC for mailcap files (#1343)
- (skip-chars-forward "; \t\n")
- (setq save-pos (point))
- (skip-chars-forward "^;\n")
- (if (eq (or (char-after save-pos) 0) ?')
- (setq viewer (progn
- (narrow-to-region (1+ save-pos) (point))
- (goto-char (point-min))
- (prog1
- (read (current-buffer))
- (goto-char (point-max))
- (widen))))
- (setq viewer (buffer-substring save-pos (point))))
+ ;;; RFC for mailcap files (#1524)
+ (setq viewer "")
+ (when (eq (char-after) ?\;)
+ (forward-char)
+ (skip-chars-forward " \t")
+ (setq save-pos (point))
+ (skip-chars-forward "^;\n")
+ ;; skip \;
+ (while (eq (char-before) ?\\)
+ (backward-delete-char 1)
+ (forward-char)
+ (skip-chars-forward "^;\n"))
+ (if (eq (or (char-after save-pos) 0) ?')
+ (setq viewer (progn
+ (narrow-to-region (1+ save-pos) (point))
+ (goto-char (point-min))
+ (prog1
+ (read (current-buffer))
+ (goto-char (point-max))
+ (widen))))
+ (setq viewer (buffer-substring save-pos (point)))))
(setq save-pos (point))
(end-of-line)
- (setq info (nconc (list (cons 'viewer viewer)
- (cons 'type (concat major "/"
- (if (string= minor ".*")
- "*" minor))))
- (mailcap-parse-mailcap-extras save-pos (point))))
- (mailcap-mailcap-entry-passes-test info)
- (mailcap-add-mailcap-entry major minor info)))))
+ (unless (equal viewer "")
+ (setq info (nconc (list (cons 'viewer viewer)
+ (cons 'type (concat major "/"
+ (if (string= minor ".*")
+ "*" minor))))
+ (mailcap-parse-mailcap-extras save-pos (point))))
+ (mailcap-mailcap-entry-passes-test info)
+ (mailcap-add-mailcap-entry major minor info))
+ (beginning-of-line)))))
(defun mailcap-parse-mailcap-extras (st nd)
- ;; Grab all the extra stuff from a mailcap entry
+ "Grab all the extra stuff from a mailcap entry."
(let (
name ; From name=
value ; its value
(skip-chars-forward " \n\t;")
(while (not (eobp))
(setq done nil)
- (skip-chars-forward " \";\n\t")
(setq name-pos (point))
- (skip-chars-forward "^ \n\t=")
+ (skip-chars-forward "^ \n\t=;")
(downcase-region name-pos (point))
(setq name (buffer-substring name-pos (point)))
(skip-chars-forward " \t\n")
(if (not (eq (char-after (point)) ?=)) ; There is no value
- (setq value nil)
+ (setq value t)
(skip-chars-forward " \t\n=")
(setq val-pos (point))
(if (memq (char-after val-pos) '(?\" ?'))
(skip-chars-forward ";"))
(setq done t))))
(setq value (buffer-substring val-pos (point))))
- (setq results (cons (cons name value) results)))
+ ;; `test' as symbol, others like "copiousoutput" and "needsx11" as
+ ;; strings
+ (setq results (cons (cons (if (string-equal name "test")
+ 'test
+ name)
+ value) results))
+ (skip-chars-forward " \";\n\t"))
results)))
(defun mailcap-mailcap-entry-passes-test (info)
- ;; Return t iff a mailcap entry passes its test clause or no test
- ;; clause is present.
- (let (status ; Call-process-regions return value
- (test (assq 'test info)) ; The test clause
- )
+ "Replace the test clause of INFO itself with a boolean for some cases.
+This function supports only `test -n $DISPLAY' and `test -z $DISPLAY',
+replaces them with t or nil. As for others or if INFO has a interactive
+spec (needsterm, needsterminal, or needsx11) but DISPLAY is not set,
+the test clause will be unchanged."
+ (let ((test (assq 'test info)) ; The test clause
+ status)
(setq status (and test (split-string (cdr test) " ")))
(if (and (or (assoc "needsterm" info)
+ (assoc "needsterminal" info)
(assoc "needsx11" info))
(not (getenv "DISPLAY")))
(setq status nil)
;;;
(defun mailcap-possible-viewers (major minor)
- ;; Return a list of possible viewers from MAJOR for minor type MINOR
+ "Return a list of possible viewers from MAJOR for minor type MINOR."
(let ((exact '())
(wildcard '()))
(while major
(cond
((equal (car (car major)) minor)
(setq exact (cons (cdr (car major)) exact)))
- ((and minor (string-match (car (car major)) minor))
+ ((and minor (string-match (concat "^" (car (car major)) "$") minor))
(setq wildcard (cons (cdr (car major)) wildcard))))
(setq major (cdr major)))
- (nconc (nreverse exact) (nreverse wildcard))))
+ (nconc exact wildcard)))
(defun mailcap-unescape-mime-test (test type-info)
(let (save-pos save-chr subst)
(setq save-pos (point))
(skip-chars-forward "%")
(setq save-chr (char-after (point)))
+ ;; Escapes:
+ ;; %s: name of a file for the body data
+ ;; %t: content-type
+ ;; %{<parameter name}: value of parameter in mailcap entry
+ ;; %n: number of sub-parts for multipart content-type
+ ;; %F: a set of content-type/filename pairs for multiparts
(cond
((null save-chr) nil)
((= save-chr ?t)
(delete-region save-pos (progn (forward-char 1) (point)))
(insert (or (cdr (assq 'type type-info)) "\"\"")))
- ((= save-chr ?M)
- (delete-region save-pos (progn (forward-char 1) (point)))
- (insert "\"\""))
- ((= save-chr ?n)
- (delete-region save-pos (progn (forward-char 1) (point)))
- (insert "\"\""))
- ((= save-chr ?F)
+ ((memq save-chr '(?M ?n ?F))
(delete-region save-pos (progn (forward-char 1) (point)))
(insert "\"\""))
((= save-chr ?{)
(insert (or (cdr (assoc subst type-info)) "\"\"")))
(t nil))))
(buffer-string)))
- (t (error "Bad value to mailcap-unescape-mime-test. %s" test)))))
+ (t (error "Bad value to mailcap-unescape-mime-test: %s" test)))))
(defvar mailcap-viewer-test-cache nil)
(defun mailcap-viewer-passes-test (viewer-info type-info)
- ;; Return non-nil iff the viewer specified by VIEWER-INFO passes its
- ;; test clause (if any).
+ "Return non-nil if viewer specified by VIEWER-INFO passes its test clause.
+Also return non-nil if it has no test clause. TYPE-INFO is an argument
+to supply to the test."
(let* ((test-info (assq 'test viewer-info))
(test (cdr test-info))
(otest test)
- (viewer (cdr (assoc 'viewer viewer-info)))
+ (viewer (cdr (assq 'viewer viewer-info)))
(default-directory (expand-file-name "~/"))
- status parsed-test cache result)
- (if (setq cache (assoc test mailcap-viewer-test-cache))
- (cadr cache)
- (setq
- result
- (cond
- ((not test-info) t) ; No test clause
- ((not test) nil) ; Already failed test
- ((eq test t) t) ; Already passed test
- ((and (symbolp test) ; Lisp function as test
- (fboundp test))
- (funcall test type-info))
- ((and (symbolp test) ; Lisp variable as test
- (boundp test))
- (symbol-value test))
- ((and (listp test) ; List to be eval'd
- (symbolp (car test)))
- (eval test))
- (t
- (setq test (mailcap-unescape-mime-test test type-info)
- test (list shell-file-name nil nil nil
- shell-command-switch test)
- status (apply 'call-process test))
- (= 0 status))))
- (push (list otest result) mailcap-viewer-test-cache)
- result)))
+ status cache result)
+ (cond ((not (or (stringp viewer) (fboundp viewer)))
+ nil) ; Non-existent Lisp function
+ ((setq cache (assoc test mailcap-viewer-test-cache))
+ (cadr cache))
+ ((not test-info) t) ; No test clause
+ (t
+ (setq
+ result
+ (cond
+ ((not test) nil) ; Already failed test
+ ((eq test t) t) ; Already passed test
+ ((functionp test) ; Lisp function as test
+ (funcall test type-info))
+ ((and (symbolp test) ; Lisp variable as test
+ (boundp test))
+ (symbol-value test))
+ ((and (listp test) ; List to be eval'd
+ (symbolp (car test)))
+ (eval test))
+ (t
+ (setq test (mailcap-unescape-mime-test test type-info)
+ test (list shell-file-name nil nil nil
+ shell-command-switch test)
+ status (apply 'call-process test))
+ (eq 0 status))))
+ (push (list otest result) mailcap-viewer-test-cache)
+ result))))
(defun mailcap-add-mailcap-entry (major minor info)
(let ((old-major (assoc major mailcap-mime-data)))
((or (null cur-minor) ; New minor area, or
(assq 'test info)) ; Has a test, insert at beginning
(setcdr old-major (cons (cons minor info) (cdr old-major))))
- ((and (not (assq 'test info)) ; No test info, replace completely
- (not (assq 'test cur-minor)))
+ ((and (not (assq 'test info)) ; No test info, replace completely
+ (not (assq 'test cur-minor))
+ (equal (assq 'viewer info) ; Keep alternative viewer
+ (assq 'viewer cur-minor)))
(setcdr cur-minor info))
(t
- (setcdr old-major (cons (cons minor info) (cdr old-major)))))))))
+ (setcdr old-major (cons (cons minor info) (cdr old-major))))))
+ )))
(defun mailcap-add (type viewer &optional test)
"Add VIEWER as a handler for TYPE.
;;;
(defun mailcap-viewer-lessp (x y)
- ;; Return t iff viewer X is more desirable than viewer Y
+ "Return t if viewer X is more desirable than viewer Y."
(let ((x-wild (string-match "[*?]" (or (cdr-safe (assq 'type x)) "")))
(y-wild (string-match "[*?]" (or (cdr-safe (assq 'type y)) "")))
(x-lisp (not (stringp (or (cdr-safe (assq 'viewer x)) ""))))
(y-lisp (not (stringp (or (cdr-safe (assq 'viewer y)) "")))))
(cond
- ((and x-lisp (not y-lisp))
- t)
- ((and (not y-lisp) x-wild (not y-wild))
- t)
+ ((and x-wild (not y-wild))
+ nil)
((and (not x-wild) y-wild)
t)
+ ((and (not y-lisp) x-lisp)
+ t)
(t nil))))
-(defun mailcap-mime-info (string &optional request)
+(defun mailcap-mime-info (string &optional request no-decode)
"Get the MIME viewer command for STRING, return nil if none found.
Expects a complete content-type header line as its argument.
corresponding to that string will be returned (print, description,
whatever). If a number, then all the information for this specific
viewer is returned. If `all', then all possible viewers for
-this type is returned."
+this type is returned.
+
+If NO-DECODE is non-nil, don't decode STRING."
+ ;; NO-DECODE avoids calling `mail-header-parse-content-type' from
+ ;; `mail-parse.el'
(let (
major ; Major encoding (text, etc)
minor ; Minor encoding (html, etc)
info ; Other info
- save-pos ; Misc. position during parse
+ ; save-pos ; Misc. position during parse (unused?)
major-info ; (assoc major mailcap-mime-data)
- minor-info ; (assoc minor major-info)
- test ; current test proc.
+ ; minor-info ; (assoc minor major-info) (unused?)
+ ; test ; current test proc. (unused?)
viewers ; Possible viewers
passed ; Viewers that passed the test
viewer ; The one and only viewer
ctl)
(save-excursion
- (setq ctl (mail-header-parse-content-type (or string "text/plain")))
+ (setq ctl
+ (if no-decode
+ (list (or string "text/plain"))
+ (mail-header-parse-content-type (or string "text/plain"))))
(setq major (split-string (car ctl) "/"))
(setq minor (cadr major)
major (car major))
(if (mailcap-viewer-passes-test (car viewers) info)
(setq passed (cons (car viewers) passed)))
(setq viewers (cdr viewers)))
- (setq passed (sort (nreverse passed) 'mailcap-viewer-lessp))
+ (setq passed (sort passed 'mailcap-viewer-lessp))
(setq viewer (car passed))))
(when (and (stringp (cdr (assq 'viewer viewer)))
passed)
(setq viewer (car passed)))
(cond
((and (null viewer) (not (equal major "default")) request)
- (mailcap-mime-info "default" request))
+ (mailcap-mime-info "default" request no-decode))
((or (null request) (equal request ""))
(mailcap-unescape-mime-test (cdr (assq 'viewer viewer)) info))
((stringp request)
- (if (or (eq request 'test) (eq request 'viewer))
- (mailcap-unescape-mime-test
- (cdr-safe (assoc request viewer)) info)))
+ (mailcap-unescape-mime-test
+ (cdr-safe (assoc request viewer)) info))
((eq request 'all)
passed)
(t
;; MUST make a copy *sigh*, else we modify mailcap-mime-data
- (setq viewer (copy-tree viewer))
+ (setq viewer (copy-sequence viewer))
(let ((view (assq 'viewer viewer))
(test (assq 'test viewer)))
(if view (setcdr view (mailcap-unescape-mime-test (cdr view) info)))
;;;
(defvar mailcap-mime-extensions
- '(("" . "text/plain")
- (".abs" . "audio/x-mpeg")
- (".aif" . "audio/aiff")
- (".aifc" . "audio/aiff")
- (".aiff" . "audio/aiff")
- (".ano" . "application/x-annotator")
- (".au" . "audio/ulaw")
- (".avi" . "video/x-msvideo")
- (".bcpio" . "application/x-bcpio")
- (".bin" . "application/octet-stream")
- (".cdf" . "application/x-netcdr")
- (".cpio" . "application/x-cpio")
- (".csh" . "application/x-csh")
- (".dvi" . "application/x-dvi")
- (".el" . "application/emacs-lisp")
- (".eps" . "application/postscript")
- (".etx" . "text/x-setext")
- (".exe" . "application/octet-stream")
- (".fax" . "image/x-fax")
- (".gif" . "image/gif")
- (".hdf" . "application/x-hdf")
- (".hqx" . "application/mac-binhex40")
- (".htm" . "text/html")
- (".html" . "text/html")
- (".icon" . "image/x-icon")
- (".ief" . "image/ief")
- (".jpg" . "image/jpeg")
- (".macp" . "image/x-macpaint")
- (".man" . "application/x-troff-man")
- (".me" . "application/x-troff-me")
- (".mif" . "application/mif")
- (".mov" . "video/quicktime")
- (".movie" . "video/x-sgi-movie")
- (".mp2" . "audio/x-mpeg")
- (".mp3" . "audio/x-mpeg")
- (".mp2a" . "audio/x-mpeg2")
- (".mpa" . "audio/x-mpeg")
- (".mpa2" . "audio/x-mpeg2")
- (".mpe" . "video/mpeg")
- (".mpeg" . "video/mpeg")
- (".mpega" . "audio/x-mpeg")
- (".mpegv" . "video/mpeg")
- (".mpg" . "video/mpeg")
- (".mpv" . "video/mpeg")
- (".ms" . "application/x-troff-ms")
- (".nc" . "application/x-netcdf")
- (".nc" . "application/x-netcdf")
- (".oda" . "application/oda")
- (".patch" . "application/x-patch")
- (".pbm" . "image/x-portable-bitmap")
- (".pdf" . "application/pdf")
- (".pgm" . "image/portable-graymap")
- (".pict" . "image/pict")
- (".png" . "image/png")
- (".pnm" . "image/x-portable-anymap")
- (".ppm" . "image/portable-pixmap")
- (".ps" . "application/postscript")
- (".qt" . "video/quicktime")
- (".ras" . "image/x-raster")
- (".rgb" . "image/x-rgb")
- (".rtf" . "application/rtf")
- (".rtx" . "text/richtext")
- (".sh" . "application/x-sh")
- (".sit" . "application/x-stuffit")
- (".snd" . "audio/basic")
- (".src" . "application/x-wais-source")
- (".tar" . "archive/tar")
- (".tcl" . "application/x-tcl")
- (".tcl" . "application/x-tcl")
- (".tex" . "application/x-tex")
- (".texi" . "application/texinfo")
- (".tga" . "image/x-targa")
- (".tif" . "image/tiff")
- (".tiff" . "image/tiff")
- (".tr" . "application/x-troff")
- (".troff" . "application/x-troff")
- (".tsv" . "text/tab-separated-values")
- (".txt" . "text/plain")
- (".vbs" . "video/mpeg")
- (".vox" . "audio/basic")
- (".vrml" . "x-world/x-vrml")
- (".wav" . "audio/x-wav")
- (".wrl" . "x-world/x-vrml")
- (".xbm" . "image/xbm")
- (".xpm" . "image/xpm")
- (".xwd" . "image/windowdump")
- (".zip" . "application/zip")
- (".ai" . "application/postscript")
- (".jpe" . "image/jpeg")
- (".jpeg" . "image/jpeg"))
- "An assoc list of file extensions and corresponding MIME content-types.")
-
-(defun mailcap-parse-mimetypes (&optional path)
- ;; Parse out all the mimetypes specified in a unix-style path string PATH
- (cond
- (path nil)
- ((getenv "MIMETYPES") (setq path (getenv "MIMETYPES")))
- ((memq system-type '(ms-dos ms-windows windows-nt))
- (setq path (mapconcat 'expand-file-name
- '("~/mime.typ" "~/etc/mime.typ") ";")))
- (t (setq path (mapconcat 'expand-file-name
- '("~/.mime-types"
- "/etc/mime-types:/usr/etc/mime-types"
- "/usr/local/etc/mime-types"
- "/usr/local/www/conf/mime-types") ":"))))
- (let ((fnames (reverse
- (split-string path
- (if (memq system-type
- '(ms-dos ms-windows windows-nt))
- ";" ":"))))
- fname)
- (while fnames
- (setq fname (car fnames))
- (if (and (file-exists-p fname) (file-readable-p fname))
- (mailcap-parse-mimetype-file (car fnames)))
- (setq fnames (cdr fnames)))))
+ '(("" . "text/plain")
+ (".1" . "text/plain") ;; Manual pages
+ (".3" . "text/plain")
+ (".8" . "text/plain")
+ (".abs" . "audio/x-mpeg")
+ (".aif" . "audio/aiff")
+ (".aifc" . "audio/aiff")
+ (".aiff" . "audio/aiff")
+ (".ano" . "application/x-annotator")
+ (".au" . "audio/ulaw")
+ (".avi" . "video/x-msvideo")
+ (".bcpio" . "application/x-bcpio")
+ (".bin" . "application/octet-stream")
+ (".cdf" . "application/x-netcdr")
+ (".cpio" . "application/x-cpio")
+ (".csh" . "application/x-csh")
+ (".css" . "text/css")
+ (".dvi" . "application/x-dvi")
+ (".diff" . "text/x-patch")
+ (".dpatch". "test/x-patch")
+ (".el" . "application/emacs-lisp")
+ (".eps" . "application/postscript")
+ (".etx" . "text/x-setext")
+ (".exe" . "application/octet-stream")
+ (".fax" . "image/x-fax")
+ (".gif" . "image/gif")
+ (".hdf" . "application/x-hdf")
+ (".hqx" . "application/mac-binhex40")
+ (".htm" . "text/html")
+ (".html" . "text/html")
+ (".icon" . "image/x-icon")
+ (".ief" . "image/ief")
+ (".jpg" . "image/jpeg")
+ (".macp" . "image/x-macpaint")
+ (".man" . "application/x-troff-man")
+ (".me" . "application/x-troff-me")
+ (".mif" . "application/mif")
+ (".mov" . "video/quicktime")
+ (".movie" . "video/x-sgi-movie")
+ (".mp2" . "audio/x-mpeg")
+ (".mp3" . "audio/x-mpeg")
+ (".mp2a" . "audio/x-mpeg2")
+ (".mpa" . "audio/x-mpeg")
+ (".mpa2" . "audio/x-mpeg2")
+ (".mpe" . "video/mpeg")
+ (".mpeg" . "video/mpeg")
+ (".mpega" . "audio/x-mpeg")
+ (".mpegv" . "video/mpeg")
+ (".mpg" . "video/mpeg")
+ (".mpv" . "video/mpeg")
+ (".ms" . "application/x-troff-ms")
+ (".nc" . "application/x-netcdf")
+ (".nc" . "application/x-netcdf")
+ (".oda" . "application/oda")
+ (".patch" . "text/x-patch")
+ (".pbm" . "image/x-portable-bitmap")
+ (".pdf" . "application/pdf")
+ (".pgm" . "image/portable-graymap")
+ (".pict" . "image/pict")
+ (".png" . "image/png")
+ (".pnm" . "image/x-portable-anymap")
+ (".pod" . "text/plain")
+ (".ppm" . "image/portable-pixmap")
+ (".ps" . "application/postscript")
+ (".qt" . "video/quicktime")
+ (".ras" . "image/x-raster")
+ (".rgb" . "image/x-rgb")
+ (".rtf" . "application/rtf")
+ (".rtx" . "text/richtext")
+ (".sh" . "application/x-sh")
+ (".sit" . "application/x-stuffit")
+ (".siv" . "application/sieve")
+ (".snd" . "audio/basic")
+ (".soa" . "text/dns")
+ (".src" . "application/x-wais-source")
+ (".tar" . "archive/tar")
+ (".tcl" . "application/x-tcl")
+ (".tex" . "application/x-tex")
+ (".texi" . "application/texinfo")
+ (".tga" . "image/x-targa")
+ (".tif" . "image/tiff")
+ (".tiff" . "image/tiff")
+ (".tr" . "application/x-troff")
+ (".troff" . "application/x-troff")
+ (".tsv" . "text/tab-separated-values")
+ (".txt" . "text/plain")
+ (".vbs" . "video/mpeg")
+ (".vox" . "audio/basic")
+ (".vrml" . "x-world/x-vrml")
+ (".wav" . "audio/x-wav")
+ (".xls" . "application/vnd.ms-excel")
+ (".wrl" . "x-world/x-vrml")
+ (".xbm" . "image/xbm")
+ (".xpm" . "image/xpm")
+ (".xwd" . "image/windowdump")
+ (".zip" . "application/zip")
+ (".ai" . "application/postscript")
+ (".jpe" . "image/jpeg")
+ (".jpeg" . "image/jpeg")
+ (".org" . "text/x-org"))
+ "An alist of file extensions and corresponding MIME content-types.
+This exists for you to customize the information in Lisp. It is
+merged with values from mailcap files by `mailcap-parse-mimetypes'.")
+
+(defvar mailcap-mimetypes-parsed-p nil)
+
+(defun mailcap-parse-mimetypes (&optional path force)
+ "Parse out all the mimetypes specified in a Unix-style path string PATH.
+Components of PATH are separated by the `path-separator' character
+appropriate for this system. If PATH is omitted, use the value of
+environment variable MIMETYPES if set; otherwise use a default path.
+If FORCE, re-parse even if already parsed."
+ (interactive (list nil t))
+ (when (or (not mailcap-mimetypes-parsed-p)
+ force)
+ (cond
+ (path nil)
+ ((getenv "MIMETYPES") (setq path (getenv "MIMETYPES")))
+ ((memq system-type mailcap-poor-system-types)
+ (setq path '("~/mime.typ" "~/etc/mime.typ")))
+ (t (setq path
+ ;; mime.types seems to be the normal name, definitely so
+ ;; on current GNUish systems. The search order follows
+ ;; that for mailcap.
+ '("~/.mime.types"
+ "/etc/mime.types"
+ "/usr/etc/mime.types"
+ "/usr/local/etc/mime.types"
+ "/usr/local/www/conf/mime.types"
+ "~/.mime-types"
+ "/etc/mime-types"
+ "/usr/etc/mime-types"
+ "/usr/local/etc/mime-types"
+ "/usr/local/www/conf/mime-types"))))
+ (let ((fnames (reverse (if (stringp path)
+ (split-string path path-separator t)
+ path)))
+ fname)
+ (while fnames
+ (setq fname (car fnames))
+ (if (and (file-readable-p fname))
+ (mailcap-parse-mimetype-file fname))
+ (setq fnames (cdr fnames))))
+ (setq mailcap-mimetypes-parsed-p t)))
(defun mailcap-parse-mimetype-file (fname)
- ;; Parse out a mime-types file
+ "Parse out a mime-types file FNAME."
(let (type ; The MIME type for this line
extns ; The extensions for this line
save-pos ; Misc. saved buffer positions
(while (not (eobp))
(skip-chars-forward " \t\n")
(setq save-pos (point))
- (skip-chars-forward "^ \t")
+ (skip-chars-forward "^ \t\n")
(downcase-region save-pos (point))
(setq type (buffer-substring save-pos (point)))
(while (not (eolp))
(defun mailcap-extension-to-mime (extn)
"Return the MIME content type of the file extensions EXTN."
+ (mailcap-parse-mimetypes)
(if (and (stringp extn)
(not (eq (string-to-char extn) ?.)))
(setq extn (concat "." extn)))
(cdr (assoc (downcase extn) mailcap-mime-extensions)))
-(defvar mailcap-binary-suffixes
- (if (memq system-type '(ms-dos windows-nt))
- '(".exe" ".com" ".bat" ".cmd" ".btm" "")
- '("")))
-
-(defun mailcap-command-p (command)
- "Say whether COMMAND is in the exec path.
-The path of COMMAND will be returned iff COMMAND is a command."
- (let ((path (if (file-name-absolute-p command) '(nil) exec-path))
- file dir)
- (catch 'found
- (while (setq dir (pop path))
- (let ((suffixes mailcap-binary-suffixes))
- (while suffixes
- (when (and (file-executable-p
- (setq file (expand-file-name
- (concat command (pop suffixes))
- dir)))
- (not (file-directory-p file)))
- (throw 'found file))))))))
+;; Unused?
+(defalias 'mailcap-command-p 'executable-find)
+
+(defun mailcap-mime-types ()
+ "Return a list of MIME media types."
+ (mailcap-parse-mimetypes)
+ (mailcap-delete-duplicates
+ (nconc
+ (mapcar 'cdr mailcap-mime-extensions)
+ (apply
+ 'nconc
+ (mapcar
+ (lambda (l)
+ (delq nil
+ (mapcar
+ (lambda (m)
+ (let ((type (cdr (assq 'type (cdr m)))))
+ (if (equal (cadr (split-string type "/"))
+ "*")
+ nil
+ type)))
+ (cdr l))))
+ mailcap-mime-data)))))
+
+;;;
+;;; Useful supplementary functions
+;;;
+
+(defun mailcap-file-default-commands (files)
+ "Return a list of default commands for FILES."
+ (mailcap-parse-mailcaps)
+ (mailcap-parse-mimetypes)
+ (let* ((all-mime-type
+ ;; All unique MIME types from file extensions
+ (mailcap-delete-duplicates
+ (mapcar (lambda (file)
+ (mailcap-extension-to-mime
+ (file-name-extension file t)))
+ files)))
+ (all-mime-info
+ ;; All MIME info lists
+ (mailcap-delete-duplicates
+ (mapcar (lambda (mime-type)
+ (mailcap-mime-info mime-type 'all))
+ all-mime-type)))
+ (common-mime-info
+ ;; Intersection of mime-infos from different mime-types;
+ ;; or just the first MIME info for a single MIME type
+ (if (cdr all-mime-info)
+ (delq nil (mapcar (lambda (mi1)
+ (unless (memq nil (mapcar
+ (lambda (mi2)
+ (member mi1 mi2))
+ (cdr all-mime-info)))
+ mi1))
+ (car all-mime-info)))
+ (car all-mime-info)))
+ (commands
+ ;; Command strings from `viewer' field of the MIME info
+ (mailcap-delete-duplicates
+ (delq nil (mapcar (lambda (mime-info)
+ (let ((command (cdr (assoc 'viewer mime-info))))
+ (if (stringp command)
+ (mailcap-replace-in-string
+ ;; Replace mailcap's `%s' placeholder
+ ;; with dired's `?' placeholder
+ (mailcap-replace-in-string
+ ;; Remove the final filename placeholder
+ command "[ \t\n]*\\('\\)?%s\\1?[ \t\n]*\\'" "" t)
+ "%s" "?" t))))
+ common-mime-info)))))
+ commands))
+
+(defun mailcap-view-mime (type)
+ "View the data in the current buffer that has MIME type TYPE.
+`mailcap-mime-data' determines the method to use."
+ (let ((method (mailcap-mime-info type)))
+ (if (stringp method)
+ (shell-command-on-region (point-min) (point-max)
+ ;; Use stdin as the "%s".
+ (format method "-")
+ (current-buffer)
+ t)
+ (funcall method))))
(provide 'mailcap)
projects / gnus / blobdiff