| 1 | ;;; mh-utils.el --- MH-E code needed for both sending and reading |
| 2 | |
| 3 | ;; Copyright (C) 1993, 1995, 1997, 2000, 2001, 2002 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: Bill Wohler <wohler@newt.com> |
| 6 | ;; Maintainer: Bill Wohler <wohler@newt.com> |
| 7 | ;; Keywords: mail |
| 8 | ;; See: mh-e.el |
| 9 | |
| 10 | ;; This file is part of GNU Emacs. |
| 11 | |
| 12 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 13 | ;; it under the terms of the GNU General Public License as published by |
| 14 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 15 | ;; any later version. |
| 16 | |
| 17 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | ;; GNU General Public License for more details. |
| 21 | |
| 22 | ;; You should have received a copy of the GNU General Public License |
| 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
| 24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 25 | ;; Boston, MA 02111-1307, USA. |
| 26 | |
| 27 | ;;; Commentary: |
| 28 | |
| 29 | ;; Internal support for MH-E package. |
| 30 | |
| 31 | ;;; Change Log: |
| 32 | |
| 33 | ;; $Id: mh-utils.el,v 1.2 2003/02/03 20:55:30 wohler Exp $ |
| 34 | |
| 35 | ;;; Code: |
| 36 | |
| 37 | ;; Is this XEmacs-land? Located here since needed by mh-customize.el. |
| 38 | (defvar mh-xemacs-flag (featurep 'xemacs) |
| 39 | "Non-nil means the current Emacs is XEmacs.") |
| 40 | |
| 41 | (require 'cl) |
| 42 | (require 'gnus-util) |
| 43 | (require 'font-lock) |
| 44 | (require 'mh-loaddefs) |
| 45 | (require 'mh-customize) |
| 46 | |
| 47 | (load "mm-decode" t t) ; Non-fatal dependency |
| 48 | (load "mm-view" t t) ; Non-fatal dependency |
| 49 | (load "executable" t t) ; Non-fatal dependency on |
| 50 | ; executable-find |
| 51 | |
| 52 | ;; Shush the byte-compiler |
| 53 | (defvar font-lock-auto-fontify) |
| 54 | (defvar font-lock-defaults) |
| 55 | (defvar mark-active) |
| 56 | (defvar tool-bar-mode) |
| 57 | |
| 58 | ;;; Autoloads |
| 59 | (autoload 'gnus-article-highlight-citation "gnus-cite") |
| 60 | (autoload 'mail-header-end "sendmail") |
| 61 | (autoload 'Info-goto-node "info") |
| 62 | (unless (fboundp 'make-hash-table) |
| 63 | (autoload 'make-hash-table "cl")) |
| 64 | |
| 65 | ;;; Set for local environment: |
| 66 | ;;; mh-progs and mh-lib used to be set in paths.el, which tried to |
| 67 | ;;; figure out at build time which of several possible directories MH |
| 68 | ;;; was installed into. But if you installed MH after building Emacs, |
| 69 | ;;; this would almost certainly be wrong, so now we do it at run time. |
| 70 | |
| 71 | (defvar mh-progs nil |
| 72 | "Directory containing MH commands, such as inc, repl, and rmm.") |
| 73 | |
| 74 | (defvar mh-lib nil |
| 75 | "Directory containing the MH library. |
| 76 | This directory contains, among other things, the components file.") |
| 77 | |
| 78 | (defvar mh-lib-progs nil |
| 79 | "Directory containing MH helper programs. |
| 80 | This directory contains, among other things, the mhl program.") |
| 81 | |
| 82 | (defvar mh-nmh-flag nil |
| 83 | "Non-nil means nmh is installed on this system instead of MH.") |
| 84 | |
| 85 | ;;;###autoload |
| 86 | (put 'mh-progs 'risky-local-variable t) |
| 87 | ;;;###autoload |
| 88 | (put 'mh-lib 'risky-local-variable t) |
| 89 | ;;;###autoload |
| 90 | (put 'mh-lib-progs 'risky-local-variable t) |
| 91 | ;;;###autoload |
| 92 | (put 'mh-nmh-flag 'risky-local-variable t) |
| 93 | |
| 94 | ;;; CL Replacements |
| 95 | (defun mh-search-from-end (char string) |
| 96 | "Return the position of last occurrence of CHAR in STRING. |
| 97 | If CHAR is not present in STRING then return nil. The function is used in lieu |
| 98 | of `search' in the CL package." |
| 99 | (loop for index from (1- (length string)) downto 0 |
| 100 | when (equal (aref string index) char) return index |
| 101 | finally return nil)) |
| 102 | |
| 103 | ;;; Macro to generate correct code for different emacs variants |
| 104 | |
| 105 | (defmacro mh-mark-active-p (check-transient-mark-mode-flag) |
| 106 | "A macro that expands into appropriate code in XEmacs and nil in GNU Emacs. |
| 107 | In GNU Emacs if CHECK-TRANSIENT-MARK-MODE-FLAG is non-nil then check if |
| 108 | variable `transient-mark-mode' is active." |
| 109 | (cond (mh-xemacs-flag ;XEmacs |
| 110 | `(and (boundp 'zmacs-regions) zmacs-regions (region-active-p))) |
| 111 | ((not check-transient-mark-mode-flag) ;GNU Emacs |
| 112 | `(and (boundp 'mark-active) mark-active)) |
| 113 | (t ;GNU Emacs |
| 114 | `(and (boundp 'transient-mark-mode) transient-mark-mode |
| 115 | (boundp 'mark-active) mark-active)))) |
| 116 | |
| 117 | ;;; Additional header fields that might someday be added: |
| 118 | ;;; "Sender: " "Reply-to: " |
| 119 | |
| 120 | (defvar mh-scan-msg-number-regexp "^ *\\([0-9]+\\)" |
| 121 | "Regexp to find the number of a message in a scan line. |
| 122 | The message's number must be surrounded with \\( \\)") |
| 123 | |
| 124 | (defvar mh-scan-msg-overflow-regexp "^[?0-9][0-9]" |
| 125 | "Regexp to find a scan line in which the message number overflowed. |
| 126 | The message's number is left truncated in this case.") |
| 127 | |
| 128 | (defvar mh-scan-msg-format-regexp "%\\([0-9]*\\)(msg)" |
| 129 | "Regexp to find message number width in an scan format. |
| 130 | The message number width must be surrounded with \\( \\).") |
| 131 | |
| 132 | (defvar mh-scan-msg-format-string "%d" |
| 133 | "Format string for width of the message number in a scan format. |
| 134 | Use `0%d' for zero-filled message numbers.") |
| 135 | |
| 136 | (defvar mh-scan-msg-search-regexp "^[^0-9]*%d[^0-9]" |
| 137 | "Format string containing a regexp matching the scan listing for a message. |
| 138 | The desired message's number will be an argument to format.") |
| 139 | |
| 140 | (defvar mh-default-folder-for-message-function nil |
| 141 | "Function to select a default folder for refiling or Fcc. |
| 142 | If set to a function, that function is called with no arguments by |
| 143 | `\\[mh-refile-msg]' and `\\[mh-to-fcc]' to get a default when |
| 144 | prompting the user for a folder. The function is called from within a |
| 145 | `save-excursion', with point at the start of the message. It should |
| 146 | return the folder to offer as the refile or Fcc folder, as a string |
| 147 | with a leading `+' sign. It can also return an empty string to use no |
| 148 | default, or nil to calculate the default the usual way. |
| 149 | NOTE: This variable is not an ordinary hook; |
| 150 | It may not be a list of functions.") |
| 151 | |
| 152 | (defvar mh-show-buffer-mode-line-buffer-id " {show-%s} %d" |
| 153 | "Format string to produce `mode-line-buffer-identification' for show buffers. |
| 154 | First argument is folder name. Second is message number.") |
| 155 | |
| 156 | (defvar mh-cmd-note 4 |
| 157 | "Column to insert notation. |
| 158 | Use `mh-set-cmd-note' to modify it. |
| 159 | This value may be dynamically updated if `mh-adaptive-cmd-note-flag' is |
| 160 | non-nil and `mh-scan-format-file' is t. |
| 161 | Note that the first column is column number 0.") |
| 162 | (make-variable-buffer-local 'mh-cmd-note) |
| 163 | |
| 164 | (defvar mh-note-seq "%" |
| 165 | "String whose first character is used to notate messages in a sequence.") |
| 166 | |
| 167 | (defvar mh-mail-header-separator "--------" |
| 168 | "*Line used by MH to separate headers from text in messages being composed. |
| 169 | This variable should not be used directly in programs. Programs should use |
| 170 | `mail-header-separator' instead. `mail-header-separator' is initialized to |
| 171 | `mh-mail-header-separator' in `mh-letter-mode'; in other contexts, you may |
| 172 | have to perform this initialization yourself. |
| 173 | |
| 174 | Do not make this a regexp as it may be the argument to `insert' and it is |
| 175 | passed through `regexp-quote' before being used by functions like |
| 176 | `re-search-forward'.") |
| 177 | |
| 178 | ;; Variables for MIME display |
| 179 | |
| 180 | ;; Structure to keep track of MIME handles on a per buffer basis. |
| 181 | (defstruct (mh-buffer-data (:conc-name mh-mime-) |
| 182 | (:constructor mh-make-buffer-data)) |
| 183 | (handles ()) ; List of MIME handles |
| 184 | (handles-cache (make-hash-table)) ; Cache to avoid multiple decodes of |
| 185 | ; nested messages |
| 186 | (parts-count 0) ; The button number is generated from |
| 187 | ; this number |
| 188 | (part-index-hash (make-hash-table))) ; Avoid incrementing the part number |
| 189 | ; for nested messages |
| 190 | ;;; This has to be a macro, since we do: (setf (mh-buffer-data) ...) |
| 191 | (defmacro mh-buffer-data () |
| 192 | "Convenience macro to get the MIME data structures of the current buffer." |
| 193 | `(gethash (current-buffer) mh-globals-hash)) |
| 194 | |
| 195 | (defvar mh-globals-hash (make-hash-table) |
| 196 | "Keeps track of MIME data on a per buffer basis.") |
| 197 | |
| 198 | (defvar mh-gnus-pgp-support-flag (not (not (locate-library "mml2015"))) |
| 199 | "Non-nil means installed Gnus has PGP support.") |
| 200 | |
| 201 | (defvar mh-mm-inline-media-tests |
| 202 | `(("image/jpeg" |
| 203 | mm-inline-image |
| 204 | (lambda (handle) |
| 205 | (mm-valid-and-fit-image-p 'jpeg handle))) |
| 206 | ("image/png" |
| 207 | mm-inline-image |
| 208 | (lambda (handle) |
| 209 | (mm-valid-and-fit-image-p 'png handle))) |
| 210 | ("image/gif" |
| 211 | mm-inline-image |
| 212 | (lambda (handle) |
| 213 | (mm-valid-and-fit-image-p 'gif handle))) |
| 214 | ("image/tiff" |
| 215 | mm-inline-image |
| 216 | (lambda (handle) |
| 217 | (mm-valid-and-fit-image-p 'tiff handle)) ) |
| 218 | ("image/xbm" |
| 219 | mm-inline-image |
| 220 | (lambda (handle) |
| 221 | (mm-valid-and-fit-image-p 'xbm handle))) |
| 222 | ("image/x-xbitmap" |
| 223 | mm-inline-image |
| 224 | (lambda (handle) |
| 225 | (mm-valid-and-fit-image-p 'xbm handle))) |
| 226 | ("image/xpm" |
| 227 | mm-inline-image |
| 228 | (lambda (handle) |
| 229 | (mm-valid-and-fit-image-p 'xpm handle))) |
| 230 | ("image/x-pixmap" |
| 231 | mm-inline-image |
| 232 | (lambda (handle) |
| 233 | (mm-valid-and-fit-image-p 'xpm handle))) |
| 234 | ("image/bmp" |
| 235 | mm-inline-image |
| 236 | (lambda (handle) |
| 237 | (mm-valid-and-fit-image-p 'bmp handle))) |
| 238 | ("image/x-portable-bitmap" |
| 239 | mm-inline-image |
| 240 | (lambda (handle) |
| 241 | (mm-valid-and-fit-image-p 'pbm handle))) |
| 242 | ("text/plain" mm-inline-text identity) |
| 243 | ("text/enriched" mm-inline-text identity) |
| 244 | ("text/richtext" mm-inline-text identity) |
| 245 | ("text/x-patch" mm-display-patch-inline |
| 246 | (lambda (handle) |
| 247 | (locate-library "diff-mode"))) |
| 248 | ("application/emacs-lisp" mm-display-elisp-inline identity) |
| 249 | ("application/x-emacs-lisp" mm-display-elisp-inline identity) |
| 250 | ("text/html" |
| 251 | ,(if (fboundp 'mm-inline-text-html) 'mm-inline-text-html 'mm-inline-text) |
| 252 | (lambda (handle) |
| 253 | (or (and (boundp 'mm-inline-text-html-renderer) |
| 254 | mm-inline-text-html-renderer) |
| 255 | (and (boundp 'mm-text-html-renderer) mm-text-html-renderer)))) |
| 256 | ("text/x-vcard" |
| 257 | mm-inline-text-vcard |
| 258 | (lambda (handle) |
| 259 | (or (featurep 'vcard) |
| 260 | (locate-library "vcard")))) |
| 261 | ("message/delivery-status" mm-inline-text identity) |
| 262 | ("message/rfc822" mh-mm-inline-message identity) |
| 263 | ;;("message/partial" mm-inline-partial identity) |
| 264 | ;;("message/external-body" mm-inline-external-body identity) |
| 265 | ("text/.*" mm-inline-text identity) |
| 266 | ("audio/wav" mm-inline-audio |
| 267 | (lambda (handle) |
| 268 | (and (or (featurep 'nas-sound) (featurep 'native-sound)) |
| 269 | (device-sound-enabled-p)))) |
| 270 | ("audio/au" |
| 271 | mm-inline-audio |
| 272 | (lambda (handle) |
| 273 | (and (or (featurep 'nas-sound) (featurep 'native-sound)) |
| 274 | (device-sound-enabled-p)))) |
| 275 | ("application/pgp-signature" ignore identity) |
| 276 | ("application/x-pkcs7-signature" ignore identity) |
| 277 | ("application/pkcs7-signature" ignore identity) |
| 278 | ("application/x-pkcs7-mime" ignore identity) |
| 279 | ("application/pkcs7-mime" ignore identity) |
| 280 | ("multipart/alternative" ignore identity) |
| 281 | ("multipart/mixed" ignore identity) |
| 282 | ("multipart/related" ignore identity) |
| 283 | ;; Disable audio and image |
| 284 | ("audio/.*" ignore ignore) |
| 285 | ("image/.*" ignore ignore) |
| 286 | ;; Default to displaying as text |
| 287 | (".*" mm-inline-text mm-readable-p)) |
| 288 | "Alist of media types/tests saying whether types can be displayed inline.") |
| 289 | |
| 290 | ;; Needed by mh-comp.el and mh-mime.el |
| 291 | (defvar mh-mhn-compose-insert-flag nil |
| 292 | "Non-nil means MIME insertion was done. |
| 293 | Triggers an automatic call to `mh-edit-mhn' in `mh-send-letter'. |
| 294 | This variable is buffer-local.") |
| 295 | (make-variable-buffer-local 'mh-mhn-compose-insert-flag) |
| 296 | |
| 297 | (defvar mh-mml-compose-insert-flag nil |
| 298 | "Non-nil means that a MIME insertion was done. |
| 299 | This buffer-local variable is used to remember if a MIME insertion was done. |
| 300 | Triggers an automatic call to `mh-mml-to-mime' in `mh-send-letter'.") |
| 301 | (make-variable-buffer-local 'mh-mml-compose-insert-flag) |
| 302 | |
| 303 | ;; Copy of `goto-address-mail-regexp' |
| 304 | (defvar mh-address-mail-regexp |
| 305 | "[-a-zA-Z0-9._]+@[-a-zA-z0-9_]+\\.+[a-zA-Z0-9]+" |
| 306 | "A regular expression probably matching an e-mail address.") |
| 307 | |
| 308 | ;; From goto-addr.el, which we don't want to force-load on users. |
| 309 | ;;;###mh-autoload |
| 310 | (defun mh-goto-address-find-address-at-point () |
| 311 | "Find e-mail address around or before point. |
| 312 | Then search backwards to beginning of line for the start of an e-mail |
| 313 | address. If no e-mail address found, return nil." |
| 314 | (re-search-backward "[^-_A-z0-9.@]" (line-beginning-position) 'lim) |
| 315 | (if (or (looking-at mh-address-mail-regexp) ; already at start |
| 316 | (and (re-search-forward mh-address-mail-regexp |
| 317 | (line-end-position) 'lim) |
| 318 | (goto-char (match-beginning 0)))) |
| 319 | (match-string-no-properties 0))) |
| 320 | |
| 321 | (defun mh-in-header-p () |
| 322 | "Return non-nil if the point is in the header of a draft message." |
| 323 | (< (point) (mail-header-end))) |
| 324 | |
| 325 | (defun mh-header-field-beginning () |
| 326 | "Move to the beginning of the current header field. |
| 327 | Handles RFC 822 continuation lines." |
| 328 | (beginning-of-line) |
| 329 | (while (looking-at "^[ \t]") |
| 330 | (forward-line -1))) |
| 331 | |
| 332 | (defun mh-header-field-end () |
| 333 | "Move to the end of the current header field. |
| 334 | Handles RFC 822 continuation lines." |
| 335 | (forward-line 1) |
| 336 | (while (looking-at "^[ \t]") |
| 337 | (forward-line 1)) |
| 338 | (backward-char 1)) ;to end of previous line |
| 339 | |
| 340 | (defun mh-letter-header-font-lock (limit) |
| 341 | "Return the entire mail header to font-lock. |
| 342 | Argument LIMIT limits search." |
| 343 | (if (= (point) limit) |
| 344 | nil |
| 345 | (let* ((mail-header-end (save-match-data (mail-header-end))) |
| 346 | (lesser-limit (if (< mail-header-end limit) mail-header-end limit))) |
| 347 | (when (mh-in-header-p) |
| 348 | (set-match-data (list 1 lesser-limit)) |
| 349 | (goto-char lesser-limit) |
| 350 | t)))) |
| 351 | |
| 352 | (defun mh-header-field-font-lock (field limit) |
| 353 | "Return the value of a header field FIELD to font-lock. |
| 354 | Argument LIMIT limits search." |
| 355 | (if (= (point) limit) |
| 356 | nil |
| 357 | (let* ((mail-header-end (mail-header-end)) |
| 358 | (lesser-limit (if (< mail-header-end limit) mail-header-end limit)) |
| 359 | (case-fold-search t)) |
| 360 | (when (and (< (point) mail-header-end) ;Only within header |
| 361 | (re-search-forward (format "^%s" field) lesser-limit t)) |
| 362 | (let ((match-one-b (match-beginning 0)) |
| 363 | (match-one-e (match-end 0))) |
| 364 | (mh-header-field-end) |
| 365 | (if (> (point) limit) ;Don't search for end beyond limit |
| 366 | (goto-char limit)) |
| 367 | (set-match-data (list match-one-b match-one-e |
| 368 | (1+ match-one-e) (point))) |
| 369 | t))))) |
| 370 | |
| 371 | (defun mh-header-to-font-lock (limit) |
| 372 | "Return the value of a header field To to font-lock. |
| 373 | Argument LIMIT limits search." |
| 374 | (mh-header-field-font-lock "To:" limit)) |
| 375 | |
| 376 | (defun mh-header-cc-font-lock (limit) |
| 377 | "Return the value of a header field cc to font-lock. |
| 378 | Argument LIMIT limits search." |
| 379 | (mh-header-field-font-lock "cc:" limit)) |
| 380 | |
| 381 | (defun mh-header-subject-font-lock (limit) |
| 382 | "Return the value of a header field Subject to font-lock. |
| 383 | Argument LIMIT limits search." |
| 384 | (mh-header-field-font-lock "Subject:" limit)) |
| 385 | |
| 386 | (eval-and-compile |
| 387 | ;; Otherwise byte-compilation fails on `mh-show-font-lock-keywords-with-cite' |
| 388 | (defvar mh-show-font-lock-keywords |
| 389 | '(("^\\(From:\\|Sender:\\)\\(.*\\)" (1 'default) (2 mh-show-from-face)) |
| 390 | (mh-header-to-font-lock (0 'default) (1 mh-show-to-face)) |
| 391 | (mh-header-cc-font-lock (0 'default) (1 mh-show-cc-face)) |
| 392 | ("^\\(Reply-To:\\|Return-Path:\\)\\(.*\\)$" |
| 393 | (1 'default) (2 mh-show-from-face)) |
| 394 | (mh-header-subject-font-lock (0 'default) (1 mh-show-subject-face)) |
| 395 | ("^\\(Apparently-To:\\|Newsgroups:\\)\\(.*\\)" |
| 396 | (1 'default) (2 mh-show-cc-face)) |
| 397 | ("^\\(In-reply-to\\|Date\\):\\(.*\\)$" |
| 398 | (1 'default) (2 mh-show-date-face)) |
| 399 | (mh-letter-header-font-lock (0 mh-show-header-face append t))) |
| 400 | "Additional expressions to highlight in MH-show mode.")) |
| 401 | |
| 402 | (defvar mh-show-font-lock-keywords-with-cite |
| 403 | (eval-when-compile |
| 404 | (let* ((cite-chars "[>|}]") |
| 405 | (cite-prefix "A-Za-z") |
| 406 | (cite-suffix (concat cite-prefix "0-9_.@-`'\""))) |
| 407 | (append |
| 408 | mh-show-font-lock-keywords |
| 409 | (list |
| 410 | ;; Use MATCH-ANCHORED to effectively anchor the regexp left side. |
| 411 | `(,cite-chars |
| 412 | (,(concat "\\=[ \t]*" |
| 413 | "\\(\\([" cite-prefix "]+[" cite-suffix "]*\\)?" |
| 414 | "\\(" cite-chars "[ \t]*\\)\\)+" |
| 415 | "\\(.*\\)") |
| 416 | (beginning-of-line) (end-of-line) |
| 417 | (2 font-lock-constant-face nil t) |
| 418 | (4 font-lock-comment-face nil t))))))) |
| 419 | "Additional expressions to highlight in MH-show mode.") |
| 420 | |
| 421 | (defun mh-show-font-lock-fontify-region (beg end loudly) |
| 422 | "Limit font-lock in `mh-show-mode' to the header. |
| 423 | Used when `mh-highlight-citation-p' is set to gnus, leaving the body to be |
| 424 | dealt with by gnus highlighting. The region between BEG and END is |
| 425 | given over to be fontified and LOUDLY controls if a user sees a |
| 426 | message about the fontification operation." |
| 427 | (let ((header-end (mail-header-end))) |
| 428 | (cond |
| 429 | ((and (< beg header-end)(< end header-end)) |
| 430 | (font-lock-default-fontify-region beg end loudly)) |
| 431 | ((and (< beg header-end)(>= end header-end)) |
| 432 | (font-lock-default-fontify-region beg header-end loudly)) |
| 433 | (t |
| 434 | nil)))) |
| 435 | |
| 436 | ;; Needed to help shush the byte-compiler. |
| 437 | (if mh-xemacs-flag |
| 438 | (progn |
| 439 | (eval-and-compile |
| 440 | (require 'gnus) |
| 441 | (require 'gnus-art) |
| 442 | (require 'gnus-cite)))) |
| 443 | |
| 444 | (defun mh-gnus-article-highlight-citation () |
| 445 | "Highlight cited text in current buffer using gnus." |
| 446 | (interactive) |
| 447 | ;; Requiring gnus-cite should have been sufficient. However for Emacs21.1, |
| 448 | ;; recursive-load-depth-limit is only 10, so an error occurs. Also it may be |
| 449 | ;; better to have an autoload at top-level (though that won't work because |
| 450 | ;; of recursive-load-depth-limit). That gets rid of a compiler warning as |
| 451 | ;; well. |
| 452 | (unless mh-xemacs-flag |
| 453 | (require 'gnus-art) |
| 454 | (require 'gnus-cite)) |
| 455 | ;; Don't allow Gnus to create buttons while highlighting, maybe this is bad |
| 456 | ;; style? |
| 457 | (flet ((gnus-article-add-button (&rest args) nil)) |
| 458 | (let* ((modified (buffer-modified-p)) |
| 459 | (gnus-article-buffer (buffer-name)) |
| 460 | (gnus-cite-face-list `(,@(cdr gnus-cite-face-list) |
| 461 | ,(car gnus-cite-face-list)))) |
| 462 | (gnus-article-highlight-citation t) |
| 463 | (set-buffer-modified-p modified)))) |
| 464 | |
| 465 | ;;; Internal bookkeeping variables: |
| 466 | |
| 467 | ;; Cached value of the `Path:' component in the user's MH profile. |
| 468 | ;; User's mail folder directory. |
| 469 | (defvar mh-user-path nil) |
| 470 | |
| 471 | ;; An mh-draft-folder of nil means do not use a draft folder. |
| 472 | ;; Cached value of the `Draft-Folder:' component in the user's MH profile. |
| 473 | ;; Name of folder containing draft messages. |
| 474 | (defvar mh-draft-folder nil) |
| 475 | |
| 476 | ;; Cached value of the `Unseen-Sequence:' component in the user's MH profile. |
| 477 | ;; Name of the Unseen sequence. |
| 478 | (defvar mh-unseen-seq nil) |
| 479 | |
| 480 | ;; Cached value of the `Previous-Sequence:' component in the user's MH |
| 481 | ;; profile. |
| 482 | ;; Name of the Previous sequence. |
| 483 | (defvar mh-previous-seq nil) |
| 484 | |
| 485 | ;; Cached value of the `Inbox:' component in the user's MH profile, |
| 486 | ;; or "+inbox" if no such component. |
| 487 | ;; Name of the Inbox folder. |
| 488 | (defvar mh-inbox nil) |
| 489 | |
| 490 | ;; The names of ephemeral buffers have a " *mh-" prefix (so that they are |
| 491 | ;; hidden and can be programmatically removed in mh-quit), and the variable |
| 492 | ;; names have the form mh-temp-.*-buffer. |
| 493 | (defconst mh-temp-buffer " *mh-temp*") ;scratch |
| 494 | |
| 495 | ;; The names of MH-E buffers that are not ephemeral and can be used by the |
| 496 | ;; user (and deleted by the user when no longer needed) have a "*MH-E " prefix |
| 497 | ;; (so they can be programmatically removed in mh-quit), and the variable |
| 498 | ;; names have the form mh-.*-buffer. |
| 499 | (defconst mh-folders-buffer "*MH-E Folders*") ;folder list |
| 500 | (defconst mh-info-buffer "*MH-E Info*") ;version information buffer |
| 501 | (defconst mh-log-buffer "*MH-E Log*") ;output of MH commands and so on |
| 502 | (defconst mh-recipients-buffer "*MH-E Recipients*") ;killed when draft sent |
| 503 | (defconst mh-sequences-buffer "*MH-E Sequences*") ;sequences list |
| 504 | |
| 505 | ;; Window configuration before MH-E command. |
| 506 | (defvar mh-previous-window-config nil) |
| 507 | |
| 508 | ;;Non-nil means next SPC or whatever goes to next undeleted message. |
| 509 | (defvar mh-page-to-next-msg-flag nil) |
| 510 | |
| 511 | ;;; Internal variables local to a folder. |
| 512 | |
| 513 | ;; Name of current folder, a string. |
| 514 | (defvar mh-current-folder nil) |
| 515 | |
| 516 | ;; Buffer that displays message for this folder. |
| 517 | (defvar mh-show-buffer nil) |
| 518 | |
| 519 | ;; Full path of directory for this folder. |
| 520 | (defvar mh-folder-filename nil) |
| 521 | |
| 522 | ;;Number of msgs in buffer. |
| 523 | (defvar mh-msg-count nil) |
| 524 | |
| 525 | ;; If non-nil, show the message in a separate window. |
| 526 | (defvar mh-showing-mode nil) |
| 527 | |
| 528 | (defvar mh-show-mode-map (make-sparse-keymap) |
| 529 | "Keymap used by the show buffer.") |
| 530 | |
| 531 | (defvar mh-show-folder-buffer nil |
| 532 | "Keeps track of folder whose message is being displayed.") |
| 533 | |
| 534 | (defvar mh-logo-cache nil) |
| 535 | |
| 536 | (defun mh-logo-display () |
| 537 | "Modify mode line to display MH-E logo." |
| 538 | (when (fboundp 'find-image) |
| 539 | (add-text-properties |
| 540 | 0 2 |
| 541 | `(display ,(or mh-logo-cache |
| 542 | (setq mh-logo-cache |
| 543 | (find-image '((:type xpm :ascent center |
| 544 | :file "mh-logo.xpm")))))) |
| 545 | (car mode-line-buffer-identification)))) |
| 546 | |
| 547 | ;;; This holds a documentation string used by describe-mode. |
| 548 | (defun mh-showing-mode (&optional arg) |
| 549 | "Change whether messages should be displayed. |
| 550 | With arg, display messages iff ARG is positive." |
| 551 | (setq mh-showing-mode |
| 552 | (if (null arg) |
| 553 | (not mh-showing-mode) |
| 554 | (> (prefix-numeric-value arg) 0)))) |
| 555 | |
| 556 | ;; The sequences of this folder. An alist of (seq . msgs). |
| 557 | (defvar mh-seq-list nil) |
| 558 | |
| 559 | ;; List of displayed messages to be removed from the Unseen sequence. |
| 560 | (defvar mh-seen-list nil) |
| 561 | |
| 562 | ;; If non-nil, show buffer contains message with all headers. |
| 563 | ;; If nil, show buffer contains message processed normally. |
| 564 | ;; Showing message with headers or normally. |
| 565 | (defvar mh-showing-with-headers nil) |
| 566 | |
| 567 | |
| 568 | ;;; MH-E macros |
| 569 | |
| 570 | (defmacro with-mh-folder-updating (save-modification-flag &rest body) |
| 571 | "Format is (with-mh-folder-updating (SAVE-MODIFICATION-FLAG) &body BODY). |
| 572 | Execute BODY, which can modify the folder buffer without having to |
| 573 | worry about file locking or the read-only flag, and return its result. |
| 574 | If SAVE-MODIFICATION-FLAG is non-nil, the buffer's modification |
| 575 | flag is unchanged, otherwise it is cleared." |
| 576 | (setq save-modification-flag (car save-modification-flag)) ; CL style |
| 577 | `(prog1 |
| 578 | (let ((mh-folder-updating-mod-flag (buffer-modified-p)) |
| 579 | (buffer-read-only nil) |
| 580 | (buffer-file-name nil)) ;don't let the buffer get locked |
| 581 | (prog1 |
| 582 | (progn |
| 583 | ,@body) |
| 584 | (mh-set-folder-modified-p mh-folder-updating-mod-flag))) |
| 585 | ,@(if (not save-modification-flag) |
| 586 | '((mh-set-folder-modified-p nil))))) |
| 587 | |
| 588 | (put 'with-mh-folder-updating 'lisp-indent-hook 1) |
| 589 | |
| 590 | (defmacro mh-in-show-buffer (show-buffer &rest body) |
| 591 | "Format is (mh-in-show-buffer (SHOW-BUFFER) &body BODY). |
| 592 | Display buffer SHOW-BUFFER in other window and execute BODY in it. |
| 593 | Stronger than `save-excursion', weaker than `save-window-excursion'." |
| 594 | (setq show-buffer (car show-buffer)) ; CL style |
| 595 | `(let ((mh-in-show-buffer-saved-window (selected-window))) |
| 596 | (switch-to-buffer-other-window ,show-buffer) |
| 597 | (if mh-bury-show-buffer-flag (bury-buffer (current-buffer))) |
| 598 | (unwind-protect |
| 599 | (progn |
| 600 | ,@body) |
| 601 | (select-window mh-in-show-buffer-saved-window)))) |
| 602 | |
| 603 | (put 'mh-in-show-buffer 'lisp-indent-hook 1) |
| 604 | |
| 605 | (defmacro mh-make-seq (name msgs) |
| 606 | "Create sequence NAME with the given MSGS." |
| 607 | (list 'cons name msgs)) |
| 608 | |
| 609 | (defmacro mh-seq-name (sequence) |
| 610 | "Extract sequence name from the given SEQUENCE." |
| 611 | (list 'car sequence)) |
| 612 | |
| 613 | (defmacro mh-seq-msgs (sequence) |
| 614 | "Extract messages from the given SEQUENCE." |
| 615 | (list 'cdr sequence)) |
| 616 | |
| 617 | (defun mh-recenter (arg) |
| 618 | "Like recenter but with three improvements: |
| 619 | - At the end of the buffer it tries to show fewer empty lines. |
| 620 | - operates only if the current buffer is in the selected window. |
| 621 | (Commands like `save-some-buffers' can make this false.) |
| 622 | - nil ARG means recenter as if prefix argument had been given." |
| 623 | (cond ((not (eq (get-buffer-window (current-buffer)) (selected-window))) |
| 624 | nil) |
| 625 | ((= (point-max) (save-excursion |
| 626 | (forward-line (- (/ (window-height) 2) 2)) |
| 627 | (point))) |
| 628 | (let ((lines-from-end 2)) |
| 629 | (save-excursion |
| 630 | (while (> (point-max) (progn (forward-line) (point))) |
| 631 | (incf lines-from-end))) |
| 632 | (recenter (- lines-from-end)))) |
| 633 | ;; '(4) is the same as C-u prefix argument. |
| 634 | (t (recenter (or arg '(4)))))) |
| 635 | |
| 636 | (defun mh-start-of-uncleaned-message () |
| 637 | "Position uninteresting headers off the top of the window." |
| 638 | (let ((case-fold-search t)) |
| 639 | (re-search-forward |
| 640 | "^To:\\|^Cc:\\|^From:\\|^Subject:\\|^Date:" nil t) |
| 641 | (beginning-of-line) |
| 642 | (mh-recenter 0))) |
| 643 | |
| 644 | (defun mh-invalidate-show-buffer () |
| 645 | "Invalidate the show buffer so we must update it to use it." |
| 646 | (if (get-buffer mh-show-buffer) |
| 647 | (save-excursion |
| 648 | (set-buffer mh-show-buffer) |
| 649 | (mh-unvisit-file)))) |
| 650 | |
| 651 | (defun mh-unvisit-file () |
| 652 | "Separate current buffer from the message file it was visiting." |
| 653 | (or (not (buffer-modified-p)) |
| 654 | (null buffer-file-name) ;we've been here before |
| 655 | (yes-or-no-p (format "Message %s modified; flush changes? " |
| 656 | (file-name-nondirectory buffer-file-name))) |
| 657 | (error "Flushing changes not confirmed")) |
| 658 | (clear-visited-file-modtime) |
| 659 | (unlock-buffer) |
| 660 | (setq buffer-file-name nil)) |
| 661 | |
| 662 | ;;;###mh-autoload |
| 663 | (defun mh-get-msg-num (error-if-no-message) |
| 664 | "Return the message number of the displayed message. |
| 665 | If the argument ERROR-IF-NO-MESSAGE is non-nil, then complain if the cursor is |
| 666 | not pointing to a message." |
| 667 | (save-excursion |
| 668 | (beginning-of-line) |
| 669 | (cond ((looking-at mh-scan-msg-number-regexp) |
| 670 | (string-to-int (buffer-substring (match-beginning 1) |
| 671 | (match-end 1)))) |
| 672 | (error-if-no-message |
| 673 | (error "Cursor not pointing to message")) |
| 674 | (t nil)))) |
| 675 | |
| 676 | (defun mh-folder-name-p (name) |
| 677 | "Return non-nil if NAME is the name of a folder. |
| 678 | A name (a string or symbol) can be a folder name if it begins with \"+\"." |
| 679 | (if (symbolp name) |
| 680 | (eq (aref (symbol-name name) 0) ?+) |
| 681 | (and (> (length name) 0) |
| 682 | (eq (aref name 0) ?+)))) |
| 683 | |
| 684 | |
| 685 | (defun mh-expand-file-name (filename &optional default) |
| 686 | "Expand FILENAME like `expand-file-name', but also handle MH folder names. |
| 687 | Any filename that starts with '+' is treated as a folder name. |
| 688 | See `expand-file-name' for description of DEFAULT." |
| 689 | (if (mh-folder-name-p filename) |
| 690 | (expand-file-name (substring filename 1) mh-user-path) |
| 691 | (expand-file-name filename default))) |
| 692 | |
| 693 | |
| 694 | (defun mh-msg-filename (msg &optional folder) |
| 695 | "Return the file name of MSG in FOLDER (default current folder)." |
| 696 | (expand-file-name (int-to-string msg) |
| 697 | (if folder |
| 698 | (mh-expand-file-name folder) |
| 699 | mh-folder-filename))) |
| 700 | |
| 701 | ;;; Infrastructure to generate show-buffer functions from folder functions |
| 702 | ;;; XEmacs does not have deactivate-mark? What is the equivalent of |
| 703 | ;;; transient-mark-mode for XEmacs? Should we be restoring the mark in the |
| 704 | ;;; folder buffer after the operation has been carried out. |
| 705 | (defmacro mh-defun-show-buffer (function original-function |
| 706 | &optional dont-return) |
| 707 | "Define FUNCTION to run ORIGINAL-FUNCTION in folder buffer. |
| 708 | If the buffer we start in is still visible and DONT-RETURN is nil then switch |
| 709 | to it after that." |
| 710 | `(defun ,function () |
| 711 | ,(format "Calls %s from the message's folder.\n%s\nSee `%s' for more info.\n" |
| 712 | original-function |
| 713 | (if dont-return "" |
| 714 | "When function completes, returns to the show buffer if it is |
| 715 | still visible.\n") |
| 716 | original-function) |
| 717 | (interactive) |
| 718 | (when (buffer-live-p (get-buffer mh-show-folder-buffer)) |
| 719 | (let ((config (current-window-configuration)) |
| 720 | (folder-buffer mh-show-folder-buffer) |
| 721 | (normal-exit nil) |
| 722 | ,@(if dont-return () '((cur-buffer-name (buffer-name))))) |
| 723 | (pop-to-buffer mh-show-folder-buffer nil) |
| 724 | (unless (equal (buffer-name |
| 725 | (window-buffer (frame-first-window (selected-frame)))) |
| 726 | folder-buffer) |
| 727 | (delete-other-windows)) |
| 728 | (mh-goto-cur-msg t) |
| 729 | (and (fboundp 'deactivate-mark) (deactivate-mark)) |
| 730 | (unwind-protect |
| 731 | (prog1 (call-interactively (function ,original-function)) |
| 732 | (setq normal-exit t)) |
| 733 | (and (fboundp 'deactivate-mark) (deactivate-mark)) |
| 734 | (cond ((not normal-exit) |
| 735 | (set-window-configuration config)) |
| 736 | ,(if dont-return |
| 737 | `(t (setq mh-previous-window-config config)) |
| 738 | `((and (get-buffer cur-buffer-name) |
| 739 | (window-live-p (get-buffer-window |
| 740 | (get-buffer cur-buffer-name)))) |
| 741 | (pop-to-buffer (get-buffer cur-buffer-name) nil))))))))) |
| 742 | |
| 743 | ;;; Generate interactive functions for the show buffer from the corresponding |
| 744 | ;;; folder functions. |
| 745 | (mh-defun-show-buffer mh-show-previous-undeleted-msg |
| 746 | mh-previous-undeleted-msg) |
| 747 | (mh-defun-show-buffer mh-show-next-undeleted-msg |
| 748 | mh-next-undeleted-msg) |
| 749 | (mh-defun-show-buffer mh-show-quit mh-quit) |
| 750 | (mh-defun-show-buffer mh-show-delete-msg mh-delete-msg) |
| 751 | (mh-defun-show-buffer mh-show-refile-msg mh-refile-msg) |
| 752 | (mh-defun-show-buffer mh-show-undo mh-undo) |
| 753 | (mh-defun-show-buffer mh-show-execute-commands mh-execute-commands) |
| 754 | (mh-defun-show-buffer mh-show-reply mh-reply t) |
| 755 | (mh-defun-show-buffer mh-show-redistribute mh-redistribute) |
| 756 | (mh-defun-show-buffer mh-show-forward mh-forward t) |
| 757 | (mh-defun-show-buffer mh-show-header-display mh-header-display) |
| 758 | (mh-defun-show-buffer mh-show-refile-or-write-again |
| 759 | mh-refile-or-write-again) |
| 760 | (mh-defun-show-buffer mh-show-show mh-show) |
| 761 | (mh-defun-show-buffer mh-show-write-message-to-file |
| 762 | mh-write-msg-to-file) |
| 763 | (mh-defun-show-buffer mh-show-extract-rejected-mail |
| 764 | mh-extract-rejected-mail t) |
| 765 | (mh-defun-show-buffer mh-show-delete-msg-no-motion |
| 766 | mh-delete-msg-no-motion) |
| 767 | (mh-defun-show-buffer mh-show-first-msg mh-first-msg) |
| 768 | (mh-defun-show-buffer mh-show-last-msg mh-last-msg) |
| 769 | (mh-defun-show-buffer mh-show-copy-msg mh-copy-msg) |
| 770 | (mh-defun-show-buffer mh-show-edit-again mh-edit-again t) |
| 771 | (mh-defun-show-buffer mh-show-goto-msg mh-goto-msg) |
| 772 | (mh-defun-show-buffer mh-show-inc-folder mh-inc-folder) |
| 773 | (mh-defun-show-buffer mh-show-delete-subject-or-thread |
| 774 | mh-delete-subject-or-thread) |
| 775 | (mh-defun-show-buffer mh-show-delete-subject mh-delete-subject) |
| 776 | (mh-defun-show-buffer mh-show-print-msg mh-print-msg) |
| 777 | (mh-defun-show-buffer mh-show-send mh-send t) |
| 778 | (mh-defun-show-buffer mh-show-toggle-showing mh-toggle-showing t) |
| 779 | (mh-defun-show-buffer mh-show-pipe-msg mh-pipe-msg t) |
| 780 | (mh-defun-show-buffer mh-show-sort-folder mh-sort-folder) |
| 781 | (mh-defun-show-buffer mh-show-visit-folder mh-visit-folder t) |
| 782 | (mh-defun-show-buffer mh-show-rescan-folder mh-rescan-folder) |
| 783 | (mh-defun-show-buffer mh-show-pack-folder mh-pack-folder) |
| 784 | (mh-defun-show-buffer mh-show-kill-folder mh-kill-folder t) |
| 785 | (mh-defun-show-buffer mh-show-list-folders mh-list-folders t) |
| 786 | (mh-defun-show-buffer mh-show-search-folder mh-search-folder t) |
| 787 | (mh-defun-show-buffer mh-show-undo-folder mh-undo-folder) |
| 788 | (mh-defun-show-buffer mh-show-delete-msg-from-seq |
| 789 | mh-delete-msg-from-seq) |
| 790 | (mh-defun-show-buffer mh-show-delete-seq mh-delete-seq) |
| 791 | (mh-defun-show-buffer mh-show-list-sequences mh-list-sequences) |
| 792 | (mh-defun-show-buffer mh-show-narrow-to-seq mh-narrow-to-seq) |
| 793 | (mh-defun-show-buffer mh-show-put-msg-in-seq mh-put-msg-in-seq) |
| 794 | (mh-defun-show-buffer mh-show-msg-is-in-seq mh-msg-is-in-seq) |
| 795 | (mh-defun-show-buffer mh-show-widen mh-widen) |
| 796 | (mh-defun-show-buffer mh-show-narrow-to-subject |
| 797 | mh-narrow-to-subject) |
| 798 | (mh-defun-show-buffer mh-show-store-msg mh-store-msg) |
| 799 | (mh-defun-show-buffer mh-show-page-digest mh-page-digest) |
| 800 | (mh-defun-show-buffer mh-show-page-digest-backwards |
| 801 | mh-page-digest-backwards) |
| 802 | (mh-defun-show-buffer mh-show-burst-digest mh-burst-digest) |
| 803 | (mh-defun-show-buffer mh-show-page-msg mh-page-msg) |
| 804 | (mh-defun-show-buffer mh-show-previous-page mh-previous-page) |
| 805 | (mh-defun-show-buffer mh-show-modify mh-modify t) |
| 806 | (mh-defun-show-buffer mh-show-next-button mh-next-button) |
| 807 | (mh-defun-show-buffer mh-show-prev-button mh-prev-button) |
| 808 | (mh-defun-show-buffer mh-show-toggle-mime-part mh-folder-toggle-mime-part) |
| 809 | (mh-defun-show-buffer mh-show-save-mime-part mh-folder-save-mime-part) |
| 810 | (mh-defun-show-buffer mh-show-inline-mime-part mh-folder-inline-mime-part) |
| 811 | (mh-defun-show-buffer mh-show-toggle-threads mh-toggle-threads) |
| 812 | (mh-defun-show-buffer mh-show-thread-delete mh-thread-delete) |
| 813 | (mh-defun-show-buffer mh-show-thread-refile mh-thread-refile) |
| 814 | (mh-defun-show-buffer mh-show-update-sequences mh-update-sequences) |
| 815 | (mh-defun-show-buffer mh-show-next-unread-msg mh-next-unread-msg) |
| 816 | (mh-defun-show-buffer mh-show-previous-unread-msg mh-previous-unread-msg) |
| 817 | (mh-defun-show-buffer mh-show-thread-ancestor mh-thread-ancestor) |
| 818 | (mh-defun-show-buffer mh-show-thread-next-sibling mh-thread-next-sibling) |
| 819 | (mh-defun-show-buffer mh-show-thread-previous-sibling |
| 820 | mh-thread-previous-sibling) |
| 821 | (mh-defun-show-buffer mh-show-index-visit-folder mh-index-visit-folder t) |
| 822 | |
| 823 | ;;; Populate mh-show-mode-map |
| 824 | (gnus-define-keys mh-show-mode-map |
| 825 | " " mh-show-page-msg |
| 826 | "!" mh-show-refile-or-write-again |
| 827 | "," mh-show-header-display |
| 828 | "." mh-show-show |
| 829 | ">" mh-show-write-message-to-file |
| 830 | "?" mh-help |
| 831 | "E" mh-show-extract-rejected-mail |
| 832 | "M" mh-show-modify |
| 833 | "\177" mh-show-previous-page |
| 834 | "\C-d" mh-show-delete-msg-no-motion |
| 835 | "\t" mh-show-next-button |
| 836 | [backtab] mh-show-prev-button |
| 837 | "\M-\t" mh-show-prev-button |
| 838 | "\ed" mh-show-redistribute |
| 839 | "^" mh-show-refile-msg |
| 840 | "c" mh-show-copy-msg |
| 841 | "d" mh-show-delete-msg |
| 842 | "e" mh-show-edit-again |
| 843 | "f" mh-show-forward |
| 844 | "g" mh-show-goto-msg |
| 845 | "i" mh-show-inc-folder |
| 846 | "k" mh-show-delete-subject-or-thread |
| 847 | "l" mh-show-print-msg |
| 848 | "m" mh-show-send |
| 849 | "n" mh-show-next-undeleted-msg |
| 850 | "\M-n" mh-show-next-unread-msg |
| 851 | "o" mh-show-refile-msg |
| 852 | "p" mh-show-previous-undeleted-msg |
| 853 | "\M-p" mh-show-previous-unread-msg |
| 854 | "q" mh-show-quit |
| 855 | "r" mh-show-reply |
| 856 | "s" mh-show-send |
| 857 | "t" mh-show-toggle-showing |
| 858 | "u" mh-show-undo |
| 859 | "x" mh-show-execute-commands |
| 860 | "v" mh-show-index-visit-folder |
| 861 | "|" mh-show-pipe-msg) |
| 862 | |
| 863 | (gnus-define-keys (mh-show-folder-map "F" mh-show-mode-map) |
| 864 | "?" mh-prefix-help |
| 865 | "S" mh-show-sort-folder |
| 866 | "f" mh-show-visit-folder |
| 867 | "i" mh-index-search |
| 868 | "k" mh-show-kill-folder |
| 869 | "l" mh-show-list-folders |
| 870 | "o" mh-show-visit-folder |
| 871 | "r" mh-show-rescan-folder |
| 872 | "s" mh-show-search-folder |
| 873 | "t" mh-show-toggle-threads |
| 874 | "u" mh-show-undo-folder |
| 875 | "v" mh-show-visit-folder) |
| 876 | |
| 877 | (gnus-define-keys (mh-show-sequence-map "S" mh-show-mode-map) |
| 878 | "?" mh-prefix-help |
| 879 | "d" mh-show-delete-msg-from-seq |
| 880 | "k" mh-show-delete-seq |
| 881 | "l" mh-show-list-sequences |
| 882 | "n" mh-show-narrow-to-seq |
| 883 | "p" mh-show-put-msg-in-seq |
| 884 | "s" mh-show-msg-is-in-seq |
| 885 | "w" mh-show-widen) |
| 886 | |
| 887 | (gnus-define-keys (mh-show-thread-map "T" mh-show-mode-map) |
| 888 | "?" mh-prefix-help |
| 889 | "u" mh-show-thread-ancestor |
| 890 | "p" mh-show-thread-previous-sibling |
| 891 | "n" mh-show-thread-next-sibling |
| 892 | "t" mh-show-toggle-threads |
| 893 | "d" mh-show-thread-delete |
| 894 | "o" mh-show-thread-refile) |
| 895 | |
| 896 | (gnus-define-keys (mh-show-limit-map "/" mh-show-mode-map) |
| 897 | "?" mh-prefix-help |
| 898 | "s" mh-show-narrow-to-subject |
| 899 | "w" mh-show-widen) |
| 900 | |
| 901 | (gnus-define-keys (mh-show-extract-map "X" mh-show-mode-map) |
| 902 | "?" mh-prefix-help |
| 903 | "s" mh-show-store-msg |
| 904 | "u" mh-show-store-msg) |
| 905 | |
| 906 | ;; Untested... |
| 907 | (gnus-define-keys (mh-show-digest-map "D" mh-show-mode-map) |
| 908 | "?" mh-prefix-help |
| 909 | " " mh-show-page-digest |
| 910 | "\177" mh-show-page-digest-backwards |
| 911 | "b" mh-show-burst-digest) |
| 912 | |
| 913 | (gnus-define-keys (mh-show-mime-map "K" mh-show-mode-map) |
| 914 | "?" mh-prefix-help |
| 915 | "a" mh-mime-save-parts |
| 916 | "v" mh-show-toggle-mime-part |
| 917 | "o" mh-show-save-mime-part |
| 918 | "i" mh-show-inline-mime-part |
| 919 | "\t" mh-show-next-button |
| 920 | [backtab] mh-show-prev-button |
| 921 | "\M-\t" mh-show-prev-button) |
| 922 | |
| 923 | (easy-menu-define |
| 924 | mh-show-sequence-menu mh-show-mode-map "Menu for MH-E folder-sequence." |
| 925 | '("Sequence" |
| 926 | ["Add Message to Sequence..." mh-show-put-msg-in-seq t] |
| 927 | ["List Sequences for Message" mh-show-msg-is-in-seq t] |
| 928 | ["Delete Message from Sequence..." mh-show-delete-msg-from-seq t] |
| 929 | ["List Sequences in Folder..." mh-show-list-sequences t] |
| 930 | ["Delete Sequence..." mh-show-delete-seq t] |
| 931 | ["Narrow to Sequence..." mh-show-narrow-to-seq t] |
| 932 | ["Widen from Sequence" mh-show-widen t] |
| 933 | "--" |
| 934 | ["Narrow to Subject Sequence" mh-show-narrow-to-subject t] |
| 935 | ["Delete Rest of Same Subject" mh-show-delete-subject t] |
| 936 | "--" |
| 937 | ["Push State Out to MH" mh-show-update-sequences t])) |
| 938 | |
| 939 | (easy-menu-define |
| 940 | mh-show-message-menu mh-show-mode-map "Menu for MH-E folder-message." |
| 941 | '("Message" |
| 942 | ["Show Message" mh-show-show t] |
| 943 | ["Show Message with Header" mh-show-header-display t] |
| 944 | ["Next Message" mh-show-next-undeleted-msg t] |
| 945 | ["Previous Message" mh-show-previous-undeleted-msg t] |
| 946 | ["Go to First Message" mh-show-first-msg t] |
| 947 | ["Go to Last Message" mh-show-last-msg t] |
| 948 | ["Go to Message by Number..." mh-show-goto-msg t] |
| 949 | ["Modify Message" mh-show-modify t] |
| 950 | ["Delete Message" mh-show-delete-msg t] |
| 951 | ["Refile Message" mh-show-refile-msg t] |
| 952 | ["Undo Delete/Refile" mh-show-undo t] |
| 953 | ["Process Delete/Refile" mh-show-execute-commands t] |
| 954 | "--" |
| 955 | ["Compose a New Message" mh-send t] |
| 956 | ["Reply to Message..." mh-show-reply t] |
| 957 | ["Forward Message..." mh-show-forward t] |
| 958 | ["Redistribute Message..." mh-show-redistribute t] |
| 959 | ["Edit Message Again" mh-show-edit-again t] |
| 960 | ["Re-edit a Bounced Message" mh-show-extract-rejected-mail t] |
| 961 | "--" |
| 962 | ["Copy Message to Folder..." mh-show-copy-msg t] |
| 963 | ["Print Message" mh-show-print-msg t] |
| 964 | ["Write Message to File..." mh-show-write-msg-to-file t] |
| 965 | ["Pipe Message to Command..." mh-show-pipe-msg t] |
| 966 | ["Unpack Uuencoded Message..." mh-show-store-msg t] |
| 967 | ["Burst Digest Message" mh-show-burst-digest t])) |
| 968 | |
| 969 | (easy-menu-define |
| 970 | mh-show-folder-menu mh-show-mode-map "Menu for MH-E folder." |
| 971 | '("Folder" |
| 972 | ["Incorporate New Mail" mh-show-inc-folder t] |
| 973 | ["Toggle Show/Folder" mh-show-toggle-showing t] |
| 974 | ["Execute Delete/Refile" mh-show-execute-commands t] |
| 975 | ["Rescan Folder" mh-show-rescan-folder t] |
| 976 | ["Thread Folder" mh-show-toggle-threads t] |
| 977 | ["Pack Folder" mh-show-pack-folder t] |
| 978 | ["Sort Folder" mh-show-sort-folder t] |
| 979 | "--" |
| 980 | ["List Folders" mh-show-list-folders t] |
| 981 | ["Visit a Folder..." mh-show-visit-folder t] |
| 982 | ["Search a Folder..." mh-show-search-folder t] |
| 983 | ["Indexed Search..." mh-index-search t] |
| 984 | "--" |
| 985 | ["Quit MH-E" mh-quit t])) |
| 986 | |
| 987 | |
| 988 | ;;; Ensure new buffers won't get this mode if default-major-mode is nil. |
| 989 | (put 'mh-show-mode 'mode-class 'special) |
| 990 | |
| 991 | (define-derived-mode mh-show-mode text-mode "MH-Show" |
| 992 | "Major mode for showing messages in MH-E.\\<mh-show-mode-map> |
| 993 | The value of `mh-show-mode-hook' is a list of functions to |
| 994 | be called, with no arguments, upon entry to this mode." |
| 995 | (set (make-local-variable 'mail-header-separator) mh-mail-header-separator) |
| 996 | (setq paragraph-start (default-value 'paragraph-start)) |
| 997 | (mh-show-unquote-From) |
| 998 | (mh-show-xface) |
| 999 | (mh-show-addr) |
| 1000 | (make-local-variable 'font-lock-defaults) |
| 1001 | ;;(set (make-local-variable 'font-lock-support-mode) nil) |
| 1002 | (cond |
| 1003 | ((equal mh-highlight-citation-p 'font-lock) |
| 1004 | (setq font-lock-defaults '(mh-show-font-lock-keywords-with-cite t))) |
| 1005 | ((equal mh-highlight-citation-p 'gnus) |
| 1006 | (setq font-lock-defaults '((mh-show-font-lock-keywords) |
| 1007 | t nil nil nil |
| 1008 | (font-lock-fontify-region-function |
| 1009 | . mh-show-font-lock-fontify-region))) |
| 1010 | (mh-gnus-article-highlight-citation)) |
| 1011 | (t |
| 1012 | (setq font-lock-defaults '(mh-show-font-lock-keywords t)))) |
| 1013 | (if (and mh-xemacs-flag |
| 1014 | font-lock-auto-fontify) |
| 1015 | (turn-on-font-lock)) |
| 1016 | (if (and (boundp 'tool-bar-mode) tool-bar-mode) |
| 1017 | (set (make-local-variable 'tool-bar-map) mh-show-tool-bar-map)) |
| 1018 | (when mh-decode-mime-flag |
| 1019 | (add-hook 'kill-buffer-hook 'mh-mime-cleanup nil t)) |
| 1020 | (easy-menu-add mh-show-sequence-menu) |
| 1021 | (easy-menu-add mh-show-message-menu) |
| 1022 | (easy-menu-add mh-show-folder-menu) |
| 1023 | (make-local-variable 'mh-show-folder-buffer) |
| 1024 | (buffer-disable-undo) |
| 1025 | (setq buffer-read-only t) |
| 1026 | (use-local-map mh-show-mode-map) |
| 1027 | (run-hooks 'mh-show-mode-hook)) |
| 1028 | |
| 1029 | (defun mh-show-addr () |
| 1030 | "Use `goto-address'." |
| 1031 | (when mh-show-use-goto-addr-flag |
| 1032 | (if (not (featurep 'goto-addr)) |
| 1033 | (load "goto-addr" t t)) |
| 1034 | (if (fboundp 'goto-address) |
| 1035 | (goto-address)))) |
| 1036 | |
| 1037 | (defvar mh-show-xface-function |
| 1038 | (cond ((and mh-xemacs-flag (locate-library "x-face")) |
| 1039 | (load "x-face" t t) |
| 1040 | (if (fboundp 'x-face-xmas-wl-display-x-face) |
| 1041 | #'x-face-xmas-wl-display-x-face |
| 1042 | #'ignore)) |
| 1043 | ((and (not mh-xemacs-flag) (>= emacs-major-version 21)) |
| 1044 | (load "x-face-e21" t t) |
| 1045 | (if (fboundp 'x-face-decode-message-header) |
| 1046 | #'x-face-decode-message-header |
| 1047 | #'ignore)) |
| 1048 | (t #'ignore)) |
| 1049 | "Determine at run time what function should be called to display X-Face.") |
| 1050 | |
| 1051 | (defun mh-show-xface () |
| 1052 | "Display X-Face." |
| 1053 | (when (and mh-show-use-xface-flag |
| 1054 | (or mh-decode-mime-flag mhl-formfile |
| 1055 | mh-clean-message-header-flag)) |
| 1056 | (funcall mh-show-xface-function))) |
| 1057 | |
| 1058 | (defun mh-maybe-show (&optional msg) |
| 1059 | "Display message at cursor, but only if in show mode. |
| 1060 | If optional arg MSG is non-nil, display that message instead." |
| 1061 | (if mh-showing-mode (mh-show msg))) |
| 1062 | |
| 1063 | (defun mh-show (&optional message) |
| 1064 | "Show message at cursor. |
| 1065 | If optional argument MESSAGE is non-nil, display that message instead. |
| 1066 | Force a two-window display with the folder window on top (size |
| 1067 | `mh-summary-height') and the show buffer below it. |
| 1068 | If the message is already visible, display the start of the message. |
| 1069 | |
| 1070 | Display of the message is controlled by setting the variables |
| 1071 | `mh-clean-message-header-flag' and `mhl-formfile'. The default behavior is |
| 1072 | to scroll uninteresting headers off the top of the window. |
| 1073 | Type \"\\[mh-header-display]\" to see the message with all its headers." |
| 1074 | (interactive) |
| 1075 | (and mh-showing-with-headers |
| 1076 | (or mhl-formfile mh-clean-message-header-flag) |
| 1077 | (mh-invalidate-show-buffer)) |
| 1078 | (mh-show-msg message)) |
| 1079 | |
| 1080 | (defun mh-show-mouse (EVENT) |
| 1081 | "Move point to mouse EVENT and show message." |
| 1082 | (interactive "e") |
| 1083 | (mouse-set-point EVENT) |
| 1084 | (mh-show)) |
| 1085 | |
| 1086 | (defun mh-show-msg (msg) |
| 1087 | "Show MSG. |
| 1088 | The value of `mh-show-hook' is a list of functions to be called, with no |
| 1089 | arguments, after the message has been displayed." |
| 1090 | (if (not msg) |
| 1091 | (setq msg (mh-get-msg-num t))) |
| 1092 | (mh-showing-mode t) |
| 1093 | (setq mh-page-to-next-msg-flag nil) |
| 1094 | (let ((folder mh-current-folder) |
| 1095 | (clean-message-header mh-clean-message-header-flag) |
| 1096 | (show-window (get-buffer-window mh-show-buffer))) |
| 1097 | (if (not (eq (next-window (minibuffer-window)) (selected-window))) |
| 1098 | (delete-other-windows)) ; force ourself to the top window |
| 1099 | (mh-in-show-buffer (mh-show-buffer) |
| 1100 | (if (and show-window |
| 1101 | (equal (mh-msg-filename msg folder) buffer-file-name)) |
| 1102 | (progn ;just back up to start |
| 1103 | (goto-char (point-min)) |
| 1104 | (if (not clean-message-header) |
| 1105 | (mh-start-of-uncleaned-message))) |
| 1106 | (mh-display-msg msg folder)))) |
| 1107 | (if (not (= (1+ (window-height)) (frame-height))) ;not horizontally split |
| 1108 | (shrink-window (- (window-height) mh-summary-height))) |
| 1109 | (mh-recenter nil) |
| 1110 | (if (not (memq msg mh-seen-list)) |
| 1111 | (setq mh-seen-list (cons msg mh-seen-list))) |
| 1112 | (when mh-update-sequences-after-mh-show-flag |
| 1113 | (mh-update-sequences)) |
| 1114 | (run-hooks 'mh-show-hook)) |
| 1115 | |
| 1116 | (defun mh-modify (&optional message) |
| 1117 | "Edit message at cursor. |
| 1118 | If optional argument MESSAGE is non-nil, edit that message instead. |
| 1119 | Force a two-window display with the folder window on top (size |
| 1120 | `mh-summary-height') and the message editing buffer below it. |
| 1121 | |
| 1122 | The message is displayed in raw form." |
| 1123 | (interactive) |
| 1124 | (let* ((message (or message (mh-get-msg-num t))) |
| 1125 | (msg-filename (mh-msg-filename message)) |
| 1126 | edit-buffer) |
| 1127 | (when (not (file-exists-p msg-filename)) |
| 1128 | (error "Message %d does not exist" message)) |
| 1129 | |
| 1130 | ;; Invalidate the show buffer if it is showing the same message that is |
| 1131 | ;; to be edited. |
| 1132 | (when (and (buffer-live-p (get-buffer mh-show-buffer)) |
| 1133 | (equal (save-excursion (set-buffer mh-show-buffer) |
| 1134 | buffer-file-name) |
| 1135 | msg-filename)) |
| 1136 | (mh-invalidate-show-buffer)) |
| 1137 | |
| 1138 | ;; Edit message |
| 1139 | (find-file msg-filename) |
| 1140 | (setq edit-buffer (current-buffer)) |
| 1141 | |
| 1142 | ;; Set buffer properties |
| 1143 | (mh-letter-mode) |
| 1144 | (use-local-map text-mode-map) |
| 1145 | |
| 1146 | ;; Just show the edit buffer... |
| 1147 | (delete-other-windows) |
| 1148 | (switch-to-buffer edit-buffer))) |
| 1149 | |
| 1150 | (defun mh-decode-content-transfer-encoded-message () |
| 1151 | "Run mimencode on message body, if needed." |
| 1152 | (let ((case-fold-search t) |
| 1153 | (header-end (mail-header-end))) |
| 1154 | (goto-char (point-min)) |
| 1155 | (when (re-search-forward "^content-transfer-encoding: " header-end t) |
| 1156 | (let ((enc (buffer-substring-no-properties (point) (line-end-position))) |
| 1157 | cmdline) |
| 1158 | (setq cmdline |
| 1159 | (cond ((string-match "base64" enc) (list "-u" "-b" "-p")) |
| 1160 | ((string-match "quoted-printable" enc) (list "-u" "-q")) |
| 1161 | (t nil))) |
| 1162 | (when cmdline |
| 1163 | (beginning-of-line) |
| 1164 | (insert "Removed-") |
| 1165 | (setq header-end (mail-header-end)) |
| 1166 | (goto-char (1+ header-end)) |
| 1167 | (apply #'call-process-region (1+ header-end) (point-max) "mimencode" |
| 1168 | t t nil cmdline)))))) |
| 1169 | |
| 1170 | (defun mh-show-unquote-From () |
| 1171 | "Decode >From at beginning of lines for `mh-show-mode'." |
| 1172 | (save-excursion |
| 1173 | (let ((modified (buffer-modified-p)) |
| 1174 | (case-fold-search nil)) |
| 1175 | (goto-char (mail-header-end)) |
| 1176 | (while (re-search-forward "^>From" nil t) |
| 1177 | (replace-match "From")) |
| 1178 | (set-buffer-modified-p modified)))) |
| 1179 | |
| 1180 | (defun mh-msg-folder (folder-name) |
| 1181 | "Return the name of the buffer for FOLDER-NAME." |
| 1182 | folder-name) |
| 1183 | |
| 1184 | (defun mh-display-msg (msg-num folder-name) |
| 1185 | "Display MSG-NUM of FOLDER-NAME. |
| 1186 | Sets the current buffer to the show buffer." |
| 1187 | (let ((folder (mh-msg-folder folder-name))) |
| 1188 | (set-buffer folder) |
| 1189 | ;; When Gnus uses external displayers it has to keep handles longer. So |
| 1190 | ;; we will delete these handles when mh-quit is called on the folder. It |
| 1191 | ;; would be nicer if there are weak pointers in emacs lisp, then we could |
| 1192 | ;; get the garbage collector to do this for us. |
| 1193 | (unless (mh-buffer-data) |
| 1194 | (setf (mh-buffer-data) (mh-make-buffer-data))) |
| 1195 | ;; Bind variables in folder buffer in case they are local |
| 1196 | (let ((formfile mhl-formfile) |
| 1197 | (clean-message-header mh-clean-message-header-flag) |
| 1198 | (invisible-headers mh-invisible-headers) |
| 1199 | (visible-headers mh-visible-headers) |
| 1200 | (msg-filename (mh-msg-filename msg-num folder-name)) |
| 1201 | (show-buffer mh-show-buffer) |
| 1202 | (mm-inline-media-tests mh-mm-inline-media-tests)) |
| 1203 | (if (not (file-exists-p msg-filename)) |
| 1204 | (error "Message %d does not exist" msg-num)) |
| 1205 | (if (and (> mh-show-maximum-size 0) |
| 1206 | (> (elt (file-attributes msg-filename) 7) |
| 1207 | mh-show-maximum-size) |
| 1208 | (not (y-or-n-p |
| 1209 | (format |
| 1210 | "Message %d (%d bytes) exceeds %d bytes. Display it? " |
| 1211 | msg-num (elt (file-attributes msg-filename) 7) |
| 1212 | mh-show-maximum-size)))) |
| 1213 | (error "Message %d not displayed" msg-num)) |
| 1214 | (set-buffer show-buffer) |
| 1215 | (cond ((not (equal msg-filename buffer-file-name)) |
| 1216 | (mh-unvisit-file) |
| 1217 | (setq buffer-read-only nil) |
| 1218 | (erase-buffer) |
| 1219 | ;; Changing contents, so this hook needs to be reinitialized. |
| 1220 | ;; pgp.el uses this. |
| 1221 | (if (boundp 'write-contents-hooks) ;Emacs 19 |
| 1222 | (kill-local-variable 'write-contents-hooks)) |
| 1223 | (if formfile |
| 1224 | (mh-exec-lib-cmd-output "mhl" "-nobell" "-noclear" |
| 1225 | (if (stringp formfile) |
| 1226 | (list "-form" formfile)) |
| 1227 | msg-filename) |
| 1228 | (insert-file-contents-literally msg-filename)) |
| 1229 | (if mh-decode-content-transfer-encoded-message-flag |
| 1230 | (mh-decode-content-transfer-encoded-message)) |
| 1231 | ;; Cleanup old mime handles |
| 1232 | (mh-mime-cleanup) |
| 1233 | ;; Use mm to display buffer |
| 1234 | (when (and mh-decode-mime-flag (not formfile)) |
| 1235 | (mh-add-missing-mime-version-header) |
| 1236 | (setf (mh-buffer-data) (mh-make-buffer-data)) |
| 1237 | (mh-mime-display)) |
| 1238 | ;; Header cleanup |
| 1239 | (goto-char (point-min)) |
| 1240 | (cond (clean-message-header |
| 1241 | (mh-clean-msg-header (point-min) |
| 1242 | invisible-headers |
| 1243 | visible-headers) |
| 1244 | (goto-char (point-min))) |
| 1245 | (t |
| 1246 | (mh-start-of-uncleaned-message))) |
| 1247 | ;; the parts of visiting we want to do (no locking) |
| 1248 | (or (eq buffer-undo-list t) ;don't save undo info for prev msgs |
| 1249 | (setq buffer-undo-list nil)) |
| 1250 | (set-buffer-auto-saved) |
| 1251 | ;; the parts of set-visited-file-name we want to do (no locking) |
| 1252 | (setq buffer-file-name msg-filename) |
| 1253 | (setq buffer-backed-up nil) |
| 1254 | (auto-save-mode 1) |
| 1255 | (set-mark nil) |
| 1256 | (mh-show-mode) |
| 1257 | (unwind-protect |
| 1258 | (when (and mh-decode-mime-flag (not formfile)) |
| 1259 | (setq buffer-read-only nil) |
| 1260 | (mh-display-smileys) |
| 1261 | (mh-display-emphasis)) |
| 1262 | (setq buffer-read-only t)) |
| 1263 | (set-buffer-modified-p nil) |
| 1264 | (setq mh-show-folder-buffer folder) |
| 1265 | (setq mode-line-buffer-identification |
| 1266 | (list (format mh-show-buffer-mode-line-buffer-id |
| 1267 | folder-name msg-num))) |
| 1268 | (mh-logo-display) |
| 1269 | (set-buffer folder) |
| 1270 | (setq mh-showing-with-headers nil)))))) |
| 1271 | |
| 1272 | (defun mh-clean-msg-header (start invisible-headers visible-headers) |
| 1273 | "Flush extraneous lines in message header. |
| 1274 | Header is cleaned from START to the end of the message header. |
| 1275 | INVISIBLE-HEADERS contains a regular expression specifying lines to delete |
| 1276 | from the header. VISIBLE-HEADERS contains a regular expression specifying the |
| 1277 | lines to display. INVISIBLE-HEADERS is ignored if VISIBLE-HEADERS is non-nil." |
| 1278 | (let ((case-fold-search t) |
| 1279 | (after-change-functions nil)) ;Work around emacs-20 font-lock bug |
| 1280 | ;causing an endless loop. |
| 1281 | (save-restriction |
| 1282 | (goto-char start) |
| 1283 | (if (search-forward "\n\n" nil 'move) |
| 1284 | (backward-char 1)) |
| 1285 | (narrow-to-region start (point)) |
| 1286 | (goto-char (point-min)) |
| 1287 | (if visible-headers |
| 1288 | (while (< (point) (point-max)) |
| 1289 | (cond ((looking-at visible-headers) |
| 1290 | (forward-line 1) |
| 1291 | (while (looking-at "[ \t]") (forward-line 1))) |
| 1292 | (t |
| 1293 | (mh-delete-line 1) |
| 1294 | (while (looking-at "[ \t]") |
| 1295 | (mh-delete-line 1))))) |
| 1296 | (while (re-search-forward invisible-headers nil t) |
| 1297 | (beginning-of-line) |
| 1298 | (mh-delete-line 1) |
| 1299 | (while (looking-at "[ \t]") |
| 1300 | (mh-delete-line 1)))) |
| 1301 | (unlock-buffer)))) |
| 1302 | |
| 1303 | (defun mh-delete-line (lines) |
| 1304 | "Delete the next LINES lines." |
| 1305 | (delete-region (point) (progn (forward-line lines) (point)))) |
| 1306 | |
| 1307 | (defun mh-notate (msg notation offset) |
| 1308 | "Mark MSG with the character NOTATION at position OFFSET. |
| 1309 | Null MSG means the message at cursor." |
| 1310 | (save-excursion |
| 1311 | (if (or (null msg) |
| 1312 | (mh-goto-msg msg t t)) |
| 1313 | (with-mh-folder-updating (t) |
| 1314 | (beginning-of-line) |
| 1315 | (forward-char offset) |
| 1316 | (delete-char 1) |
| 1317 | (insert notation))))) |
| 1318 | |
| 1319 | (defun mh-find-msg-get-num (step) |
| 1320 | "Return the message number of the message nearest the cursor. |
| 1321 | Jumps over non-message lines, such as inc errors. |
| 1322 | If we have to search, STEP tells whether to search forward or backward." |
| 1323 | (or (mh-get-msg-num nil) |
| 1324 | (let ((msg-num nil) |
| 1325 | (nreverses 0)) |
| 1326 | (while (and (not msg-num) |
| 1327 | (< nreverses 2)) |
| 1328 | (cond ((eobp) |
| 1329 | (setq step -1) |
| 1330 | (setq nreverses (1+ nreverses))) |
| 1331 | ((bobp) |
| 1332 | (setq step 1) |
| 1333 | (setq nreverses (1+ nreverses)))) |
| 1334 | (forward-line step) |
| 1335 | (setq msg-num (mh-get-msg-num nil))) |
| 1336 | msg-num))) |
| 1337 | |
| 1338 | (defun mh-goto-msg (number &optional no-error-if-no-message dont-show) |
| 1339 | "Position the cursor at message NUMBER. |
| 1340 | Optional non-nil second argument NO-ERROR-IF-NO-MESSAGE means return nil |
| 1341 | instead of signaling an error if message does not exist; in this case, the |
| 1342 | cursor is positioned near where the message would have been. |
| 1343 | Non-nil third argument DONT-SHOW means not to show the message." |
| 1344 | (interactive "NGo to message: ") |
| 1345 | (setq number (prefix-numeric-value number)) |
| 1346 | (let ((point (point)) |
| 1347 | (return-value t)) |
| 1348 | (goto-char (point-min)) |
| 1349 | (unless (re-search-forward (format "^[ ]*%s[^0-9]+" number) nil t) |
| 1350 | (goto-char point) |
| 1351 | (unless no-error-if-no-message |
| 1352 | (error "No message %d" number)) |
| 1353 | (setq return-value nil)) |
| 1354 | (beginning-of-line) |
| 1355 | (or dont-show (not return-value) (mh-maybe-show number)) |
| 1356 | return-value)) |
| 1357 | |
| 1358 | (defun mh-msg-search-pat (n) |
| 1359 | "Return a search pattern for message N in the scan listing." |
| 1360 | (format mh-scan-msg-search-regexp n)) |
| 1361 | |
| 1362 | (defun mh-get-profile-field (field) |
| 1363 | "Find and return the value of FIELD in the current buffer. |
| 1364 | Returns nil if the field is not in the buffer." |
| 1365 | (let ((case-fold-search t)) |
| 1366 | (goto-char (point-min)) |
| 1367 | (cond ((not (re-search-forward (format "^%s" field) nil t)) nil) |
| 1368 | ((looking-at "[\t ]*$") nil) |
| 1369 | (t |
| 1370 | (re-search-forward "[\t ]*\\([^\t \n].*\\)$" nil t) |
| 1371 | (let ((start (match-beginning 1))) |
| 1372 | (end-of-line) |
| 1373 | (buffer-substring start (point))))))) |
| 1374 | |
| 1375 | (defvar mail-user-agent) |
| 1376 | (defvar read-mail-command) |
| 1377 | |
| 1378 | (defvar mh-find-path-run nil |
| 1379 | "Non-nil if `mh-find-path' has been run already.") |
| 1380 | |
| 1381 | (defun mh-find-path () |
| 1382 | "Set `mh-progs', `mh-lib', and `mh-lib-progs' variables. |
| 1383 | Set `mh-user-path', `mh-draft-folder', `mh-unseen-seq', `mh-previous-seq', |
| 1384 | `mh-inbox' from user's MH profile. |
| 1385 | The value of `mh-find-path-hook' is a list of functions to be called, with no |
| 1386 | arguments, after these variable have been set." |
| 1387 | (mh-find-progs) |
| 1388 | (unless mh-find-path-run |
| 1389 | (setq mh-find-path-run t) |
| 1390 | (setq read-mail-command 'mh-rmail) |
| 1391 | (setq mail-user-agent 'mh-e-user-agent)) |
| 1392 | (save-excursion |
| 1393 | ;; Be sure profile is fully expanded before switching buffers |
| 1394 | (let ((profile (expand-file-name (or (getenv "MH") "~/.mh_profile")))) |
| 1395 | (set-buffer (get-buffer-create mh-temp-buffer)) |
| 1396 | (setq buffer-offer-save nil) ;for people who set default to t |
| 1397 | (erase-buffer) |
| 1398 | (condition-case err |
| 1399 | (insert-file-contents profile) |
| 1400 | (file-error |
| 1401 | (mh-install profile err))) |
| 1402 | (setq mh-user-path (mh-get-profile-field "Path:")) |
| 1403 | (if (not mh-user-path) |
| 1404 | (setq mh-user-path "Mail")) |
| 1405 | (setq mh-user-path |
| 1406 | (file-name-as-directory |
| 1407 | (expand-file-name mh-user-path (expand-file-name "~")))) |
| 1408 | (setq mh-draft-folder (mh-get-profile-field "Draft-Folder:")) |
| 1409 | (if mh-draft-folder |
| 1410 | (progn |
| 1411 | (if (not (mh-folder-name-p mh-draft-folder)) |
| 1412 | (setq mh-draft-folder (format "+%s" mh-draft-folder))) |
| 1413 | (if (not (file-exists-p (mh-expand-file-name mh-draft-folder))) |
| 1414 | (error "Draft folder \"%s\" not found. Create it and try again" |
| 1415 | (mh-expand-file-name mh-draft-folder))))) |
| 1416 | (setq mh-inbox (mh-get-profile-field "Inbox:")) |
| 1417 | (cond ((not mh-inbox) |
| 1418 | (setq mh-inbox "+inbox")) |
| 1419 | ((not (mh-folder-name-p mh-inbox)) |
| 1420 | (setq mh-inbox (format "+%s" mh-inbox)))) |
| 1421 | (setq mh-unseen-seq (mh-get-profile-field "Unseen-Sequence:")) |
| 1422 | (if mh-unseen-seq |
| 1423 | (setq mh-unseen-seq (intern mh-unseen-seq)) |
| 1424 | (setq mh-unseen-seq 'unseen)) ;old MH default? |
| 1425 | (setq mh-previous-seq (mh-get-profile-field "Previous-Sequence:")) |
| 1426 | (if mh-previous-seq |
| 1427 | (setq mh-previous-seq (intern mh-previous-seq))) |
| 1428 | (run-hooks 'mh-find-path-hook)))) |
| 1429 | |
| 1430 | (defun mh-file-command-p (file) |
| 1431 | "Return t if file FILE is the name of a executable regular file." |
| 1432 | (and (file-regular-p file) (file-executable-p file))) |
| 1433 | |
| 1434 | (defun mh-find-progs () |
| 1435 | "Find the directories for the installed MH/nmh binaries and config files. |
| 1436 | Set the `mh-progs' and `mh-lib', and `mh-lib-progs' variables to the |
| 1437 | directory names and set `mh-nmh-flag' if we detect nmh instead of MH." |
| 1438 | (unless (and mh-progs mh-lib mh-lib-progs) |
| 1439 | (let ((path (or (mh-path-search exec-path "mhparam") |
| 1440 | (mh-path-search '("/usr/local/nmh/bin" ; nmh default |
| 1441 | "/usr/local/bin/mh/" |
| 1442 | "/usr/local/mh/" |
| 1443 | "/usr/bin/mh/" ;Ultrix 4.2, Linux |
| 1444 | "/usr/new/mh/" ;Ultrix <4.2 |
| 1445 | "/usr/contrib/mh/bin/" ;BSDI |
| 1446 | "/usr/pkg/bin/" ; NetBSD |
| 1447 | "/usr/local/bin/" |
| 1448 | ) |
| 1449 | "mhparam")))) |
| 1450 | (if (not path) |
| 1451 | (error "Unable to find the `mhparam' command")) |
| 1452 | (save-excursion |
| 1453 | (let ((tmp-buffer (get-buffer-create mh-temp-buffer))) |
| 1454 | (set-buffer tmp-buffer) |
| 1455 | (unwind-protect |
| 1456 | (progn |
| 1457 | (call-process (expand-file-name "mhparam" path) |
| 1458 | nil '(t nil) nil "libdir" "etcdir") |
| 1459 | (goto-char (point-min)) |
| 1460 | (if (search-forward-regexp "^libdir:\\s-\\(\\S-+\\)\\s-*$" |
| 1461 | nil t) |
| 1462 | (setq mh-lib-progs (match-string 1) |
| 1463 | mh-lib mh-lib-progs |
| 1464 | mh-progs path)) |
| 1465 | (goto-char (point-min)) |
| 1466 | (if (search-forward-regexp "^etcdir:\\s-\\(\\S-+\\)\\s-*$" |
| 1467 | nil t) |
| 1468 | (setq mh-lib (match-string 1) |
| 1469 | mh-nmh-flag t))) |
| 1470 | (kill-buffer tmp-buffer)))) |
| 1471 | (unless (and mh-progs mh-lib mh-lib-progs) |
| 1472 | (error "Unable to determine paths from `mhparam' command"))))) |
| 1473 | |
| 1474 | (defun mh-path-search (path file) |
| 1475 | "Search PATH, a list of directory names, for FILE. |
| 1476 | Returns the element of PATH that contains FILE, or nil if not found." |
| 1477 | (while (and path |
| 1478 | (not (funcall 'mh-file-command-p |
| 1479 | (expand-file-name file (car path))))) |
| 1480 | (setq path (cdr path))) |
| 1481 | (car path)) |
| 1482 | |
| 1483 | (defvar mh-no-install nil) ;do not run install-mh |
| 1484 | |
| 1485 | (defun mh-install (profile error-val) |
| 1486 | "Initialize the MH environment. |
| 1487 | This is called if we fail to read the PROFILE file. ERROR-VAL is the error |
| 1488 | that made this call necessary." |
| 1489 | (if (or (getenv "MH") |
| 1490 | (file-exists-p profile) |
| 1491 | mh-no-install) |
| 1492 | (signal (car error-val) |
| 1493 | (list (format "Cannot read MH profile \"%s\"" profile) |
| 1494 | (car (cdr (cdr error-val)))))) |
| 1495 | ;; The "install-mh" command will output a short note which |
| 1496 | ;; mh-exec-cmd will display to the user. |
| 1497 | ;; The MH 5 version of install-mh might try prompt the user |
| 1498 | ;; for information, which would fail here. |
| 1499 | (mh-exec-cmd (expand-file-name "install-mh" mh-lib-progs) "-auto") |
| 1500 | ;; now try again to read the profile file |
| 1501 | (erase-buffer) |
| 1502 | (condition-case err |
| 1503 | (insert-file-contents profile) |
| 1504 | (file-error |
| 1505 | (signal (car err) ;re-signal with more specific msg |
| 1506 | (list (format "Cannot read MH profile \"%s\"" profile) |
| 1507 | (car (cdr (cdr err)))))))) |
| 1508 | |
| 1509 | (defun mh-set-folder-modified-p (flag) |
| 1510 | "Mark current folder as modified or unmodified according to FLAG." |
| 1511 | (set-buffer-modified-p flag)) |
| 1512 | |
| 1513 | (defun mh-find-seq (name) |
| 1514 | "Return sequence NAME." |
| 1515 | (assoc name mh-seq-list)) |
| 1516 | |
| 1517 | (defun mh-seq-to-msgs (seq) |
| 1518 | "Return a list of the messages in SEQ." |
| 1519 | (mh-seq-msgs (mh-find-seq seq))) |
| 1520 | |
| 1521 | (defun mh-update-scan-format (fmt width) |
| 1522 | "Return a scan format with the (msg) width in the FMT replaced with WIDTH. |
| 1523 | |
| 1524 | The message number width portion of the format is discovered using |
| 1525 | `mh-scan-msg-format-regexp'. Its replacement is controlled with |
| 1526 | `mh-scan-msg-format-string'." |
| 1527 | (or (and |
| 1528 | (string-match mh-scan-msg-format-regexp fmt) |
| 1529 | (let ((begin (match-beginning 1)) |
| 1530 | (end (match-end 1))) |
| 1531 | (concat (substring fmt 0 begin) |
| 1532 | (format mh-scan-msg-format-string width) |
| 1533 | (substring fmt end)))) |
| 1534 | fmt)) |
| 1535 | |
| 1536 | (defun mh-message-number-width (folder) |
| 1537 | "Return the widest message number in this FOLDER." |
| 1538 | (or mh-progs (mh-find-path)) |
| 1539 | (let ((tmp-buffer (get-buffer-create mh-temp-buffer)) |
| 1540 | (width 0)) |
| 1541 | (save-excursion |
| 1542 | (set-buffer tmp-buffer) |
| 1543 | (erase-buffer) |
| 1544 | (apply 'call-process |
| 1545 | (expand-file-name "scan" mh-progs) nil '(t nil) nil |
| 1546 | (list folder "last" "-format" "%(msg)")) |
| 1547 | (goto-char (point-min)) |
| 1548 | (if (re-search-forward mh-scan-msg-number-regexp nil 0 1) |
| 1549 | (setq width (length (buffer-substring |
| 1550 | (match-beginning 1) (match-end 1)))))) |
| 1551 | width)) |
| 1552 | |
| 1553 | (defun mh-add-msgs-to-seq (msgs seq &optional internal-flag dont-annotate-flag) |
| 1554 | "Add MSGS to SEQ. |
| 1555 | Remove duplicates and keep sequence sorted. If optional INTERNAL-FLAG is |
| 1556 | non-nil, do not mark the message in the scan listing or inform MH of the |
| 1557 | addition. |
| 1558 | |
| 1559 | If DONT-ANNOTATE-FLAG is non-nil then the annotations in the folder buffer are |
| 1560 | not updated." |
| 1561 | (let ((entry (mh-find-seq seq))) |
| 1562 | (if (and msgs (atom msgs)) (setq msgs (list msgs))) |
| 1563 | (if (null entry) |
| 1564 | (setq mh-seq-list |
| 1565 | (cons (mh-make-seq seq (mh-canonicalize-sequence msgs)) |
| 1566 | mh-seq-list)) |
| 1567 | (if msgs (setcdr entry (mh-canonicalize-sequence |
| 1568 | (append msgs (mh-seq-msgs entry)))))) |
| 1569 | (cond ((not internal-flag) |
| 1570 | (mh-add-to-sequence seq msgs) |
| 1571 | (unless dont-annotate-flag |
| 1572 | (mh-notate-seq seq mh-note-seq (1+ mh-cmd-note))))))) |
| 1573 | |
| 1574 | (defun mh-canonicalize-sequence (msgs) |
| 1575 | "Sort MSGS in decreasing order and remove duplicates." |
| 1576 | (let* ((sorted-msgs (sort (copy-sequence msgs) '>)) |
| 1577 | (head sorted-msgs)) |
| 1578 | (while (cdr head) |
| 1579 | (if (= (car head) (cadr head)) |
| 1580 | (setcdr head (cddr head)) |
| 1581 | (setq head (cdr head)))) |
| 1582 | sorted-msgs)) |
| 1583 | |
| 1584 | (defvar mh-sub-folders-cache (make-hash-table :test #'equal)) |
| 1585 | |
| 1586 | (defun mh-normalize-folder-name (folder &optional empty-string-okay |
| 1587 | dont-remove-trailing-slash) |
| 1588 | "Normalizes FOLDER name. |
| 1589 | Makes sure that two '/' characters never occur next to each other. Also all |
| 1590 | occurrences of \"..\" and \".\" are suitably processed. So \"+inbox/../news\" |
| 1591 | will be normalized to \"+news\". |
| 1592 | |
| 1593 | If optional argument EMPTY-STRING-OKAY is nil then a '+' is added at the |
| 1594 | front if FOLDER lacks one. If non-nil and FOLDER is the empty string then |
| 1595 | nothing is added. |
| 1596 | |
| 1597 | If optional argument DONT-REMOVE-TRAILING-SLASH is non-nil then a trailing '/' |
| 1598 | if present is retained (if present), otherwise it is removed." |
| 1599 | (when (stringp folder) |
| 1600 | ;; Replace two or more consecutive '/' characters with a single '/' |
| 1601 | (while (string-match "//" folder) |
| 1602 | (setq folder (replace-match "/" nil t folder))) |
| 1603 | (let* ((length (length folder)) |
| 1604 | (trailing-slash-present (and (> length 0) |
| 1605 | (equal (aref folder (1- length)) ?/)))) |
| 1606 | (let ((components (split-string folder "/")) |
| 1607 | (result ())) |
| 1608 | ;; Remove .. and . from the pathname. |
| 1609 | (dolist (component components) |
| 1610 | (cond ((and (equal component "..") result) |
| 1611 | (pop result)) |
| 1612 | ((equal component "..")) |
| 1613 | ((equal component ".")) |
| 1614 | (t (push component result)))) |
| 1615 | (setq folder "") |
| 1616 | (dolist (component result) |
| 1617 | (setq folder (concat component "/" folder))) |
| 1618 | ;; Remove trailing '/' if needed. |
| 1619 | (unless (and trailing-slash-present dont-remove-trailing-slash) |
| 1620 | (when (not (equal folder "")) |
| 1621 | (setq folder (substring folder 0 (1- (length folder)))))))) |
| 1622 | (cond ((and empty-string-okay (equal folder ""))) |
| 1623 | ((equal folder "") (setq folder "+")) |
| 1624 | ((not (equal (aref folder 0) ?+)) (setq folder (concat "+" folder))))) |
| 1625 | folder) |
| 1626 | |
| 1627 | (defun mh-sub-folders (folder &optional add-trailing-slash-flag) |
| 1628 | "Find the subfolders of FOLDER. |
| 1629 | The function avoids running folders unnecessarily by caching the results of |
| 1630 | the actual folders call. |
| 1631 | |
| 1632 | If optional argument ADD-TRAILING-SLASH-FLAG is non-nil then a slash is added |
| 1633 | to each of the sub-folder names that may have nested folders within them." |
| 1634 | (let* ((folder (mh-normalize-folder-name folder)) |
| 1635 | (match (gethash folder mh-sub-folders-cache 'no-result)) |
| 1636 | (sub-folders (cond ((eq match 'no-result) |
| 1637 | (setf (gethash folder mh-sub-folders-cache) |
| 1638 | (mh-sub-folders-actual folder))) |
| 1639 | (t match)))) |
| 1640 | (if add-trailing-slash-flag |
| 1641 | (mapcar #'(lambda (x) |
| 1642 | (if (cdr x) (cons (concat (car x) "/") (cdr x)) x)) |
| 1643 | sub-folders) |
| 1644 | sub-folders))) |
| 1645 | |
| 1646 | (defun mh-sub-folders-actual (folder) |
| 1647 | "Execute the command folders to return the sub-folders of FOLDER. |
| 1648 | Filters out the folder names that start with \".\" so that directories that |
| 1649 | aren't usually mail folders are hidden." |
| 1650 | (let ((arg-list `(,(expand-file-name "folders" mh-progs) |
| 1651 | nil (t nil) nil "-noheader" "-norecurse" "-nototal" |
| 1652 | ,@(if (stringp folder) (list folder) ()))) |
| 1653 | (results ()) |
| 1654 | (current-folder (concat |
| 1655 | (with-temp-buffer |
| 1656 | (call-process (expand-file-name "folder" mh-progs) |
| 1657 | nil '(t nil) nil "-fast") |
| 1658 | (buffer-substring (point-min) (1- (point-max)))) |
| 1659 | "+"))) |
| 1660 | (with-temp-buffer |
| 1661 | (apply #'call-process arg-list) |
| 1662 | (goto-char (point-min)) |
| 1663 | (while (not (and (eolp) (bolp))) |
| 1664 | (goto-char (line-end-position)) |
| 1665 | (let ((has-pos (search-backward " has " (line-beginning-position) t))) |
| 1666 | (when (integerp has-pos) |
| 1667 | (while (equal (char-after has-pos) ? ) |
| 1668 | (decf has-pos)) |
| 1669 | (incf has-pos) |
| 1670 | (let* ((name (buffer-substring (line-beginning-position) has-pos)) |
| 1671 | (first-char (aref name 0)) |
| 1672 | (last-char (aref name (1- (length name))))) |
| 1673 | (unless (member first-char '(?. ?# ?,)) |
| 1674 | (when (and (equal last-char ?+) (equal name current-folder)) |
| 1675 | (setq name (substring name 0 (1- (length name))))) |
| 1676 | (push |
| 1677 | (cons name |
| 1678 | (search-forward "(others)" (line-end-position) t)) |
| 1679 | results)))) |
| 1680 | (forward-line 1)))) |
| 1681 | (setq results (nreverse results)) |
| 1682 | (when (stringp folder) |
| 1683 | (setq results (cdr results)) |
| 1684 | (let ((folder-name-len (length (format "%s/" (substring folder 1))))) |
| 1685 | (setq results (mapcar (lambda (f) |
| 1686 | (cons (substring (car f) folder-name-len) |
| 1687 | (cdr f))) |
| 1688 | results)))) |
| 1689 | results)) |
| 1690 | |
| 1691 | (defun mh-remove-from-sub-folders-cache (folder) |
| 1692 | "Remove FOLDER and its parent from `mh-sub-folders-cache'. |
| 1693 | FOLDER should be unconditionally removed from the cache. Also the last ancestor |
| 1694 | of FOLDER present in the cache must be removed as well. |
| 1695 | |
| 1696 | To see why this is needed assume we have a folder +foo which has a single |
| 1697 | sub-folder qux. Now we create the folder +foo/bar/baz. Here we will need to |
| 1698 | invalidate the cached sub-folders of +foo, otherwise completion on +foo won't |
| 1699 | tell us about the option +foo/bar!" |
| 1700 | (remhash folder mh-sub-folders-cache) |
| 1701 | (block ancestor-found |
| 1702 | (let ((parent folder) |
| 1703 | (one-ancestor-found nil) |
| 1704 | last-slash) |
| 1705 | (while (setq last-slash (mh-search-from-end ?/ parent)) |
| 1706 | (setq parent (substring parent 0 last-slash)) |
| 1707 | (unless (eq (gethash parent mh-sub-folders-cache 'none) 'none) |
| 1708 | (remhash parent mh-sub-folders-cache) |
| 1709 | (if one-ancestor-found |
| 1710 | (return-from ancestor-found) |
| 1711 | (setq one-ancestor-found t)))) |
| 1712 | (remhash nil mh-sub-folders-cache)))) |
| 1713 | |
| 1714 | (defvar mh-folder-hist nil) |
| 1715 | (defvar mh-speed-folder-map) |
| 1716 | (defvar mh-folder-completion-map (copy-keymap minibuffer-local-completion-map)) |
| 1717 | (define-key mh-folder-completion-map " " 'minibuffer-complete) |
| 1718 | |
| 1719 | (defun mh-folder-completion-function (name predicate flag) |
| 1720 | "Programmable completion for folder names. |
| 1721 | NAME is the partial folder name that has been input. PREDICATE if non-nil is a |
| 1722 | function that is used to filter the possible choices and FLAG determines |
| 1723 | whether the completion is over." |
| 1724 | (let* ((orig-name name) |
| 1725 | (name (mh-normalize-folder-name name nil t)) |
| 1726 | (last-slash (mh-search-from-end ?/ name)) |
| 1727 | (last-complete (if last-slash (substring name 0 last-slash) nil)) |
| 1728 | (remainder (cond (last-complete (substring name (1+ last-slash))) |
| 1729 | ((and (> (length name) 0) (equal (aref name 0) ?+)) |
| 1730 | (substring name 1)) |
| 1731 | (t "")))) |
| 1732 | (cond ((eq flag nil) |
| 1733 | (let ((try-res (try-completion |
| 1734 | name |
| 1735 | (mapcar (lambda (x) |
| 1736 | (cons (if (not last-complete) |
| 1737 | (concat "+" (car x)) |
| 1738 | (concat last-complete "/" (car x))) |
| 1739 | (cdr x))) |
| 1740 | (mh-sub-folders last-complete t)) |
| 1741 | predicate))) |
| 1742 | (cond ((eq try-res nil) nil) |
| 1743 | ((and (eq try-res t) (equal name orig-name)) t) |
| 1744 | ((eq try-res t) name) |
| 1745 | (t try-res)))) |
| 1746 | ((eq flag t) |
| 1747 | (all-completions |
| 1748 | remainder (mh-sub-folders last-complete t) predicate)) |
| 1749 | ((eq flag 'lambda) |
| 1750 | (file-exists-p |
| 1751 | (concat mh-user-path |
| 1752 | (substring (mh-normalize-folder-name name) 1))))))) |
| 1753 | |
| 1754 | (defun mh-folder-completing-read (prompt default) |
| 1755 | "Read folder name with PROMPT and default result DEFAULT." |
| 1756 | (mh-normalize-folder-name |
| 1757 | (let ((minibuffer-local-completion-map mh-folder-completion-map)) |
| 1758 | (completing-read prompt 'mh-folder-completion-function nil nil nil |
| 1759 | 'mh-folder-hist default)) |
| 1760 | t)) |
| 1761 | |
| 1762 | (defun mh-prompt-for-folder (prompt default can-create |
| 1763 | &optional default-string allow-root-folder-flag) |
| 1764 | "Prompt for a folder name with PROMPT. |
| 1765 | Returns the folder's name as a string. DEFAULT is used if the folder exists |
| 1766 | and the user types return. If the CAN-CREATE flag is t, then a folder is |
| 1767 | created if it doesn't already exist. If optional argument DEFAULT-STRING is |
| 1768 | non-nil, use it in the prompt instead of DEFAULT. If ALLOW-ROOT-FOLDER-FLAG is |
| 1769 | non-nil then the function will accept the folder +, which means all folders |
| 1770 | when used in searching." |
| 1771 | (if (null default) |
| 1772 | (setq default "")) |
| 1773 | (let* ((default-string (cond (default-string (format " [%s]? " |
| 1774 | default-string)) |
| 1775 | ((equal "" default) "? ") |
| 1776 | (t (format " [%s]? " default)))) |
| 1777 | (prompt (format "%s folder%s" prompt default-string)) |
| 1778 | read-name folder-name) |
| 1779 | (while (and (setq read-name (mh-folder-completing-read prompt default)) |
| 1780 | (equal read-name "") |
| 1781 | (equal default ""))) |
| 1782 | (cond ((or (equal read-name "") |
| 1783 | (and (equal read-name "+") (not allow-root-folder-flag))) |
| 1784 | (setq read-name default)) |
| 1785 | ((not (mh-folder-name-p read-name)) |
| 1786 | (setq read-name (format "+%s" read-name)))) |
| 1787 | (if (or (not read-name) (equal "" read-name)) |
| 1788 | (error "No folder specified")) |
| 1789 | (setq folder-name read-name) |
| 1790 | (cond ((and (> (length folder-name) 0) |
| 1791 | (eq (aref folder-name (1- (length folder-name))) ?/)) |
| 1792 | (setq folder-name (substring folder-name 0 -1)))) |
| 1793 | (let ((new-file-flag |
| 1794 | (not (file-exists-p (mh-expand-file-name folder-name))))) |
| 1795 | (cond ((and new-file-flag |
| 1796 | (y-or-n-p |
| 1797 | (format "Folder %s does not exist. Create it? " |
| 1798 | folder-name))) |
| 1799 | (message "Creating %s" folder-name) |
| 1800 | (mh-exec-cmd-error nil "folder" folder-name) |
| 1801 | (mh-remove-from-sub-folders-cache folder-name) |
| 1802 | (when (boundp 'mh-speed-folder-map) |
| 1803 | (mh-speed-add-folder folder-name)) |
| 1804 | (message "Creating %s...done" folder-name)) |
| 1805 | (new-file-flag |
| 1806 | (error "Folder %s is not created" folder-name)) |
| 1807 | ((not (file-directory-p (mh-expand-file-name folder-name))) |
| 1808 | (error "\"%s\" is not a directory" |
| 1809 | (mh-expand-file-name folder-name))))) |
| 1810 | folder-name)) |
| 1811 | |
| 1812 | ;;; Issue commands to MH. |
| 1813 | |
| 1814 | (defun mh-exec-cmd (command &rest args) |
| 1815 | "Execute mh-command COMMAND with ARGS. |
| 1816 | The side effects are what is desired. |
| 1817 | Any output is assumed to be an error and is shown to the user. |
| 1818 | The output is not read or parsed by MH-E." |
| 1819 | (save-excursion |
| 1820 | (set-buffer (get-buffer-create mh-log-buffer)) |
| 1821 | (erase-buffer) |
| 1822 | (apply 'call-process |
| 1823 | (expand-file-name command mh-progs) nil t nil |
| 1824 | (mh-list-to-string args)) |
| 1825 | (if (> (buffer-size) 0) |
| 1826 | (save-window-excursion |
| 1827 | (switch-to-buffer-other-window mh-log-buffer) |
| 1828 | (sit-for 5))))) |
| 1829 | |
| 1830 | (defun mh-exec-cmd-error (env command &rest args) |
| 1831 | "In environment ENV, execute mh-command COMMAND with ARGS. |
| 1832 | ENV is nil or a string of space-separated \"var=value\" elements. |
| 1833 | Signals an error if process does not complete successfully." |
| 1834 | (save-excursion |
| 1835 | (set-buffer (get-buffer-create mh-temp-buffer)) |
| 1836 | (erase-buffer) |
| 1837 | (let ((status |
| 1838 | (if env |
| 1839 | ;; the shell hacks necessary here shows just how broken Unix is |
| 1840 | (apply 'call-process "/bin/sh" nil t nil "-c" |
| 1841 | (format "%s %s ${1+\"$@\"}" |
| 1842 | env |
| 1843 | (expand-file-name command mh-progs)) |
| 1844 | command |
| 1845 | (mh-list-to-string args)) |
| 1846 | (apply 'call-process |
| 1847 | (expand-file-name command mh-progs) nil t nil |
| 1848 | (mh-list-to-string args))))) |
| 1849 | (mh-handle-process-error command status)))) |
| 1850 | |
| 1851 | (defun mh-exec-cmd-daemon (command filter &rest args) |
| 1852 | "Execute MH command COMMAND in the background. |
| 1853 | |
| 1854 | If FILTER is non-nil then it is used to process the output otherwise the |
| 1855 | default filter `mh-process-daemon' is used. See `set-process-filter' for more |
| 1856 | details of FILTER. |
| 1857 | |
| 1858 | ARGS are passed to COMMAND as command line arguments." |
| 1859 | (save-excursion |
| 1860 | (set-buffer (get-buffer-create mh-log-buffer)) |
| 1861 | (erase-buffer)) |
| 1862 | (let* ((process-connection-type nil) |
| 1863 | (process (apply 'start-process |
| 1864 | command nil |
| 1865 | (expand-file-name command mh-progs) |
| 1866 | (mh-list-to-string args)))) |
| 1867 | (set-process-filter process (or filter 'mh-process-daemon)))) |
| 1868 | |
| 1869 | (defun mh-process-daemon (process output) |
| 1870 | "PROCESS daemon that puts OUTPUT into a temporary buffer. |
| 1871 | Any output from the process is displayed in an asynchronous pop-up window." |
| 1872 | (set-buffer (get-buffer-create mh-log-buffer)) |
| 1873 | (insert-before-markers output) |
| 1874 | (display-buffer mh-log-buffer)) |
| 1875 | |
| 1876 | (defun mh-exec-cmd-quiet (raise-error command &rest args) |
| 1877 | "Signal RAISE-ERROR if COMMAND with ARGS fails. |
| 1878 | Execute MH command COMMAND with ARGS. ARGS is a list of strings. |
| 1879 | Return at start of mh-temp buffer, where output can be parsed and used. |
| 1880 | Returns value of `call-process', which is 0 for success, unless RAISE-ERROR is |
| 1881 | non-nil, in which case an error is signaled if `call-process' returns non-0." |
| 1882 | (set-buffer (get-buffer-create mh-temp-buffer)) |
| 1883 | (erase-buffer) |
| 1884 | (let ((value |
| 1885 | (apply 'call-process |
| 1886 | (expand-file-name command mh-progs) nil t nil |
| 1887 | args))) |
| 1888 | (goto-char (point-min)) |
| 1889 | (if raise-error |
| 1890 | (mh-handle-process-error command value) |
| 1891 | value))) |
| 1892 | |
| 1893 | (defun mh-profile-component (component) |
| 1894 | "Return COMPONENT value from mhparam, or nil if unset." |
| 1895 | (save-excursion |
| 1896 | (mh-exec-cmd-quiet nil "mhparam" "-components" component) |
| 1897 | (mh-get-profile-field (concat component ":")))) |
| 1898 | |
| 1899 | (defun mh-exchange-point-and-mark-preserving-active-mark () |
| 1900 | "Put the mark where point is now, and point where the mark is now. |
| 1901 | This command works even when the mark is not active, and preserves whether the |
| 1902 | mark is active or not." |
| 1903 | (interactive nil) |
| 1904 | (let ((is-active (and (boundp 'mark-active) mark-active))) |
| 1905 | (let ((omark (mark t))) |
| 1906 | (if (null omark) |
| 1907 | (error "No mark set in this buffer")) |
| 1908 | (set-mark (point)) |
| 1909 | (goto-char omark) |
| 1910 | (if (boundp 'mark-active) |
| 1911 | (setq mark-active is-active)) |
| 1912 | nil))) |
| 1913 | |
| 1914 | (defun mh-exec-cmd-output (command display &rest args) |
| 1915 | "Execute MH command COMMAND with DISPLAY flag and ARGS. |
| 1916 | Put the output into buffer after point. Set mark after inserted text. |
| 1917 | Output is expected to be shown to user, not parsed by MH-E." |
| 1918 | (push-mark (point) t) |
| 1919 | (apply 'call-process |
| 1920 | (expand-file-name command mh-progs) nil t display |
| 1921 | (mh-list-to-string args)) |
| 1922 | |
| 1923 | ;; The following is used instead of 'exchange-point-and-mark because the |
| 1924 | ;; latter activates the current region (between point and mark), which |
| 1925 | ;; turns on highlighting. So prior to this bug fix, doing "inc" would |
| 1926 | ;; highlight a region containing the new messages, which is undesirable. |
| 1927 | ;; The bug wasn't seen in emacs21 but still occurred in XEmacs21.4. |
| 1928 | (mh-exchange-point-and-mark-preserving-active-mark)) |
| 1929 | |
| 1930 | (defun mh-exec-lib-cmd-output (command &rest args) |
| 1931 | "Execute MH library command COMMAND with ARGS. |
| 1932 | Put the output into buffer after point. Set mark after inserted text." |
| 1933 | (apply 'mh-exec-cmd-output (expand-file-name command mh-lib-progs) nil args)) |
| 1934 | |
| 1935 | (defun mh-handle-process-error (command status) |
| 1936 | "Raise error if COMMAND returned non-zero STATUS, otherwise return STATUS. |
| 1937 | STATUS is return value from `call-process'. |
| 1938 | Program output is in current buffer. |
| 1939 | If output is too long to include in error message, display the buffer." |
| 1940 | (cond ((eq status 0) ;success |
| 1941 | status) |
| 1942 | ((stringp status) ;kill string |
| 1943 | (error "%s: %s" command status)) |
| 1944 | (t ;exit code |
| 1945 | (cond |
| 1946 | ((= (buffer-size) 0) ;program produced no error message |
| 1947 | (error "%s: exit code %d" command status)) |
| 1948 | (t |
| 1949 | ;; will error message fit on one line? |
| 1950 | (goto-line 2) |
| 1951 | (if (and (< (buffer-size) (frame-width)) |
| 1952 | (eobp)) |
| 1953 | (error "%s" |
| 1954 | (buffer-substring 1 (progn (goto-char 1) |
| 1955 | (end-of-line) |
| 1956 | (point)))) |
| 1957 | (display-buffer (current-buffer)) |
| 1958 | (error "%s failed with status %d. See error message in other window" |
| 1959 | command status))))))) |
| 1960 | |
| 1961 | (defun mh-list-to-string (l) |
| 1962 | "Flatten the list L and make every element of the new list into a string." |
| 1963 | (nreverse (mh-list-to-string-1 l))) |
| 1964 | |
| 1965 | (defun mh-list-to-string-1 (l) |
| 1966 | "Flatten the list L and make every element of the new list into a string." |
| 1967 | (let ((new-list nil)) |
| 1968 | (while l |
| 1969 | (cond ((null (car l))) |
| 1970 | ((symbolp (car l)) |
| 1971 | (setq new-list (cons (symbol-name (car l)) new-list))) |
| 1972 | ((numberp (car l)) |
| 1973 | (setq new-list (cons (int-to-string (car l)) new-list))) |
| 1974 | ((equal (car l) "")) |
| 1975 | ((stringp (car l)) (setq new-list (cons (car l) new-list))) |
| 1976 | ((listp (car l)) |
| 1977 | (setq new-list (nconc (mh-list-to-string-1 (car l)) |
| 1978 | new-list))) |
| 1979 | (t (error "Bad element in mh-list-to-string: %s" (car l)))) |
| 1980 | (setq l (cdr l))) |
| 1981 | new-list)) |
| 1982 | |
| 1983 | (provide 'mh-utils) |
| 1984 | |
| 1985 | ;;; Local Variables: |
| 1986 | ;;; indent-tabs-mode: nil |
| 1987 | ;;; sentence-end-double-space: nil |
| 1988 | ;;; End: |
| 1989 | |
| 1990 | ;;; mh-utils.el ends here |