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c26cf6c8 | 1 | ;;; mh-utils.el --- mh-e code needed for both sending and reading |
b3470e4c | 2 | ;; Time-stamp: <95/10/22 17:58:16 gildea> |
c26cf6c8 | 3 | |
b6d4ab05 | 4 | ;; Copyright (C) 1993, 1995 Free Software Foundation, Inc. |
c26cf6c8 | 5 | |
b3470e4c | 6 | ;; This file is part of mh-e, part of GNU Emacs. |
c26cf6c8 | 7 | |
9b7bc076 | 8 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
c26cf6c8 RS |
9 | ;; it under the terms of the GNU General Public License as published by |
10 | ;; the Free Software Foundation; either version 2, or (at your option) | |
11 | ;; any later version. | |
12 | ||
9b7bc076 | 13 | ;; GNU Emacs is distributed in the hope that it will be useful, |
c26cf6c8 RS |
14 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | ;; GNU General Public License for more details. | |
17 | ||
18 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
19 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
20 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | ;; Boston, MA 02111-1307, USA. | |
c26cf6c8 RS |
22 | |
23 | ;;; Commentary: | |
24 | ||
25 | ;; Internal support for mh-e package. | |
26 | ||
b6d4ab05 KH |
27 | ;;; Change Log: |
28 | ||
b578f267 | 29 | ;; $Id: mh-utils.el,v 1.7 1996/01/09 23:19:28 kwzh Exp erik $ |
b6d4ab05 | 30 | |
c26cf6c8 RS |
31 | ;;; Code: |
32 | ||
c919c21a RS |
33 | ;;; Set for local environment: |
34 | ;;; mh-progs and mh-lib used to be set in paths.el, which tried to | |
35 | ;;; figure out at build time which of several possible directories MH | |
36 | ;;; was installed into. But if you installed MH after building Emacs, | |
37 | ;;; this would almost certainly be wrong, so now we do it at run time. | |
c26cf6c8 | 38 | |
c919c21a RS |
39 | (defvar mh-progs nil |
40 | "Directory containing MH commands, such as inc, repl, and rmm.") | |
c26cf6c8 | 41 | |
c919c21a RS |
42 | (defvar mh-lib nil |
43 | "Directory containing the MH library. | |
44 | This directory contains, among other things, | |
45 | the mhl program and the components file.") | |
c26cf6c8 | 46 | |
b6d4ab05 KH |
47 | ;;;###autoload |
48 | (put 'mh-progs 'risky-local-variable t) | |
49 | ;;;###autoload | |
50 | (put 'mh-lib 'risky-local-variable t) | |
51 | ||
c919c21a | 52 | ;;; User preferences: |
c26cf6c8 RS |
53 | |
54 | (defvar mh-auto-folder-collect t | |
55 | "*Whether to start collecting MH folder names immediately in the background. | |
56 | Non-nil means start a background process collecting the names of all | |
57 | folders as soon as mh-e is loaded.") | |
58 | ||
59 | (defvar mh-recursive-folders nil | |
60 | "*If non-nil, then commands which operate on folders do so recursively.") | |
61 | ||
62 | (defvar mh-clean-message-header nil | |
63 | "*Non-nil means clean headers of messages that are displayed or inserted. | |
64 | The variables `mh-visible-headers' and `mh-invisible-headers' control what | |
65 | is removed.") | |
66 | ||
67 | (defvar mh-visible-headers nil | |
68 | "*If non-nil, contains a regexp specifying the headers to keep when cleaning. | |
69 | Only used if `mh-clean-message-header' is non-nil. Setting this variable | |
70 | overrides `mh-invisible-headers'.") | |
71 | ||
72 | (defvar mh-invisible-headers | |
b6d4ab05 | 73 | "^Received: \\|^Message-Id: \\|^Remailed-\\|^Via: \\|^Mail-from: \\|^Return-Path: \\|^Delivery-Date: \\|^In-Reply-To: \\|^Resent-" |
c26cf6c8 RS |
74 | "Regexp matching lines in a message header that are not to be shown. |
75 | If `mh-visible-headers' is non-nil, it is used instead to specify what | |
76 | to keep.") | |
77 | ||
78 | (defvar mh-bury-show-buffer t | |
79 | "*Non-nil means that the displayed show buffer for a folder is buried.") | |
80 | ||
81 | (defvar mh-summary-height 4 | |
82 | "*Number of lines in MH-Folder window (including the mode line).") | |
83 | ||
84 | (defvar mh-msg-number-regexp "^ *\\([0-9]+\\)" | |
85 | "Regexp to find the number of a message in a scan line. | |
86 | The message's number must be surrounded with \\( \\)") | |
87 | ||
88 | (defvar mh-msg-search-regexp "^[^0-9]*%d[^0-9]" | |
89 | "Format string containing a regexp matching the scan listing for a message. | |
90 | The desired message's number will be an argument to format.") | |
91 | ||
92 | (defvar mhl-formfile nil | |
93 | "*Name of format file to be used by mhl to show and print messages. | |
94 | A value of T means use the default format file. | |
95 | Nil means don't use mhl to format messages when showing; mhl is still used, | |
96 | with the default format file, to format messages when printing them. | |
97 | The format used should specify a non-zero value for overflowoffset so | |
98 | the message continues to conform to RFC 822 and mh-e can parse the headers.") | |
b3470e4c | 99 | (put 'mhl-formfile 'info-file "mh-e") |
c26cf6c8 | 100 | |
b6d4ab05 KH |
101 | (defvar mh-default-folder-for-message-function nil |
102 | "Function to select a default folder for refiling or Fcc. | |
103 | If set to a function, that function is called with no arguments by | |
104 | `\\[mh-refile-msg]' and `\\[mh-to-fcc]' to get a default when | |
105 | prompting the user for a folder. The function is called from within a | |
106 | save-excursion, with point at the start of the message. It should | |
107 | return the folder to offer as the refile or Fcc folder, as a string | |
108 | with a leading `+' sign. It can also return an empty string to use no | |
109 | default, or NIL to calculate the default the usual way. | |
110 | NOTE: This variable is not an ordinary hook; | |
111 | It may not be a list of functions.") | |
112 | ||
113 | (defvar mh-find-path-hook nil | |
114 | "Invoked by mh-find-path while reading the user's MH profile.") | |
c26cf6c8 | 115 | |
b6d4ab05 KH |
116 | (defvar mh-folder-list-change-hook nil |
117 | "Invoked whenever the cached folder list `mh-folder-list' is changed.") | |
118 | ||
119 | (defvar mh-show-buffer-mode-line-buffer-id "{show-%s} %d" | |
120 | "Format string to produce `mode-line-buffer-identification' for show buffers. | |
121 | First argument is folder name. Second is message number.") | |
c26cf6c8 RS |
122 | |
123 | (defvar mh-cmd-note 4 | |
124 | "Offset to insert notation.") | |
125 | ||
b6d4ab05 KH |
126 | (defvar mh-note-seq "%" |
127 | "String whose first character is used to notate messages in a sequence.") | |
128 | ||
129 | ;;; Internal bookkeeping variables: | |
130 | ||
131 | ;; The value of `mh-folder-list-change-hook' is called whenever | |
132 | ;; mh-folder-list variable is set. | |
133 | (defvar mh-folder-list nil) ;List of folder names for completion. | |
134 | ||
135 | ;; Cached value of the `Path:' component in the user's MH profile. | |
136 | (defvar mh-user-path nil) ;User's mail folder directory. | |
c26cf6c8 | 137 | |
b6d4ab05 KH |
138 | ;; An mh-draft-folder of NIL means do not use a draft folder. |
139 | ;; Cached value of the `Draft-Folder:' component in the user's MH profile. | |
140 | (defvar mh-draft-folder nil) ;Name of folder containing draft messages. | |
c26cf6c8 | 141 | |
b6d4ab05 KH |
142 | ;; Cached value of the `Unseen-Sequence:' component in the user's MH profile. |
143 | (defvar mh-unseen-seq nil) ;Name of the Unseen sequence. | |
c26cf6c8 | 144 | |
b6d4ab05 KH |
145 | ;; Cached value of the `Previous-Sequence:' component in the user's MH profile. |
146 | (defvar mh-previous-seq nil) ;Name of the Previous sequence. | |
c26cf6c8 | 147 | |
b6d4ab05 KH |
148 | ;; Cached value of the `Inbox:' component in the user's MH profile, |
149 | ;; or "+inbox" if no such component. | |
150 | (defvar mh-inbox nil) ;Name of the Inbox folder. | |
c26cf6c8 | 151 | |
b6d4ab05 | 152 | (defconst mh-temp-buffer " *mh-temp*") ;Name of mh-e scratch buffer. |
c26cf6c8 | 153 | |
b6d4ab05 | 154 | (defvar mh-previous-window-config nil) ;Window configuration before mh-e command. |
c26cf6c8 | 155 | |
b6d4ab05 | 156 | ;;; Internal variables local to a folder. |
c26cf6c8 | 157 | |
b6d4ab05 | 158 | (defvar mh-current-folder nil) ;Name of current folder, a string. |
c26cf6c8 | 159 | |
b6d4ab05 | 160 | (defvar mh-show-buffer nil) ;Buffer that displays message for this folder. |
c26cf6c8 | 161 | |
b6d4ab05 | 162 | (defvar mh-folder-filename nil) ;Full path of directory for this folder. |
b3470e4c KH |
163 | |
164 | (defvar mh-msg-count nil) ;Number of msgs in buffer. | |
c26cf6c8 | 165 | |
b6d4ab05 | 166 | (defvar mh-showing nil) ;If non-nil, show the message in a separate window. |
c26cf6c8 | 167 | |
b6d4ab05 KH |
168 | ;;; This holds a documentation string used by describe-mode. |
169 | (defun mh-showing () | |
170 | "When moving to a new message in the Folder window, | |
171 | also show it in a separate Show window." | |
172 | nil) | |
173 | ||
174 | (defvar mh-seq-list nil) ;The sequences of this folder. An alist of (seq . msgs). | |
175 | ||
176 | (defvar mh-seen-list nil) ;List of displayed messages to be removed from the Unseen sequence. | |
177 | ||
178 | ;; If non-nil, show buffer contains message with all headers. | |
179 | ;; If nil, show buffer contains message processed normally. | |
180 | (defvar mh-showing-with-headers nil) ;Showing message with headers or normally. | |
c26cf6c8 RS |
181 | |
182 | ||
c919c21a RS |
183 | ;;; mh-e macros |
184 | ||
185 | (defmacro with-mh-folder-updating (save-modification-flag-p &rest body) | |
186 | ;; Format is (with-mh-folder-updating (SAVE-MODIFICATION-FLAG-P) &body BODY). | |
187 | ;; Execute BODY, which can modify the folder buffer without having to | |
188 | ;; worry about file locking or the read-only flag, and return its result. | |
189 | ;; If SAVE-MODIFICATION-FLAG-P is non-nil, the buffer's modification | |
190 | ;; flag is unchanged, otherwise it is cleared. | |
191 | (setq save-modification-flag-p (car save-modification-flag-p)) ; CL style | |
192 | (` (prog1 | |
193 | (let ((mh-folder-updating-mod-flag (buffer-modified-p)) | |
194 | (buffer-read-only nil) | |
195 | (buffer-file-name nil)) ;don't let the buffer get locked | |
196 | (prog1 | |
197 | (progn | |
198 | (,@ body)) | |
199 | (mh-set-folder-modified-p mh-folder-updating-mod-flag))) | |
200 | (,@ (if (not save-modification-flag-p) | |
201 | '((mh-set-folder-modified-p nil))))))) | |
202 | ||
203 | (put 'with-mh-folder-updating 'lisp-indent-hook 1) | |
204 | ||
205 | (defmacro mh-in-show-buffer (show-buffer &rest body) | |
b6d4ab05 | 206 | ;; Format is (mh-in-show-buffer (SHOW-BUFFER) &body BODY). |
c919c21a RS |
207 | ;; Display buffer SHOW-BUFFER in other window and execute BODY in it. |
208 | ;; Stronger than save-excursion, weaker than save-window-excursion. | |
209 | (setq show-buffer (car show-buffer)) ; CL style | |
210 | (` (let ((mh-in-show-buffer-saved-window (selected-window))) | |
211 | (switch-to-buffer-other-window (, show-buffer)) | |
212 | (if mh-bury-show-buffer (bury-buffer (current-buffer))) | |
213 | (unwind-protect | |
214 | (progn | |
215 | (,@ body)) | |
216 | (select-window mh-in-show-buffer-saved-window))))) | |
217 | ||
218 | (put 'mh-in-show-buffer 'lisp-indent-hook 1) | |
219 | ||
b6d4ab05 KH |
220 | (defmacro mh-make-seq (name msgs) (list 'cons name msgs)) |
221 | ||
c919c21a RS |
222 | (defmacro mh-seq-name (pair) (list 'car pair)) |
223 | ||
224 | (defmacro mh-seq-msgs (pair) (list 'cdr pair)) | |
225 | ||
226 | ||
c26cf6c8 RS |
227 | ;;; Ensure new buffers won't get this mode if default-major-mode is nil. |
228 | (put 'mh-show-mode 'mode-class 'special) | |
229 | ||
230 | (defun mh-show-mode () | |
231 | "Major mode for showing messages in mh-e. | |
232 | The value of mh-show-mode-hook is called when a new message is displayed." | |
233 | (kill-all-local-variables) | |
234 | (setq major-mode 'mh-show-mode) | |
235 | (mh-set-mode-name "MH-Show") | |
236 | (run-hooks 'mh-show-mode-hook)) | |
237 | ||
238 | ||
239 | (defun mh-maybe-show (&optional msg) | |
240 | ;; If in showing mode, then display the message pointed to by the cursor. | |
241 | (if mh-showing (mh-show msg))) | |
242 | ||
b6d4ab05 | 243 | (defun mh-show (&optional message) |
c919c21a RS |
244 | "Show MESSAGE (default: message at cursor). |
245 | Force a two-window display with the folder window on top (size | |
c26cf6c8 | 246 | mh-summary-height) and the show buffer below it. |
c919c21a RS |
247 | If the message is already visible, display the start of the message. |
248 | ||
249 | Display of the message is controlled by setting the variables | |
250 | `mh-clean-message-header' and `mhl-formfile'. The default behavior is | |
251 | to scroll uninteresting headers off the top of the window. | |
252 | Type \"\\[mh-header-display]\" to see the message with all its headers." | |
c26cf6c8 RS |
253 | (interactive) |
254 | (and mh-showing-with-headers | |
255 | (or mhl-formfile mh-clean-message-header) | |
256 | (mh-invalidate-show-buffer)) | |
b6d4ab05 | 257 | (mh-show-msg message)) |
c26cf6c8 RS |
258 | |
259 | ||
260 | (defun mh-show-msg (msg) | |
261 | (if (not msg) | |
262 | (setq msg (mh-get-msg-num t))) | |
263 | (setq mh-showing t) | |
264 | (let ((folder mh-current-folder) | |
265 | (clean-message-header mh-clean-message-header) | |
266 | (show-window (get-buffer-window mh-show-buffer))) | |
267 | (if (not (eql (next-window (minibuffer-window)) (selected-window))) | |
268 | (delete-other-windows)) ; force ourself to the top window | |
269 | (mh-in-show-buffer (mh-show-buffer) | |
270 | (if (and show-window | |
271 | (equal (mh-msg-filename msg folder) buffer-file-name)) | |
272 | (progn ;just back up to start | |
273 | (goto-char (point-min)) | |
274 | (if (not clean-message-header) | |
275 | (mh-start-of-uncleaned-message))) | |
276 | (mh-display-msg msg folder)))) | |
277 | (if (not (= (1+ (window-height)) (screen-height))) ;not horizontally split | |
278 | (shrink-window (- (window-height) mh-summary-height))) | |
279 | (mh-recenter nil) | |
280 | (if (not (memq msg mh-seen-list)) (setq mh-seen-list (cons msg mh-seen-list))) | |
281 | (run-hooks 'mh-show-hook)) | |
282 | ||
283 | ||
284 | (defun mh-display-msg (msg-num folder) | |
285 | ;; Display message NUMBER of FOLDER. | |
286 | ;; Sets the current buffer to the show buffer. | |
287 | (set-buffer folder) | |
288 | ;; Bind variables in folder buffer in case they are local | |
289 | (let ((formfile mhl-formfile) | |
290 | (clean-message-header mh-clean-message-header) | |
291 | (invisible-headers mh-invisible-headers) | |
292 | (visible-headers mh-visible-headers) | |
293 | (msg-filename (mh-msg-filename msg-num)) | |
294 | (show-buffer mh-show-buffer)) | |
295 | (if (not (file-exists-p msg-filename)) | |
296 | (error "Message %d does not exist" msg-num)) | |
297 | (set-buffer show-buffer) | |
298 | (cond ((not (equal msg-filename buffer-file-name)) | |
b6d4ab05 | 299 | (mh-unvisit-file) |
c26cf6c8 | 300 | (erase-buffer) |
b6d4ab05 KH |
301 | ;; Changing contents, so this hook needs to be reinitialized. |
302 | ;; pgp.el uses this. | |
303 | (if (boundp 'write-contents-hooks) ;Emacs 19 | |
c895a248 | 304 | (kill-local-variable 'write-contents-hooks)) |
c26cf6c8 RS |
305 | (if formfile |
306 | (mh-exec-lib-cmd-output "mhl" "-nobell" "-noclear" | |
307 | (if (stringp formfile) | |
308 | (list "-form" formfile)) | |
309 | msg-filename) | |
310 | (insert-file-contents msg-filename)) | |
311 | (goto-char (point-min)) | |
312 | (cond (clean-message-header | |
313 | (mh-clean-msg-header (point-min) | |
314 | invisible-headers | |
315 | visible-headers) | |
316 | (goto-char (point-min))) | |
317 | (t | |
318 | (mh-start-of-uncleaned-message))) | |
b6d4ab05 | 319 | ;; the parts of visiting we want to do (no locking) |
c26cf6c8 RS |
320 | (or (eq buffer-undo-list t) ;don't save undo info for prev msgs |
321 | (setq buffer-undo-list nil)) | |
b6d4ab05 KH |
322 | (set-buffer-modified-p nil) |
323 | (set-buffer-auto-saved) | |
324 | ;; the parts of set-visited-file-name we want to do (no locking) | |
c26cf6c8 | 325 | (setq buffer-file-name msg-filename) |
b6d4ab05 KH |
326 | (setq buffer-backed-up nil) |
327 | (auto-save-mode 1) | |
c26cf6c8 RS |
328 | (set-mark nil) |
329 | (mh-show-mode) | |
330 | (setq mode-line-buffer-identification | |
331 | (list (format mh-show-buffer-mode-line-buffer-id | |
332 | folder msg-num))) | |
333 | (set-buffer folder) | |
334 | (setq mh-showing-with-headers nil))))) | |
335 | ||
336 | (defun mh-start-of-uncleaned-message () | |
337 | ;; position uninteresting headers off the top of the window | |
338 | (let ((case-fold-search t)) | |
339 | (re-search-forward | |
b6d4ab05 | 340 | "^To:\\|^Cc:\\|^From:\\|^Subject:\\|^Date:" nil t) |
c26cf6c8 RS |
341 | (beginning-of-line) |
342 | (mh-recenter 0))) | |
343 | ||
344 | ||
345 | (defun mh-invalidate-show-buffer () | |
346 | ;; Invalidate the show buffer so we must update it to use it. | |
347 | (if (get-buffer mh-show-buffer) | |
348 | (save-excursion | |
349 | (set-buffer mh-show-buffer) | |
b6d4ab05 KH |
350 | (mh-unvisit-file)))) |
351 | ||
c26cf6c8 | 352 | |
b6d4ab05 KH |
353 | (defun mh-unvisit-file () |
354 | ;; Separate current buffer from the message file it was visiting. | |
355 | (or (not (buffer-modified-p)) | |
356 | (null buffer-file-name) ;we've been here before | |
357 | (yes-or-no-p (format "Message %s modified; flush changes? " | |
358 | (file-name-nondirectory buffer-file-name))) | |
359 | (error "Flushing changes not confirmed")) | |
360 | (clear-visited-file-modtime) | |
361 | (unlock-buffer) | |
362 | (setq buffer-file-name nil)) | |
c26cf6c8 | 363 | |
b6d4ab05 | 364 | |
c26cf6c8 RS |
365 | (defun mh-get-msg-num (error-if-no-message) |
366 | ;; Return the message number of the displayed message. If the argument | |
367 | ;; ERROR-IF-NO-MESSAGE is non-nil, then complain if the cursor is not | |
368 | ;; pointing to a message. | |
369 | (save-excursion | |
370 | (beginning-of-line) | |
371 | (cond ((looking-at mh-msg-number-regexp) | |
372 | (string-to-int (buffer-substring (match-beginning 1) | |
373 | (match-end 1)))) | |
374 | (error-if-no-message | |
375 | (error "Cursor not pointing to message")) | |
376 | (t nil)))) | |
377 | ||
378 | ||
379 | (defun mh-msg-filename (msg &optional folder) | |
380 | ;; Return the file name of MESSAGE in FOLDER (default current folder). | |
381 | (expand-file-name (int-to-string msg) | |
382 | (if folder | |
383 | (mh-expand-file-name folder) | |
384 | mh-folder-filename))) | |
385 | ||
386 | ||
387 | (defun mh-clean-msg-header (start invisible-headers visible-headers) | |
388 | ;; Flush extraneous lines in a message header, from the given POINT to the | |
389 | ;; end of the message header. If VISIBLE-HEADERS is non-nil, it contains a | |
390 | ;; regular expression specifying the lines to display, otherwise | |
391 | ;; INVISIBLE-HEADERS contains a regular expression specifying lines to | |
392 | ;; delete from the header. | |
393 | (let ((case-fold-search t)) | |
394 | (save-restriction | |
395 | (goto-char start) | |
396 | (if (search-forward "\n\n" nil 'move) | |
397 | (backward-char 1)) | |
398 | (narrow-to-region start (point)) | |
399 | (goto-char (point-min)) | |
400 | (if visible-headers | |
401 | (while (< (point) (point-max)) | |
402 | (cond ((looking-at visible-headers) | |
403 | (forward-line 1) | |
404 | (while (looking-at "[ \t]") (forward-line 1))) | |
405 | (t | |
406 | (mh-delete-line 1) | |
407 | (while (looking-at "[ \t]") | |
408 | (mh-delete-line 1))))) | |
409 | (while (re-search-forward invisible-headers nil t) | |
410 | (beginning-of-line) | |
411 | (mh-delete-line 1) | |
412 | (while (looking-at "[ \t]") | |
413 | (mh-delete-line 1)))) | |
414 | (unlock-buffer)))) | |
415 | ||
416 | ||
417 | (defun mh-recenter (arg) | |
418 | ;; Like recenter but with two improvements: nil arg means recenter, | |
419 | ;; and only does anything if the current buffer is in the selected | |
420 | ;; window. (Commands like save-some-buffers can make this false.) | |
421 | (if (eql (get-buffer-window (current-buffer)) | |
422 | (selected-window)) | |
423 | (recenter (if arg arg '(t))))) | |
424 | ||
425 | ||
426 | (defun mh-delete-line (lines) | |
427 | ;; Delete version of kill-line. | |
b3470e4c | 428 | (delete-region (point) (progn (forward-line lines) (point)))) |
c26cf6c8 RS |
429 | |
430 | ||
c26cf6c8 RS |
431 | (defun mh-notate (msg notation offset) |
432 | ;; Marks MESSAGE with the character NOTATION at position OFFSET. | |
433 | ;; Null MESSAGE means the message that the cursor points to. | |
434 | (save-excursion | |
435 | (if (or (null msg) | |
436 | (mh-goto-msg msg t t)) | |
437 | (with-mh-folder-updating (t) | |
438 | (beginning-of-line) | |
439 | (forward-char offset) | |
440 | (delete-char 1) | |
441 | (insert notation))))) | |
442 | ||
443 | ||
b3470e4c KH |
444 | (defun mh-find-msg-get-num (step) |
445 | ;; Return the message number of the message on the current scan line | |
446 | ;; or one nearby. Jumps over non-message lines, such as inc errors. | |
447 | ;; STEP tells whether to search forward or backward if we have to search. | |
448 | (or (mh-get-msg-num nil) | |
449 | (let ((msg-num nil) | |
450 | (nreverses 0)) | |
451 | (while (and (not msg-num) | |
452 | (< nreverses 2)) | |
453 | (cond ((eobp) | |
454 | (setq step -1) | |
455 | (setq nreverses (1+ nreverses))) | |
456 | ((bobp) | |
457 | (setq step 1) | |
458 | (setq nreverses (1+ nreverses)))) | |
459 | (forward-line step) | |
460 | (setq msg-num (mh-get-msg-num nil))) | |
461 | msg-num))) | |
462 | ||
c26cf6c8 RS |
463 | (defun mh-goto-msg (number &optional no-error-if-no-message dont-show) |
464 | "Position the cursor at message NUMBER. | |
b6d4ab05 | 465 | Optional non-nil second argument means return nil instead of |
b3470e4c KH |
466 | signaling an error if message does not exist; in this case, |
467 | the cursor is positioned near where the message would have been. | |
b6d4ab05 KH |
468 | Non-nil third argument means not to show the message." |
469 | (interactive "NGo to message: ") | |
470 | (setq number (prefix-numeric-value number)) ;Emacs 19 | |
b3470e4c KH |
471 | ;; This basic routine tries to be as fast as possible, |
472 | ;; using a binary search and minimal regexps. | |
473 | (let ((cur-msg (mh-find-msg-get-num -1)) | |
474 | (jump-size mh-msg-count)) | |
475 | (while (and (> jump-size 1) | |
476 | cur-msg | |
477 | (not (eq cur-msg number))) | |
478 | (cond ((< cur-msg number) | |
479 | (setq jump-size (min (- number cur-msg) | |
480 | (ash (1+ jump-size) -1))) | |
481 | (forward-line jump-size) | |
482 | (setq cur-msg (mh-find-msg-get-num 1))) | |
483 | (t | |
484 | (setq jump-size (min (- cur-msg number) | |
485 | (ash (1+ jump-size) -1))) | |
486 | (forward-line (- jump-size)) | |
487 | (setq cur-msg (mh-find-msg-get-num -1))))) | |
488 | (if (eq cur-msg number) | |
489 | (progn | |
490 | (beginning-of-line) | |
491 | (or dont-show | |
492 | (mh-maybe-show number) | |
493 | t)) | |
494 | (if (not no-error-if-no-message) | |
495 | (error "No message %d" number))))) | |
496 | ||
c26cf6c8 RS |
497 | |
498 | (defun mh-msg-search-pat (n) | |
499 | ;; Return a search pattern for message N in the scan listing. | |
500 | (format mh-msg-search-regexp n)) | |
501 | ||
502 | ||
b6d4ab05 KH |
503 | (defun mh-get-profile-field (field) |
504 | ;; Find and return the value of FIELD in the current buffer. | |
505 | ;; Returns NIL if the field is not in the buffer. | |
506 | (let ((case-fold-search t)) | |
507 | (goto-char (point-min)) | |
508 | (cond ((not (re-search-forward (format "^%s" field) nil t)) nil) | |
509 | ((looking-at "[\t ]*$") nil) | |
510 | (t | |
511 | (re-search-forward "[\t ]*\\([^\t \n].*\\)$" nil t) | |
512 | (let ((start (match-beginning 1))) | |
513 | (end-of-line) | |
514 | (buffer-substring start (point))))))) | |
515 | ||
b3470e4c | 516 | (defvar mua-paradigm "MH-E") ;from mua.el |
b6d4ab05 | 517 | |
c26cf6c8 RS |
518 | (defun mh-find-path () |
519 | ;; Set mh-progs and mh-lib. | |
520 | ;; (This step is necessary if MH was installed after this Emacs was dumped.) | |
b6d4ab05 KH |
521 | ;; From profile file, set mh-user-path, mh-draft-folder, |
522 | ;; mh-unseen-seq, mh-previous-seq, mh-inbox. | |
c26cf6c8 RS |
523 | (mh-find-progs) |
524 | (save-excursion | |
525 | ;; Be sure profile is fully expanded before switching buffers | |
526 | (let ((profile (expand-file-name (or (getenv "MH") "~/.mh_profile")))) | |
b6d4ab05 | 527 | (set-buffer (get-buffer-create mh-temp-buffer)) |
c26cf6c8 RS |
528 | (setq buffer-offer-save nil) ;for people who set default to t |
529 | (erase-buffer) | |
530 | (condition-case err | |
531 | (insert-file-contents profile) | |
532 | (file-error | |
533 | (mh-install profile err))) | |
b6d4ab05 KH |
534 | (setq mh-user-path (mh-get-profile-field "Path:")) |
535 | (if (not mh-user-path) | |
c26cf6c8 RS |
536 | (setq mh-user-path "Mail")) |
537 | (setq mh-user-path | |
538 | (file-name-as-directory | |
539 | (expand-file-name mh-user-path (expand-file-name "~")))) | |
b6d4ab05 KH |
540 | (setq mh-draft-folder (mh-get-profile-field "Draft-Folder:")) |
541 | (if mh-draft-folder | |
542 | (progn | |
543 | (if (not (mh-folder-name-p mh-draft-folder)) | |
544 | (setq mh-draft-folder (format "+%s" mh-draft-folder))) | |
545 | (if (not (file-exists-p (mh-expand-file-name mh-draft-folder))) | |
546 | (error "Draft folder \"%s\" not found. Create it and try again." | |
547 | (mh-expand-file-name mh-draft-folder))))) | |
548 | (setq mh-inbox (mh-get-profile-field "Inbox:")) | |
549 | (cond ((not mh-inbox) | |
550 | (setq mh-inbox "+inbox")) | |
551 | ((not (mh-folder-name-p mh-inbox)) | |
552 | (setq mh-inbox (format "+%s" mh-inbox)))) | |
553 | (setq mh-unseen-seq (mh-get-profile-field "Unseen-Sequence:")) | |
554 | (if mh-unseen-seq | |
555 | (setq mh-unseen-seq (intern mh-unseen-seq)) | |
556 | (setq mh-unseen-seq 'unseen)) ;old MH default? | |
557 | (setq mh-previous-seq (mh-get-profile-field "Previous-Sequence:")) | |
558 | (if mh-previous-seq | |
559 | (setq mh-previous-seq (intern mh-previous-seq))) | |
b3470e4c | 560 | (setq mua-paradigm "MH-E") |
b6d4ab05 | 561 | (run-hooks 'mh-find-path-hook)))) |
c26cf6c8 RS |
562 | |
563 | (defun mh-find-progs () | |
564 | (or (file-exists-p (expand-file-name "inc" mh-progs)) | |
565 | (setq mh-progs | |
566 | (or (mh-path-search exec-path "inc") | |
c919c21a RS |
567 | (mh-path-search '("/usr/local/bin/mh/" |
568 | "/usr/local/mh/" | |
569 | "/usr/bin/mh/" ;Ultrix 4.2 | |
c26cf6c8 | 570 | "/usr/new/mh/" ;Ultrix <4.2 |
b6d4ab05 KH |
571 | "/usr/contrib/mh/bin/" ;BSDI |
572 | "/usr/local/bin/" | |
c919c21a | 573 | ) |
c26cf6c8 | 574 | "inc") |
b6d4ab05 | 575 | mh-progs |
c26cf6c8 RS |
576 | "/usr/local/bin/"))) |
577 | (or (file-exists-p (expand-file-name "mhl" mh-lib)) | |
578 | (setq mh-lib | |
c919c21a | 579 | (or (mh-path-search '("/usr/local/lib/mh/" |
b6d4ab05 KH |
580 | "/usr/local/mh/lib/" |
581 | "/usr/local/bin/mh/" | |
c919c21a | 582 | "/usr/lib/mh/" ;Ultrix 4.2 |
c26cf6c8 | 583 | "/usr/new/lib/mh/" ;Ultrix <4.2 |
b6d4ab05 | 584 | "/usr/contrib/mh/lib/" ;BSDI |
c919c21a | 585 | ) |
c26cf6c8 RS |
586 | "mhl") |
587 | (mh-path-search exec-path "mhl") ;unlikely | |
b6d4ab05 KH |
588 | mh-lib |
589 | "/usr/local/lib/mh/")))) | |
c26cf6c8 RS |
590 | |
591 | (defun mh-path-search (path file) | |
592 | ;; Search PATH, a list of directory names, for FILE. | |
593 | ;; Returns the element of PATH that contains FILE, or nil if not found. | |
594 | (while (and path | |
595 | (not (file-exists-p (expand-file-name file (car path))))) | |
596 | (setq path (cdr path))) | |
597 | (car path)) | |
598 | ||
b3470e4c KH |
599 | (defvar mh-no-install nil) ;do not run install-mh |
600 | ||
c26cf6c8 RS |
601 | (defun mh-install (profile error-val) |
602 | ;; Called to do error recovery if we fail to read the profile file. | |
603 | ;; If possible, initialize the MH environment. | |
604 | (if (or (getenv "MH") | |
b3470e4c KH |
605 | (file-exists-p profile) |
606 | mh-no-install) | |
607 | (signal (car error-val) | |
608 | (list (format "Cannot read MH profile \"%s\"" profile) | |
609 | (car (cdr (cdr error-val)))))) | |
c26cf6c8 RS |
610 | ;; The "install-mh" command will output a short note which |
611 | ;; mh-exec-cmd will display to the user. | |
b6d4ab05 KH |
612 | ;; The MH 5 version of install-mh might try prompt the user |
613 | ;; for information, which would fail here. | |
c26cf6c8 RS |
614 | (mh-exec-cmd (expand-file-name "install-mh" mh-lib) "-auto") |
615 | ;; now try again to read the profile file | |
616 | (erase-buffer) | |
617 | (condition-case err | |
618 | (insert-file-contents profile) | |
619 | (file-error | |
b3470e4c KH |
620 | (signal (car err) ;re-signal with more specific msg |
621 | (list (format "Cannot read MH profile \"%s\"" profile) | |
622 | (car (cdr (cdr err)))))))) | |
c26cf6c8 RS |
623 | |
624 | ||
625 | (defun mh-set-folder-modified-p (flag) | |
b6d4ab05 | 626 | ;; Mark current folder as modified or unmodified according to FLAG. |
c26cf6c8 RS |
627 | (set-buffer-modified-p flag)) |
628 | ||
629 | ||
630 | (defun mh-find-seq (name) (assoc name mh-seq-list)) | |
631 | ||
c26cf6c8 | 632 | (defun mh-seq-to-msgs (seq) |
b6d4ab05 | 633 | ;; Return a list of the messages in SEQUENCE. |
c26cf6c8 RS |
634 | (mh-seq-msgs (mh-find-seq seq))) |
635 | ||
636 | ||
637 | (defun mh-add-msgs-to-seq (msgs seq &optional internal-flag) | |
638 | ;; Add MESSAGE(s) to the SEQUENCE. If optional FLAG is non-nil, do not mark | |
639 | ;; the message in the scan listing or inform MH of the addition. | |
640 | (let ((entry (mh-find-seq seq))) | |
641 | (if (and msgs (atom msgs)) (setq msgs (list msgs))) | |
642 | (if (null entry) | |
643 | (setq mh-seq-list (cons (mh-make-seq seq msgs) mh-seq-list)) | |
b6d4ab05 | 644 | (if msgs (setcdr entry (append msgs (mh-seq-msgs entry))))) |
c26cf6c8 RS |
645 | (cond ((not internal-flag) |
646 | (mh-add-to-sequence seq msgs) | |
b6d4ab05 | 647 | (mh-notate-seq seq mh-note-seq (1+ mh-cmd-note)))))) |
c26cf6c8 RS |
648 | |
649 | (autoload 'mh-add-to-sequence "mh-seq") | |
650 | (autoload 'mh-notate-seq "mh-seq") | |
651 | (autoload 'mh-read-seq-default "mh-seq") | |
652 | (autoload 'mh-map-to-seq-msgs "mh-seq") | |
653 | ||
654 | ||
655 | (defun mh-set-mode-name (mode-name-string) | |
656 | ;; Set the mode-name and ensure that the mode line is updated. | |
657 | (setq mode-name mode-name-string) | |
c80ababd | 658 | (force-mode-line-update t)) |
c26cf6c8 RS |
659 | |
660 | ||
661 | (defun mh-prompt-for-folder (prompt default can-create) | |
662 | ;; Prompt for a folder name with PROMPT. Returns the folder's name as a | |
663 | ;; string. DEFAULT is used if the folder exists and the user types return. | |
664 | ;; If the CAN-CREATE flag is t, then a non-existent folder is made. | |
665 | (if (null default) | |
666 | (setq default "")) | |
667 | (let* ((prompt (format "%s folder%s" prompt | |
668 | (if (equal "" default) | |
669 | "? " | |
670 | (format " [%s]? " default)))) | |
671 | read-name folder-name) | |
672 | (if (null mh-folder-list) | |
673 | (mh-set-folder-list)) | |
674 | (while (and (setq read-name (completing-read prompt mh-folder-list | |
675 | nil nil "+")) | |
676 | (equal read-name "") | |
677 | (equal default ""))) | |
678 | (cond ((or (equal read-name "") (equal read-name "+")) | |
679 | (setq read-name default)) | |
680 | ((not (mh-folder-name-p read-name)) | |
681 | (setq read-name (format "+%s" read-name)))) | |
682 | (setq folder-name read-name) | |
683 | (cond ((and (> (length folder-name) 0) | |
684 | (eql (aref folder-name (1- (length folder-name))) ?/)) | |
685 | (setq folder-name (substring folder-name 0 -1)))) | |
686 | (let ((new-file-p (not (file-exists-p (mh-expand-file-name folder-name))))) | |
687 | (cond ((and new-file-p | |
688 | (y-or-n-p | |
689 | (format "Folder %s does not exist. Create it? " folder-name))) | |
690 | (message "Creating %s" folder-name) | |
691 | (call-process "mkdir" nil nil nil (mh-expand-file-name folder-name)) | |
692 | (message "Creating %s...done" folder-name) | |
b6d4ab05 KH |
693 | (setq mh-folder-list (cons (list read-name) mh-folder-list)) |
694 | (run-hooks 'mh-folder-list-change-hook)) | |
c26cf6c8 RS |
695 | (new-file-p |
696 | (error "Folder %s is not created" folder-name)) | |
b3470e4c KH |
697 | ((not (file-directory-p (mh-expand-file-name folder-name))) |
698 | (error "\"%s\" is not a directory" | |
699 | (mh-expand-file-name folder-name))) | |
c26cf6c8 RS |
700 | ((and (null (assoc read-name mh-folder-list)) |
701 | (null (assoc (concat read-name "/") mh-folder-list))) | |
b6d4ab05 KH |
702 | (setq mh-folder-list (cons (list read-name) mh-folder-list)) |
703 | (run-hooks 'mh-folder-list-change-hook)))) | |
c26cf6c8 RS |
704 | folder-name)) |
705 | ||
706 | ||
b6d4ab05 | 707 | (defvar mh-make-folder-list-process nil) ;The background process collecting the folder list. |
c26cf6c8 | 708 | |
b6d4ab05 | 709 | (defvar mh-folder-list-temp nil) ;mh-folder-list as it is being built. |
c26cf6c8 | 710 | |
b6d4ab05 | 711 | (defvar mh-folder-list-partial-line "") ;Start of last incomplete line from folder process. |
c26cf6c8 RS |
712 | |
713 | (defun mh-set-folder-list () | |
b6d4ab05 KH |
714 | ;; Sets mh-folder-list correctly. |
715 | ;; A useful function for the command line or for when you need to | |
716 | ;; sync by hand. Format is in a form suitable for completing read. | |
c26cf6c8 RS |
717 | (message "Collecting folder names...") |
718 | (if (not mh-make-folder-list-process) | |
719 | (mh-make-folder-list-background)) | |
720 | (while (eq (process-status mh-make-folder-list-process) 'run) | |
721 | (accept-process-output mh-make-folder-list-process)) | |
722 | (setq mh-folder-list mh-folder-list-temp) | |
b6d4ab05 | 723 | (run-hooks 'mh-folder-list-change-hook) |
c26cf6c8 RS |
724 | (setq mh-folder-list-temp nil) |
725 | (delete-process mh-make-folder-list-process) | |
726 | (setq mh-make-folder-list-process nil) | |
727 | (message "Collecting folder names...done")) | |
728 | ||
729 | (defun mh-make-folder-list-background () | |
b6d4ab05 KH |
730 | ;; Start a background process to compute a list of the user's folders. |
731 | ;; Call mh-set-folder-list to wait for the result. | |
c26cf6c8 RS |
732 | (cond |
733 | ((not mh-make-folder-list-process) | |
b3470e4c | 734 | (mh-find-path) |
c26cf6c8 RS |
735 | (let ((process-connection-type nil)) |
736 | (setq mh-make-folder-list-process | |
737 | (start-process "folders" nil (expand-file-name "folders" mh-progs) | |
738 | "-fast" | |
739 | (if mh-recursive-folders | |
740 | "-recurse" | |
741 | "-norecurse"))) | |
742 | (set-process-filter mh-make-folder-list-process | |
743 | 'mh-make-folder-list-filter) | |
744 | (process-kill-without-query mh-make-folder-list-process))))) | |
745 | ||
746 | (defun mh-make-folder-list-filter (process output) | |
747 | ;; parse output from "folders -fast" | |
748 | (let ((position 0) | |
b3470e4c KH |
749 | line-end |
750 | new-folder | |
751 | (prevailing-match-data (match-data))) | |
752 | (unwind-protect | |
753 | ;; make sure got complete line | |
754 | (while (setq line-end (string-match "\n" output position)) | |
755 | (setq new-folder (format "+%s%s" | |
756 | mh-folder-list-partial-line | |
757 | (substring output position line-end))) | |
758 | (setq mh-folder-list-partial-line "") | |
759 | ;; is new folder a subfolder of previous? | |
760 | (if (and mh-folder-list-temp | |
761 | (string-match | |
762 | (regexp-quote | |
763 | (concat (car (car mh-folder-list-temp)) "/")) | |
764 | new-folder)) | |
765 | ;; append slash to parent folder for better completion | |
766 | ;; (undone by mh-prompt-for-folder) | |
767 | (setq mh-folder-list-temp | |
768 | (cons | |
769 | (list new-folder) | |
770 | (cons | |
771 | (list (concat (car (car mh-folder-list-temp)) "/")) | |
772 | (cdr mh-folder-list-temp)))) | |
c26cf6c8 RS |
773 | (setq mh-folder-list-temp |
774 | (cons (list new-folder) | |
b3470e4c KH |
775 | mh-folder-list-temp))) |
776 | (setq position (1+ line-end))) | |
777 | (store-match-data prevailing-match-data)) | |
c26cf6c8 RS |
778 | (setq mh-folder-list-partial-line (substring output position)))) |
779 | ||
780 | ||
781 | (defun mh-folder-name-p (name) | |
782 | ;; Return non-NIL if NAME is possibly the name of a folder. | |
783 | ;; A name (a string or symbol) can be a folder name if it begins with "+". | |
784 | (if (symbolp name) | |
785 | (eql (aref (symbol-name name) 0) ?+) | |
786 | (and (> (length name) 0) | |
787 | (eql (aref name 0) ?+)))) | |
788 | ||
789 | ||
790 | ;;; Issue commands to MH. | |
791 | ||
792 | ||
793 | (defun mh-exec-cmd (command &rest args) | |
794 | ;; Execute mh-command COMMAND with ARGS. | |
b6d4ab05 | 795 | ;; The side effects are what is desired. |
c26cf6c8 | 796 | ;; Any output is assumed to be an error and is shown to the user. |
b6d4ab05 | 797 | ;; The output is not read or parsed by mh-e. |
c26cf6c8 | 798 | (save-excursion |
b6d4ab05 | 799 | (set-buffer (get-buffer-create mh-temp-buffer)) |
c26cf6c8 RS |
800 | (erase-buffer) |
801 | (apply 'call-process | |
802 | (expand-file-name command mh-progs) nil t nil | |
803 | (mh-list-to-string args)) | |
804 | (if (> (buffer-size) 0) | |
805 | (save-window-excursion | |
b6d4ab05 | 806 | (switch-to-buffer-other-window mh-temp-buffer) |
c26cf6c8 RS |
807 | (sit-for 5))))) |
808 | ||
809 | ||
810 | (defun mh-exec-cmd-error (env command &rest args) | |
811 | ;; In environment ENV, execute mh-command COMMAND with args ARGS. | |
812 | ;; ENV is nil or a string of space-separated "var=value" elements. | |
813 | ;; Signals an error if process does not complete successfully. | |
814 | (save-excursion | |
b6d4ab05 | 815 | (set-buffer (get-buffer-create mh-temp-buffer)) |
c26cf6c8 RS |
816 | (erase-buffer) |
817 | (let ((status | |
818 | (if env | |
819 | ;; the shell hacks necessary here shows just how broken Unix is | |
820 | (apply 'call-process "/bin/sh" nil t nil "-c" | |
821 | (format "%s %s ${1+\"$@\"}" | |
822 | env | |
823 | (expand-file-name command mh-progs)) | |
824 | command | |
825 | (mh-list-to-string args)) | |
826 | (apply 'call-process | |
827 | (expand-file-name command mh-progs) nil t nil | |
828 | (mh-list-to-string args))))) | |
829 | (mh-handle-process-error command status)))) | |
830 | ||
831 | ||
832 | (defun mh-exec-cmd-daemon (command &rest args) | |
b6d4ab05 KH |
833 | ;; Execute MH command COMMAND with ARGS in the background. |
834 | ;; Any output from command is displayed in an asynchronous pop-up window. | |
c26cf6c8 | 835 | (save-excursion |
b6d4ab05 | 836 | (set-buffer (get-buffer-create mh-temp-buffer)) |
c26cf6c8 RS |
837 | (erase-buffer)) |
838 | (let* ((process-connection-type nil) | |
839 | (process (apply 'start-process | |
840 | command nil | |
841 | (expand-file-name command mh-progs) | |
842 | (mh-list-to-string args)))) | |
843 | (set-process-filter process 'mh-process-daemon))) | |
844 | ||
845 | (defun mh-process-daemon (process output) | |
846 | ;; Process daemon that puts output into a temporary buffer. | |
b6d4ab05 | 847 | (set-buffer (get-buffer-create mh-temp-buffer)) |
c26cf6c8 | 848 | (insert-before-markers output) |
b6d4ab05 | 849 | (display-buffer mh-temp-buffer)) |
c26cf6c8 RS |
850 | |
851 | ||
852 | (defun mh-exec-cmd-quiet (raise-error command &rest args) | |
853 | ;; Args are RAISE-ERROR, COMMANDS, ARGS.... | |
854 | ;; Execute MH command COMMAND with ARGS. ARGS is a list of strings. | |
855 | ;; Return at start of mh-temp buffer, where output can be parsed and used. | |
856 | ;; Returns value of call-process, which is 0 for success, | |
857 | ;; unless RAISE-ERROR is non-nil, in which case an error is signaled | |
858 | ;; if call-process returns non-0. | |
b6d4ab05 | 859 | (set-buffer (get-buffer-create mh-temp-buffer)) |
c26cf6c8 RS |
860 | (erase-buffer) |
861 | (let ((value | |
862 | (apply 'call-process | |
863 | (expand-file-name command mh-progs) nil t nil | |
864 | args))) | |
865 | (goto-char (point-min)) | |
866 | (if raise-error | |
867 | (mh-handle-process-error command value) | |
868 | value))) | |
869 | ||
870 | ||
871 | (defun mh-exec-cmd-output (command display &rest args) | |
872 | ;; Execute MH command COMMAND with DISPLAY flag and ARGS. | |
873 | ;; Put the output into buffer after point. Set mark after inserted text. | |
b6d4ab05 | 874 | ;; Output is expected to be shown to user, not parsed by mh-e. |
c26cf6c8 RS |
875 | (push-mark (point) t) |
876 | (apply 'call-process | |
877 | (expand-file-name command mh-progs) nil t display | |
878 | (mh-list-to-string args)) | |
879 | (exchange-point-and-mark)) | |
880 | ||
881 | ||
882 | (defun mh-exec-lib-cmd-output (command &rest args) | |
883 | ;; Execute MH library command COMMAND with ARGS. | |
884 | ;; Put the output into buffer after point. Set mark after inserted text. | |
885 | (apply 'mh-exec-cmd-output (expand-file-name command mh-lib) nil args)) | |
886 | ||
887 | ||
888 | (defun mh-handle-process-error (command status) | |
889 | ;; Raise error if COMMAND returned non-0 STATUS, otherwise return STATUS. | |
890 | ;; STATUS is return value from call-process. | |
891 | ;; Program output is in current buffer. | |
b6d4ab05 | 892 | ;; If output is too long to include in error message, display the buffer. |
c26cf6c8 RS |
893 | (cond ((eql status 0) ;success |
894 | status) | |
895 | ((stringp status) ;kill string | |
896 | (error (format "%s: %s" command status))) | |
897 | (t ;exit code | |
898 | (cond | |
899 | ((= (buffer-size) 0) ;program produced no error message | |
900 | (error (format "%s: exit code %d" command status))) | |
901 | (t | |
902 | ;; will error message fit on one line? | |
903 | (goto-line 2) | |
904 | (if (and (< (buffer-size) (screen-width)) | |
905 | (eobp)) | |
906 | (error (buffer-substring 1 (progn (goto-char 1) | |
907 | (end-of-line) | |
908 | (point)))) | |
909 | (display-buffer (current-buffer)) | |
910 | (error (format | |
911 | "%s failed with status %d. See error message in other window." | |
912 | command status)))))))) | |
913 | ||
914 | ||
915 | (defun mh-expand-file-name (filename &optional default) | |
b6d4ab05 KH |
916 | ;; Just like `expand-file-name', but also handles MH folder names. |
917 | ;; Assumes that any filename that starts with '+' is a folder name. | |
c26cf6c8 RS |
918 | (if (mh-folder-name-p filename) |
919 | (expand-file-name (substring filename 1) mh-user-path) | |
920 | (expand-file-name filename default))) | |
921 | ||
922 | ||
923 | (defun mh-list-to-string (l) | |
924 | ;; Flattens the list L and makes every element of the new list into a string. | |
925 | (nreverse (mh-list-to-string-1 l))) | |
926 | ||
927 | (defun mh-list-to-string-1 (l) | |
928 | (let ((new-list nil)) | |
929 | (while l | |
930 | (cond ((null (car l))) | |
931 | ((symbolp (car l)) | |
932 | (setq new-list (cons (symbol-name (car l)) new-list))) | |
933 | ((numberp (car l)) | |
934 | (setq new-list (cons (int-to-string (car l)) new-list))) | |
935 | ((equal (car l) "")) | |
936 | ((stringp (car l)) (setq new-list (cons (car l) new-list))) | |
937 | ((listp (car l)) | |
938 | (setq new-list (nconc (mh-list-to-string-1 (car l)) | |
939 | new-list))) | |
940 | (t (error "Bad element in mh-list-to-string: %s" (car l)))) | |
941 | (setq l (cdr l))) | |
942 | new-list)) | |
943 | ||
944 | (provide 'mh-utils) | |
945 | ||
946 | (and (not noninteractive) | |
947 | mh-auto-folder-collect | |
b3470e4c KH |
948 | (let ((mh-no-install t)) ;only get folders if MH installed |
949 | (condition-case err | |
950 | (mh-make-folder-list-background) | |
951 | (file-error)))) ;so don't complain if not installed | |
c26cf6c8 RS |
952 | |
953 | ;;; mh-utils.el ends here |