Mercurial > hg > xemacs-beta
annotate lisp/files.el @ 5569:d19b6e3bdf91
#'cl-defsubst-expand; avoid mutually-recursive symbol macros.
lisp/ChangeLog addition:
2011-09-10 Aidan Kehoe <kehoea@parhasard.net>
* cl-macs.el (cl-defsubst-expand):
Change set 2a6a8da4dd7c of
http://mid.gmane.org/19966.17522.332164.615228@parhasard.net
wasn't sufficiently comprehensive, symbol macros can be mutually
rather than simply recursive, and they can equally hang. Thanks
for the bug report, Michael Sperber, and for the test case,
Stephen Turnbull.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sat, 10 Sep 2011 13:17:29 +0100 |
| parents | 4dee0387b9de |
| children | c17a46ac63af |
| rev | line source |
|---|---|
| 428 | 1 ;;; files.el --- file input and output commands for XEmacs. |
| 2 | |
| 3 ;; Copyright (C) 1985-1987, 1992-1995, 1997 Free Software Foundation, Inc. | |
| 4 ;; Copyright (C) 1995 Sun Microsystems. | |
| 1333 | 5 ;; Copyright (C) 2001, 2002, 2003 Ben Wing. |
| 428 | 6 |
| 7 ;; Maintainer: XEmacs Development Team | |
| 8 ;; Keywords: extensions, dumped | |
| 9 | |
| 10 ;; This file is part of XEmacs. | |
| 11 | |
|
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12 ;; XEmacs is free software: you can redistribute it and/or modify it |
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13 ;; under the terms of the GNU General Public License as published by the |
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14 ;; Free Software Foundation, either version 3 of the License, or (at your |
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15 ;; option) any later version. |
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16 |
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17 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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18 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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19 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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20 ;; for more details. |
| 428 | 21 |
| 22 ;; You should have received a copy of the GNU General Public License | |
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23 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 24 |
| 1333 | 25 ;;; [[ Synched up with: FSF 20.3 (but diverging) |
| 26 ;;; Warning: Merging this file is tough. Beware.]] | |
| 27 | |
| 28 ;;; Beware of sync messages with 20.x or 21.x! (Unless I did them, of | |
| 29 ;;; course ... :-) Those who did these synchronizations did not do proper | |
| 30 ;;; jobs and often left out lots of changes. In practice you need to do a | |
| 31 ;;; line-by-line comparison, and whenever encountering differences, see | |
| 32 ;;; what FSF 19.34 looks like to see if the changes are intentional or just | |
| 33 ;;; regressions. In at least one case below, our code was unchanged from | |
| 34 ;;; FSF 19.30! --ben | |
| 35 | |
| 36 ;;; Mostly synched to FSF 21.2 by Ben Wing using a line-by-line comparison, | |
| 37 ;;; except some really hard parts that have changed almost completely. | |
| 428 | 38 |
| 39 ;;; Commentary: | |
| 40 | |
| 41 ;; This file is dumped with XEmacs. | |
| 42 | |
| 1333 | 43 ;; BEGIN SYNC WITH FSF 21.2. |
| 44 | |
| 428 | 45 ;; Defines most of XEmacs's file- and directory-handling functions, |
| 46 ;; including basic file visiting, backup generation, link handling, | |
| 47 ;; ITS-id version control, load- and write-hook handling, and the like. | |
| 48 | |
| 49 ;;; Code: | |
| 50 | |
| 51 ;; XEmacs: Avoid compilation warnings. | |
| 52 (defvar coding-system-for-read) | |
| 53 (defvar buffer-file-coding-system) | |
| 54 | |
| 55 (defgroup files nil | |
| 56 "Support editing files." | |
| 57 :group 'emacs) | |
| 58 | |
| 59 (defgroup backup nil | |
| 60 "Backups of edited data files." | |
| 61 :group 'files) | |
| 62 | |
| 63 (defgroup find-file nil | |
| 64 "Finding and editing files." | |
| 65 :group 'files) | |
| 66 | |
| 1333 | 67 ;; XEmacs: In buffer.c (also) |
| 68 (defcustom delete-auto-save-files t | |
| 69 "*Non-nil means delete auto-save file when a buffer is saved or killed. | |
| 70 | |
| 71 Note that auto-save file will not be deleted if the buffer is killed | |
| 72 when it has unsaved changes." | |
| 73 :type 'boolean | |
| 74 :group 'auto-save) | |
| 428 | 75 |
| 76 ;; FSF has automount-dir-prefix. Our directory-abbrev-alist is more general. | |
| 77 ;; note: tmp_mnt bogosity conversion is established in paths.el. | |
| 78 (defcustom directory-abbrev-alist nil | |
| 79 "*Alist of abbreviations for file directories. | |
| 80 A list of elements of the form (FROM . TO), each meaning to replace | |
| 81 FROM with TO when it appears in a directory name. | |
| 82 This replacement is done when setting up the default directory of a | |
| 83 newly visited file. *Every* FROM string should start with \\\\` or ^. | |
| 84 | |
| 1333 | 85 Do not use `~' in the TO strings. |
| 86 They should be ordinary absolute directory names. | |
| 87 | |
| 428 | 88 Use this feature when you have directories which you normally refer to |
| 89 via absolute symbolic links or to eliminate automounter mount points | |
| 90 from the beginning of your filenames. Make TO the name of the link, | |
| 91 and FROM the name it is linked to." | |
| 92 :type '(repeat (cons :format "%v" | |
| 93 :value ("\\`" . "") | |
| 94 (regexp :tag "From") | |
| 95 (regexp :tag "To"))) | |
| 96 :group 'find-file) | |
| 97 | |
| 98 (defcustom make-backup-files t | |
| 99 "*Non-nil means make a backup of a file the first time it is saved. | |
| 100 This can be done by renaming the file or by copying. | |
| 101 | |
| 102 Renaming means that XEmacs renames the existing file so that it is a | |
| 103 backup file, then writes the buffer into a new file. Any other names | |
| 104 that the old file had will now refer to the backup file. The new file | |
| 105 is owned by you and its group is defaulted. | |
| 106 | |
| 107 Copying means that XEmacs copies the existing file into the backup | |
| 108 file, then writes the buffer on top of the existing file. Any other | |
| 109 names that the old file had will now refer to the new (edited) file. | |
| 110 The file's owner and group are unchanged. | |
| 111 | |
| 112 The choice of renaming or copying is controlled by the variables | |
| 113 `backup-by-copying', `backup-by-copying-when-linked' and | |
| 1333 | 114 `backup-by-copying-when-mismatch' and |
| 115 `backup-by-copying-when-privileged-mismatch'. See also `backup-inhibited'." | |
| 428 | 116 :type 'boolean |
| 117 :group 'backup) | |
| 118 | |
| 119 ;; Do this so that local variables based on the file name | |
| 120 ;; are not overridden by the major mode. | |
| 121 (defvar backup-inhibited nil | |
| 122 "Non-nil means don't make a backup, regardless of the other parameters. | |
| 123 This variable is intended for use by making it local to a buffer. | |
| 124 But it is local only if you make it local.") | |
| 125 (put 'backup-inhibited 'permanent-local t) | |
| 126 | |
| 127 (defcustom backup-by-copying nil | |
| 128 "*Non-nil means always use copying to create backup files. | |
| 129 See documentation of variable `make-backup-files'." | |
| 130 :type 'boolean | |
| 131 :group 'backup) | |
| 132 | |
| 133 (defcustom backup-by-copying-when-linked nil | |
| 134 "*Non-nil means use copying to create backups for files with multiple names. | |
| 135 This causes the alternate names to refer to the latest version as edited. | |
| 136 This variable is relevant only if `backup-by-copying' is nil." | |
| 137 :type 'boolean | |
| 138 :group 'backup) | |
| 139 | |
| 140 (defcustom backup-by-copying-when-mismatch nil | |
| 141 "*Non-nil means create backups by copying if this preserves owner or group. | |
| 142 Renaming may still be used (subject to control of other variables) | |
| 143 when it would not result in changing the owner or group of the file; | |
| 144 that is, for files which are owned by you and whose group matches | |
| 145 the default for a new file created there by you. | |
| 146 This variable is relevant only if `backup-by-copying' is nil." | |
| 147 :type 'boolean | |
| 148 :group 'backup) | |
| 149 | |
| 1333 | 150 (defcustom backup-by-copying-when-privileged-mismatch 200 |
| 151 "*Non-nil means create backups by copying to preserve a privileged owner. | |
| 152 Renaming may still be used (subject to control of other variables) | |
| 153 when it would not result in changing the owner of the file or if the owner | |
| 154 has a user id greater than the value of this variable. This is useful | |
| 155 when low-numbered uid's are used for special system users (such as root) | |
| 156 that must maintain ownership of certain files. | |
| 157 This variable is relevant only if `backup-by-copying' and | |
| 158 `backup-by-copying-when-mismatch' are nil." | |
| 159 :type '(choice (const nil) integer) | |
| 160 :group 'backup) | |
| 161 | |
| 162 (defun normal-backup-enable-predicate (name) | |
| 163 "Default `backup-enable-predicate' function. | |
| 4266 | 164 Checks for files in the directory returned by `temp-directory' or specified |
| 165 by `small-temporary-file-directory'." | |
| 1333 | 166 (let ((temporary-file-directory (temp-directory))) |
| 167 (not (or (let ((comp (compare-strings temporary-file-directory 0 nil | |
| 168 name 0 nil))) | |
| 169 ;; Directory is under temporary-file-directory. | |
| 170 (and (not (eq comp t)) | |
| 171 (< comp (- (length temporary-file-directory))))) | |
| 172 (if small-temporary-file-directory | |
| 173 (let ((comp (compare-strings small-temporary-file-directory | |
| 174 0 nil | |
| 175 name 0 nil))) | |
| 176 ;; Directory is under small-temporary-file-directory. | |
| 177 (and (not (eq comp t)) | |
| 178 (< comp (- (length small-temporary-file-directory)))))))))) | |
| 179 | |
| 180 (defvar backup-enable-predicate 'normal-backup-enable-predicate | |
| 428 | 181 "Predicate that looks at a file name and decides whether to make backups. |
| 182 Called with an absolute file name as argument, it returns t to enable backup.") | |
| 183 | |
| 184 (defcustom buffer-offer-save nil | |
| 1333 | 185 "*Non-nil in a buffer means always offer to save buffer on exit. |
| 186 Do so even if the buffer is not visiting a file. | |
| 428 | 187 Automatically local in all buffers." |
| 188 :type 'boolean | |
| 189 :group 'find-file) | |
| 190 (make-variable-buffer-local 'buffer-offer-save) | |
| 191 | |
| 192 ;; FSF uses normal defconst | |
| 193 (defvaralias 'find-file-visit-truename 'find-file-use-truenames) | |
| 194 (defvaralias 'find-file-existing-other-name 'find-file-compare-truenames) | |
| 195 | |
| 196 (defcustom revert-without-query nil | |
| 197 "*Specify which files should be reverted without query. | |
| 198 The value is a list of regular expressions. | |
| 199 If the file name matches one of these regular expressions, | |
| 200 then `revert-buffer' reverts the file without querying | |
| 201 if the file has changed on disk and you have not edited the buffer." | |
| 202 :type '(repeat (regexp "")) | |
| 203 :group 'find-file) | |
| 204 | |
| 205 (defvar buffer-file-number nil | |
| 206 "The device number and file number of the file visited in the current buffer. | |
| 207 The value is a list of the form (FILENUM DEVNUM). | |
| 208 This pair of numbers uniquely identifies the file. | |
| 209 If the buffer is visiting a new file, the value is nil.") | |
| 210 (make-variable-buffer-local 'buffer-file-number) | |
| 211 (put 'buffer-file-number 'permanent-local t) | |
| 212 | |
| 213 (defvar buffer-file-numbers-unique (not (memq system-type '(windows-nt))) | |
| 214 "Non-nil means that buffer-file-number uniquely identifies files.") | |
| 215 | |
| 1333 | 216 ;; FSF 21.2. We use (temp-directory). |
| 217 ; (defvar temporary-file-directory | |
| 218 ; (file-name-as-directory | |
| 219 ; (cond ((memq system-type '(ms-dos windows-nt)) | |
| 220 ; (or (getenv "TEMP") (getenv "TMPDIR") (getenv "TMP") "c:/temp")) | |
| 221 ; ((memq system-type '(vax-vms axp-vms)) | |
| 222 ; (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "SYS$SCRATCH:")) | |
| 223 ; (t | |
| 224 ; (or (getenv "TMPDIR") (getenv "TMP") (getenv "TEMP") "/tmp")))) | |
| 225 ; "The directory for writing temporary files.") | |
| 226 | |
| 227 (defvar small-temporary-file-directory | |
| 228 (if (eq system-type 'ms-dos) (getenv "TMPDIR")) | |
| 229 "The directory for writing small temporary files. | |
| 230 If non-nil, this directory is used instead of `temporary-file-directory' | |
| 231 by programs that create small temporary files. This is for systems that | |
| 232 have fast storage with limited space, such as a RAM disk.") | |
| 233 | |
| 234 ; (defvar file-name-invalid-regexp | |
| 235 ; (cond ((and (eq system-type 'ms-dos) (not (msdos-long-file-names))) | |
| 236 ; (concat "^\\([^A-Z[-`a-z]\\|..+\\)?:\\|" ; colon except after drive | |
| 237 ; "[+, ;=|<>\"?*]\\|\\[\\|\\]\\|" ; invalid characters | |
| 238 ; "[\000-\031]\\|" ; control characters | |
| 239 ; "\\(/\\.\\.?[^/]\\)\\|" ; leading dots | |
| 240 ; "\\(/[^/.]+\\.[^/.]*\\.\\)")) ; more than a single dot | |
| 241 ; ((memq system-type '(ms-dos windows-nt)) | |
| 242 ; (concat "^\\([^A-Z[-`a-z]\\|..+\\)?:\\|" ; colon except after drive | |
| 243 ; "[|<>\"?*\000-\031]")) ; invalid characters | |
| 244 ; (t "[\000]")) | |
| 245 ; "Regexp recognizing file names which aren't allowed by the filesystem.") | |
| 246 | |
| 428 | 247 (defcustom file-precious-flag nil |
| 248 "*Non-nil means protect against I/O errors while saving files. | |
| 249 Some modes set this non-nil in particular buffers. | |
| 250 | |
| 251 This feature works by writing the new contents into a temporary file | |
| 252 and then renaming the temporary file to replace the original. | |
| 253 In this way, any I/O error in writing leaves the original untouched, | |
| 254 and there is never any instant where the file is nonexistent. | |
| 255 | |
| 256 Note that this feature forces backups to be made by copying. | |
| 257 Yet, at the same time, saving a precious file | |
| 258 breaks any hard links between it and other files." | |
| 259 :type 'boolean | |
| 260 :group 'backup) | |
| 261 | |
| 262 (defcustom version-control nil | |
| 263 "*Control use of version numbers for backup files. | |
| 264 t means make numeric backup versions unconditionally. | |
| 265 nil means make them for files that have some already. | |
| 266 `never' means do not make them." | |
| 1333 | 267 :type '(choice (const :tag "Never" never) |
| 268 (const :tag "If existing" nil) | |
| 269 (other :tag "Always" t)) | |
| 428 | 270 :group 'backup |
| 271 :group 'vc) | |
| 272 | |
| 273 ;; This is now defined in efs. | |
| 1333 | 274 ; (defcustom dired-kept-versions 2 |
| 275 ; "*When cleaning directory, number of versions to keep." | |
| 276 ; :type 'integer | |
| 277 ; :group 'backup | |
| 278 ; :group 'dired) | |
| 428 | 279 |
| 2103 | 280 (defcustom delete-old-versions (when noninteractive 'leave) |
| 428 | 281 "*If t, delete excess backup versions silently. |
| 282 If nil, ask confirmation. Any other value prevents any trimming." | |
| 283 :type '(choice (const :tag "Delete" t) | |
| 284 (const :tag "Ask" nil) | |
| 285 (sexp :tag "Leave" :format "%t\n" other)) | |
| 286 :group 'backup) | |
| 287 | |
| 288 (defcustom kept-old-versions 2 | |
| 289 "*Number of oldest versions to keep when a new numbered backup is made." | |
| 290 :type 'integer | |
| 291 :group 'backup) | |
| 292 | |
| 293 (defcustom kept-new-versions 2 | |
| 294 "*Number of newest versions to keep when a new numbered backup is made. | |
| 295 Includes the new backup. Must be > 0" | |
| 296 :type 'integer | |
| 297 :group 'backup) | |
| 298 | |
| 299 (defcustom require-final-newline nil | |
| 300 "*Value of t says silently ensure a file ends in a newline when it is saved. | |
| 301 Non-nil but not t says ask user whether to add a newline when there isn't one. | |
| 302 nil means don't add newlines." | |
| 303 :type '(choice (const :tag "Off" nil) | |
| 304 (const :tag "Add" t) | |
| 305 (sexp :tag "Ask" :format "%t\n" ask)) | |
| 306 :group 'editing-basics) | |
| 307 | |
| 308 (defcustom auto-save-default t | |
| 309 "*Non-nil says by default do auto-saving of every file-visiting buffer." | |
| 310 :type 'boolean | |
| 311 :group 'auto-save) | |
| 312 | |
| 313 (defcustom auto-save-visited-file-name nil | |
| 314 "*Non-nil says auto-save a buffer in the file it is visiting, when practical. | |
| 315 Normally auto-save files are written under other names." | |
| 316 :type 'boolean | |
| 317 :group 'auto-save) | |
| 318 | |
| 1333 | 319 (defcustom auto-save-file-name-transforms |
| 320 `(("\\`/[^/]*:\\(.+/\\)*\\(.*\\)" | |
| 321 ,(expand-file-name "\\2" (temp-directory)))) | |
| 322 "*Transforms to apply to buffer file name before making auto-save file name. | |
| 323 Each transform is a list (REGEXP REPLACEMENT): | |
| 324 REGEXP is a regular expression to match against the file name. | |
| 325 If it matches, `replace-match' is used to replace the | |
| 326 matching part with REPLACEMENT. | |
| 327 All the transforms in the list are tried, in the order they are listed. | |
| 328 When one transform applies, its result is final; | |
| 329 no further transforms are tried. | |
| 330 | |
| 4266 | 331 The default value is set up to put the auto-save file into the temporary |
| 332 directory (see the function `temp-directory') for editing a remote file." | |
| 1333 | 333 :group 'auto-save |
| 334 :type '(repeat (list (string :tag "Regexp") (string :tag "Replacement"))) | |
| 335 ;:version "21.1" | |
| 336 ) | |
| 337 | |
| 428 | 338 (defcustom save-abbrevs nil |
| 1333 | 339 "*Non-nil means save word abbrevs too when files are saved. |
| 340 If `silently', don't ask the user before saving. | |
| 1337 | 341 Loading an abbrev file sets this to t." |
| 1333 | 342 :type '(choice (const t) (const nil) (const silently)) |
| 1337 | 343 :group 'abbrev) |
| 344 | |
| 428 | 345 (defcustom find-file-run-dired t |
| 1333 | 346 "*Non-nil means allow `find-file' to visit directories. |
| 347 To visit the directory, `find-file' runs `find-directory-functions'." | |
| 348 :type 'boolean | |
| 349 :group 'find-file) | |
| 350 | |
| 351 (defcustom find-directory-functions '(cvs-dired-noselect dired-noselect) | |
| 352 "*List of functions to try in sequence to visit a directory. | |
| 353 Each function is called with the directory name as the sole argument | |
| 354 and should return either a buffer or nil." | |
| 355 :type '(hook :options (cvs-dired-noselect dired-noselect)) | |
| 428 | 356 :group 'find-file) |
| 357 | |
| 358 ;;;It is not useful to make this a local variable. | |
| 359 ;;;(put 'find-file-not-found-hooks 'permanent-local t) | |
| 360 (defvar find-file-not-found-hooks nil | |
| 361 "List of functions to be called for `find-file' on nonexistent file. | |
| 362 These functions are called as soon as the error is detected. | |
| 1333 | 363 Variable `buffer-file-name' is already set up. |
| 428 | 364 The functions are called in the order given until one of them returns non-nil.") |
| 365 | |
| 366 ;;;It is not useful to make this a local variable. | |
| 367 ;;;(put 'find-file-hooks 'permanent-local t) | |
| 368 (defvar find-file-hooks nil | |
| 369 "List of functions to be called after a buffer is loaded from a file. | |
| 370 The buffer's local variables (if any) will have been processed before the | |
| 371 functions are called.") | |
| 372 | |
| 373 (defvar write-file-hooks nil | |
| 374 "List of functions to be called before writing out a buffer to a file. | |
| 375 If one of them returns non-nil, the file is considered already written | |
| 376 and the rest are not called. | |
| 377 These hooks are considered to pertain to the visited file. | |
| 1333 | 378 So any buffer-local binding of `write-file-hooks' is |
| 379 discarded if you change the visited file name with \\[set-visited-file-name]. | |
| 380 | |
| 381 Don't make this variable buffer-local; instead, use `local-write-file-hooks'. | |
| 428 | 382 See also `write-contents-hooks' and `continue-save-buffer'.") |
| 383 ;;; However, in case someone does make it local... | |
| 384 (put 'write-file-hooks 'permanent-local t) | |
| 385 | |
| 386 (defvar local-write-file-hooks nil | |
| 387 "Just like `write-file-hooks', except intended for per-buffer use. | |
| 388 The functions in this list are called before the ones in | |
| 389 `write-file-hooks'. | |
| 390 | |
| 391 This variable is meant to be used for hooks that have to do with a | |
| 392 particular visited file. Therefore, it is a permanent local, so that | |
| 393 changing the major mode does not clear it. However, calling | |
| 394 `set-visited-file-name' does clear it.") | |
| 395 (make-variable-buffer-local 'local-write-file-hooks) | |
| 396 (put 'local-write-file-hooks 'permanent-local t) | |
| 397 | |
| 398 | |
| 399 ;; #### think about this (added by Sun). | |
| 400 (put 'after-set-visited-file-name-hooks 'permanent-local t) | |
| 401 (defvar after-set-visited-file-name-hooks nil | |
| 402 "List of functions to be called after \\[set-visited-file-name] | |
| 403 or during \\[write-file]. | |
| 444 | 404 You can use this hook to restore local values of `write-file-hooks', |
| 405 `after-save-hook', and `revert-buffer-function', which pertain | |
| 428 | 406 to a specific file and therefore are normally killed by a rename. |
| 444 | 407 Put hooks pertaining to the buffer contents on `write-contents-hooks' |
| 408 and `revert-buffer-insert-file-contents-function'.") | |
| 428 | 409 |
| 410 (defvar write-contents-hooks nil | |
| 411 "List of functions to be called before writing out a buffer to a file. | |
| 412 If one of them returns non-nil, the file is considered already written | |
| 413 and the rest are not called. | |
| 1333 | 414 |
| 415 This variable is meant to be used for hooks that pertain to the | |
| 416 buffer's contents, not to the particular visited file; thus, | |
| 417 `set-visited-file-name' does not clear this variable; but changing the | |
| 418 major mode does clear it. | |
| 419 | |
| 420 This variable automatically becomes buffer-local whenever it is set. | |
| 421 If you use `add-hook' to add elements to the list, use nil for the | |
| 422 LOCAL argument. | |
| 423 | |
| 428 | 424 See also `write-file-hooks' and `continue-save-buffer'.") |
| 1333 | 425 (make-variable-buffer-local 'write-contents-hooks) |
| 428 | 426 |
| 427 ;; XEmacs addition | |
| 428 ;; Energize needed this to hook into save-buffer at a lower level; we need | |
| 429 ;; to provide a new output method, but don't want to have to duplicate all | |
| 430 ;; of the backup file and file modes logic.that does not occur if one uses | |
| 431 ;; a write-file-hook which returns non-nil. | |
| 432 (put 'write-file-data-hooks 'permanent-local t) | |
| 433 (defvar write-file-data-hooks nil | |
| 434 "List of functions to be called to put the bytes on disk. | |
| 435 These functions receive the name of the file to write to as argument. | |
| 436 The default behavior is to call | |
| 437 (write-region (point-min) (point-max) filename nil t) | |
| 438 If one of them returns non-nil, the file is considered already written | |
| 439 and the rest are not called. | |
| 440 These hooks are considered to pertain to the visited file. | |
| 1333 | 441 So any buffer-local binding of `write-file-data-hooks' is |
| 442 discarded if you change the visited file name with \\[set-visited-file-name]. | |
| 428 | 443 See also `write-file-hooks'.") |
| 444 | |
| 445 (defcustom enable-local-variables t | |
| 1333 | 446 "*Control use of local variables in files you visit. |
| 428 | 447 The value can be t, nil or something else. |
| 1333 | 448 A value of t means file local variables specifications are obeyed; |
| 428 | 449 nil means they are ignored; anything else means query. |
| 1333 | 450 This variable also controls use of major modes specified in |
| 451 a -*- line. | |
| 452 | |
| 453 The command \\[normal-mode], when used interactively, | |
| 454 always obeys file local variable specifications and the -*- line, | |
| 428 | 455 and ignores this variable." |
| 456 :type '(choice (const :tag "Obey" t) | |
| 457 (const :tag "Ignore" nil) | |
| 458 (sexp :tag "Query" :format "%t\n" other)) | |
| 459 :group 'find-file) | |
| 460 | |
| 1333 | 461 ; (defvar local-enable-local-variables t |
| 462 ; "Like `enable-local-variables' but meant for buffer-local bindings. | |
| 463 ; The meaningful values are nil and non-nil. The default is non-nil. | |
| 464 ; If a major mode sets this to nil, buffer-locally, then any local | |
| 465 ; variables list in the file will be ignored. | |
| 466 | |
| 467 ; This variable does not affect the use of major modes | |
| 468 ; specified in a -*- line.") | |
| 469 | |
| 428 | 470 (defcustom enable-local-eval 'maybe |
| 471 "*Control processing of the \"variable\" `eval' in a file's local variables. | |
| 472 The value can be t, nil or something else. | |
| 473 A value of t means obey `eval' variables; | |
| 474 nil means ignore them; anything else means query. | |
| 475 | |
| 476 The command \\[normal-mode] always obeys local-variables lists | |
| 477 and ignores this variable." | |
| 478 :type '(choice (const :tag "Obey" t) | |
| 479 (const :tag "Ignore" nil) | |
| 480 (sexp :tag "Query" :format "%t\n" other)) | |
| 481 :group 'find-file) | |
| 482 | |
| 483 ;; Avoid losing in versions where CLASH_DETECTION is disabled. | |
| 484 (or (fboundp 'lock-buffer) | |
| 485 (defalias 'lock-buffer 'ignore)) | |
| 486 (or (fboundp 'unlock-buffer) | |
| 487 (defalias 'unlock-buffer 'ignore)) | |
| 1333 | 488 (or (fboundp 'file-locked-p) |
| 489 (defalias 'file-locked-p 'ignore)) | |
| 490 | |
| 491 (defvar view-read-only nil | |
| 492 "*Non-nil means buffers visiting files read-only, do it in view mode.") | |
| 428 | 493 |
| 494 ;;FSFmacs bastardized ange-ftp cruft | |
| 495 ;(defun ange-ftp-completion-hook-function (op &rest args) | |
| 1333 | 496 ; "Provides support for ange-ftp host name completion. |
| 497 ;Runs the usual ange-ftp hook, but only for completion operations." | |
| 498 ; ;; Having this here avoids the need to load ange-ftp when it's not | |
| 499 ; ;; really in use. | |
| 428 | 500 ; (if (memq op '(file-name-completion file-name-all-completions)) |
| 501 ; (apply 'ange-ftp-hook-function op args) | |
| 502 ; (let ((inhibit-file-name-handlers | |
| 503 ; (cons 'ange-ftp-completion-hook-function | |
| 504 ; (and (eq inhibit-file-name-operation op) | |
| 505 ; inhibit-file-name-handlers))) | |
| 506 ; (inhibit-file-name-operation op)) | |
| 507 ; (apply op args)) | |
| 508 | |
| 1333 | 509 ;; FSF 21.2: |
| 510 ;This function's standard definition is trivial; it just returns the argument. | |
| 511 ;However, on some systems, the function is redefined with a definition | |
| 512 ;that really does change some file names to canonicalize certain | |
| 513 ;patterns and to guarantee valid names." | |
| 428 | 514 (defun convert-standard-filename (filename) |
| 464 | 515 "Convert a standard file's name to something suitable for the current OS." |
| 516 (if (eq system-type 'windows-nt) | |
| 517 (let ((name (copy-sequence filename)) | |
| 518 (start 0)) | |
| 519 ;; leave ':' if part of drive specifier | |
| 819 | 520 (if (and (> (length name) 1) |
| 521 (eq (aref name 1) ?:)) | |
| 464 | 522 (setq start 2)) |
| 523 ;; destructively replace invalid filename characters with ! | |
| 524 (while (string-match "[?*:<>|\"\000-\037]" name start) | |
| 525 (aset name (match-beginning 0) ?!) | |
| 526 (setq start (match-end 0))) | |
| 527 ;; FSF: [convert directory separators to Windows format ...] | |
| 528 ;; unneeded in XEmacs. | |
| 529 name) | |
| 530 filename)) | |
| 531 | |
| 428 | 532 |
| 533 (defun pwd () | |
| 534 "Show the current default directory." | |
| 535 (interactive nil) | |
| 536 (message "Directory %s" default-directory)) | |
| 537 | |
| 538 (defvar cd-path nil | |
| 539 "Value of the CDPATH environment variable, as a list. | |
| 540 Not actually set up until the first time you use it.") | |
| 541 | |
| 542 (defvar cdpath-previous nil | |
| 543 "Prior value of the CDPATH environment variable.") | |
| 544 | |
| 545 (defun parse-colon-path (cd-path) | |
| 546 "Explode a colon-separated search path into a list of directory names. | |
| 547 | |
| 548 If you think you want to use this, you probably don't. This function | |
| 549 is provided for backward compatibility. A more robust implementation | |
| 550 of the same functionality is available as `split-path', which see." | |
| 551 (and cd-path | |
| 552 (let (cd-list (cd-start 0) cd-colon) | |
| 553 (setq cd-path (concat cd-path path-separator)) | |
| 554 (while (setq cd-colon (string-match path-separator cd-path cd-start)) | |
| 555 (setq cd-list | |
| 556 (nconc cd-list | |
| 557 (list (if (= cd-start cd-colon) | |
| 558 nil | |
| 559 (substitute-in-file-name | |
| 560 (file-name-as-directory | |
| 561 (substring cd-path cd-start cd-colon))))))) | |
| 562 (setq cd-start (+ cd-colon 1))) | |
| 563 cd-list))) | |
| 564 | |
| 565 (defun cd-absolute (dir) | |
| 566 "Change current directory to given absolute file name DIR." | |
| 567 ;; Put the name into directory syntax now, | |
| 568 ;; because otherwise expand-file-name may give some bad results. | |
| 569 (setq dir (file-name-as-directory dir)) | |
| 570 ;; XEmacs change: stig@hackvan.com | |
| 571 (if find-file-use-truenames | |
| 572 (setq dir (file-truename dir))) | |
| 573 (setq dir (abbreviate-file-name (expand-file-name dir))) | |
| 574 (cond ((not (file-directory-p dir)) | |
| 1333 | 575 (if (file-exists-p dir) |
| 576 (error "%s is not a directory" dir) | |
| 577 (error "%s: no such directory" dir))) | |
| 428 | 578 ;; this breaks ange-ftp, which doesn't (can't?) overload `file-executable-p'. |
| 579 ;;((not (file-executable-p dir)) | |
| 580 ;; (error "Cannot cd to %s: Permission denied" dir)) | |
| 581 (t | |
| 582 (setq default-directory dir)))) | |
| 583 | |
| 584 (defun cd (dir) | |
| 585 "Make DIR become the current buffer's default directory. | |
| 586 If your environment includes a `CDPATH' variable, try each one of that | |
| 587 colon-separated list of directories when resolving a relative directory name." | |
| 588 (interactive | |
| 589 ;; XEmacs change? (read-file-name => read-directory-name) | |
| 590 (list (read-directory-name "Change default directory: " | |
| 591 default-directory default-directory | |
| 592 (and (member cd-path '(nil ("./"))) | |
| 593 (null (getenv "CDPATH")))))) | |
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594 |
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595 (let* ((cdpath-current (getenv "CDPATH")) |
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596 (trypath (if cdpath-current |
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597 (split-path (setq cdpath-previous cdpath-current)) |
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598 nil))) ; null list |
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599 (if (file-name-absolute-p dir) |
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600 (cd-absolute (expand-file-name dir)) |
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601 ;; XEmacs change. I'm not sure respecting CDPATH is the right thing to |
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602 ;; do under Windows. |
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603 (unless (and cd-path (equal cdpath-current cdpath-previous)) |
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604 (setq cd-path (or (and trypath |
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605 (mapcar #'file-name-as-directory trypath)) |
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606 (list (file-name-as-directory ""))))) |
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607 (or (some #'(lambda (x) |
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608 (let ((f (expand-file-name (concat x dir)))) |
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609 (when (file-directory-p f) (cd-absolute f)))) |
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610 cd-path) |
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611 ;; jwz: give a better error message to those of us with the |
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612 ;; good taste not to use a kludge like $CDPATH. |
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613 (if (equal cd-path '("./")) |
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614 (error "No such directory: %s" (expand-file-name dir)) |
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615 (error "Directory not found in $CDPATH: %s" dir)))))) |
| 428 | 616 |
| 617 (defun load-file (file) | |
| 618 "Load the Lisp file named FILE." | |
| 1333 | 619 ;; This is a case where .elc makes a lot of sense. |
| 620 (interactive (list (let ((completion-ignored-extensions | |
| 621 (remove ".elc" completion-ignored-extensions))) | |
| 622 (read-file-name "Load file: ")))) | |
| 428 | 623 (load (expand-file-name file) nil nil t)) |
| 624 | |
| 625 ; We now dump utils/lib-complete.el which has improved versions of this. | |
| 626 ;(defun load-library (library) | |
| 627 ; "Load the library named LIBRARY. | |
| 628 ;This is an interface to the function `load'." | |
| 629 ; (interactive "sLoad library: ") | |
| 630 ; (load library)) | |
| 631 ; | |
| 632 ;(defun find-library (library) | |
| 633 ; "Find the library of Lisp code named LIBRARY. | |
| 634 ;This searches `load-path' for a file named either \"LIBRARY\" or \"LIBRARY.el\"." | |
| 635 ; (interactive "sFind library file: ") | |
| 636 ; (let ((f (locate-file library load-path ":.el:"))) | |
| 637 ; (if f | |
| 638 ; (find-file f) | |
| 639 ; (error "Couldn't locate library %s" library)))) | |
| 640 | |
| 1333 | 641 (defun file-local-copy (file) |
| 428 | 642 "Copy the file FILE into a temporary file on this machine. |
| 643 Returns the name of the local copy, or nil, if FILE is directly | |
| 644 accessible." | |
| 1333 | 645 ;; This formerly had an optional BUFFER argument that wasn't used by |
| 646 ;; anything. | |
| 428 | 647 (let ((handler (find-file-name-handler file 'file-local-copy))) |
| 648 (if handler | |
| 649 (funcall handler 'file-local-copy file) | |
| 650 nil))) | |
| 651 | |
| 652 ;; XEmacs change block | |
| 653 ; We have this in C and use the realpath() system call. | |
| 654 | |
| 655 ;(defun file-truename (filename &optional counter prev-dirs) | |
| 656 ; [... lots of code snipped ...] | |
| 657 ; filename)) | |
| 658 | |
| 659 ;; XEmacs addition. Called from `insert-file-contents-internal' | |
| 660 ;; at the appropriate time. | |
| 661 (defun compute-buffer-file-truename (&optional buffer) | |
| 662 "Recompute BUFFER's value of `buffer-file-truename' | |
| 663 based on the current value of `buffer-file-name'. | |
| 664 BUFFER defaults to the current buffer if unspecified." | |
| 665 (save-excursion | |
| 666 (set-buffer (or buffer (current-buffer))) | |
| 667 (cond ((null buffer-file-name) | |
| 668 (setq buffer-file-truename nil)) | |
| 669 ((setq buffer-file-truename (file-truename buffer-file-name)) | |
| 670 ;; it exists, we're done. | |
| 671 nil) | |
| 672 (t | |
| 673 ;; the file doesn't exist, but maybe the directory does. | |
| 674 (let* ((dir (file-name-directory buffer-file-name)) | |
| 675 (truedir (file-truename dir))) | |
| 676 (if truedir (setq dir truedir)) | |
| 677 (setq buffer-file-truename | |
| 678 (expand-file-name (file-name-nondirectory buffer-file-name) | |
| 679 dir))))) | |
| 680 (if (and find-file-use-truenames buffer-file-truename) | |
| 681 (setq buffer-file-name (abbreviate-file-name buffer-file-truename) | |
| 682 default-directory (file-name-directory buffer-file-name))) | |
| 683 buffer-file-truename)) | |
| 684 ;; End XEmacs change block | |
| 685 | |
| 686 (defun file-chase-links (filename) | |
| 687 "Chase links in FILENAME until a name that is not a link. | |
| 688 Does not examine containing directories for links, | |
| 689 unlike `file-truename'." | |
| 690 (let (tem (count 100) (newname filename)) | |
| 691 (while (setq tem (file-symlink-p newname)) | |
| 692 (save-match-data | |
| 693 (if (= count 0) | |
| 694 (error "Apparent cycle of symbolic links for %s" filename)) | |
| 695 ;; In the context of a link, `//' doesn't mean what XEmacs thinks. | |
| 696 (while (string-match "//+" tem) | |
| 1333 | 697 (setq tem (replace-match "/" nil nil tem))) |
| 428 | 698 ;; Handle `..' by hand, since it needs to work in the |
| 699 ;; target of any directory symlink. | |
| 700 ;; This code is not quite complete; it does not handle | |
| 701 ;; embedded .. in some cases such as ./../foo and foo/bar/../../../lose. | |
| 702 (while (string-match "\\`\\.\\./" tem) ;#### Unix specific | |
| 703 (setq tem (substring tem 3)) | |
| 704 (setq newname (file-name-as-directory | |
| 705 ;; Do the .. by hand. | |
| 706 (directory-file-name | |
| 707 (file-name-directory | |
| 708 ;; Chase links in the default dir of the symlink. | |
| 709 (file-chase-links | |
| 710 (directory-file-name | |
| 711 (file-name-directory newname)))))))) | |
| 712 (setq newname (expand-file-name tem (file-name-directory newname))) | |
| 713 (setq count (1- count)))) | |
| 714 newname)) | |
| 4266 | 715 |
| 716 (defun make-temp-file (prefix &optional dir-flag suffix) | |
| 717 "Create a temporary file. | |
| 718 The returned file name (created by appending some random characters at the | |
| 719 end of PREFIX, and expanding against the return value of `temp-directory' if | |
| 720 necessary), is guaranteed to point to a newly created empty file. You can | |
| 721 then use `write-region' to write new data into the file. | |
| 722 | |
| 723 If DIR-FLAG is non-nil, create a new empty directory instead of a file. | |
| 724 | |
| 725 If SUFFIX is non-nil, add that at the end of the file name. | |
| 726 | |
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727 This function is analogous to mkstemp(3) under POSIX, avoiding the race |
| 4266 | 728 condition between testing for the existence of the generated filename (under |
| 729 POSIX with mktemp(3), under Emacs Lisp with `make-temp-name') and creating | |
| 730 it." | |
| 731 (let ((umask (default-file-modes)) | |
| 732 (temporary-file-directory (temp-directory)) | |
| 733 file) | |
| 734 (unwind-protect | |
| 735 (progn | |
| 736 ;; Create temp files with strict access rights. It's easy to | |
| 737 ;; loosen them later, whereas it's impossible to close the | |
| 738 ;; time-window of loose permissions otherwise. | |
| 739 (set-default-file-modes #o700) | |
| 740 (while (condition-case () | |
| 741 (progn | |
| 742 (setq file | |
| 743 (make-temp-name | |
| 744 (expand-file-name prefix | |
| 745 temporary-file-directory))) | |
| 746 (if suffix | |
| 747 (setq file (concat file suffix))) | |
| 748 (if dir-flag | |
| 749 (make-directory file) | |
| 750 (write-region "" nil file nil 'silent nil 'excl)) | |
| 751 nil) | |
| 752 (file-already-exists t)) | |
| 753 ;; the file was somehow created by someone else between | |
| 754 ;; `make-temp-name' and `write-region', let's try again. | |
| 755 nil) | |
| 756 file) | |
| 757 ;; Reset the umask. | |
| 758 (set-default-file-modes umask)))) | |
| 759 | |
| 428 | 760 |
| 761 (defun switch-to-other-buffer (arg) | |
| 762 "Switch to the previous buffer. With a numeric arg, n, switch to the nth | |
| 763 most recent buffer. With an arg of 0, buries the current buffer at the | |
| 764 bottom of the buffer stack." | |
| 765 (interactive "p") | |
| 766 (if (eq arg 0) | |
| 767 (bury-buffer (current-buffer))) | |
| 768 (switch-to-buffer | |
| 769 (if (<= arg 1) (other-buffer (current-buffer)) | |
| 770 (nth (1+ arg) (buffer-list))))) | |
| 771 | |
| 1333 | 772 ;;FSF 21.2 |
| 773 ;Optional second arg NORECORD non-nil means | |
| 774 ;do not put this buffer at the front of the list of recently selected ones. | |
| 775 (defun switch-to-buffer-other-window (buffer) ;;FSF 21.2: &optional norecord | |
| 776 "Select buffer BUFFER in another window. | |
| 777 | |
| 778 This uses the function `display-buffer' as a subroutine; see its | |
| 779 documentation for additional customization information." | |
| 780 (interactive "BSwitch to buffer in other window: ") | |
| 428 | 781 (let ((pop-up-windows t)) |
| 782 ;; XEmacs: this used to have (selected-frame) as the third argument, | |
| 783 ;; but this is obnoxious. If the user wants the buffer in a | |
| 784 ;; different frame, then it should be this way. | |
| 785 | |
| 786 ;; Change documented above undone --mrb | |
| 787 (pop-to-buffer buffer t (selected-frame)))) | |
| 1333 | 788 ;(pop-to-buffer buffer t norecord))) |
| 789 | |
| 790 ;; FSF 21.2: | |
| 791 ; (defun switch-to-buffer-other-frame (buffer &optional norecord) | |
| 792 ; "Switch to buffer BUFFER in another frame. | |
| 793 ; Optional second arg NORECORD non-nil means | |
| 794 ; do not put this buffer at the front of the list of recently selected ones. | |
| 795 | |
| 796 ; This uses the function `display-buffer' as a subroutine; see its | |
| 797 ; documentation for additional customization information." | |
| 798 ; (interactive "BSwitch to buffer in other frame: ") | |
| 799 ; (let ((pop-up-frames t)) | |
| 800 ; (pop-to-buffer buffer t norecord) | |
| 801 ; (raise-frame (window-frame (selected-window))))) | |
| 428 | 802 |
| 803 (defun switch-to-buffer-other-frame (buffer) | |
| 1333 | 804 "Switch to buffer BUFFER in a newly-created frame. |
| 805 | |
| 806 This uses the function `display-buffer' as a subroutine; see its | |
| 807 documentation for additional customization information." | |
| 428 | 808 (interactive "BSwitch to buffer in other frame: ") |
| 809 (let* ((name (get-frame-name-for-buffer buffer)) | |
| 810 (frame (make-frame (if name | |
| 811 (list (cons 'name (symbol-name name))))))) | |
| 812 (pop-to-buffer buffer t frame) | |
| 813 (make-frame-visible frame) | |
| 814 buffer)) | |
| 815 | |
| 771 | 816 (defun switch-to-next-buffer (&optional n) |
| 817 "Switch to the next-most-recent buffer. | |
| 818 This essentially rotates the buffer list forward. | |
| 819 N (interactively, the prefix arg) specifies how many times to rotate | |
| 820 forward, and defaults to 1. Buffers whose name begins with a space | |
| 821 \(i.e. \"invisible\" buffers) are ignored." | |
| 822 ;; Here is a different interactive spec. Look up the function | |
| 823 ;; `interactive' (i.e. `C-h f interactive') to understand how this | |
| 824 ;; all works. | |
| 825 (interactive "p") | |
| 826 (dotimes (n (or n 1)) | |
| 827 (loop | |
| 828 do (bury-buffer (car (buffer-list))) | |
| 829 while (funcall buffers-tab-omit-function (car (buffer-list)))) | |
| 830 (switch-to-buffer (car (buffer-list))))) | |
| 831 | |
| 832 (defun switch-to-previous-buffer (&optional n) | |
| 833 "Switch to the previously most-recent buffer. | |
| 834 This essentially rotates the buffer list backward. | |
| 835 N (interactively, the prefix arg) specifies how many times to rotate | |
| 836 backward, and defaults to 1. Buffers whose name begins with a space | |
| 837 \(i.e. \"invisible\" buffers) are ignored." | |
| 838 (interactive "p") | |
| 839 (dotimes (n (or n 1)) | |
| 840 (loop | |
| 841 do (switch-to-buffer (car (last (buffer-list)))) | |
| 842 while (funcall buffers-tab-omit-function (car (buffer-list)))))) | |
| 843 | |
| 844 (defun switch-to-next-buffer-in-group (&optional n) | |
| 845 "Switch to the next-most-recent buffer in the current group. | |
| 846 This essentially rotates the buffer list forward. | |
| 847 N (interactively, the prefix arg) specifies how many times to rotate | |
| 848 forward, and defaults to 1. Buffers whose name begins with a space | |
| 849 \(i.e. \"invisible\" buffers) are ignored." | |
| 850 (interactive "p") | |
| 851 (dotimes (n (or n 1)) | |
| 852 (let ((curbuf (car (buffer-list)))) | |
| 853 (loop | |
| 854 do (bury-buffer (car (buffer-list))) | |
| 855 while (or (funcall buffers-tab-omit-function (car (buffer-list))) | |
| 856 (not (funcall buffers-tab-selection-function | |
| 857 curbuf (car (buffer-list))))))) | |
| 858 (switch-to-buffer (car (buffer-list))))) | |
| 859 | |
| 860 (defun switch-to-previous-buffer-in-group (&optional n) | |
| 861 "Switch to the previously most-recent buffer in the current group. | |
| 862 This essentially rotates the buffer list backward. | |
| 863 N (interactively, the prefix arg) specifies how many times to rotate | |
| 864 backward, and defaults to 1. Buffers whose name begins with a space | |
| 865 \(i.e. \"invisible\" buffers) are ignored." | |
| 866 (interactive "p") | |
| 867 (dotimes (n (or n 1)) | |
| 868 (let ((curbuf (car (buffer-list)))) | |
| 869 (loop | |
| 870 do (switch-to-buffer (car (last (buffer-list)))) | |
| 871 while (or (funcall buffers-tab-omit-function (car (buffer-list))) | |
| 872 (not (funcall buffers-tab-selection-function | |
| 873 curbuf (car (buffer-list))))))))) | |
| 874 | |
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875 (defmacro find-file-create-switch-thunk (switch-function) |
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876 "Mark buffer modified if needed, then call SWITCH-FUNCTION. |
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877 |
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878 The buffer will be marked modified if the file associated with the buffer |
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879 does not exist. This means that \\[find-file] on a non-existent file will |
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880 create a modified buffer, making \\[save-buffer] sufficient to create the |
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881 file. |
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882 |
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883 SWITCH-FUNCTION should be `switch-to-buffer' or a related function. This |
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884 function (that is, `find-file-create-switch-thunk') is implemented as a macro |
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885 because we don't have built-in lexical scope, a closure created with |
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886 `lexical-let' will always run as interpreted code. Though functions created |
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887 by this macro are unlikely to be called in performance-critical contexts. |
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888 |
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889 This function may be called from functions related to `find-file', as well |
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890 as `find-file' itself." |
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891 `(function |
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892 (lambda (buffer) |
|
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893 (unless (and (buffer-file-name buffer) |
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894 (file-exists-p (buffer-file-name buffer))) |
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895 ;; XEmacs: nonexistent file--qualifies as a modification to the |
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896 ;; buffer. |
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897 (set-buffer-modified-p t buffer)) |
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898 (,switch-function buffer)))) |
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899 |
| 1333 | 900 (defun find-file (filename &optional codesys wildcards) |
| 428 | 901 "Edit file FILENAME. |
| 771 | 902 Switch to a buffer visiting file FILENAME, creating one if none already |
| 903 exists. Optional second argument specifies the coding system to use when | |
| 904 decoding the file. Interactively, with a prefix argument, you will be | |
| 905 prompted for the coding system. | |
| 906 | |
| 907 If you do not explicitly specify a coding system, the coding system | |
| 908 is determined as follows: | |
| 909 | |
| 910 1. `coding-system-for-read', if non-nil. (This is used by Lisp programs to | |
| 911 temporarily set an overriding coding system and should almost never | |
| 912 apply here in `find-file'.) | |
| 913 2. The result of `insert-file-contents-pre-hook', if non-nil. (This is a | |
| 914 complex interface for handling special cases.) | |
| 915 3. The matching value for this filename from `file-coding-system-alist', | |
| 916 if any. (This lets you specify the coding system to be used for | |
| 917 files with particular extensions, names, etc.) | |
| 918 4. `buffer-file-coding-system-for-read', if non-nil. (This is the global | |
| 919 default -- normally `undecided', so the built-in auto-detection | |
| 920 mechanism can do its thing.) | |
| 921 5. The coding system 'raw-text. | |
| 922 | |
| 923 See `insert-file-contents' for more details about how the process of | |
| 1333 | 924 determining the coding system works. |
| 925 | |
| 926 Interactively, or if WILDCARDS is non-nil in a call from Lisp, | |
| 927 expand wildcards (if any) and visit multiple files. Wildcard expansion | |
| 1745 | 928 can be suppressed by setting `find-file-wildcards' to `nil'." |
| 1333 | 929 (interactive (list (read-file-name "Find file: ") |
| 930 (and current-prefix-arg | |
| 931 (read-coding-system "Coding system: ")) | |
| 932 t)) | |
|
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933 (and codesys (setq codesys (check-coding-system codesys))) |
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934 (let* ((coding-system-for-read (or codesys coding-system-for-read)) |
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935 (value (find-file-noselect filename nil nil wildcards)) |
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936 (thunk (find-file-create-switch-thunk switch-to-buffer))) |
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937 (if (listp value) |
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938 (mapcar thunk (nreverse value)) |
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939 (funcall thunk value)))) |
| 1333 | 940 |
| 941 (defun find-file-other-window (filename &optional codesys wildcards) | |
| 428 | 942 "Edit file FILENAME, in another window. |
| 771 | 943 May create a new window, or reuse an existing one. See the function |
| 944 `display-buffer'. Optional second argument specifies the coding system to | |
| 945 use when decoding the file. Interactively, with a prefix argument, you | |
| 946 will be prompted for the coding system." | |
| 1333 | 947 (interactive (list (read-file-name "Find file in other window: ") |
| 948 (and current-prefix-arg | |
| 949 (read-coding-system "Coding system: ")) | |
| 950 t)) | |
|
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951 (and codesys (setq codesys (check-coding-system codesys))) |
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952 (let* ((coding-system-for-read (or codesys coding-system-for-read)) |
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953 (value (find-file-noselect filename nil nil wildcards)) |
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954 (list (and (listp value) (nreverse value))) |
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955 (other-window-thunk (find-file-create-switch-thunk |
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956 switch-to-buffer-other-window))) |
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957 (if list |
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958 (cons |
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959 (funcall other-window-thunk (car list)) |
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960 (mapcar (find-file-create-switch-thunk switch-to-buffer) (cdr list))) |
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961 (funcall other-window-thunk value)))) |
| 1333 | 962 |
| 963 (defun find-file-other-frame (filename &optional codesys wildcards) | |
| 428 | 964 "Edit file FILENAME, in a newly-created frame. |
| 771 | 965 Optional second argument specifies the coding system to use when decoding |
| 966 the file. Interactively, with a prefix argument, you will be prompted for | |
| 967 the coding system." | |
| 1333 | 968 (interactive (list (read-file-name "Find file in other frame: ") |
| 969 (and current-prefix-arg | |
| 970 (read-coding-system "Coding system: ")) | |
| 971 t)) | |
|
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972 (and codesys (setq codesys (check-coding-system codesys))) |
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973 (let* ((coding-system-for-read (or codesys coding-system-for-read)) |
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974 (value (find-file-noselect filename nil nil wildcards)) |
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975 (list (and (listp value) (nreverse value))) |
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976 (other-frame-thunk (find-file-create-switch-thunk |
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977 switch-to-buffer-other-frame))) |
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978 (if list |
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979 (cons |
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980 (funcall other-frame-thunk (car list)) |
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981 (mapcar (find-file-create-switch-thunk switch-to-buffer) (cdr list))) |
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982 (funcall other-frame-thunk value)))) |
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983 |
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984 ;; No need to keep this macro around in the dumped executable. |
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985 (unintern 'find-file-create-switch-thunk) |
| 1333 | 986 |
| 987 (defun find-file-read-only (filename &optional codesys wildcards) | |
| 428 | 988 "Edit file FILENAME but don't allow changes. |
| 989 Like \\[find-file] but marks buffer as read-only. | |
| 990 Use \\[toggle-read-only] to permit editing. | |
| 771 | 991 Optional second argument specifies the coding system to use when decoding |
| 992 the file. Interactively, with a prefix argument, you will be prompted for | |
| 993 the coding system." | |
| 1333 | 994 (interactive (list (read-file-name "Find file read-only: ") |
| 995 (and current-prefix-arg | |
| 996 (read-coding-system "Coding system: ")) | |
| 997 t)) | |
|
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998 (let ((value (find-file filename codesys wildcards))) |
|
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999 (mapc #'(lambda (buffer) |
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1000 (set-symbol-value-in-buffer 'buffer-read-only t buffer)) |
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1001 (if (listp value) value (list value))) |
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1002 value)) |
| 428 | 1003 |
| 1333 | 1004 (defun find-file-read-only-other-window (filename &optional codesys wildcards) |
| 428 | 1005 "Edit file FILENAME in another window but don't allow changes. |
| 1006 Like \\[find-file-other-window] but marks buffer as read-only. | |
| 1007 Use \\[toggle-read-only] to permit editing. | |
| 771 | 1008 Optional second argument specifies the coding system to use when decoding |
| 1009 the file. Interactively, with a prefix argument, you will be prompted for | |
| 1010 the coding system." | |
| 1333 | 1011 (interactive (list (read-file-name "Find file read-only other window: ") |
| 1012 (and current-prefix-arg | |
| 1013 (read-coding-system "Coding system: ")) | |
| 1014 t)) | |
|
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1015 (find-file-other-window filename codesys wildcards) |
| 428 | 1016 (setq buffer-read-only t) |
| 1017 (current-buffer)) | |
| 1018 | |
| 1333 | 1019 (defun find-file-read-only-other-frame (filename &optional codesys wildcards) |
| 428 | 1020 "Edit file FILENAME in another frame but don't allow changes. |
| 1021 Like \\[find-file-other-frame] but marks buffer as read-only. | |
| 1022 Use \\[toggle-read-only] to permit editing. | |
| 771 | 1023 Optional second argument specifies the coding system to use when decoding |
| 1024 the file. Interactively, with a prefix argument, you will be prompted for | |
| 1025 the coding system." | |
| 1333 | 1026 (interactive (list (read-file-name "Find file read-only other frame: ") |
| 1027 (and current-prefix-arg | |
| 1028 (read-coding-system "Coding system: ")) | |
| 1029 t)) | |
|
4648
907697569a49
Mark buffers modified in #'find-file if nonexistent file; fix other bugs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4645
diff
changeset
|
1030 (find-file-other-frame filename codesys wildcards) |
| 428 | 1031 (setq buffer-read-only t) |
| 1032 (current-buffer)) | |
| 1033 | |
| 1034 (defun find-alternate-file-other-window (filename &optional codesys) | |
| 1035 "Find file FILENAME as a replacement for the file in the next window. | |
| 771 | 1036 This command does not select that window. Optional second argument |
| 1037 specifies the coding system to use when decoding the file. Interactively, | |
| 428 | 1038 with a prefix argument, you will be prompted for the coding system." |
| 1039 (interactive | |
| 1040 (save-selected-window | |
| 1041 (other-window 1) | |
| 1042 (let ((file buffer-file-name) | |
| 1043 (file-name nil) | |
| 1044 (file-dir nil)) | |
| 1045 (and file | |
| 1046 (setq file-name (file-name-nondirectory file) | |
| 1047 file-dir (file-name-directory file))) | |
| 1048 (list (read-file-name | |
| 1049 "Find alternate file: " file-dir nil nil file-name) | |
| 771 | 1050 (if current-prefix-arg (read-coding-system "Coding-system: ")))))) |
| 428 | 1051 (if (one-window-p) |
|
4648
907697569a49
Mark buffers modified in #'find-file if nonexistent file; fix other bugs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4645
diff
changeset
|
1052 (find-file-other-window filename codesys) |
| 428 | 1053 (save-selected-window |
| 1054 (other-window 1) | |
| 1055 (find-alternate-file filename codesys)))) | |
| 1056 | |
| 1057 (defun find-alternate-file (filename &optional codesys) | |
| 1058 "Find file FILENAME, select its buffer, kill previous buffer. | |
| 1059 If the current buffer now contains an empty file that you just visited | |
| 771 | 1060 \(presumably by mistake), use this command to visit the file you really |
| 1061 want. Optional second argument specifies the coding system to use when | |
| 1062 decoding the file. Interactively, with a prefix argument, you will be | |
| 1063 prompted for the coding system." | |
| 428 | 1064 (interactive |
| 1065 (let ((file buffer-file-name) | |
| 1066 (file-name nil) | |
| 1067 (file-dir nil)) | |
| 1068 (and file | |
| 1069 (setq file-name (file-name-nondirectory file) | |
| 1070 file-dir (file-name-directory file))) | |
| 1071 (list (read-file-name | |
| 1072 "Find alternate file: " file-dir nil nil file-name) | |
| 771 | 1073 (if current-prefix-arg (read-coding-system "Coding-system: "))))) |
| 428 | 1074 (and (buffer-modified-p) (buffer-file-name) |
| 1075 ;; (not buffer-read-only) | |
| 1076 (not (yes-or-no-p (format | |
| 1077 "Buffer %s is modified; kill anyway? " | |
| 1078 (buffer-name)))) | |
| 1079 (error "Aborted")) | |
| 1080 (let ((obuf (current-buffer)) | |
| 1081 (ofile buffer-file-name) | |
| 1082 (onum buffer-file-number) | |
| 1083 (otrue buffer-file-truename) | |
| 1084 (oname (buffer-name))) | |
| 1085 (if (get-buffer " **lose**") | |
| 1086 (kill-buffer " **lose**")) | |
| 1087 (rename-buffer " **lose**") | |
| 1088 (setq buffer-file-name nil) | |
| 1089 (setq buffer-file-number nil) | |
| 1090 (setq buffer-file-truename nil) | |
| 1091 (unwind-protect | |
| 1092 (progn | |
| 1093 (unlock-buffer) | |
|
4648
907697569a49
Mark buffers modified in #'find-file if nonexistent file; fix other bugs.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4645
diff
changeset
|
1094 (find-file filename codesys)) |
| 428 | 1095 (cond ((eq obuf (current-buffer)) |
| 1096 (setq buffer-file-name ofile) | |
| 1097 (setq buffer-file-number onum) | |
| 1098 (setq buffer-file-truename otrue) | |
| 1099 (lock-buffer) | |
| 1100 (rename-buffer oname)))) | |
| 1101 (or (eq (current-buffer) obuf) | |
| 1102 (kill-buffer obuf)))) | |
| 1333 | 1103 |
| 428 | 1104 (defun create-file-buffer (filename) |
| 1105 "Create a suitably named buffer for visiting FILENAME, and return it. | |
| 1106 FILENAME (sans directory) is used unchanged if that name is free; | |
| 1107 otherwise a string <2> or <3> or ... is appended to get an unused name." | |
| 1108 (let ((handler (find-file-name-handler filename 'create-file-buffer))) | |
| 1109 (if handler | |
| 1110 (funcall handler 'create-file-buffer filename) | |
| 1111 (let ((lastname (file-name-nondirectory filename))) | |
| 1112 (if (string= lastname "") | |
| 1113 (setq lastname filename)) | |
| 1114 (generate-new-buffer lastname))))) | |
| 1115 | |
| 1116 (defun generate-new-buffer (name) | |
| 1117 "Create and return a buffer with a name based on NAME. | |
| 1118 Choose the buffer's name using `generate-new-buffer-name'." | |
| 1119 (get-buffer-create (generate-new-buffer-name name))) | |
| 1120 | |
| 1121 (defvar abbreviated-home-dir nil | |
| 1122 "The user's homedir abbreviated according to `directory-abbrev-alist'.") | |
| 1123 | |
| 1124 (defun abbreviate-file-name (filename &optional hack-homedir) | |
| 1125 "Return a version of FILENAME shortened using `directory-abbrev-alist'. | |
| 1333 | 1126 Type \\[describe-variable] directory-abbrev-alist RET for more information. |
| 428 | 1127 If optional argument HACK-HOMEDIR is non-nil, then this also substitutes |
| 1128 \"~\" for the user's home directory." | |
| 1129 (let ((handler (find-file-name-handler filename 'abbreviate-file-name))) | |
| 1130 (if handler | |
| 1131 (funcall handler 'abbreviate-file-name filename hack-homedir) | |
| 1132 ;; Get rid of the prefixes added by the automounter. | |
| 1133 ;;(if (and (string-match automount-dir-prefix filename) | |
| 1134 ;; (file-exists-p (file-name-directory | |
| 1135 ;; (substring filename (1- (match-end 0)))))) | |
| 1136 ;; (setq filename (substring filename (1- (match-end 0))))) | |
| 1137 (let ((tail directory-abbrev-alist)) | |
| 1138 ;; If any elt of directory-abbrev-alist matches this name, | |
| 1139 ;; abbreviate accordingly. | |
| 1140 (while tail | |
| 1141 (when (string-match (car (car tail)) filename) | |
| 1142 (setq filename | |
| 1143 (concat (cdr (car tail)) (substring filename (match-end 0))))) | |
| 1144 (setq tail (cdr tail)))) | |
| 1145 (when hack-homedir | |
| 1146 ;; Compute and save the abbreviated homedir name. | |
| 440 | 1147 ;; We defer computing this until the first time it's needed, |
| 1148 ;; to give time for directory-abbrev-alist to be set properly. | |
| 1149 ;; We include the separator at the end, to avoid spurious | |
| 1150 ;; matches such as `/usr/foobar' when the home dir is | |
| 1151 ;; `/usr/foo'. | |
| 428 | 1152 (or abbreviated-home-dir |
| 1153 (setq abbreviated-home-dir | |
| 1154 (let ((abbreviated-home-dir "$foo")) | |
| 440 | 1155 (concat "\\`" |
| 1156 (regexp-quote | |
| 1157 (abbreviate-file-name (expand-file-name "~"))) | |
| 1158 "\\(" | |
| 1159 (regexp-quote (string directory-sep-char)) | |
| 1160 "\\|\\'\\)")))) | |
| 428 | 1161 ;; If FILENAME starts with the abbreviated homedir, |
| 1162 ;; make it start with `~' instead. | |
| 1163 (if (and (string-match abbreviated-home-dir filename) | |
| 1164 ;; If the home dir is just /, don't change it. | |
| 440 | 1165 (not (and (= (match-end 0) 1) |
| 1166 (= (aref filename 0) directory-sep-char))) | |
| 1167 (not (and (eq system-type 'windows-nt) | |
| 428 | 1168 (save-match-data |
| 440 | 1169 (string-match (concat "\\`[a-zA-Z]:" |
| 1170 (regexp-quote | |
| 1171 (string directory-sep-char)) | |
| 1172 "\\'") | |
| 1173 filename))))) | |
| 428 | 1174 (setq filename |
| 1175 (concat "~" | |
| 440 | 1176 (match-string 1 filename) |
| 428 | 1177 (substring filename (match-end 0)))))) |
| 1178 filename))) | |
| 1179 | |
| 1180 (defcustom find-file-not-true-dirname-list nil | |
| 1181 "*List of logical names for which visiting shouldn't save the true dirname." | |
| 1182 :type '(repeat (string :tag "Name")) | |
| 1183 :group 'find-file) | |
| 1184 | |
| 1185 ;; This function is needed by FSF vc.el. I hope somebody can make it | |
| 1186 ;; work for XEmacs. -sb. | |
| 1187 ;; #### In what way does it not work? --hniksic | |
| 1188 (defun find-buffer-visiting (filename) | |
| 1189 "Return the buffer visiting file FILENAME (a string). | |
| 1190 This is like `get-file-buffer', except that it checks for any buffer | |
| 1191 visiting the same file, possibly under a different name. | |
| 1192 If there is no such live buffer, return nil." | |
| 1193 (let ((buf (get-file-buffer filename)) | |
| 1194 (truename (abbreviate-file-name (file-truename filename)))) | |
| 1195 (or buf | |
| 1196 (let ((list (buffer-list)) found) | |
| 1197 (while (and (not found) list) | |
| 1198 (save-excursion | |
| 1199 (set-buffer (car list)) | |
| 1200 (if (and buffer-file-name | |
| 1201 (string= buffer-file-truename truename)) | |
| 1202 (setq found (car list)))) | |
| 1203 (setq list (cdr list))) | |
| 1204 found) | |
| 1333 | 1205 (let* ((attributes (file-attributes truename)) |
| 1206 (number (nthcdr 10 attributes)) | |
| 1207 (list (buffer-list)) found) | |
| 428 | 1208 (and buffer-file-numbers-unique |
| 1209 number | |
| 1210 (while (and (not found) list) | |
| 1333 | 1211 (with-current-buffer (car list) |
| 1212 (if (and buffer-file-name | |
| 1213 (equal buffer-file-number number) | |
| 428 | 1214 ;; Verify this buffer's file number |
| 1215 ;; still belongs to its file. | |
| 1216 (file-exists-p buffer-file-name) | |
| 1333 | 1217 (equal (file-attributes buffer-file-name) |
| 1218 attributes)) | |
| 428 | 1219 (setq found (car list)))) |
| 1220 (setq list (cdr list)))) | |
| 1221 found)))) | |
| 1333 | 1222 |
| 1223 (defcustom find-file-wildcards t | |
| 1224 "*Non-nil means file-visiting commands should handle wildcards. | |
| 1225 For example, if you specify `*.c', that would visit all the files | |
| 1226 whose names match the pattern." | |
| 1227 :group 'files | |
| 1228 ; :version "20.4" | |
| 1229 :type 'boolean) | |
| 1230 | |
| 1231 (defcustom find-file-suppress-same-file-warnings nil | |
| 1232 "*Non-nil means suppress warning messages for symlinked files. | |
| 1233 When nil, Emacs prints a warning when visiting a file that is already | |
| 1234 visited, but with a different name. Setting this option to t | |
| 1235 suppresses this warning." | |
| 1236 :group 'files | |
| 1237 ; :version "21.1" | |
| 1238 :type 'boolean) | |
| 1239 | |
| 1240 (defun find-file-noselect (filename &optional nowarn rawfile wildcards) | |
| 1241 "Read file FILENAME into a buffer and return the buffer. | |
| 1242 If a buffer exists visiting FILENAME, return that one, but | |
| 1243 verify that the file has not changed since visited or saved. | |
| 1244 The buffer is not selected, just returned to the caller. | |
| 1245 If NOWARN is non-nil, warning messages will be suppressed. | |
| 1246 If RAWFILE is non-nil, the file is read literally." | |
| 1247 (setq filename | |
| 1248 (abbreviate-file-name | |
| 1249 (expand-file-name filename))) | |
| 1250 (if (file-directory-p filename) | |
| 1251 (or (and find-file-run-dired | |
| 1252 (loop for fn in find-directory-functions | |
| 1253 for x = (and (fboundp fn) | |
| 1254 (funcall fn | |
| 1255 (if find-file-use-truenames | |
| 1256 (abbreviate-file-name | |
| 1257 (file-truename filename)) | |
| 1258 filename))) | |
| 1259 if x | |
| 1260 return x)) | |
| 1261 (error "%s is a directory" filename)) | |
| 1262 (if (and wildcards | |
| 1263 find-file-wildcards | |
| 1264 (not (string-match "\\`/:" filename)) | |
| 1265 (string-match "[[*?]" filename)) | |
| 1266 (let ((files (condition-case nil | |
| 1267 (file-expand-wildcards filename t) | |
| 1268 (error (list filename)))) | |
| 1269 (find-file-wildcards nil)) | |
| 1270 (if (null files) | |
| 1271 (find-file-noselect filename) | |
| 1272 (mapcar #'find-file-noselect files))) | |
| 1273 (let* ((buf (get-file-buffer filename)) | |
| 1274 (truename (abbreviate-file-name (file-truename filename))) | |
| 1275 (number (nthcdr 10 (file-attributes truename))) | |
| 1276 ; ;; Find any buffer for a file which has same truename. | |
| 1277 ; (other (and (not buf) (find-buffer-visiting filename))) | |
| 1346 | 1278 ) |
| 1333 | 1279 |
| 1280 ; ;; Let user know if there is a buffer with the same truename. | |
| 1281 ; (if other | |
| 1282 ; (progn | |
| 1283 ; (or nowarn | |
| 1284 ; find-file-suppress-same-file-warnings | |
| 1285 ; (string-equal filename (buffer-file-name other)) | |
| 1286 ; (message "%s and %s are the same file" | |
| 1287 ; filename (buffer-file-name other))) | |
| 1288 ; ;; Optionally also find that buffer. | |
| 1289 ; (if (or find-file-existing-other-name find-file-visit-truename) | |
| 1290 ; (setq buf other)))) | |
| 1291 | |
| 1292 (when (and buf | |
| 1293 (or find-file-compare-truenames find-file-use-truenames) | |
| 1294 (not find-file-suppress-same-file-warnings) | |
| 1295 (not nowarn)) | |
| 1296 (save-excursion | |
| 1297 (set-buffer buf) | |
| 1298 (if (not (string-equal buffer-file-name filename)) | |
| 1299 (message "%s and %s are the same file (%s)" | |
| 1300 filename buffer-file-name | |
| 1301 buffer-file-truename)))) | |
| 1302 | |
| 1303 (if buf | |
| 1304 (progn | |
| 1305 (or nowarn | |
| 1306 (verify-visited-file-modtime buf) | |
| 1307 (cond ((not (file-exists-p filename)) | |
| 1308 (error "File %s no longer exists!" filename)) | |
| 1309 ;; Certain files should be reverted automatically | |
| 1310 ;; if they have changed on disk and not in the buffer. | |
| 1311 ((and (not (buffer-modified-p buf)) | |
| 1312 (dolist (rx revert-without-query nil) | |
| 1313 (when (string-match rx filename) | |
| 1314 (return t)))) | |
| 1315 (with-current-buffer buf | |
| 1316 (message "Reverting file %s..." filename) | |
| 1317 (revert-buffer t t) | |
| 1318 (message "Reverting file %s... done" filename))) | |
| 1319 ((yes-or-no-p | |
| 1320 (if (string= (file-name-nondirectory filename) | |
| 1321 (buffer-name buf)) | |
| 1322 (format | |
| 1323 (if (buffer-modified-p buf) | |
| 1324 (gettext "File %s changed on disk. Discard your edits? ") | |
| 1325 (gettext "File %s changed on disk. Reread from disk? ")) | |
| 1326 (file-name-nondirectory filename)) | |
| 1327 (format | |
| 1328 (if (buffer-modified-p buf) | |
| 1329 (gettext "File %s changed on disk. Discard your edits in %s? ") | |
| 1330 (gettext "File %s changed on disk. Reread from disk into %s? ")) | |
| 1331 (file-name-nondirectory filename) | |
| 1332 (buffer-name buf)))) | |
| 1333 (with-current-buffer buf | |
| 1334 (revert-buffer t t))))) | |
| 1335 (when (not (eq rawfile (not (null find-file-literally)))) | |
| 1336 (with-current-buffer buf | |
| 1337 (if (buffer-modified-p) | |
| 1338 (if (y-or-n-p (if rawfile | |
| 1339 "Save file and revisit literally? " | |
| 1340 "Save file and revisit non-literally? ")) | |
| 1341 (progn | |
| 1342 (save-buffer) | |
| 1343 (find-file-noselect-1 buf filename nowarn | |
| 1344 rawfile truename number)) | |
| 1345 (if (y-or-n-p (if rawfile | |
| 1346 "Discard your edits and revisit file literally? " | |
| 1347 "Discard your edits and revisit file non-literally? ")) | |
| 1348 (find-file-noselect-1 buf filename nowarn | |
| 1349 rawfile truename number) | |
| 1350 (error (if rawfile "File already visited non-literally" | |
| 1351 "File already visited literally")))) | |
| 1352 (if (y-or-n-p (if rawfile | |
| 1353 "Revisit file literally? " | |
| 1354 "Revisit file non-literally? ")) | |
| 1355 (find-file-noselect-1 buf filename nowarn | |
| 1356 rawfile truename number) | |
| 1357 (error (if rawfile "File already visited non-literally" | |
| 1358 "File already visited literally")))))) | |
| 1359 ;; Return the buffer we are using. | |
| 1360 buf) | |
| 1361 ;; Create a new buffer. | |
| 1362 (setq buf (create-file-buffer filename)) | |
| 1363 ;; Catch various signals, such as QUIT, and kill the buffer | |
| 1364 ;; in that case. | |
| 1365 (condition-case data | |
| 1366 (progn | |
| 1367 (set-buffer-major-mode buf) | |
| 1368 ;; find-file-noselect-1 may use a different buffer. | |
| 1369 (find-file-noselect-1 buf filename nowarn | |
| 1370 rawfile truename number)) | |
| 1371 (t | |
| 1372 (kill-buffer buf) | |
| 1373 (signal (car data) (cdr data))))))))) | |
| 1374 | |
| 1375 (defun find-file-noselect-1 (buf filename nowarn rawfile truename number) | |
| 1376 (let ((inhibit-read-only t) | |
| 1377 error) | |
| 1378 (with-current-buffer buf | |
| 1379 (kill-local-variable 'find-file-literally) | |
| 1380 ;; Needed in case we are re-visiting the file with a different | |
| 1381 ;; text representation. | |
| 1382 (kill-local-variable 'buffer-file-coding-system) | |
| 1383 (erase-buffer) | |
| 1384 ; (and (default-value 'enable-multibyte-characters) | |
| 1385 ; (not rawfile) | |
| 1386 ; (set-buffer-multibyte t)) | |
| 1387 (condition-case () | |
| 1388 (if rawfile | |
| 1389 (insert-file-contents-literally filename t) | |
| 1390 (insert-file-contents filename t)) | |
| 1391 (file-error | |
| 1392 (when (and (file-exists-p filename) | |
| 1393 (not (file-readable-p filename))) | |
| 1394 (signal 'file-error (list "File is not readable" filename))) | |
| 1395 (if rawfile | |
| 1396 ;; Unconditionally set error | |
| 1397 (setq error t) | |
| 1398 (or | |
| 1399 ;; Run find-file-not-found-hooks until one returns non-nil. | |
| 1400 (run-hook-with-args-until-success 'find-file-not-found-hooks) | |
| 1401 ;; If they fail too, set error. | |
| 1402 (setq error t))))) | |
| 1403 ;; Find the file's truename, and maybe use that as visited name. | |
| 1404 ;; automatically computed in XEmacs, unless jka-compr was used! | |
| 1405 (unless buffer-file-truename | |
| 1406 (setq buffer-file-truename truename)) | |
| 1407 (setq buffer-file-number number) | |
| 1408 (and find-file-use-truenames | |
| 1409 ;; This should be in C. Put pathname | |
| 1410 ;; abbreviations that have been explicitly | |
| 1411 ;; requested back into the pathname. Most | |
| 1412 ;; importantly, strip out automounter /tmp_mnt | |
| 1413 ;; directories so that auto-save will work | |
| 1414 (setq buffer-file-name (abbreviate-file-name buffer-file-name))) | |
| 1415 ;; Set buffer's default directory to that of the file. | |
| 1416 (setq default-directory (file-name-directory buffer-file-name)) | |
| 1417 ;; Turn off backup files for certain file names. Since | |
| 1418 ;; this is a permanent local, the major mode won't eliminate it. | |
| 1419 (and (not (funcall backup-enable-predicate buffer-file-name)) | |
| 1420 (progn | |
| 1421 (make-local-variable 'backup-inhibited) | |
| 1422 (setq backup-inhibited t))) | |
| 1423 (if rawfile | |
| 1424 (progn | |
| 1425 (setq buffer-file-coding-system 'no-conversion) | |
| 1426 (make-local-variable 'find-file-literally) | |
| 1427 (setq find-file-literally t)) | |
| 1428 (after-find-file error (not nowarn)) | |
| 1429 (setq buf (current-buffer))) | |
| 1430 (current-buffer)))) | |
| 1431 | |
| 444 | 1432 (defun insert-file-contents-literally (filename &optional visit start end replace) |
| 1333 | 1433 "Like `insert-file-contents', but only reads in the file literally. |
| 1434 A buffer may be modified in several ways after reading into the buffer, | |
| 1435 due to Emacs features such as format decoding, character code | |
| 1436 conversion, `find-file-hooks', automatic uncompression, etc. | |
| 1437 | |
| 1438 This function ensures that none of these modifications will take place." | |
| 442 | 1439 (let ((wrap-func (find-file-name-handler filename |
| 1440 'insert-file-contents-literally))) | |
| 444 | 1441 (if wrap-func |
| 442 | 1442 (funcall wrap-func 'insert-file-contents-literally filename |
| 444 | 1443 visit start end replace) |
| 442 | 1444 (let ((file-name-handler-alist nil) |
| 1445 (format-alist nil) | |
| 1446 (after-insert-file-functions nil) | |
| 1447 (coding-system-for-read 'binary) | |
| 1448 (coding-system-for-write 'binary) | |
| 1449 (find-buffer-file-type-function | |
| 1450 (if (fboundp 'find-buffer-file-type) | |
| 1451 (symbol-function 'find-buffer-file-type) | |
| 1333 | 1452 nil)) |
| 1453 (inhibit-file-name-handlers '(jka-compr-handler image-file-handler)) | |
| 1454 (inhibit-file-name-operation 'insert-file-contents)) | |
| 442 | 1455 (unwind-protect |
| 1456 (progn | |
| 1457 (fset 'find-buffer-file-type (lambda (filename) t)) | |
| 444 | 1458 (insert-file-contents filename visit start end replace)) |
| 442 | 1459 (if find-buffer-file-type-function |
| 1460 (fset 'find-buffer-file-type find-buffer-file-type-function) | |
| 1461 (fmakunbound 'find-buffer-file-type))))))) | |
| 428 | 1462 |
| 1333 | 1463 (defun insert-file-literally (filename) |
| 1464 "Insert contents of file FILENAME into buffer after point with no conversion. | |
| 1465 | |
| 1466 This function is meant for the user to run interactively. | |
| 1467 Don't call it from programs! Use `insert-file-contents-literally' instead. | |
| 1468 \(Its calling sequence is different; see its documentation)." | |
| 1469 (interactive "*fInsert file literally: ") | |
| 428 | 1470 (if (file-directory-p filename) |
| 1333 | 1471 (signal 'file-error (list "Opening input file" "file is a directory" |
| 1472 filename))) | |
| 1473 (let ((tem (insert-file-contents-literally filename))) | |
| 1474 (push-mark (+ (point) (car (cdr tem)))))) | |
| 1475 | |
| 1476 (defvar find-file-literally nil | |
| 1477 "Non-nil if this buffer was made by `find-file-literally' or equivalent. | |
| 1478 This is a permanent local.") | |
| 1479 (put 'find-file-literally 'permanent-local t) | |
| 1480 | |
| 1481 (defun find-file-literally (filename) | |
| 1482 "Visit file FILENAME with no conversion of any kind. | |
| 1483 Format conversion and character code conversion are both disabled, | |
| 1484 and multibyte characters are disabled in the resulting buffer. | |
| 1485 The major mode used is Fundamental mode regardless of the file name, | |
| 1486 and local variable specifications in the file are ignored. | |
| 1487 Automatic uncompression and adding a newline at the end of the | |
| 1488 file due to `require-final-newline' is also disabled. | |
| 1489 | |
| 1490 You cannot absolutely rely on this function to result in | |
| 1491 visiting the file literally. If Emacs already has a buffer | |
| 1492 which is visiting the file, you get the existing buffer, | |
| 1493 regardless of whether it was created literally or not. | |
| 1494 | |
| 1495 In a Lisp program, if you want to be sure of accessing a file's | |
| 1496 contents literally, you should create a temporary buffer and then read | |
| 1497 the file contents into it using `insert-file-contents-literally'." | |
| 1498 (interactive "FFind file literally: ") | |
| 1499 (switch-to-buffer (find-file-noselect filename nil t))) | |
| 428 | 1500 |
| 1501 (defvar after-find-file-from-revert-buffer nil) | |
| 1502 | |
| 1503 (defun after-find-file (&optional error warn noauto | |
| 1504 after-find-file-from-revert-buffer | |
| 1505 nomodes) | |
| 1506 "Called after finding a file and by the default revert function. | |
| 1507 Sets buffer mode, parses local variables. | |
| 1508 Optional args ERROR, WARN, and NOAUTO: ERROR non-nil means there was an | |
| 1509 error in reading the file. WARN non-nil means warn if there | |
| 1510 exists an auto-save file more recent than the visited file. | |
| 1511 NOAUTO means don't mess with auto-save mode. | |
| 1512 Fourth arg AFTER-FIND-FILE-FROM-REVERT-BUFFER non-nil | |
| 1513 means this call was from `revert-buffer'. | |
| 1514 Fifth arg NOMODES non-nil means don't alter the file's modes. | |
| 1333 | 1515 Finishes by calling the functions in `find-file-hooks' |
| 1516 unless NOMODES is non-nil." | |
| 428 | 1517 (setq buffer-read-only (not (file-writable-p buffer-file-name))) |
| 1518 (if noninteractive | |
| 1519 nil | |
| 1520 (let* (not-serious | |
| 1521 (msg | |
| 1333 | 1522 (cond |
| 1523 ((not warn) nil) | |
| 1524 ((and error (file-attributes buffer-file-name)) | |
| 1525 (setq buffer-read-only t) | |
| 1526 (gettext "File exists, but cannot be read.")) | |
| 1527 ((not buffer-read-only) | |
| 1528 (if (and warn | |
| 1529 (file-newer-than-file-p (make-auto-save-file-name) | |
| 1530 buffer-file-name)) | |
| 1531 (format "%s has auto save data; consider M-x recover-file" | |
| 1532 (file-name-nondirectory buffer-file-name)) | |
| 1533 (setq not-serious t) | |
| 1534 (if error (gettext "(New file)") nil))) | |
| 1535 ((not error) | |
| 1536 (setq not-serious t) | |
| 1537 (gettext "Note: file is write protected")) | |
| 1538 ((file-attributes (directory-file-name default-directory)) | |
| 1539 (gettext "File not found and directory write-protected")) | |
| 1540 ((file-exists-p (file-name-directory buffer-file-name)) | |
| 1541 (setq buffer-read-only nil)) | |
| 1542 (t | |
| 1543 ;; If the directory the buffer is in doesn't exist, | |
| 1544 ;; offer to create it. It's better to do this now | |
| 1545 ;; than when we save the buffer, because we want | |
| 1546 ;; autosaving to work. | |
| 1547 (setq buffer-read-only nil) | |
| 1548 ;; XEmacs | |
| 1549 (or (file-exists-p (file-name-directory buffer-file-name)) | |
| 1550 (condition-case nil | |
| 1551 (if (yes-or-no-p | |
| 1552 (format | |
| 1553 "\ | |
| 428 | 1554 The directory containing %s does not exist. Create? " |
| 1333 | 1555 (abbreviate-file-name buffer-file-name))) |
| 1556 (make-directory (file-name-directory | |
| 1557 buffer-file-name) | |
|
4649
3972966a4588
Kill buffer if directory name misspelled and user doesn't want to create it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4648
diff
changeset
|
1558 t) |
|
3972966a4588
Kill buffer if directory name misspelled and user doesn't want to create it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4648
diff
changeset
|
1559 (kill-buffer (current-buffer))) |
| 1333 | 1560 (quit |
| 1561 (kill-buffer (current-buffer)) | |
| 1562 (signal 'quit nil)))) | |
| 1563 nil)))) | |
| 428 | 1564 (if msg |
| 1565 (progn | |
| 1566 (message "%s" msg) | |
| 1567 (or not-serious (sit-for 1 t))))) | |
| 1333 | 1568 (when (and auto-save-default (not noauto)) |
| 428 | 1569 (auto-save-mode t))) |
| 1333 | 1570 ;; Make people do a little extra work (C-x C-q) |
| 1571 ;; before altering a backup file. | |
| 1572 (when (backup-file-name-p buffer-file-name) | |
| 1573 (setq buffer-read-only t)) | |
| 428 | 1574 (unless nomodes |
| 1333 | 1575 ;; #### No view-mode-disable. |
| 1576 ; (when view-read-only | |
| 1577 ; (and-boundp 'view-mode (view-mode-disable))) | |
| 428 | 1578 (normal-mode t) |
| 1333 | 1579 (when (and buffer-read-only |
| 1580 view-read-only | |
| 1581 (not (eq (get major-mode 'mode-class) 'special))) | |
| 1582 (view-mode)) | |
| 428 | 1583 (run-hooks 'find-file-hooks))) |
| 1584 | |
| 1585 (defun normal-mode (&optional find-file) | |
| 1586 "Choose the major mode for this buffer automatically. | |
| 1587 Also sets up any specified local variables of the file. | |
| 1588 Uses the visited file name, the -*- line, and the local variables spec. | |
| 1589 | |
| 1590 This function is called automatically from `find-file'. In that case, | |
| 1333 | 1591 we may set up the file-specified mode and local variables, |
| 1592 depending on the value of `enable-local-variables': if it is t, we do; | |
| 1593 if it is nil, we don't; otherwise, we query. | |
| 1594 In addition, if `local-enable-local-variables' is nil, we do | |
| 1595 not set local variables (though we do notice a mode specified with -*-.) | |
| 1596 | |
| 1597 `enable-local-variables' is ignored if you run `normal-mode' interactively, | |
| 1598 or from Lisp without specifying the optional argument FIND-FILE; | |
| 1599 in that case, this function acts as if `enable-local-variables' were t." | |
| 428 | 1600 (interactive) |
| 1601 (or find-file (funcall (or default-major-mode 'fundamental-mode))) | |
| 793 | 1602 (and (with-trapping-errors |
| 1603 :operation "File mode specification" | |
| 1604 :class 'file-mode-spec | |
| 1605 :error-form nil | |
| 1606 (set-auto-mode) | |
| 1607 t) | |
| 1608 (with-trapping-errors | |
| 1609 :operation "File local-variables" | |
| 1610 :class 'local-variables | |
| 1611 :error-form nil | |
| 1333 | 1612 ;; FSF 21.2: |
| 1613 ; (let ((enable-local-variables (or (not find-file) | |
| 1614 ; enable-local-variables))) | |
| 1615 ; (hack-local-variables)) | |
| 793 | 1616 (hack-local-variables (not find-file))))) |
| 428 | 1617 |
| 1333 | 1618 ;; END SYNC WITH FSF 21.2. |
| 1619 | |
| 1024 | 1620 ;; `auto-mode-alist' used to contain entries for modes in core and in packages. |
| 1621 ;; The applicable entries are now located in the corresponding modes in | |
| 1622 ;; packages, the ones here are for core modes. Ditto for | |
| 1623 ;; `interpreter-mode-alist' below. | |
| 1624 ;; Per Abrahamsen suggested splitting auto-mode-alist to | |
| 428 | 1625 ;; several distinct variables such as, in order of precedence, |
| 1626 ;; `user-auto-mode-alist' for users, `package-auto-mode-alist' for | |
| 1627 ;; packages and `auto-mode-alist' (which might also be called | |
| 1628 ;; `default-auto-mode-alist') for default stuff, such as some of the | |
| 1629 ;; entries below. | |
| 1630 | |
| 1631 (defvar auto-mode-alist | |
| 1632 '(("\\.te?xt\\'" . text-mode) | |
| 1633 ("\\.el\\'" . emacs-lisp-mode) | |
| 1634 ("\\.c?l\\(?:i?sp\\)?\\'" . lisp-mode) | |
| 1635 ("\\.article\\'" . text-mode) | |
| 1636 ("\\.letter\\'" . text-mode) | |
| 1637 ;; Mailer puts message to be edited in /tmp/Re.... or Message | |
| 1638 ;; #### Unix-specific! | |
| 1639 ("\\`/tmp/Re" . text-mode) | |
| 1640 ("/Message[0-9]*\\'" . text-mode) | |
| 1641 ;; some news reader is reported to use this | |
| 1642 ("^/tmp/fol/" . text-mode) | |
| 1643 ;; .emacs following a directory delimiter in either Unix or | |
| 1644 ;; Windows syntax. | |
| 1645 ("[/\\][._].*emacs\\'" . emacs-lisp-mode) | |
| 1646 ("\\.ml\\'" . lisp-mode) | |
| 1647 ) | |
| 1648 "Alist of filename patterns vs. corresponding major mode functions. | |
| 1649 Each element looks like (REGEXP . FUNCTION) or (REGEXP FUNCTION NON-NIL). | |
| 1650 \(NON-NIL stands for anything that is not nil; the value does not matter.) | |
| 1651 Visiting a file whose name matches REGEXP specifies FUNCTION as the | |
| 1652 mode function to use. FUNCTION will be called, unless it is nil. | |
| 1653 | |
| 1654 If the element has the form (REGEXP FUNCTION NON-NIL), then after | |
| 1655 calling FUNCTION (if it's not nil), we delete the suffix that matched | |
| 1656 REGEXP and search the list again for another match.") | |
| 1657 | |
| 1658 (defvar interpreter-mode-alist | |
| 1024 | 1659 '(("emacs" . emacs-lisp-mode)) |
| 428 | 1660 "Alist mapping interpreter names to major modes. |
| 1661 This alist is used to guess the major mode of a file based on the | |
| 1662 contents of the first line. This line often contains something like: | |
| 1663 #!/bin/sh | |
| 1664 but may contain something more imaginative like | |
| 1665 #! /bin/env python | |
| 1666 or | |
| 1667 eval 'exec perl -w -S $0 ${1+\"$@\"}'. | |
| 1668 | |
| 1669 Each alist element looks like (INTERPRETER . MODE). | |
| 1670 The car of each element is a regular expression which is compared | |
| 1671 with the name of the interpreter specified in the first line. | |
| 1672 If it matches, mode MODE is selected.") | |
| 1673 | |
| 1674 (defvar binary-file-regexps | |
| 444 | 1675 '("\\.\\(?:bz2\\|elc\\|g\\(if\\|z\\)\\|jp\\(eg\\|g\\)\\|png\\|t\\(ar\\|gz\\|iff\\)\\|[Zo]\\)\\'") |
| 428 | 1676 "List of regexps of filenames containing binary (non-text) data.") |
| 1677 | |
| 1678 ; (eval-when-compile | |
| 1679 ; (require 'regexp-opt) | |
| 1680 ; (list | |
| 1681 ; (format "\\.\\(?:%s\\)\\'" | |
| 1682 ; (regexp-opt | |
| 1683 ; '("tar" | |
| 1684 ; "tgz" | |
| 1685 ; "gz" | |
| 1686 ; "bz2" | |
| 1687 ; "Z" | |
| 1688 ; "o" | |
| 1689 ; "elc" | |
| 1690 ; "png" | |
| 1691 ; "gif" | |
| 1692 ; "tiff" | |
| 1693 ; "jpg" | |
| 1694 ; "jpeg")))))) | |
| 444 | 1695 |
| 428 | 1696 (defvar inhibit-first-line-modes-regexps |
| 444 | 1697 binary-file-regexps |
| 428 | 1698 "List of regexps; if one matches a file name, don't look for `-*-'.") |
| 1699 | |
| 1700 (defvar inhibit-first-line-modes-suffixes nil | |
| 1701 "List of regexps for what to ignore, for `inhibit-first-line-modes-regexps'. | |
| 1702 When checking `inhibit-first-line-modes-regexps', we first discard | |
| 1703 from the end of the file name anything that matches one of these regexps.") | |
| 1704 | |
| 1333 | 1705 ;; Junk from FSF 21.2. Unnecessary in XEmacs, since `interpreter-mode-alist' |
| 1706 ;; can have regexps. | |
| 1707 ; (defvar auto-mode-interpreter-regexp | |
| 1708 ; "#![ \t]?\\([^ \t\n]*\ | |
| 1709 ; /bin/env[ \t]\\)?\\([^ \t\n]+\\)" | |
| 1710 ; "Regular expression matching interpreters, for file mode determination. | |
| 1711 ; This regular expression is matched against the first line of a file | |
| 1712 ; to determine the file's mode in `set-auto-mode' when Emacs can't deduce | |
| 1713 ; a mode from the file's name. If it matches, the file is assumed to | |
| 1714 ; be interpreted by the interpreter matched by the second group of the | |
| 1715 ; regular expression. The mode is then determined as the mode associated | |
| 1716 ; with that interpreter in `interpreter-mode-alist'.") | |
| 1717 | |
| 428 | 1718 (defvar user-init-file |
| 1719 nil ; set by command-line | |
| 1720 "File name including directory of user's initialization file.") | |
| 1721 | |
| 1722 (defun set-auto-mode (&optional just-from-file-name) | |
| 1723 "Select major mode appropriate for current buffer. | |
| 1724 This checks for a -*- mode tag in the buffer's text, | |
| 1725 compares the filename against the entries in `auto-mode-alist', | |
| 1726 or checks the interpreter that runs this file against | |
| 1727 `interpreter-mode-alist'. | |
| 1728 | |
| 1729 It does not check for the `mode:' local variable in the | |
| 1730 Local Variables section of the file; for that, use `hack-local-variables'. | |
| 1731 | |
| 1732 If `enable-local-variables' is nil, this function does not check for a | |
| 1733 -*- mode tag. | |
| 1734 | |
| 1735 If the optional argument JUST-FROM-FILE-NAME is non-nil, | |
| 1736 then we do not set anything but the major mode, | |
| 1737 and we don't even do that unless it would come from the file name." | |
| 1738 (save-excursion | |
| 1739 ;; Look for -*-MODENAME-*- or -*- ... mode: MODENAME; ... -*- | |
| 1740 ;; Do this by calling the hack-local-variables helper to avoid redundancy. | |
| 1741 ;; We bind enable-local-variables to nil this time because we're going to | |
| 1742 ;; call hack-local-variables-prop-line again later, "for real." Note that | |
| 1743 ;; this temporary binding does not prevent hack-local-variables-prop-line | |
| 1744 ;; from setting the major mode. | |
| 1745 (or (and enable-local-variables | |
| 1746 (let ((enable-local-variables nil)) | |
| 1747 (hack-local-variables-prop-line nil)) | |
| 1748 ) | |
| 1749 ;; It's not in the -*- line, so check the auto-mode-alist, unless | |
| 1750 ;; this buffer isn't associated with a file. | |
| 1751 (null buffer-file-name) | |
| 1752 (let ((name (file-name-sans-versions buffer-file-name)) | |
| 1753 (keep-going t)) | |
| 1754 (while keep-going | |
| 1755 (setq keep-going nil) | |
| 1756 (let ((alist auto-mode-alist) | |
| 1757 (mode nil)) | |
| 440 | 1758 |
| 428 | 1759 ;; Find first matching alist entry. |
| 440 | 1760 |
| 1761 ;; #### This is incorrect. In NT, case sensitivity is a volume | |
| 1762 ;; property. For instance, NFS mounts *are* case sensitive. | |
| 1763 ;; Need internal function (file-name-case-sensitive f), F | |
| 1764 ;; being file or directory name. - kkm | |
| 428 | 1765 (let ((case-fold-search |
| 440 | 1766 (eq system-type 'windows-nt))) |
| 428 | 1767 (while (and (not mode) alist) |
| 1768 (if (string-match (car (car alist)) name) | |
| 1769 (if (and (consp (cdr (car alist))) | |
| 1770 (nth 2 (car alist))) | |
| 1771 (progn | |
| 1772 (setq mode (car (cdr (car alist))) | |
| 1773 name (substring name 0 (match-beginning 0)) | |
| 1774 keep-going t)) | |
| 1775 (setq mode (cdr (car alist)) | |
| 1776 keep-going nil))) | |
| 1777 (setq alist (cdr alist)))) | |
| 1778 (unless just-from-file-name | |
| 1779 ;; If we can't deduce a mode from the file name, | |
| 1780 ;; look for an interpreter specified in the first line. | |
| 1781 (if (and (null mode) | |
| 1782 (save-excursion ; XEmacs | |
| 1783 (goto-char (point-min)) | |
| 1784 (looking-at "#!"))) | |
| 1785 (let ((firstline | |
| 1786 (buffer-substring | |
| 1787 (point-min) | |
| 1788 (save-excursion | |
| 1789 (goto-char (point-min)) (end-of-line) (point))))) | |
| 1790 (setq alist interpreter-mode-alist) | |
| 1791 (while alist | |
| 1792 (if (string-match (car (car alist)) firstline) | |
| 1793 (progn | |
| 1794 (setq mode (cdr (car alist))) | |
| 1795 (setq alist nil)) | |
| 1796 (setq alist (cdr alist))))))) | |
| 1797 (if mode | |
| 1798 (if (not (fboundp mode)) | |
| 1799 (let ((name (package-get-package-provider mode))) | |
| 1800 (if name | |
| 1801 (message "Mode %s is not installed. Download package %s" mode name) | |
| 1802 (message "Mode %s either doesn't exist or is not a known package" mode)) | |
| 1803 (sit-for 2) | |
| 1804 (error "%s" mode)) | |
| 1805 (unless (and just-from-file-name | |
| 1806 (or | |
| 1807 ;; Don't reinvoke major mode. | |
| 1808 (eq mode major-mode) | |
| 1809 ;; Don't lose on minor modes. | |
| 1810 (assq mode minor-mode-alist))) | |
| 1811 (funcall mode)))))))))) | |
| 1812 | |
| 1813 (defvar hack-local-variables-hook nil | |
| 1814 "Normal hook run after processing a file's local variables specs. | |
| 1815 Major modes can use this to examine user-specified local variables | |
| 1816 in order to initialize other data structure based on them. | |
| 1817 | |
| 1818 This hook runs even if there were no local variables or if their | |
| 1819 evaluation was suppressed. See also `enable-local-variables' and | |
| 1820 `enable-local-eval'.") | |
| 1821 | |
| 1822 (defun hack-local-variables (&optional force) | |
| 1823 "Parse, and bind or evaluate as appropriate, any local variables | |
| 1824 for current buffer." | |
| 1825 ;; Don't look for -*- if this file name matches any | |
| 1826 ;; of the regexps in inhibit-first-line-modes-regexps. | |
| 1827 (if (or (null buffer-file-name) ; don't lose if buffer has no file! | |
| 1828 (not (let ((temp inhibit-first-line-modes-regexps) | |
| 1829 (name (if buffer-file-name | |
| 1830 (file-name-sans-versions buffer-file-name) | |
| 1831 (buffer-name)))) | |
| 1832 (while (let ((sufs inhibit-first-line-modes-suffixes)) | |
| 1833 (while (and sufs (not | |
| 1834 (string-match (car sufs) name))) | |
| 1835 (setq sufs (cdr sufs))) | |
| 1836 sufs) | |
| 1837 (setq name (substring name 0 (match-beginning 0)))) | |
| 1838 (while (and temp | |
| 1839 (not (string-match (car temp) name))) | |
| 1840 (setq temp (cdr temp)) | |
| 1841 temp)))) | |
| 1842 (progn | |
| 1843 ;; Look for variables in the -*- line. | |
| 1844 (hack-local-variables-prop-line force) | |
| 1845 ;; Look for "Local variables:" block in last page. | |
| 1846 (hack-local-variables-last-page force))) | |
| 1847 (run-hooks 'hack-local-variables-hook)) | |
| 1848 | |
| 1849 ;;; Local variables may be specified in the last page of the file (within 3k | |
| 1850 ;;; from the end of the file and after the last ^L) in the form | |
| 1851 ;;; | |
| 1852 ;;; Local variables: | |
| 1853 ;;; variable-name: variable-value | |
| 1854 ;;; end: | |
| 1855 ;;; | |
| 1856 ;;; The lines may begin with a common prefix, like ";;; " in the above | |
| 1857 ;;; example. They may also have a common suffix (" */" for example). In | |
| 1858 ;;; this form, the local variable "mode" can be used to change the major | |
| 1859 ;;; mode, and the local variable "eval" can be used to evaluate an arbitrary | |
| 1860 ;;; form. | |
| 1861 ;;; | |
| 1862 ;;; Local variables may also be specified in the first line of the file. | |
| 1863 ;;; Embedded in this line are a pair of "-*-" sequences. What lies between | |
| 1864 ;;; them are variable-name/variable-value pairs, like: | |
| 1865 ;;; | |
| 1866 ;;; -*- mode: emacs-lisp -*- | |
| 1867 ;;; or -*- mode: postscript; version-control: never -*- | |
| 1868 ;;; or -*- tags-file-name: "/foo/bar/TAGS" -*- | |
| 1869 ;;; | |
| 1870 ;;; The local variable "eval" is not used with this form. For hysterical | |
| 1871 ;;; reasons, the syntax "-*- modename -*-" is allowed as well. | |
| 1872 ;;; | |
| 1873 | |
| 1874 (defun hack-local-variables-p (modeline) | |
| 1875 (or (eq enable-local-variables t) | |
| 1876 (and enable-local-variables | |
| 1877 (save-window-excursion | |
| 1878 (condition-case nil | |
| 1879 (switch-to-buffer (current-buffer)) | |
| 1880 (error | |
| 1881 ;; If we fail to switch in the selected window, | |
| 1882 ;; it is probably a minibuffer. | |
| 1883 ;; So try another window. | |
| 1884 (condition-case nil | |
| 1885 (switch-to-buffer-other-window (current-buffer)) | |
| 1886 (error | |
| 1887 (switch-to-buffer-other-frame (current-buffer)))))) | |
| 1888 (or modeline (save-excursion | |
| 1889 (beginning-of-line) | |
| 1890 (set-window-start (selected-window) (point)))) | |
| 1891 (y-or-n-p (format | |
| 1892 "Set local variables as specified %s of %s? " | |
| 1893 (if modeline "in -*- line" "at end") | |
| 1894 (if buffer-file-name | |
| 1895 (file-name-nondirectory buffer-file-name) | |
| 1896 (concat "buffer " (buffer-name))))))))) | |
| 1897 | |
| 1898 (defun hack-local-variables-last-page (&optional force) | |
| 1899 ;; Set local variables set in the "Local Variables:" block of the last page. | |
| 1900 (save-excursion | |
| 1901 (goto-char (point-max)) | |
| 1902 (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move) | |
| 1903 (if (let ((case-fold-search t)) | |
| 1904 (and (search-forward "Local Variables:" nil t) | |
| 1905 (or force | |
| 1906 (hack-local-variables-p nil)))) | |
| 1907 (let ((continue t) | |
| 444 | 1908 prefix prefixlen suffix start |
| 428 | 1909 (enable-local-eval enable-local-eval)) |
| 1910 ;; The prefix is what comes before "local variables:" in its line. | |
| 1911 ;; The suffix is what comes after "local variables:" in its line. | |
| 1912 (skip-chars-forward " \t") | |
| 1913 (or (eolp) | |
| 1914 (setq suffix (buffer-substring (point) | |
| 1915 (progn (end-of-line) (point))))) | |
| 1916 (goto-char (match-beginning 0)) | |
| 1917 (or (bolp) | |
| 1918 (setq prefix | |
| 1919 (buffer-substring (point) | |
| 1920 (progn (beginning-of-line) (point))))) | |
| 1921 (if prefix (setq prefixlen (length prefix) | |
| 1922 prefix (regexp-quote prefix))) | |
| 1923 (if suffix (setq suffix (concat (regexp-quote suffix) "$"))) | |
| 1924 (while continue | |
| 1925 ;; Look at next local variable spec. | |
| 1926 (if selective-display (re-search-forward "[\n\C-m]") | |
| 1927 (forward-line 1)) | |
| 1928 ;; Skip the prefix, if any. | |
| 1929 (if prefix | |
| 1930 (if (looking-at prefix) | |
| 1931 (forward-char prefixlen) | |
| 1932 (error "Local variables entry is missing the prefix"))) | |
| 1933 ;; Find the variable name; strip whitespace. | |
| 1934 (skip-chars-forward " \t") | |
| 444 | 1935 (setq start (point)) |
| 428 | 1936 (skip-chars-forward "^:\n") |
| 1937 (if (eolp) (error "Missing colon in local variables entry")) | |
| 1938 (skip-chars-backward " \t") | |
| 444 | 1939 (let* ((str (buffer-substring start (point))) |
| 428 | 1940 (var (read str)) |
| 1941 val) | |
| 1942 ;; Setting variable named "end" means end of list. | |
| 801 | 1943 (if (equalp str "end") |
| 428 | 1944 (setq continue nil) |
| 1945 ;; Otherwise read the variable value. | |
| 1946 (skip-chars-forward "^:") | |
| 1947 (forward-char 1) | |
| 1948 (setq val (read (current-buffer))) | |
| 1949 (skip-chars-backward "\n") | |
| 1950 (skip-chars-forward " \t") | |
| 1951 (or (if suffix (looking-at suffix) (eolp)) | |
| 1952 (error "Local variables entry is terminated incorrectly")) | |
| 1953 ;; Set the variable. "Variables" mode and eval are funny. | |
| 1954 (hack-one-local-variable var val)))))))) | |
| 1955 | |
| 1956 ;; jwz - New Version 20.1/19.15 | |
| 1957 (defun hack-local-variables-prop-line (&optional force) | |
| 1958 ;; Set local variables specified in the -*- line. | |
| 1959 ;; Returns t if mode was set. | |
| 1960 (let ((result nil)) | |
| 1961 (save-excursion | |
| 1962 (goto-char (point-min)) | |
| 1963 (skip-chars-forward " \t\n\r") | |
| 1964 (let ((end (save-excursion | |
| 1965 ;; If the file begins with "#!" | |
| 1966 ;; (un*x exec interpreter magic), look | |
| 1967 ;; for mode frobs in the first two | |
| 1968 ;; lines. You cannot necessarily | |
| 1969 ;; put them in the first line of | |
| 1970 ;; such a file without screwing up | |
| 1971 ;; the interpreter invocation. | |
| 1972 (end-of-line (and (looking-at "^#!") 2)) | |
| 1973 (point)))) | |
| 1974 ;; Parse the -*- line into the `result' alist. | |
| 1975 (cond ((not (search-forward "-*-" end t)) | |
| 1976 ;; doesn't have one. | |
| 1977 (setq force t)) | |
| 442 | 1978 ((looking-at "[ \t]*\\([^ \t\n\r:;]+?\\)\\([ \t]*-\\*-\\)") |
| 428 | 1979 ;; Antiquated form: "-*- ModeName -*-". |
| 1980 (setq result | |
| 1981 (list (cons 'mode | |
| 1982 (intern (buffer-substring | |
| 1983 (match-beginning 1) | |
| 1984 (match-end 1))))) | |
| 1985 )) | |
| 1986 (t | |
| 1987 ;; Usual form: '-*-' [ <variable> ':' <value> ';' ]* '-*-' | |
| 1988 ;; (last ";" is optional). | |
| 1989 (save-excursion | |
| 1990 (if (search-forward "-*-" end t) | |
| 1991 (setq end (- (point) 3)) | |
| 1992 (error "-*- not terminated before end of line"))) | |
| 1993 (while (< (point) end) | |
| 1994 (or (looking-at "[ \t]*\\([^ \t\n:]+\\)[ \t]*:[ \t]*") | |
| 1995 (error "malformed -*- line")) | |
| 1996 (goto-char (match-end 0)) | |
| 1997 ;; There used to be a downcase here, | |
| 1998 ;; but the manual didn't say so, | |
| 1999 ;; and people want to set var names that aren't all lc. | |
| 2000 (let ((key (intern (buffer-substring | |
| 2001 (match-beginning 1) | |
| 2002 (match-end 1)))) | |
| 2003 (val (save-restriction | |
| 2004 (narrow-to-region (point) end) | |
| 2005 (read (current-buffer))))) | |
| 2006 ;; Case sensitivity! Icepicks in my forehead! | |
| 801 | 2007 (if (equalp (symbol-name key) "mode") |
| 428 | 2008 (setq key 'mode)) |
| 2009 (setq result (cons (cons key val) result)) | |
| 2010 (skip-chars-forward " \t;"))) | |
| 2011 (setq result (nreverse result)))))) | |
| 2012 | |
| 2013 (let ((set-any-p (or force | |
| 2014 ;; It's OK to force null specifications. | |
| 2015 (null result) | |
| 2016 ;; It's OK to force mode-only specifications. | |
| 2017 (let ((remaining result) | |
| 2018 (mode-specs-only t)) | |
| 2019 (while remaining | |
| 2020 (if (eq (car (car remaining)) 'mode) | |
| 2021 (setq remaining (cdr remaining)) | |
| 2022 ;; Otherwise, we have a real local. | |
| 2023 (setq mode-specs-only nil | |
| 2024 remaining nil)) | |
| 2025 ) | |
| 2026 mode-specs-only) | |
| 2027 ;; Otherwise, check. | |
| 2028 (hack-local-variables-p t))) | |
| 2029 (mode-p nil)) | |
| 2030 (while result | |
| 2031 (let ((key (car (car result))) | |
| 2032 (val (cdr (car result)))) | |
| 2033 (cond ((eq key 'mode) | |
| 2034 (setq mode-p t) | |
| 2035 (let ((mode (intern (concat (downcase (symbol-name val)) | |
| 2036 "-mode")))) | |
| 2037 ;; Without this guard, `normal-mode' would potentially run | |
| 2038 ;; the major mode function twice: once via `set-auto-mode' | |
| 2039 ;; and once via `hack-local-variables'. | |
|
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2040 (if (and (not (eq mode major-mode)) (fboundp mode)) |
| 428 | 2041 (funcall mode)) |
| 2042 )) | |
| 2043 (set-any-p | |
| 2044 (hack-one-local-variable key val)) | |
| 2045 (t | |
| 2046 nil))) | |
| 2047 (setq result (cdr result))) | |
| 2048 mode-p))) | |
| 2049 | |
| 1333 | 2050 ;; BEGIN SYNC WITH FSF 21.2. |
| 2051 | |
| 428 | 2052 (defconst ignored-local-variables |
| 2053 (list 'enable-local-eval) | |
| 2054 "Variables to be ignored in a file's local variable spec.") | |
| 2055 | |
| 2056 ;; Get confirmation before setting these variables as locals in a file. | |
| 2057 (put 'debugger 'risky-local-variable t) | |
| 2058 (put 'enable-local-eval 'risky-local-variable t) | |
| 2059 (put 'ignored-local-variables 'risky-local-variable t) | |
| 2060 (put 'eval 'risky-local-variable t) | |
| 2061 (put 'file-name-handler-alist 'risky-local-variable t) | |
| 2062 (put 'minor-mode-map-alist 'risky-local-variable t) | |
| 2063 (put 'after-load-alist 'risky-local-variable t) | |
| 2064 (put 'buffer-file-name 'risky-local-variable t) | |
| 2065 (put 'buffer-auto-save-file-name 'risky-local-variable t) | |
| 2066 (put 'buffer-file-truename 'risky-local-variable t) | |
| 2067 (put 'exec-path 'risky-local-variable t) | |
| 2068 (put 'load-path 'risky-local-variable t) | |
| 2069 (put 'exec-directory 'risky-local-variable t) | |
| 2070 (put 'process-environment 'risky-local-variable t) | |
| 1333 | 2071 (put 'dabbrev-case-fold-search 'risky-local-variable t) |
| 2072 (put 'dabbrev-case-replace 'risky-local-variable t) | |
| 428 | 2073 ;; Don't wait for outline.el to be loaded, for the sake of outline-minor-mode. |
| 2074 (put 'outline-level 'risky-local-variable t) | |
| 2075 (put 'rmail-output-file-alist 'risky-local-variable t) | |
| 2076 | |
| 2077 ;; This one is safe because the user gets to check it before it is used. | |
| 2078 (put 'compile-command 'safe-local-variable t) | |
| 2079 | |
| 1333 | 2080 (defun hack-one-local-variable-quotep (exp) |
| 2081 (and (consp exp) (eq (car exp) 'quote) (consp (cdr exp)))) | |
| 2082 | |
| 428 | 2083 (defun hack-one-local-variable (var val) |
| 1333 | 2084 "\"Set\" one variable in a local variables spec. |
| 2085 A few variable names are treated specially." | |
| 428 | 2086 (cond ((eq var 'mode) |
|
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2087 (and (fboundp (setq val (intern (concat (downcase (symbol-name val)) |
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2088 "-mode")))) |
|
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|
2089 (funcall val))) |
| 1333 | 2090 ((eq var 'coding) |
| 2091 ;; We have already handled coding: tag in set-auto-coding. | |
| 2092 nil) | |
| 428 | 2093 ((memq var ignored-local-variables) |
| 2094 nil) | |
| 2095 ;; "Setting" eval means either eval it or do nothing. | |
| 2096 ;; Likewise for setting hook variables. | |
| 2097 ((or (get var 'risky-local-variable) | |
| 2098 (and | |
| 1333 | 2099 (string-match "-hooks?$\\|-functions?$\\|-forms?$\\|-program$\\|-command$\\|-predicate$" |
| 428 | 2100 (symbol-name var)) |
| 2101 (not (get var 'safe-local-variable)))) | |
| 1333 | 2102 ;; Permit evalling a put of a harmless property. |
| 2103 ;; if the args do nothing tricky. | |
| 2104 (if (or (and (eq var 'eval) | |
| 2105 (consp val) | |
| 2106 (eq (car val) 'put) | |
| 2107 (hack-one-local-variable-quotep (nth 1 val)) | |
| 2108 (hack-one-local-variable-quotep (nth 2 val)) | |
| 2109 ;; Only allow safe values of lisp-indent-hook; | |
| 2110 ;; not functions. | |
| 2111 (or (numberp (nth 3 val)) | |
| 2112 (equal (nth 3 val) ''defun)) | |
| 2113 (memq (nth 1 (nth 2 val)) | |
| 2114 '(lisp-indent-hook))) | |
| 2115 ;; Permit eval if not root and user says ok. | |
| 2116 (and (not (zerop (user-uid))) | |
| 2117 (or (eq enable-local-eval t) | |
| 2118 (and enable-local-eval | |
| 2119 (save-window-excursion | |
| 2120 (switch-to-buffer (current-buffer)) | |
| 2121 (save-excursion | |
| 2122 (beginning-of-line) | |
| 2123 (set-window-start (selected-window) (point))) | |
| 2124 (setq enable-local-eval | |
| 2125 (y-or-n-p (format "Process `eval' or hook local variables in %s? " | |
| 2126 (if buffer-file-name | |
| 2127 (concat "file " (file-name-nondirectory buffer-file-name)) | |
| 2128 (concat "buffer " (buffer-name))))))))))) | |
| 428 | 2129 (if (eq var 'eval) |
| 2130 (save-excursion (eval val)) | |
| 2131 (make-local-variable var) | |
| 2132 (set var val)) | |
| 1333 | 2133 (message "Ignoring `eval:' in the local variables list"))) |
| 428 | 2134 ;; Ordinary variable, really set it. |
| 2135 (t (make-local-variable var) | |
| 2136 (set var val)))) | |
| 502 | 2137 |
| 2138 (defun find-coding-system-magic-cookie-in-file (file) | |
| 2139 "Look for the coding-system magic cookie in FILE. | |
| 2140 The coding-system magic cookie is either the local variable specification | |
| 2141 -*- ... coding: ... -*- on the first line, or the exact string | |
| 2142 \";;;###coding system: \" somewhere within the first 3000 characters | |
| 2143 of the file. If found, the coding system name (as a string) is returned; | |
| 2144 otherwise nil is returned. Note that it is extremely unlikely that | |
| 2145 either such string would occur coincidentally as the result of encoding | |
| 2146 some characters in a non-ASCII charset, and that the spaces make it | |
| 2147 even less likely since the space character is not a valid octet in any | |
| 2148 ISO 2022 encoding of most non-ASCII charsets." | |
| 2149 (save-excursion | |
| 2150 (with-temp-buffer | |
| 2151 (let ((coding-system-for-read 'raw-text)) | |
| 2434 | 2152 (insert-file-contents file nil 0 3000)) |
| 502 | 2153 (goto-char (point-min)) |
| 2154 (or (and (looking-at | |
| 2155 "^[^\n]*-\\*-[^\n]*coding: \\([^ \t\n;]+\\)[^\n]*-\\*-") | |
| 2156 (buffer-substring (match-beginning 1) (match-end 1))) | |
| 2157 ;; (save-excursion | |
| 2158 ;; (let (start end) | |
| 2159 ;; (and (re-search-forward "^;+[ \t]*Local Variables:" nil t) | |
| 2160 ;; (setq start (match-end 0)) | |
| 2161 ;; (re-search-forward "\n;+[ \t]*End:") | |
| 2162 ;; (setq end (match-beginning 0)) | |
| 2163 ;; (save-restriction | |
| 2164 ;; (narrow-to-region start end) | |
| 2165 ;; (goto-char start) | |
| 2166 ;; (re-search-forward "^;;; coding: \\([^\n]+\\)$" nil t) | |
| 2167 ;; ) | |
| 2168 ;; (let ((codesys | |
| 2169 ;; (intern (buffer-substring | |
| 2170 ;; (match-beginning 1)(match-end 1))))) | |
| 2171 ;; (if (find-coding-system codesys) codesys)) | |
| 2172 ;; ))) | |
| 2173 (let ((case-fold-search nil)) | |
| 2174 (if (search-forward | |
| 2175 ";;;###coding system: " (+ (point-min) 3000) t) | |
| 2176 (let ((start (point)) | |
| 2177 (end (progn | |
| 2178 (skip-chars-forward "^ \t\n\r") | |
| 2179 (point)))) | |
| 2180 (if (> end start) (buffer-substring start end)) | |
| 2181 ))) | |
| 2182 )))) | |
| 428 | 2183 |
| 1333 | 2184 |
| 428 | 2185 (defcustom change-major-mode-with-file-name t |
| 2186 "*Non-nil means \\[write-file] should set the major mode from the file name. | |
| 2187 However, the mode will not be changed if | |
| 2188 \(1) a local variables list or the `-*-' line specifies a major mode, or | |
| 2189 \(2) the current major mode is a \"special\" mode, | |
| 2190 \ not suitable for ordinary files, or | |
| 2191 \(3) the new file name does not particularly specify any mode." | |
| 2192 :type 'boolean | |
| 2193 :group 'editing-basics) | |
| 2194 | |
| 2195 (defun set-visited-file-name (filename &optional no-query along-with-file) | |
| 2196 "Change name of file visited in current buffer to FILENAME. | |
| 2197 The next time the buffer is saved it will go in the newly specified file. | |
| 2198 nil or empty string as argument means make buffer not be visiting any file. | |
| 2199 Remember to delete the initial contents of the minibuffer | |
| 2200 if you wish to pass an empty string as the argument. | |
| 2201 | |
| 2202 The optional second argument NO-QUERY, if non-nil, inhibits asking for | |
| 2203 confirmation in the case where another buffer is already visiting FILENAME. | |
| 2204 | |
| 2205 The optional third argument ALONG-WITH-FILE, if non-nil, means that | |
| 2206 the old visited file has been renamed to the new name FILENAME." | |
| 2207 (interactive "FSet visited file name: ") | |
| 2208 (if (buffer-base-buffer) | |
| 2209 (error "An indirect buffer cannot visit a file")) | |
| 2210 (let (truename) | |
| 2211 (if filename | |
| 2212 (setq filename | |
| 2213 (if (string-equal filename "") | |
| 2214 nil | |
| 2215 (expand-file-name filename)))) | |
| 2216 (if filename | |
| 2217 (progn | |
| 2218 (setq truename (file-truename filename)) | |
| 2219 ;; #### Do we need to check if truename is non-nil? | |
| 2220 (if find-file-use-truenames | |
| 2221 (setq filename truename)))) | |
| 2222 (let ((buffer (and filename (find-buffer-visiting filename)))) | |
| 2223 (and buffer (not (eq buffer (current-buffer))) | |
| 2224 (not no-query) | |
| 2225 (not (y-or-n-p (message "A buffer is visiting %s; proceed? " | |
| 2226 filename))) | |
| 2227 (error "Aborted"))) | |
| 2228 (or (equal filename buffer-file-name) | |
| 2229 (progn | |
| 2230 (and filename (lock-buffer filename)) | |
| 2231 (unlock-buffer))) | |
| 2232 (setq buffer-file-name filename) | |
| 2233 (if filename ; make buffer name reflect filename. | |
| 2234 (let ((new-name (file-name-nondirectory buffer-file-name))) | |
| 2235 (if (string= new-name "") | |
| 2236 (error "Empty file name")) | |
| 2237 (setq default-directory (file-name-directory buffer-file-name)) | |
| 2238 (or (string= new-name (buffer-name)) | |
| 2239 (rename-buffer new-name t)))) | |
| 2240 (setq buffer-backed-up nil) | |
| 2241 (or along-with-file | |
| 2242 (clear-visited-file-modtime)) | |
| 2243 (compute-buffer-file-truename) ; insert-file-contents does this too. | |
| 2244 ; ;; Abbreviate the file names of the buffer. | |
| 2245 ; (if truename | |
| 2246 ; (progn | |
| 2247 ; (setq buffer-file-truename (abbreviate-file-name truename)) | |
| 2248 ; (if find-file-visit-truename | |
| 2249 ; (setq buffer-file-name buffer-file-truename)))) | |
| 2250 (setq buffer-file-number | |
| 2251 (if filename | |
| 2252 (nthcdr 10 (file-attributes buffer-file-name)) | |
| 2253 nil))) | |
| 2254 ;; write-file-hooks is normally used for things like ftp-find-file | |
| 2255 ;; that visit things that are not local files as if they were files. | |
| 2256 ;; Changing to visit an ordinary local file instead should flush the hook. | |
| 2257 (kill-local-variable 'write-file-hooks) | |
| 2258 (kill-local-variable 'after-save-hook) | |
| 2259 (kill-local-variable 'local-write-file-hooks) | |
| 2260 (kill-local-variable 'write-file-data-hooks) | |
| 2261 (kill-local-variable 'revert-buffer-function) | |
| 2262 (kill-local-variable 'backup-inhibited) | |
| 2263 ;; If buffer was read-only because of version control, | |
| 2264 ;; that reason is gone now, so make it writable. | |
| 502 | 2265 (if-boundp 'vc-mode |
| 2266 (progn | |
| 2267 (if vc-mode | |
| 2268 (setq buffer-read-only nil)) | |
| 2269 (kill-local-variable 'vc-mode))) | |
| 428 | 2270 ;; Turn off backup files for certain file names. |
| 2271 ;; Since this is a permanent local, the major mode won't eliminate it. | |
| 2272 (and buffer-file-name | |
| 2273 (not (funcall backup-enable-predicate buffer-file-name)) | |
| 2274 (progn | |
| 2275 (make-local-variable 'backup-inhibited) | |
| 2276 (setq backup-inhibited t))) | |
| 2277 (let ((oauto buffer-auto-save-file-name)) | |
| 2278 ;; If auto-save was not already on, turn it on if appropriate. | |
| 2279 (if (not buffer-auto-save-file-name) | |
| 2280 (and buffer-file-name auto-save-default | |
| 2281 (auto-save-mode t)) | |
| 2282 ;; If auto save is on, start using a new name. | |
| 2283 ;; We deliberately don't rename or delete the old auto save | |
| 2284 ;; for the old visited file name. This is because perhaps | |
| 2285 ;; the user wants to save the new state and then compare with the | |
| 2286 ;; previous state from the auto save file. | |
| 2287 (setq buffer-auto-save-file-name | |
| 2288 (make-auto-save-file-name))) | |
| 2289 ;; Rename the old auto save file if any. | |
| 2290 (and oauto buffer-auto-save-file-name | |
| 2291 (file-exists-p oauto) | |
| 2292 (rename-file oauto buffer-auto-save-file-name t))) | |
| 2293 (if buffer-file-name | |
| 2294 (not along-with-file) | |
| 2295 (set-buffer-modified-p t)) | |
| 2296 ;; Update the major mode, if the file name determines it. | |
| 2297 (condition-case nil | |
| 2298 ;; Don't change the mode if it is special. | |
| 2299 (or (not change-major-mode-with-file-name) | |
| 2300 (get major-mode 'mode-class) | |
| 2301 ;; Don't change the mode if the local variable list specifies it. | |
| 2302 (hack-local-variables t) | |
| 2303 (set-auto-mode t)) | |
| 2304 (error nil)) | |
| 1333 | 2305 ;; #### ?? not in FSF. |
| 428 | 2306 (run-hooks 'after-set-visited-file-name-hooks)) |
| 2307 | |
| 2308 (defun write-file (filename &optional confirm codesys) | |
| 2309 "Write current buffer into file FILENAME. | |
| 1333 | 2310 This makes the buffer visit that file, and marks it as not modified. |
| 2311 | |
| 2312 If you specify just a directory name as FILENAME, that means to use | |
| 2313 the default file name but in that directory. You can also yank | |
| 2314 the default file name into the minibuffer to edit it, using M-n. | |
| 2315 | |
| 2316 If the buffer is not already visiting a file, the default file name | |
| 2317 for the output file is the buffer name. | |
| 2318 | |
| 2319 If optional second arg CONFIRM is non-nil, this function | |
| 2320 asks for confirmation before overwriting an existing file. | |
| 2321 Interactively, this is always the case. | |
| 771 | 2322 |
| 2323 Optional third argument specifies the coding system to use when encoding | |
| 2324 the file. Interactively, with a prefix argument, you will be prompted for | |
| 2325 the coding system." | |
| 428 | 2326 ;; (interactive "FWrite file: ") |
| 2327 (interactive | |
| 2328 (list (if buffer-file-name | |
| 2329 (read-file-name "Write file: " | |
| 2330 nil nil nil nil) | |
| 1333 | 2331 (read-file-name "Write file: " default-directory |
| 2332 (expand-file-name | |
| 2333 (file-name-nondirectory (buffer-name)) | |
| 2334 default-directory) | |
| 2335 nil nil)) | |
| 428 | 2336 t |
| 771 | 2337 (if current-prefix-arg (read-coding-system "Coding system: ")))) |
| 428 | 2338 (and (eq (current-buffer) mouse-grabbed-buffer) |
| 2339 (error "Can't write minibuffer window")) | |
| 2340 (or (null filename) (string-equal filename "") | |
| 2341 (progn | |
| 2342 ;; If arg is just a directory, | |
| 1333 | 2343 ;; use the default file name, but in that directory. |
| 2344 (if (file-directory-p filename) | |
| 428 | 2345 (setq filename (concat (file-name-as-directory filename) |
| 1333 | 2346 (file-name-nondirectory |
| 2347 (or buffer-file-name (buffer-name)))))) | |
| 428 | 2348 (and confirm |
| 2349 (file-exists-p filename) | |
| 2350 (or (y-or-n-p (format "File `%s' exists; overwrite? " filename)) | |
| 2351 (error "Canceled"))) | |
| 1333 | 2352 (set-visited-file-name filename (not confirm)))) |
| 428 | 2353 (set-buffer-modified-p t) |
| 1333 | 2354 ;; Make buffer writable if file is writable. |
| 2355 (and buffer-file-name | |
| 2356 (file-writable-p buffer-file-name) | |
| 2357 (setq buffer-read-only nil)) | |
| 428 | 2358 (if codesys |
| 2359 (let ((buffer-file-coding-system (get-coding-system codesys))) | |
| 2360 (save-buffer)) | |
| 2361 (save-buffer))) | |
| 2362 | |
| 1333 | 2363 |
| 428 | 2364 (defun backup-buffer () |
| 2365 "Make a backup of the disk file visited by the current buffer, if appropriate. | |
| 2366 This is normally done before saving the buffer the first time. | |
| 1333 | 2367 If the value is non-nil, it is the result of `file-modes' on the original |
| 2368 file; this means that the caller, after saving the buffer, should change | |
| 2369 the modes of the new file to agree with the old modes. | |
| 2370 | |
| 2371 A backup may be done by renaming or by copying; see documentation of | |
| 2372 variable `make-backup-files'. If it's done by renaming, then the file is | |
| 2373 no longer accessible under its old name." | |
| 428 | 2374 (if buffer-file-name |
| 2375 (let ((handler (find-file-name-handler buffer-file-name 'backup-buffer))) | |
| 2376 (if handler | |
| 2377 (funcall handler 'backup-buffer) | |
| 2378 (if (and make-backup-files | |
| 2379 (not backup-inhibited) | |
| 2380 (not buffer-backed-up) | |
| 2381 (file-exists-p buffer-file-name) | |
| 2382 (memq (aref (elt (file-attributes buffer-file-name) 8) 0) | |
| 2383 '(?- ?l))) | |
| 2384 (let ((real-file-name buffer-file-name) | |
| 2385 backup-info backupname targets setmodes) | |
| 2386 ;; If specified name is a symbolic link, chase it to the target. | |
| 2387 ;; Thus we make the backups in the directory where the real file is. | |
| 2388 (setq real-file-name (file-chase-links real-file-name)) | |
| 2389 (setq backup-info (find-backup-file-name real-file-name) | |
| 2390 backupname (car backup-info) | |
| 2391 targets (cdr backup-info)) | |
| 2392 ;;; (if (file-directory-p buffer-file-name) | |
| 2393 ;;; (error "Cannot save buffer in directory %s" buffer-file-name)) | |
| 2394 (if backup-info | |
| 2395 (condition-case () | |
| 2396 (let ((delete-old-versions | |
| 2397 ;; If have old versions to maybe delete, | |
| 2398 ;; ask the user to confirm now, before doing anything. | |
| 440 | 2399 ;; But don't actually delete till later. |
| 428 | 2400 (and targets |
| 2401 (or (eq delete-old-versions t) | |
| 2402 (eq delete-old-versions nil)) | |
| 2403 (or delete-old-versions | |
| 2404 (y-or-n-p (format "Delete excess backup versions of %s? " | |
| 2405 real-file-name)))))) | |
| 2406 ;; Actually write the back up file. | |
| 2407 (condition-case () | |
| 2408 (if (or file-precious-flag | |
| 2409 ; (file-symlink-p buffer-file-name) | |
| 2410 backup-by-copying | |
| 2411 (and backup-by-copying-when-linked | |
| 2412 (> (file-nlinks real-file-name) 1)) | |
| 1333 | 2413 (and (or backup-by-copying-when-mismatch |
| 2414 (integerp backup-by-copying-when-privileged-mismatch)) | |
| 428 | 2415 (let ((attr (file-attributes real-file-name))) |
| 1333 | 2416 (and (or backup-by-copying-when-mismatch |
| 2417 (and (integerp (nth 2 attr)) | |
| 2418 (integerp backup-by-copying-when-privileged-mismatch) | |
| 2419 (<= (nth 2 attr) backup-by-copying-when-privileged-mismatch))) | |
| 2420 (or (nth 9 attr) | |
| 2421 (not (file-ownership-preserved-p real-file-name))))))) | |
| 428 | 2422 (condition-case () |
| 2423 (copy-file real-file-name backupname t t) | |
| 2424 (file-error | |
| 2425 ;; If copying fails because file BACKUPNAME | |
| 2426 ;; is not writable, delete that file and try again. | |
| 2427 (if (and (file-exists-p backupname) | |
| 2428 (not (file-writable-p backupname))) | |
| 2429 (delete-file backupname)) | |
| 2430 (copy-file real-file-name backupname t t))) | |
| 2431 ;; rename-file should delete old backup. | |
| 2432 (rename-file real-file-name backupname t) | |
| 2433 (setq setmodes (file-modes backupname))) | |
| 2434 (file-error | |
| 2710 | 2435 ;; If trouble writing the backup, write |
| 2436 ;; it in `auto-save-directory'. Fall | |
| 2437 ;; back to $HOME if that's not possible. | |
| 464 | 2438 (setq backupname |
| 2710 | 2439 (expand-file-name "%backup%~" |
| 2440 (or (when (and auto-save-directory | |
| 2441 (file-writable-p auto-save-directory)) | |
| 2442 auto-save-directory) | |
| 2443 (getenv "HOME")))) | |
| 1333 | 2444 (lwarn 'file 'alert "Cannot write backup file; backing up in %s" |
| 2445 (file-name-nondirectory backupname)) | |
| 428 | 2446 (sleep-for 1) |
| 2447 (condition-case () | |
| 2448 (copy-file real-file-name backupname t t) | |
| 2449 (file-error | |
| 2450 ;; If copying fails because file BACKUPNAME | |
| 2451 ;; is not writable, delete that file and try again. | |
| 2452 (if (and (file-exists-p backupname) | |
| 2453 (not (file-writable-p backupname))) | |
| 2454 (delete-file backupname)) | |
| 2455 (copy-file real-file-name backupname t t))))) | |
| 2456 (setq buffer-backed-up t) | |
| 2457 ;; Now delete the old versions, if desired. | |
| 2458 (if delete-old-versions | |
| 2459 (while targets | |
| 2460 (ignore-file-errors (delete-file (car targets))) | |
| 2461 (setq targets (cdr targets)))) | |
| 2462 setmodes) | |
| 2463 (file-error nil))))))))) | |
| 2464 | |
| 2465 (defun file-name-sans-versions (name &optional keep-backup-version) | |
| 2466 "Return FILENAME sans backup versions or strings. | |
| 2467 This is a separate procedure so your site-init or startup file can | |
| 2468 redefine it. | |
| 2469 If the optional argument KEEP-BACKUP-VERSION is non-nil, | |
| 2470 we do not remove backup version numbers, only true file version numbers." | |
| 2471 (let ((handler (find-file-name-handler name 'file-name-sans-versions))) | |
| 2472 (if handler | |
| 2473 (funcall handler 'file-name-sans-versions name keep-backup-version) | |
| 2474 (substring name 0 | |
| 2475 (if keep-backup-version | |
| 2476 (length name) | |
| 2477 (or (string-match "\\.~[0-9.]+~\\'" name) | |
| 2478 ;; XEmacs - VC uses extensions like ".~tagname~" or ".~1.1.5.2~" | |
| 2479 (let ((pos (string-match "\\.~\\([^.~ \t]+\\|[0-9.]+\\)~\\'" name))) | |
| 2480 (and pos | |
| 2481 ;; #### - is this filesystem check too paranoid? | |
| 2482 (file-exists-p (substring name 0 pos)) | |
| 2483 pos)) | |
| 2484 (string-match "~\\'" name) | |
| 2485 (length name))))))) | |
| 2486 | |
| 2487 (defun file-ownership-preserved-p (file) | |
| 2488 "Return t if deleting FILE and rewriting it would preserve the owner." | |
| 2489 (let ((handler (find-file-name-handler file 'file-ownership-preserved-p))) | |
| 2490 (if handler | |
| 2491 (funcall handler 'file-ownership-preserved-p file) | |
| 2492 (let ((attributes (file-attributes file))) | |
| 2493 ;; Return t if the file doesn't exist, since it's true that no | |
| 2494 ;; information would be lost by an (attempted) delete and create. | |
| 2495 (or (null attributes) | |
| 2496 (= (nth 2 attributes) (user-uid))))))) | |
| 2497 | |
| 2498 (defun file-name-sans-extension (filename) | |
| 2499 "Return FILENAME sans final \"extension\". | |
| 2500 The extension, in a file name, is the part that follows the last `.'." | |
| 2501 (save-match-data | |
| 2502 (let ((file (file-name-sans-versions (file-name-nondirectory filename))) | |
| 2503 directory) | |
| 2504 (if (string-match "\\.[^.]*\\'" file) | |
| 2505 (if (setq directory (file-name-directory filename)) | |
| 2506 (expand-file-name (substring file 0 (match-beginning 0)) | |
| 2507 directory) | |
| 2508 (substring file 0 (match-beginning 0))) | |
| 2509 filename)))) | |
| 2510 | |
| 2511 (defun file-name-extension (filename &optional period) | |
| 2512 "Return FILENAME's final \"extension\". | |
| 2513 The extension, in a file name, is the part that follows the last `.'. | |
| 2514 Return nil for extensionless file names such as `foo'. | |
| 3061 | 2515 Return the empty string for file names such as `foo'. |
| 428 | 2516 |
| 2517 If PERIOD is non-nil, then the returned value includes the period | |
| 2518 that delimits the extension, and if FILENAME has no extension, | |
| 2519 the value is \"\"." | |
| 2520 (save-match-data | |
| 2521 (let ((file (file-name-sans-versions (file-name-nondirectory filename)))) | |
| 2522 (if (string-match "\\.[^.]*\\'" file) | |
| 2523 (substring file (+ (match-beginning 0) (if period 0 1))) | |
| 2524 (if period | |
| 2525 ""))))) | |
| 2526 | |
| 1333 | 2527 (defcustom make-backup-file-name-function nil |
| 2528 "A function to use instead of the default `make-backup-file-name'. | |
| 2529 A value of nil gives the default `make-backup-file-name' behaviour. | |
| 2530 | |
| 2531 This could be buffer-local to do something special for specific | |
| 2532 files. If you define it, you may need to change `backup-file-name-p' | |
| 2533 and `file-name-sans-versions' too. | |
| 2534 | |
| 2535 See also `backup-directory-alist'." | |
| 2536 :group 'backup | |
| 2537 :type '(choice (const :tag "Default" nil) | |
| 2538 (function :tag "Your function"))) | |
| 2539 | |
| 2540 (defcustom backup-directory-alist nil | |
| 2541 "Alist of filename patterns and backup directory names. | |
| 2542 Each element looks like (REGEXP . DIRECTORY). Backups of files with | |
| 2543 names matching REGEXP will be made in DIRECTORY. DIRECTORY may be | |
| 2544 relative or absolute. If it is absolute, so that all matching files | |
| 2545 are backed up into the same directory, the file names in this | |
| 2546 directory will be the full name of the file backed up with all | |
| 2547 directory separators changed to `!' to prevent clashes. This will not | |
| 2548 work correctly if your filesystem truncates the resulting name. | |
| 2549 | |
| 2550 For the common case of all backups going into one directory, the alist | |
| 2551 should contain a single element pairing \".\" with the appropriate | |
| 2552 directory name. | |
| 2553 | |
| 2554 If this variable is nil, or it fails to match a filename, the backup | |
| 2555 is made in the original file's directory. | |
| 2556 | |
| 2557 On MS-DOS filesystems without long names this variable is always | |
| 2558 ignored." | |
| 2559 :group 'backup | |
| 2560 :type '(repeat (cons (regexp :tag "Regexp matching filename") | |
| 2561 (directory :tag "Backup directory name")))) | |
| 2562 | |
| 428 | 2563 (defun make-backup-file-name (file) |
| 2564 "Create the non-numeric backup file name for FILE. | |
| 1333 | 2565 Normally this will just be the file's name with `~' appended. |
| 2566 Customization hooks are provided as follows. | |
| 2567 | |
| 2568 If the variable `make-backup-file-name-function' is non-nil, its value | |
| 2569 should be a function which will be called with FILE as its argument; | |
| 2570 the resulting name is used. | |
| 2571 | |
| 2572 Otherwise a match for FILE is sought in `backup-directory-alist'; see | |
| 2573 the documentation of that variable. If the directory for the backup | |
| 2574 doesn't exist, it is created." | |
| 2575 (if make-backup-file-name-function | |
| 2576 (funcall make-backup-file-name-function file) | |
| 2577 ; (if (and (eq system-type 'ms-dos) | |
| 2578 ; (not (msdos-long-file-names))) | |
| 2579 ; (let ((fn (file-name-nondirectory file))) | |
| 2580 ; (concat (file-name-directory file) | |
| 2581 ; (or (and (string-match "\\`[^.]+\\'" fn) | |
| 2582 ; (concat (match-string 0 fn) ".~")) | |
| 2583 ; (and (string-match "\\`[^.]+\\.\\(..?\\)?" fn) | |
| 2584 ; (concat (match-string 0 fn) "~"))))) | |
| 2585 (concat (make-backup-file-name-1 file) "~"))) | |
| 2586 | |
| 2587 (defun make-backup-file-name-1 (file) | |
| 2588 "Subroutine of `make-backup-file-name' and `find-backup-file-name'." | |
| 2589 (let ((alist backup-directory-alist) | |
| 2590 elt backup-directory dir-sep-string) | |
| 2591 (while alist | |
| 2592 (setq elt (pop alist)) | |
| 2593 (if (string-match (car elt) file) | |
| 2594 (setq backup-directory (cdr elt) | |
| 2595 alist nil))) | |
| 2596 (if (null backup-directory) | |
| 2597 file | |
| 2598 (unless (file-exists-p backup-directory) | |
| 2599 (condition-case nil | |
| 2600 (make-directory backup-directory 'parents) | |
| 2601 (file-error file))) | |
| 2602 (if (file-name-absolute-p backup-directory) | |
| 2603 (progn | |
| 2604 (when (memq system-type '(windows-nt ms-dos)) | |
| 2605 ;; Normalize DOSish file names: convert all slashes to | |
| 2606 ;; directory-sep-char, downcase the drive letter, if any, | |
| 2607 ;; and replace the leading "x:" with "/drive_x". | |
| 2608 (or (file-name-absolute-p file) | |
| 2609 (setq file (expand-file-name file))) ; make defaults explicit | |
| 2610 ;; Replace any invalid file-name characters (for the | |
| 2611 ;; case of backing up remote files). | |
| 2612 (setq file (expand-file-name (convert-standard-filename file))) | |
| 2613 (setq dir-sep-string (char-to-string directory-sep-char)) | |
| 2614 (if (eq (aref file 1) ?:) | |
| 2615 (setq file (concat dir-sep-string | |
| 2616 "drive_" | |
| 2617 (char-to-string (downcase (aref file 0))) | |
| 2618 (if (eq (aref file 2) directory-sep-char) | |
| 2619 "" | |
| 2620 dir-sep-string) | |
| 2621 (substring file 2))))) | |
| 2622 ;; Make the name unique by substituting directory | |
| 2623 ;; separators. It may not really be worth bothering about | |
| 2624 ;; doubling `!'s in the original name... | |
| 2625 (expand-file-name | |
| 2626 (subst-char-in-string | |
| 2627 directory-sep-char ?! | |
| 2628 (replace-regexp-in-string "!" "!!" file)) | |
| 2629 backup-directory)) | |
| 2630 (expand-file-name (file-name-nondirectory file) | |
| 2631 (file-name-as-directory | |
| 2632 (expand-file-name backup-directory | |
| 2633 (file-name-directory file)))))))) | |
| 428 | 2634 |
| 2635 (defun backup-file-name-p (file) | |
| 2636 "Return non-nil if FILE is a backup file name (numeric or not). | |
| 2637 This is a separate function so you can redefine it for customization. | |
| 2638 You may need to redefine `file-name-sans-versions' as well." | |
| 440 | 2639 (string-match "~\\'" file)) |
| 428 | 2640 |
| 1333 | 2641 (defvar backup-extract-version-start) |
| 2642 | |
| 428 | 2643 ;; This is used in various files. |
| 1333 | 2644 ;; The usage of backup-extract-version-start is not very clean, |
| 2645 ;; but I can't see a good alternative, so as of now I am leaving it alone. | |
| 428 | 2646 (defun backup-extract-version (fn) |
| 1333 | 2647 "Given the name of a numeric backup file, FN, return the backup number. |
| 2648 Uses the free variable `backup-extract-version-start', whose value should be | |
| 428 | 2649 the index in the name where the version number begins." |
| 1333 | 2650 (if (and (string-match "[0-9]+~$" fn backup-extract-version-start) |
| 2651 (= (match-beginning 0) backup-extract-version-start)) | |
| 2652 (string-to-int (substring fn backup-extract-version-start -1)) | |
| 428 | 2653 0)) |
| 2654 | |
| 1333 | 2655 ;; [[ FSF 21.2 says: |
| 2656 ;; I believe there is no need to alter this behavior for VMS; | |
| 2657 ;; since backup files are not made on VMS, it should not get called. ]] | |
| 428 | 2658 (defun find-backup-file-name (fn) |
| 1333 | 2659 "Find a file name for a backup file FN, and suggestions for deletions. |
| 428 | 2660 Value is a list whose car is the name for the backup file |
| 1333 | 2661 and whose cdr is a list of old versions to consider deleting now. |
| 2662 If the value is nil, don't make a backup. | |
| 2663 Uses `backup-directory-alist' in the same way as does | |
| 2664 `make-backup-file-name'." | |
| 428 | 2665 (let ((handler (find-file-name-handler fn 'find-backup-file-name))) |
| 2666 ;; Run a handler for this function so that ange-ftp can refuse to do it. | |
| 2667 (if handler | |
| 2668 (funcall handler 'find-backup-file-name fn) | |
| 1333 | 2669 (if (or (eq version-control 'never) |
| 2670 ;; We don't support numbered backups on plain MS-DOS | |
| 2671 ;; when long file names are unavailable. | |
| 2672 ; (and (eq system-type 'ms-dos) | |
| 2673 ; (not (msdos-long-file-names))) | |
| 2674 ) | |
| 428 | 2675 (list (make-backup-file-name fn)) |
| 1333 | 2676 (let* ((basic-name (make-backup-file-name-1 fn)) |
| 2677 (base-versions (concat (file-name-nondirectory basic-name) | |
| 2678 ".~")) | |
| 2679 (backup-extract-version-start (length base-versions)) | |
| 428 | 2680 (high-water-mark 0) |
| 1333 | 2681 (number-to-delete 0) |
| 2682 possibilities deserve-versions-p versions) | |
| 428 | 2683 (condition-case () |
| 2684 (setq possibilities (file-name-all-completions | |
| 2685 base-versions | |
| 1333 | 2686 (file-name-directory basic-name)) |
| 2687 versions (sort (mapcar #'backup-extract-version | |
| 2688 possibilities) | |
| 2689 #'<) | |
| 2690 high-water-mark (apply 'max 0 versions) | |
| 428 | 2691 deserve-versions-p (or version-control |
| 2692 (> high-water-mark 0)) | |
| 2693 number-to-delete (- (length versions) | |
| 1333 | 2694 kept-old-versions |
| 2695 kept-new-versions | |
| 2696 -1)) | |
| 2697 (file-error (setq possibilities nil))) | |
| 428 | 2698 (if (not deserve-versions-p) |
| 2699 (list (make-backup-file-name fn)) | |
| 1333 | 2700 (cons (format "%s.~%d~" basic-name (1+ high-water-mark)) |
| 428 | 2701 (if (and (> number-to-delete 0) |
| 2702 ;; Delete nothing if there is overflow | |
| 2703 ;; in the number of versions to keep. | |
| 2704 (>= (+ kept-new-versions kept-old-versions -1) 0)) | |
| 1333 | 2705 (mapcar (lambda (n) |
| 2706 (format "%s.~%d~" basic-name n)) | |
| 428 | 2707 (let ((v (nthcdr kept-old-versions versions))) |
| 2708 (rplacd (nthcdr (1- number-to-delete) v) ()) | |
| 2709 v)))))))))) | |
| 2710 | |
| 2711 (defun file-nlinks (filename) | |
| 2712 "Return number of names file FILENAME has." | |
| 2713 (car (cdr (file-attributes filename)))) | |
| 2714 | |
| 2715 (defun file-relative-name (filename &optional directory) | |
| 1333 | 2716 "Convert FILENAME to be relative to DIRECTORY (default: `default-directory'). |
| 428 | 2717 This function returns a relative file name which is equivalent to FILENAME |
| 2718 when used with that default directory as the default. | |
| 442 | 2719 If this is impossible (which can happen on MS Windows when the file name |
| 2720 and directory use different drive names) then it returns FILENAME." | |
| 428 | 2721 (save-match-data |
| 2722 (let ((fname (expand-file-name filename))) | |
| 2723 (setq directory (file-name-as-directory | |
| 2724 (expand-file-name (or directory default-directory)))) | |
| 2725 ;; On Microsoft OSes, if FILENAME and DIRECTORY have different | |
| 2726 ;; drive names, they can't be relative, so return the absolute name. | |
| 440 | 2727 (if (and (eq system-type 'windows-nt) |
| 428 | 2728 (not (string-equal (substring fname 0 2) |
| 2729 (substring directory 0 2)))) | |
| 2730 filename | |
| 2731 (let ((ancestor ".") | |
| 2732 (fname-dir (file-name-as-directory fname))) | |
| 2733 (while (and (not (string-match (concat "^" (regexp-quote directory)) | |
| 2734 fname-dir)) | |
| 2735 (not (string-match (concat "^" (regexp-quote directory)) fname))) | |
| 2736 (setq directory (file-name-directory (substring directory 0 -1)) | |
| 2737 ancestor (if (equal ancestor ".") | |
| 2738 ".." | |
| 2739 (concat "../" ancestor)))) | |
| 2740 ;; Now ancestor is empty, or .., or ../.., etc. | |
| 2741 (if (string-match (concat "^" (regexp-quote directory)) fname) | |
| 2742 ;; We matched within FNAME's directory part. | |
| 2743 ;; Add the rest of FNAME onto ANCESTOR. | |
| 2744 (let ((rest (substring fname (match-end 0)))) | |
| 2745 (if (and (equal ancestor ".") | |
| 2746 (not (equal rest ""))) | |
| 2747 ;; But don't bother with ANCESTOR if it would give us `./'. | |
| 2748 rest | |
| 2749 (concat (file-name-as-directory ancestor) rest))) | |
| 2750 ;; We matched FNAME's directory equivalent. | |
| 2751 ancestor)))))) | |
| 2752 | |
| 2753 (defun save-buffer (&optional args) | |
| 2754 "Save current buffer in visited file if modified. Versions described below. | |
| 2755 By default, makes the previous version into a backup file | |
| 2756 if previously requested or if this is the first save. | |
| 1333 | 2757 With 1 \\[universal-argument], marks this version |
| 428 | 2758 to become a backup when the next save is done. |
| 1333 | 2759 With 2 \\[universal-argument]'s, |
| 428 | 2760 unconditionally makes the previous version into a backup file. |
| 1333 | 2761 With 3 \\[universal-argument]'s, marks this version |
| 2762 to become a backup when the next save is done, | |
| 2763 and unconditionally makes the previous version into a backup file. | |
| 2764 | |
| 2765 With argument of 0, never make the previous version into a backup file. | |
| 428 | 2766 |
| 2767 If a file's name is FOO, the names of its numbered backup versions are | |
| 2768 FOO.~i~ for various integers i. A non-numbered backup file is called FOO~. | |
| 2769 Numeric backups (rather than FOO~) will be made if value of | |
| 2770 `version-control' is not the atom `never' and either there are already | |
| 2771 numeric versions of the file being backed up, or `version-control' is | |
| 2772 non-nil. | |
| 2773 We don't want excessive versions piling up, so there are variables | |
| 1333 | 2774 `kept-old-versions', which tells Emacs how many oldest versions to keep, |
| 428 | 2775 and `kept-new-versions', which tells how many newest versions to keep. |
| 2776 Defaults are 2 old versions and 2 new. | |
| 2777 `dired-kept-versions' controls dired's clean-directory (.) command. | |
| 2778 If `delete-old-versions' is nil, system will query user | |
| 1333 | 2779 before trimming versions. Otherwise it does it silently. |
| 2780 | |
| 2781 If `vc-make-backup-files' is nil, which is the default, | |
| 2782 no backup files are made for files managed by version control. | |
| 2783 (This is because the version control system itself records previous versions.) | |
| 2784 | |
| 2785 See the subroutine `basic-save-buffer' for more information." | |
| 428 | 2786 (interactive "_p") |
| 2787 (let ((modp (buffer-modified-p)) | |
| 2788 (large (> (buffer-size) 50000)) | |
| 2789 (make-backup-files (or (and make-backup-files (not (eq args 0))) | |
| 2790 (memq args '(16 64))))) | |
| 2791 (and modp (memq args '(16 64)) (setq buffer-backed-up nil)) | |
| 1333 | 2792 (if (and modp large (buffer-file-name)) |
| 2793 (display-message 'progress (format "Saving file %s..." | |
| 2794 (buffer-file-name)))) | |
| 428 | 2795 (basic-save-buffer) |
| 2796 (and modp (memq args '(4 64)) (setq buffer-backed-up nil)))) | |
| 2797 | |
| 2798 (defun delete-auto-save-file-if-necessary (&optional force) | |
| 2799 "Delete auto-save file for current buffer if `delete-auto-save-files' is t. | |
| 1333 | 2800 Normally delete only if the file was written by this XEmacs since |
| 2801 the last real save, but optional arg FORCE non-nil means delete anyway." | |
| 428 | 2802 (and buffer-auto-save-file-name delete-auto-save-files |
| 2803 (not (string= buffer-file-name buffer-auto-save-file-name)) | |
| 2804 (or force (recent-auto-save-p)) | |
| 2805 (progn | |
| 2806 (ignore-file-errors (delete-file buffer-auto-save-file-name)) | |
| 2807 (set-buffer-auto-saved)))) | |
| 2808 | |
| 2809 ;; XEmacs change (from Sun) | |
| 2810 ;; used to communicate with continue-save-buffer: | |
| 2811 (defvar continue-save-buffer-hooks-tail nil) | |
| 2812 | |
| 2813 ;; Not in FSFmacs | |
| 2814 (defun basic-write-file-data (realname truename) | |
| 2815 ;; call the hooks until the bytes are put | |
| 2816 ;; call write-region as a last resort | |
| 2817 (let ((region-written nil) | |
| 2818 (hooks write-file-data-hooks)) | |
| 2819 (while (and hooks (not region-written)) | |
| 2820 (setq region-written (funcall (car hooks) realname) | |
| 2821 hooks (cdr hooks))) | |
| 2822 (if (not region-written) | |
| 2823 (write-region (point-min) (point-max) realname nil t truename)))) | |
| 2824 | |
| 1333 | 2825 ; (defvar auto-save-hook nil |
| 2826 ; "Normal hook run just before auto-saving.") | |
| 2827 | |
| 428 | 2828 (put 'after-save-hook 'permanent-local t) |
| 2829 (defvar after-save-hook nil | |
| 2830 "Normal hook that is run after a buffer is saved to its file. | |
| 2831 These hooks are considered to pertain to the visited file. | |
| 2832 So this list is cleared if you change the visited file name.") | |
| 2833 | |
| 1333 | 2834 (defvar save-buffer-coding-system nil |
| 2835 "If non-nil, use this coding system for saving the buffer. | |
| 2836 More precisely, use this coding system in place of the | |
| 2837 value of `buffer-file-coding-system', when saving the buffer. | |
| 2838 Calling `write-region' for any purpose other than saving the buffer | |
| 2839 will still use `buffer-file-coding-system'; this variable has no effect | |
| 2840 in such cases.") | |
| 2841 | |
| 2842 (make-variable-buffer-local 'save-buffer-coding-system) | |
| 2843 (put 'save-buffer-coding-system 'permanent-local t) | |
| 2844 | |
| 428 | 2845 (defun files-fetch-hook-value (hook) |
| 4156 | 2846 (let ((localval (copy-list (symbol-value hook))) |
| 2847 (globalval (copy-list (default-value hook)))) | |
| 428 | 2848 (if (memq t localval) |
| 2849 (setq localval (append (delq t localval) (delq t globalval)))) | |
| 2850 localval)) | |
| 2851 | |
| 2852 (defun basic-save-buffer () | |
| 2853 "Save the current buffer in its visited file, if it has been modified. | |
| 1333 | 2854 The hooks `write-contents-hooks', `local-write-file-hooks' and |
| 2855 `write-file-hooks' get a chance to do the job of saving; if they do not, | |
| 2116 | 2856 then the buffer is saved in the visited file in the usual way. |
| 1333 | 2857 After saving the buffer, this function runs `after-save-hook'." |
| 428 | 2858 (interactive) |
| 1333 | 2859 (save-current-buffer |
| 428 | 2860 ;; In an indirect buffer, save its base buffer instead. |
| 2861 (if (buffer-base-buffer) | |
| 2862 (set-buffer (buffer-base-buffer))) | |
| 2863 (if (buffer-modified-p) | |
| 2864 (let ((recent-save (recent-auto-save-p))) | |
| 2865 ;; If buffer has no file name, ask user for one. | |
| 2866 (or buffer-file-name | |
| 2867 (let ((filename | |
| 2868 (expand-file-name | |
| 2869 (read-file-name "File to save in: ") nil))) | |
| 2870 (and (file-exists-p filename) | |
| 2871 (or (y-or-n-p (format "File `%s' exists; overwrite? " | |
| 2872 filename)) | |
| 2873 (error "Canceled"))) | |
| 2874 (set-visited-file-name filename))) | |
| 2875 (or (verify-visited-file-modtime (current-buffer)) | |
| 2876 (not (file-exists-p buffer-file-name)) | |
| 2877 (yes-or-no-p | |
| 2878 (format "%s has changed since visited or saved. Save anyway? " | |
| 2879 (file-name-nondirectory buffer-file-name))) | |
| 2880 (error "Save not confirmed")) | |
| 2881 (save-restriction | |
| 2882 (widen) | |
| 1333 | 2883 (save-excursion |
| 2884 (and (> (point-max) 1) | |
| 2885 (not find-file-literally) | |
| 2886 (not (eq (char-after (1- (point-max))) ?\n)) | |
| 2887 (not (and (eq selective-display t) | |
| 2888 (eq (char-after (1- (point-max))) ?\r))) | |
| 2889 (or (eq require-final-newline t) | |
| 2890 (and require-final-newline | |
| 2891 (y-or-n-p | |
| 2892 (format "Buffer %s does not end in newline. Add one? " | |
| 2893 (buffer-name))))) | |
| 2894 (save-excursion | |
| 2895 (goto-char (point-max)) | |
| 2896 (insert ?\n)))) | |
| 2897 | |
| 2898 ;; Support VC version backups. | |
| 2899 (if-fboundp 'vc-before-save | |
| 2900 (vc-before-save)) | |
| 434 | 2901 |
| 444 | 2902 ;; Run the write-file-hooks until one returns non-nil. |
| 428 | 2903 ;; Bind after-save-hook to nil while running the |
| 2904 ;; write-file-hooks so that if this function is called | |
| 2905 ;; recursively (from inside a write-file-hook) the | |
| 2906 ;; after-hooks will only get run once (from the | |
| 2907 ;; outermost call). | |
| 2908 ;; | |
| 2909 ;; Ugh, have to duplicate logic of run-hook-with-args-until-success | |
| 2910 (let ((hooks (append (files-fetch-hook-value 'write-contents-hooks) | |
| 2911 (files-fetch-hook-value | |
| 2912 'local-write-file-hooks) | |
| 2913 (files-fetch-hook-value 'write-file-hooks))) | |
| 2914 (after-save-hook nil) | |
| 2915 (local-write-file-hooks nil) | |
| 2916 (write-contents-hooks nil) | |
| 2917 (write-file-hooks nil) | |
| 2918 done) | |
| 2919 (while (and hooks | |
| 2920 (let ((continue-save-buffer-hooks-tail hooks)) | |
| 2921 (not (setq done (funcall (car hooks)))))) | |
| 2922 (setq hooks (cdr hooks))) | |
| 2923 ;; If a hook returned t, file is already "written". | |
| 2924 ;; Otherwise, write it the usual way now. | |
| 2925 (if (not done) | |
| 2926 (basic-save-buffer-1))) | |
| 2927 ;; XEmacs: next two clauses (buffer-file-number setting and | |
| 1333 | 2928 ;; set-file-modes) moved into basic-save-buffer-1 for use by |
| 2929 ;; continue-save-buffer. | |
| 428 | 2930 ) |
| 2931 ;; If the auto-save file was recent before this command, | |
| 2932 ;; delete it now. | |
| 2933 (delete-auto-save-file-if-necessary recent-save) | |
| 2934 ;; Support VC `implicit' locking. | |
| 502 | 2935 (if-fboundp 'vc-after-save |
| 2936 (vc-after-save)) | |
| 428 | 2937 (run-hooks 'after-save-hook)) |
| 2938 (display-message 'no-log "(No changes need to be saved)")))) | |
| 2939 | |
| 2940 ;; This does the "real job" of writing a buffer into its visited file | |
| 2941 ;; and making a backup file. This is what is normally done | |
| 2942 ;; but inhibited if one of write-file-hooks returns non-nil. | |
| 2943 ;; It returns a value to store in setmodes. | |
| 2944 (defun basic-save-buffer-1 () | |
| 1333 | 2945 (if save-buffer-coding-system |
| 2946 (let ((coding-system-for-write save-buffer-coding-system)) | |
| 2947 (basic-save-buffer-2)) | |
| 2948 (basic-save-buffer-2))) | |
| 2949 | |
| 2950 (defun basic-save-buffer-2 () | |
| 428 | 2951 (let (setmodes tempsetmodes) |
| 2952 (if (not (file-writable-p buffer-file-name)) | |
| 2953 (let ((dir (file-name-directory buffer-file-name))) | |
| 2954 (if (not (file-directory-p dir)) | |
| 1333 | 2955 (if (file-exists-p dir) |
| 2956 (error "%s is not a directory" dir) | |
| 2957 (error "%s: no such directory" buffer-file-name)) | |
| 428 | 2958 (if (not (file-exists-p buffer-file-name)) |
| 2959 (error "Directory %s write-protected" dir) | |
| 2960 (if (yes-or-no-p | |
| 2961 (format "File %s is write-protected; try to save anyway? " | |
| 2962 (file-name-nondirectory | |
| 2963 buffer-file-name))) | |
| 2964 (setq tempsetmodes t) | |
| 2965 (error | |
| 2966 "Attempt to save to a file which you aren't allowed to write")))))) | |
| 2967 (or buffer-backed-up | |
| 2968 (setq setmodes (backup-buffer))) | |
| 2969 (let ((dir (file-name-directory buffer-file-name))) | |
| 2970 (if (and file-precious-flag | |
| 2971 (file-writable-p dir)) | |
| 2972 ;; If file is precious, write temp name, then rename it. | |
| 2973 ;; This requires write access to the containing dir, | |
| 2974 ;; which is why we don't try it if we don't have that access. | |
| 2975 (let ((realname buffer-file-name) | |
| 2976 tempname nogood i succeed | |
| 2977 (old-modtime (visited-file-modtime))) | |
| 2978 (setq i 0) | |
| 2979 (setq nogood t) | |
| 2980 ;; Find the temporary name to write under. | |
| 2981 (while nogood | |
| 2982 (setq tempname (format "%s#tmp#%d" dir i)) | |
| 2983 (setq nogood (file-exists-p tempname)) | |
| 2984 (setq i (1+ i))) | |
| 2985 (unwind-protect | |
| 2986 (progn (clear-visited-file-modtime) | |
| 2987 (write-region (point-min) (point-max) | |
| 2988 tempname nil realname | |
| 2989 buffer-file-truename) | |
| 2990 (setq succeed t)) | |
| 2991 ;; If writing the temp file fails, | |
| 2992 ;; delete the temp file. | |
| 2993 (or succeed | |
| 2994 (progn | |
| 1333 | 2995 (ignore-file-errors |
| 2996 (delete-file tempname)) | |
| 428 | 2997 (set-visited-file-modtime old-modtime)))) |
| 2998 ;; Since we have created an entirely new file | |
| 2999 ;; and renamed it, make sure it gets the | |
| 3000 ;; right permission bits set. | |
| 3001 (setq setmodes (file-modes buffer-file-name)) | |
| 3002 ;; We succeeded in writing the temp file, | |
| 3003 ;; so rename it. | |
| 3004 (rename-file tempname buffer-file-name t)) | |
| 3005 ;; If file not writable, see if we can make it writable | |
| 3006 ;; temporarily while we write it. | |
| 3007 ;; But no need to do so if we have just backed it up | |
| 3008 ;; (setmodes is set) because that says we're superseding. | |
| 3009 (cond ((and tempsetmodes (not setmodes)) | |
| 3010 ;; Change the mode back, after writing. | |
| 3011 (setq setmodes (file-modes buffer-file-name)) | |
| 1333 | 3012 (set-file-modes buffer-file-name (logior setmodes 128)))) |
| 428 | 3013 (basic-write-file-data buffer-file-name buffer-file-truename))) |
| 1333 | 3014 ;; #### FSF 21.2. We don't have last-coding-system-used. |
| 3015 ; ;; Now we have saved the current buffer. Let's make sure | |
| 3016 ; ;; that buffer-file-coding-system is fixed to what | |
| 3017 ; ;; actually used for saving by binding it locally. | |
| 3018 ; (if save-buffer-coding-system | |
| 3019 ; (setq save-buffer-coding-system last-coding-system-used) | |
| 3020 ; (setq buffer-file-coding-system last-coding-system-used)) | |
| 428 | 3021 (setq buffer-file-number |
| 3022 (if buffer-file-name | |
| 3023 (nth 10 (file-attributes buffer-file-name)) | |
| 3024 nil)) | |
| 3025 (if setmodes | |
| 3026 (condition-case () | |
| 3027 (set-file-modes buffer-file-name setmodes) | |
| 3028 (error nil))))) | |
| 3029 | |
| 3030 ;; XEmacs change, from Sun | |
| 3031 (defun continue-save-buffer () | |
| 3032 "Provide a clean way for a write-file-hook to wrap AROUND | |
| 3033 the execution of the remaining hooks and writing to disk. | |
| 3034 Do not call this function except from a functions | |
| 444 | 3035 on the `write-file-hooks' or `write-contents-hooks' list. |
| 428 | 3036 A hook that calls this function must return non-nil, |
| 444 | 3037 to signal completion to its caller. `continue-save-buffer' |
| 428 | 3038 always returns non-nil." |
| 3039 (let ((hooks (cdr (or continue-save-buffer-hooks-tail | |
| 3040 (error | |
| 3041 "continue-save-buffer called outside a write-file-hook!")))) | |
| 3042 (done nil)) | |
| 3043 ;; Do something like this: | |
| 3044 ;; (let ((write-file-hooks hooks)) (basic-save-buffer)) | |
| 3045 ;; First run the rest of the hooks. | |
| 3046 (while (and hooks | |
| 3047 (let ((continue-save-buffer-hooks-tail hooks)) | |
| 3048 (not (setq done (funcall (car hooks)))))) | |
| 3049 (setq hooks (cdr hooks))) | |
| 3050 ;; | |
| 3051 ;; If a hook returned t, file is already "written". | |
| 3052 (if (not done) | |
| 3053 (basic-save-buffer-1)) | |
| 3054 'continue-save-buffer)) | |
| 3055 | |
|
5245
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|
3056 (defun diff-buffer-with-file (&optional buffer) |
|
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|
3057 "View the differences between BUFFER and its associated file. |
|
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|
3058 This requires the external program `diff' to be in your `exec-path'." |
|
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|
3059 (interactive "bBuffer: ") |
|
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3060 (with-current-buffer (get-buffer (or buffer (current-buffer))) |
|
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|
3061 (if (and buffer-file-name |
|
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|
3062 (file-exists-p buffer-file-name)) |
|
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|
3063 (let ((tempfile (make-temp-file "buffer-content-"))) |
|
0d71bcf96ffd
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|
3064 (unwind-protect |
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|
3065 (save-restriction |
|
0d71bcf96ffd
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|
3066 (widen) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3067 (write-region (point-min) (point-max) tempfile nil 'nomessage) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3068 (diff-files-for-recover "File" |
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Add ` diff-buffer-with-file'.
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|
3069 buffer-file-name tempfile buffer-file-name tempfile |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3070 buffer-file-coding-system) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3071 (sit-for 0)) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3072 (when (file-exists-p tempfile) |
|
0d71bcf96ffd
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|
3073 (delete-file tempfile)))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3074 (message "Buffer %s has no associated file on disc" (buffer-name)) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3075 ;; Display that message for 1 second so that user can read it |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3076 ;; in the minibuffer. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3077 (sit-for 1))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3078 ;; return always nil, so that save-buffers-kill-emacs will not move |
|
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|
3079 ;; over to the next unsaved buffer when calling `d'. |
|
0d71bcf96ffd
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|
3080 nil) |
|
0d71bcf96ffd
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|
3081 |
|
5249
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|
3082 (defvar save-some-buffers-action-alist |
|
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3083 ;;instead of this we just say "yes all", "no all", etc. |
|
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|
3084 ;;"save all the rest" |
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3085 ;;"save only this buffer" "save no more buffers") |
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|
3086 ;; this is rather bogus. --ben |
|
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3087 ;; (it makes the dialog box too big, and you get an error |
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3088 ;; "wrong type argument: framep, nil" when you hit q after |
|
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3089 ;; choosing the option from the dialog box) |
|
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3090 |
|
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3091 ;; We should fix the dialog box rather than disabling |
|
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|
3092 ;; this! --hniksic |
|
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3093 (list (list ?\C-r (lambda (buf) |
|
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3094 ;; #### FSF has an EXIT-ACTION argument |
|
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3095 ;; to `view-buffer'. |
|
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3096 (view-buffer buf |
|
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|
3097 ; (function |
|
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3098 ; (lambda (ignore) |
|
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3099 ; (exit-recursive-edit)))) |
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|
3100 ) |
|
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|
3101 (with-boundp 'view-exit-action |
|
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|
3102 (setq view-exit-action |
|
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|
3103 (lambda (ignore) |
|
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|
3104 (exit-recursive-edit)))) |
|
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|
3105 (recursive-edit) |
|
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|
3106 ;; Return nil to ask about BUF again. |
|
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|
3107 nil) |
|
d4fae3ebf26a
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|
3108 "%_Display Buffer") |
|
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|
3109 (list ?d (lambda (buf) |
|
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|
3110 (save-window-excursion (diff-buffer-with-file buf)) |
|
d4fae3ebf26a
Add `save-some-buffers-action-alist'.
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|
3111 (view-buffer (get-buffer-create "*File Diff*") t) |
|
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|
3112 (with-boundp 'view-exit-action |
|
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|
3113 (setq view-exit-action |
|
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|
3114 (lambda (ignore) |
|
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Add `save-some-buffers-action-alist'.
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|
3115 (exit-recursive-edit)))) |
|
d4fae3ebf26a
Add `save-some-buffers-action-alist'.
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|
3116 (recursive-edit) |
|
d4fae3ebf26a
Add `save-some-buffers-action-alist'.
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|
3117 ;; Return nil to ask about BUF again. |
|
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Add `save-some-buffers-action-alist'.
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|
3118 nil) |
|
d4fae3ebf26a
Add `save-some-buffers-action-alist'.
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|
3119 "View %_Changes in Buffer"))) |
|
d4fae3ebf26a
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|
3120 |
|
5245
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3121 (defun diff-files-for-recover (purpose file-1 file-2 |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3122 failed-file-1 failed-file-2 |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3123 coding-system) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3124 "Diff two files for recovering or comparing against the last saved version. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
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|
3125 PURPOSE is an informational string used for naming the resulting buffer. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3126 FILE-1 and FILE-2 are the two files to compare. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3127 FAILED-FILE-1 and FAILED-FILE-2 are the names of files for which we should |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3128 generate directory listings on failure. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
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diff
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|
3129 CODING-SYSTEM is the coding system of the resulting buffer." |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3130 (with-output-to-temp-buffer (concat "*" purpose " Diff*") |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
3131 (buffer-disable-undo standard-output) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
3132 (let ((coding-system-for-read coding-system)) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
3133 (condition-case ferr |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
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|
3134 (progn |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3135 (apply #'call-process |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
3136 recover-file-diff-program |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
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diff
changeset
|
3137 nil standard-output nil |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
changeset
|
3138 (append |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3139 recover-file-diff-arguments |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3140 (list file-1 file-2))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
changeset
|
3141 (if (fboundp 'diff-mode) |
|
0d71bcf96ffd
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diff
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|
3142 (save-excursion |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3143 (set-buffer standard-output) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
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|
3144 (declare-fboundp (diff-mode))))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3145 (io-error |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3146 (save-excursion |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
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|
3147 (let ((switches |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
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|
3148 (declare-boundp |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
changeset
|
3149 dired-listing-switches))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3150 (if (file-symlink-p failed-file-2) |
|
0d71bcf96ffd
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diff
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|
3151 (setq switches (concat switches "L"))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3152 (set-buffer standard-output) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
changeset
|
3153 ;; XEmacs had the following line, not in FSF. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
changeset
|
3154 (setq default-directory (file-name-directory failed-file-2)) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
changeset
|
3155 ;; Use insert-directory-safely, |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3156 ;; not insert-directory, because |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3157 ;; these files might not exist. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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diff
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|
3158 ;; In particular, FAILED-FILE-2 might not |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3159 ;; exist if the auto-save file |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3160 ;; was for a buffer that didn't |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3161 ;; visit a file, such as |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3162 ;; "*mail*". The code in v20.x |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3163 ;; called `ls' directly, so we |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3164 ;; need to emulate what `ls' did |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3165 ;; in that case. |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3166 (insert-directory-safely failed-file-1 switches) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3167 (insert-directory-safely failed-file-2 switches)) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3168 (terpri) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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parents:
5211
diff
changeset
|
3169 (princ "Error during diff: ") |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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5211
diff
changeset
|
3170 (display-error ferr standard-output))))))) |
|
0d71bcf96ffd
Add ` diff-buffer-with-file'.
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|
3171 |
| 428 | 3172 (defcustom save-some-buffers-query-display-buffer t |
| 3173 "*Non-nil makes `\\[save-some-buffers]' switch to the buffer offered for saving." | |
| 3174 :type 'boolean | |
| 3175 :group 'editing-basics) | |
| 3176 | |
| 1333 | 3177 (defun save-some-buffers (&optional arg pred) |
| 428 | 3178 "Save some modified file-visiting buffers. Asks user about each one. |
| 3179 Optional argument (the prefix) non-nil means save all with no questions. | |
| 1333 | 3180 Optional second argument PRED determines which buffers are considered: |
| 3181 If PRED is nil, all the file-visiting buffers are considered. | |
| 3182 If PRED is t, then certain non-file buffers will also be considered. | |
| 3183 If PRED is a zero-argument function, it indicates for each buffer whether | |
| 3184 to consider it or not when called with that buffer current." | |
| 428 | 3185 (interactive "P") |
| 3186 (save-excursion | |
| 3187 ;; `delete-other-windows' can bomb during autoloads generation, so | |
| 3188 ;; guard it well. | |
| 3189 (if (or noninteractive | |
| 3190 (eq (selected-window) (minibuffer-window)) | |
| 3191 (not save-some-buffers-query-display-buffer)) | |
| 3192 ;; If playing with windows is unsafe or undesired, just do the | |
| 3193 ;; usual drill. | |
| 1333 | 3194 (save-some-buffers-1 arg pred nil) |
| 428 | 3195 ;; Else, protect the windows. |
| 3196 (when (save-window-excursion | |
| 1333 | 3197 (save-some-buffers-1 arg pred t)) |
| 428 | 3198 ;; Force redisplay. |
| 3199 (sit-for 0))))) | |
| 3200 | |
| 3201 ;; XEmacs - do not use queried flag | |
| 1333 | 3202 (defun save-some-buffers-1 (arg pred switch-buffer) |
| 428 | 3203 (let* ((switched nil) |
| 612 | 3204 (last-buffer nil) |
| 428 | 3205 (files-done |
| 3206 (map-y-or-n-p | |
| 3207 (lambda (buffer) | |
| 612 | 3208 (prog1 |
| 3209 (and (buffer-modified-p buffer) | |
| 3210 (not (buffer-base-buffer buffer)) | |
| 3211 ;; XEmacs addition: | |
| 3212 (not (symbol-value-in-buffer 'save-buffers-skip buffer)) | |
| 3213 (or | |
| 3214 (buffer-file-name buffer) | |
| 1333 | 3215 (and pred |
| 612 | 3216 (progn |
| 3217 (set-buffer buffer) | |
| 3218 (and buffer-offer-save (> (buffer-size) 0))))) | |
| 1333 | 3219 (or (not (functionp pred)) |
| 3220 (with-current-buffer buffer (funcall pred))) | |
| 612 | 3221 (if arg |
| 3222 t | |
| 3223 ;; #### We should provide a per-buffer means to | |
| 3224 ;; disable the switching. For instance, you might | |
| 3225 ;; want to turn it off for buffers the contents of | |
| 3226 ;; which is meaningless to humans, such as | |
| 3227 ;; `.newsrc.eld'. | |
| 3228 (when (and switch-buffer | |
| 3229 ;; map-y-or-n-p is displaying help | |
| 3230 (not (eq last-buffer buffer))) | |
| 3231 (unless (one-window-p) | |
| 3232 (delete-other-windows)) | |
| 3233 (setq switched t) | |
| 3234 ;; #### Consider using `display-buffer' here for 21.1! | |
| 3235 ;;(display-buffer buffer nil (selected-frame))) | |
| 3236 (switch-to-buffer buffer t)) | |
| 3237 (if (buffer-file-name buffer) | |
| 3238 (format "Save file %s? " | |
| 3239 (buffer-file-name buffer)) | |
| 3240 (format "Save buffer %s? " | |
| 3241 (buffer-name buffer))))) | |
| 3242 (setq last-buffer buffer))) | |
| 428 | 3243 (lambda (buffer) |
| 3244 (set-buffer buffer) | |
| 3245 (condition-case () | |
| 3246 (save-buffer) | |
| 3247 (error nil))) | |
| 3248 (buffer-list) | |
| 3249 '("buffer" "buffers" "save") | |
|
5249
d4fae3ebf26a
Add `save-some-buffers-action-alist'.
Mike Sperber <sperber@deinprogramm.de>
parents:
5245
diff
changeset
|
3250 save-some-buffers-action-alist)) |
| 428 | 3251 (abbrevs-done |
| 3252 (and save-abbrevs abbrevs-changed | |
| 3253 (progn | |
| 3254 (if (or arg | |
| 1333 | 3255 (eq save-abbrevs 'silently) |
| 428 | 3256 (y-or-n-p (format "Save abbrevs in %s? " abbrev-file-name))) |
| 3257 (write-abbrev-file nil)) | |
| 3258 ;; Don't keep bothering user if he says no. | |
| 3259 (setq abbrevs-changed nil) | |
| 3260 t)))) | |
| 3261 (or (> files-done 0) abbrevs-done | |
| 3262 (display-message 'no-log "(No files need saving)")) | |
| 3263 switched)) | |
| 3264 | |
| 3265 | |
| 1333 | 3266 |
| 428 | 3267 (defun not-modified (&optional arg) |
| 3268 "Mark current buffer as unmodified, not needing to be saved. | |
| 3269 With prefix arg, mark buffer as modified, so \\[save-buffer] will save. | |
| 3270 | |
| 3271 It is not a good idea to use this function in Lisp programs, because it | |
| 3272 prints a message in the minibuffer. Instead, use `set-buffer-modified-p'." | |
| 3273 (interactive "_P") | |
| 3274 (if arg ;; rewritten for I18N3 snarfing | |
| 3275 (display-message 'command "Modification-flag set") | |
| 3276 (display-message 'command "Modification-flag cleared")) | |
| 3277 (set-buffer-modified-p arg)) | |
| 3278 | |
| 3279 (defun toggle-read-only (&optional arg) | |
| 1333 | 3280 "Change whether this buffer is visiting its file read-only. |
| 3281 With arg, set read-only iff arg is positive. | |
| 3282 If visiting file read-only and `view-read-only' is non-nil, enter view mode." | |
| 3283 (interactive "P") | |
| 3284 (cond | |
| 3285 ((and arg (if (> (prefix-numeric-value arg) 0) buffer-read-only | |
| 3286 (not buffer-read-only))) ; If buffer-read-only is set correctly, | |
| 3287 nil) ; do nothing. | |
| 3288 ;; Toggle. | |
| 3289 ((and buffer-read-only view-minor-mode) | |
| 3290 ;(View-exit-and-edit) | |
| 3291 (view-mode) | |
| 3292 (make-local-variable 'view-read-only) | |
| 3293 (setq view-read-only t)) ; Must leave view mode. | |
| 3294 ((and (not buffer-read-only) view-read-only | |
| 3295 (not (eq (get major-mode 'mode-class) 'special))) | |
| 3296 ;(view-mode-enter) | |
| 3297 (view-mode)) | |
| 3298 (t (setq buffer-read-only (not buffer-read-only)) | |
| 3299 (force-mode-line-update)))) | |
| 428 | 3300 |
| 3301 (defun insert-file (filename &optional codesys) | |
| 3302 "Insert contents of file FILENAME into buffer after point. | |
| 3303 Set mark after the inserted text. | |
| 3304 | |
| 771 | 3305 Optional second argument specifies the coding system to use when decoding |
| 3306 the file. Interactively, with a prefix argument, you will be prompted for | |
| 3307 the coding system. | |
| 428 | 3308 |
| 771 | 3309 This function is meant for the user to run interactively. Don't call it |
| 3310 from programs! Use `insert-file-contents' instead. \(Its calling sequence | |
| 3311 is different; see its documentation)." | |
| 428 | 3312 (interactive "*fInsert file: \nZCoding system: ") |
| 3313 (if (file-directory-p filename) | |
| 3314 (signal 'file-error (list "Opening input file" "file is a directory" | |
| 3315 filename))) | |
| 3316 (let ((tem | |
| 3317 (if codesys | |
| 3318 (let ((coding-system-for-read | |
| 3319 (get-coding-system codesys))) | |
| 3320 (insert-file-contents filename)) | |
| 3321 (insert-file-contents filename)))) | |
| 3322 (push-mark (+ (point) (car (cdr tem)))))) | |
| 3323 | |
| 3324 (defun append-to-file (start end filename &optional codesys) | |
| 3325 "Append the contents of the region to the end of file FILENAME. | |
| 771 | 3326 When called from a function, expects three arguments, START, END and |
| 3327 FILENAME. START and END are buffer positions saying what text to write. | |
| 3328 Optional fourth argument specifies the coding system to use when encoding | |
| 3329 the file. Interactively, with a prefix argument, you will be prompted for | |
| 3330 the coding system." | |
| 428 | 3331 (interactive "r\nFAppend to file: \nZCoding system: ") |
| 3332 (if codesys | |
| 3333 (let ((buffer-file-coding-system (get-coding-system codesys))) | |
| 3334 (write-region start end filename t)) | |
| 3335 (write-region start end filename t))) | |
| 3336 | |
| 3337 (defun file-newest-backup (filename) | |
| 3338 "Return most recent backup file for FILENAME or nil if no backups exist." | |
| 1333 | 3339 ;; `make-backup-file-name' will get us the right directory for |
| 3340 ;; ordinary or numeric backups. It might create a directory for | |
| 3341 ;; backups as a side-effect, according to `backup-directory-alist'. | |
| 3342 (let* ((filename (file-name-sans-versions | |
| 3343 (make-backup-file-name filename))) | |
| 428 | 3344 (file (file-name-nondirectory filename)) |
| 3345 (dir (file-name-directory filename)) | |
| 3346 (comp (file-name-all-completions file dir)) | |
| 1333 | 3347 (newest nil) |
| 3348 tem) | |
| 428 | 3349 (while comp |
| 1333 | 3350 (setq tem (pop comp)) |
| 3351 (cond ((and (backup-file-name-p tem) | |
| 3352 (string= (file-name-sans-versions tem) file)) | |
| 3353 (setq tem (concat dir tem)) | |
| 3354 (if (or (null newest) | |
| 3355 (file-newer-than-file-p tem newest)) | |
| 3356 (setq newest tem))))) | |
| 428 | 3357 newest)) |
| 3358 | |
| 3359 (defun rename-uniquely () | |
| 3360 "Rename current buffer to a similar name not already taken. | |
| 3361 This function is useful for creating multiple shell process buffers | |
| 3362 or multiple mail buffers, etc." | |
| 3363 (interactive) | |
| 3364 (save-match-data | |
| 1333 | 3365 (let ((base-name (buffer-name))) |
| 3366 (and (string-match "<[0-9]+>\\'" base-name) | |
| 3367 (not (and buffer-file-name | |
| 3368 (string= base-name | |
| 3369 (file-name-nondirectory buffer-file-name)))) | |
| 3370 ;; If the existing buffer name has a <NNN>, | |
| 3371 ;; which isn't part of the file name (if any), | |
| 3372 ;; then get rid of that. | |
| 3373 (setq base-name (substring base-name 0 (match-beginning 0)))) | |
| 3374 (rename-buffer (generate-new-buffer-name base-name)) | |
| 3375 (force-mode-line-update)))) | |
| 428 | 3376 |
| 3377 (defun make-directory-path (path) | |
| 3378 "Create all the directories along path that don't exist yet." | |
| 3379 (interactive "Fdirectory path to create: ") | |
| 3380 (make-directory path t)) | |
| 3381 | |
| 3382 (defun make-directory (dir &optional parents) | |
| 3383 "Create the directory DIR and any nonexistent parent dirs. | |
| 3384 Interactively, the default choice of directory to create | |
| 3385 is the current default directory for file names. | |
| 3386 That is useful when you have visited a file in a nonexistent directory. | |
| 3387 | |
| 3388 Noninteractively, the second (optional) argument PARENTS says whether | |
| 3389 to create parent directories if they don't exist." | |
| 3390 (interactive (list (let ((current-prefix-arg current-prefix-arg)) | |
| 3391 (read-directory-name "Create directory: ")) | |
| 3392 current-prefix-arg)) | |
| 3393 (let ((handler (find-file-name-handler dir 'make-directory))) | |
| 3394 (if handler | |
| 3395 (funcall handler 'make-directory dir parents) | |
| 3396 (if (not parents) | |
| 3397 (make-directory-internal dir) | |
| 3398 (let ((dir (directory-file-name (expand-file-name dir))) | |
| 3399 create-list) | |
| 3400 (while (not (file-exists-p dir)) | |
| 3401 (setq create-list (cons dir create-list) | |
| 3402 dir (directory-file-name (file-name-directory dir)))) | |
| 3403 (while create-list | |
| 3404 (make-directory-internal (car create-list)) | |
| 3405 (setq create-list (cdr create-list)))))))) | |
| 3406 | |
| 3407 (put 'revert-buffer-function 'permanent-local t) | |
| 3408 (defvar revert-buffer-function nil | |
| 3409 "Function to use to revert this buffer, or nil to do the default. | |
| 3410 The function receives two arguments IGNORE-AUTO and NOCONFIRM, | |
| 3411 which are the arguments that `revert-buffer' received.") | |
| 3412 | |
| 3413 (put 'revert-buffer-insert-file-contents-function 'permanent-local t) | |
| 3414 (defvar revert-buffer-insert-file-contents-function nil | |
| 3415 "Function to use to insert contents when reverting this buffer. | |
| 3416 Gets two args, first the nominal file name to use, | |
| 849 | 3417 and second, t if reading the auto-save file. |
| 3418 If the current buffer contents are to be discarded, the function must do | |
| 1333 | 3419 so itself. |
| 3420 | |
| 3421 The function you specify is responsible for updating (or preserving) point.") | |
| 428 | 3422 |
| 3423 (defvar before-revert-hook nil | |
| 3424 "Normal hook for `revert-buffer' to run before reverting. | |
| 3425 If `revert-buffer-function' is used to override the normal revert | |
| 3426 mechanism, this hook is not used.") | |
| 3427 | |
| 3428 (defvar after-revert-hook nil | |
| 3429 "Normal hook for `revert-buffer' to run after reverting. | |
| 3430 Note that the hook value that it runs is the value that was in effect | |
| 3431 before reverting; that makes a difference if you have buffer-local | |
| 3432 hook functions. | |
| 3433 | |
| 3434 If `revert-buffer-function' is used to override the normal revert | |
| 3435 mechanism, this hook is not used.") | |
| 3436 | |
| 3437 (defvar revert-buffer-internal-hook nil | |
| 3438 "Don't use this.") | |
| 3439 | |
| 1333 | 3440 ;; END SYNC WITH FSF 21.2. |
| 3441 | |
| 428 | 3442 (defun revert-buffer (&optional ignore-auto noconfirm preserve-modes) |
| 3443 "Replace the buffer text with the text of the visited file on disk. | |
| 3444 This undoes all changes since the file was visited or saved. | |
| 3445 With a prefix argument, offer to revert from latest auto-save file, if | |
| 3446 that is more recent than the visited file. | |
| 3447 | |
| 849 | 3448 This command also refreshes certain special buffers that contain text |
| 3449 which doesn't come from a file, but reflects some other data base | |
| 3450 instead: for example, Dired buffers and buffer-list buffers. This is | |
| 3451 implemented by having the modes set `revert-buffer-function'. | |
| 428 | 3452 |
| 3453 When called from Lisp, the first argument is IGNORE-AUTO; only offer | |
| 3454 to revert from the auto-save file when this is nil. Note that the | |
| 3455 sense of this argument is the reverse of the prefix argument, for the | |
| 3456 sake of backward compatibility. IGNORE-AUTO is optional, defaulting | |
| 3457 to nil. | |
| 3458 | |
| 3459 Optional second argument NOCONFIRM means don't ask for confirmation at | |
| 3460 all. | |
| 3461 | |
| 3462 Optional third argument PRESERVE-MODES non-nil means don't alter | |
| 849 | 3463 the buffer's modes. Otherwise, reinitialize them using `normal-mode'. |
| 428 | 3464 |
| 3465 If the value of `revert-buffer-function' is non-nil, it is called to | |
| 3466 do all the work for this command. Otherwise, the hooks | |
| 3467 `before-revert-hook' and `after-revert-hook' are run at the beginning | |
| 3468 and the end, and if `revert-buffer-insert-file-contents-function' is | |
| 819 | 3469 non-nil, it is called instead of rereading visited file contents. |
| 3470 | |
| 849 | 3471 If the buffer-modified flag is nil, and we are not reverting from an |
| 3472 auto-save file, then compare the contents of the buffer and the file. | |
| 3473 Revert only if they differ." | |
| 428 | 3474 |
| 3475 ;; I admit it's odd to reverse the sense of the prefix argument, but | |
| 3476 ;; there is a lot of code out there which assumes that the first | |
| 3477 ;; argument should be t to avoid consulting the auto-save file, and | |
| 3478 ;; there's no straightforward way to encourage authors to notice a | |
| 3479 ;; reversal of the argument sense. So I'm just changing the user | |
| 3480 ;; interface, but leaving the programmatic interface the same. | |
| 3481 (interactive (list (not current-prefix-arg))) | |
| 3482 (if revert-buffer-function | |
| 3483 (funcall revert-buffer-function ignore-auto noconfirm) | |
| 3484 (let* ((opoint (point)) | |
| 819 | 3485 (newbuf nil) |
| 988 | 3486 (found nil) |
| 819 | 3487 (delay-prompt nil) |
| 428 | 3488 (auto-save-p (and (not ignore-auto) |
| 3489 (recent-auto-save-p) | |
| 3490 buffer-auto-save-file-name | |
| 3491 (file-readable-p buffer-auto-save-file-name) | |
| 3492 (y-or-n-p | |
| 3493 "Buffer has been auto-saved recently. Revert from auto-save file? "))) | |
| 3494 (file-name (if auto-save-p | |
| 3495 buffer-auto-save-file-name | |
| 3496 buffer-file-name))) | |
| 3497 (cond ((null file-name) | |
| 3498 (error "Buffer does not seem to be associated with any file")) | |
| 3499 ((or noconfirm | |
| 3500 (and (not (buffer-modified-p)) | |
| 988 | 3501 (dolist (rx revert-without-query found) |
| 3502 (when (string-match rx file-name) | |
| 3503 (setq found t)))) | |
| 819 | 3504 ;; If we might perform an optimized revert then we |
| 3505 ;; want to delay prompting in case we don't need to | |
| 3506 ;; do it at all | |
| 3507 (and (not auto-save-p) | |
| 3508 (not (buffer-modified-p)) | |
| 3509 (setq delay-prompt t)) | |
| 428 | 3510 (yes-or-no-p (format "Revert buffer from file %s? " |
| 3511 file-name))) | |
| 3512 (run-hooks 'before-revert-hook) | |
| 819 | 3513 ;; Only perform our optimized revert if nothing obvious |
| 3514 ;; has changed. | |
| 3515 (cond ((or auto-save-p | |
| 3516 (buffer-modified-p) | |
| 3517 (and (setq newbuf (revert-buffer-internal | |
| 3518 file-name)) | |
| 988 | 3519 (or noconfirm found |
| 838 | 3520 (and delay-prompt |
| 3521 (yes-or-no-p | |
| 3522 (format "Revert buffer from file %s? " | |
| 3523 file-name)))))) | |
| 819 | 3524 ;; If file was backed up but has changed since, |
| 3525 ;; we should make another backup. | |
| 3526 (and (not auto-save-p) | |
| 3527 (not (verify-visited-file-modtime (current-buffer))) | |
| 3528 (setq buffer-backed-up nil)) | |
| 3529 ;; Get rid of all undo records for this buffer. | |
| 3530 (or (eq buffer-undo-list t) | |
| 3531 (setq buffer-undo-list nil)) | |
| 3532 ;; Effectively copy the after-revert-hook status, | |
| 3533 ;; since after-find-file will clobber it. | |
| 3534 (let ((global-hook (default-value 'after-revert-hook)) | |
| 3535 (local-hook-p (local-variable-p 'after-revert-hook | |
| 3536 (current-buffer))) | |
| 3537 (local-hook (and (local-variable-p 'after-revert-hook | |
| 3538 (current-buffer)) | |
| 3539 after-revert-hook))) | |
| 3540 (let (buffer-read-only | |
| 3541 ;; Don't make undo records for the reversion. | |
| 3542 (buffer-undo-list t)) | |
| 3543 (if revert-buffer-insert-file-contents-function | |
| 3544 (funcall revert-buffer-insert-file-contents-function | |
| 3545 file-name auto-save-p) | |
| 3546 (if (not (file-exists-p file-name)) | |
| 3547 (error "File %s no longer exists!" file-name)) | |
| 3548 ;; Bind buffer-file-name to nil | |
| 3549 ;; so that we don't try to lock the file. | |
| 3550 (let ((buffer-file-name nil)) | |
| 3551 (or auto-save-p | |
| 3552 (unlock-buffer))) | |
| 3553 (widen) | |
| 3554 ;; When reading in an autosave, it's encoded using | |
| 3555 ;; `escape-quoted', so we need to use it. (It is always | |
| 3556 ;; safe to specify `escape-quoted': | |
| 3557 ;; | |
| 3558 ;; 1. If file-coding but no Mule, `escape-quoted' is | |
| 3559 ;; aliased to `binary'. | |
| 3560 ;; 2. If no file-coding, all coding systems devolve into | |
| 3561 ;; `binary'. | |
| 3562 ;; 3. ASCII and ISO8859-1 are encoded the same in both | |
| 3563 ;; `binary' and `escape-quoted', so they will be | |
| 3564 ;; compatible for the most part.) | |
| 3565 ;; | |
| 3566 ;; Otherwise, use coding-system-for-read if explicitly | |
| 3567 ;; given (e.g. the "Revert Buffer with Specified | |
| 3568 ;; Encoding" menu entries), or use the coding system | |
| 3569 ;; that the file was loaded as. | |
| 3570 (let* ((coding-system-for-read | |
| 3571 (if auto-save-p 'escape-quoted | |
| 3572 (or coding-system-for-read | |
| 3573 buffer-file-coding-system-when-loaded))) | |
| 3574 ;; If the bfcs wasn't changed from its original | |
| 3575 ;; value (other than possible EOL change), then we | |
| 3576 ;; should update it for the new coding system. | |
| 3577 (should-update-bfcs | |
| 3578 (eq (coding-system-base | |
| 3579 buffer-file-coding-system-when-loaded) | |
| 3580 (coding-system-base | |
| 3581 buffer-file-coding-system))) | |
| 3582 (old-bfcs buffer-file-coding-system) | |
| 3583 ;; But if the EOL was changed, match it in the new | |
| 3584 ;; value of bfcs. | |
| 3585 (adjust-eol | |
| 3586 (and should-update-bfcs | |
| 3587 (not | |
| 3588 (eq (get-coding-system | |
| 3589 buffer-file-coding-system-when-loaded) | |
| 3590 (get-coding-system | |
| 3591 buffer-file-coding-system)))))) | |
| 3592 (insert-file-contents file-name (not auto-save-p) | |
| 3593 nil nil t) | |
| 3594 (when should-update-bfcs | |
| 3595 (setq buffer-file-coding-system old-bfcs) | |
| 3596 (set-buffer-file-coding-system | |
| 3597 (if adjust-eol | |
| 3598 (coding-system-base | |
| 3599 buffer-file-coding-system-when-loaded) | |
| 771 | 3600 buffer-file-coding-system-when-loaded) |
| 4024 | 3601 (not adjust-eol) t))))) |
| 819 | 3602 (goto-char (min opoint (point-max))) |
| 3603 ;; Recompute the truename in case changes in symlinks | |
| 3604 ;; have changed the truename. | |
| 3605 ;;XEmacs: already done by insert-file-contents | |
| 3606 ;;(setq buffer-file-truename | |
| 3607 ;;(abbreviate-file-name (file-truename buffer-file-name))) | |
| 3608 (after-find-file nil nil t t preserve-modes) | |
| 3609 ;; Run after-revert-hook as it was before we reverted. | |
| 3610 (setq-default revert-buffer-internal-hook global-hook) | |
| 3611 (if local-hook-p | |
| 3612 (progn | |
| 3613 (make-local-variable 'revert-buffer-internal-hook) | |
| 3614 (setq revert-buffer-internal-hook local-hook)) | |
| 3615 (kill-local-variable 'revert-buffer-internal-hook)) | |
| 3616 (run-hooks 'revert-buffer-internal-hook))) | |
| 3617 ((null newbuf) | |
| 3618 ;; The resultant buffer is identical, alter | |
| 3619 ;; modtime, update mods and exit | |
| 3620 (set-visited-file-modtime) | |
| 2030 | 3621 (after-find-file nil nil t t t) |
| 3622 ;; We preserved modes above so fixup the local | |
| 3623 ;; variables manually | |
| 3624 (condition-case err | |
| 3625 (hack-local-variables) | |
| 3626 (error (lwarn 'local-variables 'warning | |
| 3627 "File local-variables error: %s" | |
| 3628 (error-message-string err))))) | |
| 819 | 3629 (t t)) |
| 428 | 3630 t))))) |
| 3631 | |
| 2030 | 3632 ;; #### wouldn't something like `revert-buffer-compare-with-file' be a |
| 3633 ;; better name? | |
| 3634 ;; #### why is the argument optional? | |
| 819 | 3635 (defun revert-buffer-internal (&optional file-name) |
| 849 | 3636 "Read contents of FILE-NAME into a buffer, and compare to current buffer. |
| 3637 Return nil if identical, and the new buffer if different." | |
| 3638 | |
| 819 | 3639 (let* ((newbuf (get-buffer-create " *revert*")) |
| 3714 | 3640 bmin bmax |
| 3641 ;; #### b-f-c-s is _not necessarily_ the coding system that | |
| 3642 ;; was used to read in the file. See its docstring. | |
| 3643 (coding-system buffer-file-coding-system)) | |
| 819 | 3644 (save-excursion |
| 3645 (set-buffer newbuf) | |
| 826 | 3646 (with-obsolete-variable '(before-change-function after-change-function) |
| 3647 (let (buffer-read-only | |
| 3648 (buffer-undo-list t) | |
| 3649 after-change-function | |
| 3650 after-change-functions | |
| 3651 before-change-function | |
| 3638 | 3652 before-change-functions |
| 3714 | 3653 (coding-system-for-read coding-system) |
| 3654 ) | |
| 826 | 3655 (if revert-buffer-insert-file-contents-function |
| 3656 (funcall revert-buffer-insert-file-contents-function | |
| 3657 file-name nil) | |
| 3658 (if (not (file-exists-p file-name)) | |
| 3659 (error "File %s no longer exists!" file-name)) | |
| 3660 (widen) | |
| 863 | 3661 (insert-file-contents file-name nil nil nil t) |
| 826 | 3662 (setq bmin (point-min) |
| 3663 bmax (point-max)))))) | |
| 819 | 3664 (if (not (and (eq bmin (point-min)) |
| 3665 (eq bmax (point-max)) | |
| 3666 (eq (compare-buffer-substrings | |
| 3667 newbuf bmin bmax (current-buffer) bmin bmax) 0))) | |
| 3668 newbuf | |
| 863 | 3669 (and (kill-buffer newbuf) nil)))) |
| 819 | 3670 |
| 1333 | 3671 ;; BEGIN SYNC WITH FSF 21.2. |
| 3672 | |
| 844 | 3673 (defvar recover-file-diff-program "diff" |
| 3674 "Absolute or relative name of the `diff' program used by `recover-file'.") | |
| 3675 (defvar recover-file-diff-arguments '("-c") | |
| 3676 "List of arguments (switches) to pass to `diff' by `recover-file'.") | |
| 3677 | |
| 428 | 3678 (defun recover-file (file) |
| 3679 "Visit file FILE, but get contents from its last auto-save file." | |
| 3680 ;; Actually putting the file name in the minibuffer should be used | |
| 3681 ;; only rarely. | |
| 3682 ;; Not just because users often use the default. | |
| 3683 (interactive "FRecover file: ") | |
| 3684 (setq file (expand-file-name file)) | |
| 3685 (let ((handler (or (find-file-name-handler file 'recover-file) | |
| 3686 (find-file-name-handler | |
| 3687 (let ((buffer-file-name file)) | |
| 3688 (make-auto-save-file-name)) | |
| 3689 'recover-file)))) | |
| 3690 (if handler | |
| 3691 (funcall handler 'recover-file file) | |
| 464 | 3692 (if (auto-save-file-name-p (file-name-nondirectory file)) |
| 428 | 3693 (error "%s is an auto-save file" file)) |
| 3694 (let ((file-name (let ((buffer-file-name file)) | |
| 3695 (make-auto-save-file-name)))) | |
| 3696 (cond ((if (file-exists-p file) | |
| 3697 (not (file-newer-than-file-p file-name file)) | |
| 3698 (not (file-exists-p file-name))) | |
| 3699 (error "Auto-save file %s not current" file-name)) | |
| 844 | 3700 (t |
| 3701 (save-window-excursion | |
| 464 | 3702 ;; XEmacs change: use insert-directory instead of |
| 844 | 3703 ;; calling ls directly. Add option for diff. |
| 464 | 3704 (with-output-to-temp-buffer "*Directory*" |
| 3705 (buffer-disable-undo standard-output) | |
| 3706 (save-excursion | |
| 1346 | 3707 (let ((switches |
| 3708 (declare-boundp dired-listing-switches))) | |
| 1333 | 3709 (if (file-symlink-p file) |
| 3710 (setq switches (concat switches "L"))) | |
| 3711 (set-buffer standard-output) | |
| 3712 ;; XEmacs had the following line, not in FSF. | |
| 3713 (setq default-directory (file-name-directory file)) | |
| 3714 ;; Use insert-directory-safely, not insert-directory, | |
| 3715 ;; because these files might not exist. In particular, | |
| 3716 ;; FILE might not exist if the auto-save file was for | |
| 3717 ;; a buffer that didn't visit a file, such as "*mail*". | |
| 3718 ;; The code in v20.x called `ls' directly, so we need | |
| 3719 ;; to emulate what `ls' did in that case. | |
| 3720 (insert-directory-safely file switches) | |
| 3721 (insert-directory-safely file-name switches)))) | |
| 844 | 3722 (block nil |
| 3723 (while t | |
| 3724 (case (get-user-response | |
| 3725 nil | |
| 3726 ;; Formerly included file name. Useless now that | |
| 3727 ;; we display an ls of the files, and potentially | |
| 3728 ;; fills up the minibuffer, esp. with autosaves | |
| 3729 ;; all in one directory. | |
| 3730 "Recover auto save file? " | |
| 3731 '(("yes" "%_Yes" yes) | |
| 3732 ("no" "%_No" no) | |
| 3733 ("diff" "%_Diff" diff))) | |
| 3734 (no (error "Recover-file cancelled.")) | |
| 3735 (yes | |
| 3736 (switch-to-buffer (find-file-noselect file t)) | |
| 1333 | 3737 (let ((buffer-read-only nil) |
| 3738 ;; Keep the current buffer-file-coding-system. | |
| 3739 (coding-system buffer-file-coding-system) | |
| 3740 ;; Auto-saved file shoule be read without any code conversion. | |
| 3741 (coding-system-for-read 'escape-quoted)) | |
| 844 | 3742 (erase-buffer) |
| 1333 | 3743 (insert-file-contents file-name nil) |
| 4024 | 3744 (set-buffer-file-coding-system coding-system |
| 3745 nil t)) | |
| 844 | 3746 (after-find-file nil nil t) |
| 3747 (return nil)) | |
| 3748 (diff | |
| 3749 ;; rather than just diff the two files (which would | |
| 3750 ;; be easy), we have to deal with the fact that | |
| 3751 ;; they may be in different formats, since | |
| 3752 ;; auto-saves are always in escape-quoted. so, we | |
| 3753 ;; read the file into a buffer (#### should we look | |
| 3754 ;; at or use a file if it's already in a buffer? | |
| 3755 ;; maybe we would find hints as to the encoding of | |
| 3756 ;; the file?), then we save the resulting buffer in | |
| 3757 ;; escape-quoted, do the diff (between two files | |
| 3758 ;; both in escape-quoted) and read in the results | |
| 3759 ;; using coding system escape-quoted. That way, we | |
| 3760 ;; should get what's correct most of the time. | |
| 3761 (let ((buffer (generate-new-buffer "*recover*")) | |
| 3762 (temp | |
| 3763 (make-temp-name | |
| 3764 (concat (file-name-as-directory | |
| 3765 (temp-directory)) | |
| 3766 (file-name-nondirectory file) "-")))) | |
| 3767 (unwind-protect | |
| 3768 (progn | |
| 3769 (save-current-buffer | |
| 3770 (set-buffer buffer) | |
| 3771 (insert-file-contents file) | |
| 3772 (let ((coding-system-for-write | |
| 3773 'escape-quoted)) | |
| 3774 (write-region (point-min) (point-max) | |
| 3775 temp nil 'silent))) | |
|
5245
0d71bcf96ffd
Add ` diff-buffer-with-file'.
Mike Sperber <sperber@deinprogramm.de>
parents:
5211
diff
changeset
|
3776 (diff-files-for-recover "Autosave" temp file-name file file-name 'escape-quoted)) |
| 844 | 3777 (ignore-errors (kill-buffer buffer)) |
| 3778 (ignore-file-errors | |
| 3779 (delete-file temp))))))))))))))) | |
| 428 | 3780 |
| 3781 (defun recover-session () | |
| 3782 "Recover auto save files from a previous Emacs session. | |
| 3783 This command first displays a Dired buffer showing you the | |
| 3784 previous sessions that you could recover from. | |
| 3785 To choose one, move point to the proper line and then type C-c C-c. | |
| 3786 Then you'll be asked about a number of files to recover." | |
| 3787 (interactive) | |
| 3788 (unless (fboundp 'dired) | |
| 3789 (error "recover-session requires dired")) | |
| 3790 (if (null auto-save-list-file-prefix) | |
| 3791 (error | |
| 3792 "You set `auto-save-list-file-prefix' to disable making session files")) | |
| 1333 | 3793 (let ((dir (file-name-directory auto-save-list-file-prefix))) |
| 3794 (unless (file-directory-p dir) | |
| 3795 (make-directory dir t))) | |
| 851 | 3796 (let* ((auto-save-list-dir |
| 3797 (file-name-directory auto-save-list-file-prefix)) | |
| 3798 (files (directory-files | |
| 3799 auto-save-list-dir | |
| 3800 t | |
| 3801 (concat "^" (regexp-quote (file-name-nondirectory | |
| 3802 auto-save-list-file-prefix))))) | |
| 3803 (files (sort (delete-if-not #'Recover-session-files-from-auto-save-list-file | |
| 3804 files) #'file-newer-than-file-p))) | |
| 3805 (unless files | |
| 3806 (error "No sessions can be recovered now")) | |
| 3807 (declare-fboundp (dired (cons auto-save-list-dir files))) | |
| 1333 | 3808 (save-excursion |
| 3809 (goto-char (point-min)) | |
| 3810 (or (looking-at "Move to the session you want to recover,") | |
| 3811 (let ((inhibit-read-only t)) | |
| 3812 (delete-matching-lines "^[ \t]*total.*$") | |
| 3813 (insert "Move to the session you want to recover,\n" | |
| 3814 "then type C-c C-c to select it.\n\n" | |
| 3815 "You can also delete some of these files;\n" | |
| 3816 "type d on a line to mark that file for deletion.\n\n")))) | |
| 851 | 3817 (use-local-map (let ((map (make-sparse-keymap))) |
| 3818 (set-keymap-parents map (list (current-local-map))) | |
| 3819 map)) | |
| 3820 (define-key (current-local-map) "\C-c\C-c" 'recover-session-finish))) | |
| 428 | 3821 |
| 851 | 3822 (defun Recover-session-files-from-auto-save-list-file (file) |
| 3823 "Return the auto save files in list file FILE that are current." | |
| 3824 (let (files | |
| 428 | 3825 (buffer (get-buffer-create " *recover*"))) |
| 3826 (unwind-protect | |
| 3827 (save-excursion | |
| 3828 ;; Read in the auto-save-list file. | |
| 3829 (set-buffer buffer) | |
| 3830 (erase-buffer) | |
| 771 | 3831 (let ((coding-system-for-read 'escape-quoted)) |
| 3832 (insert-file-contents file)) | |
| 428 | 3833 ;; Loop thru the text of that file |
| 3834 ;; and get out the names of the files to recover. | |
| 3835 (while (not (eobp)) | |
| 3836 (let (thisfile autofile) | |
| 3837 (if (eolp) | |
| 3838 ;; This is a pair of lines for a non-file-visiting buffer. | |
| 3839 ;; Get the auto-save file name and manufacture | |
| 3840 ;; a "visited file name" from that. | |
| 3841 (progn | |
| 3842 (forward-line 1) | |
| 3843 (setq autofile | |
| 3844 (buffer-substring-no-properties | |
| 3845 (point) | |
| 3846 (save-excursion | |
| 3847 (end-of-line) | |
| 3848 (point)))) | |
| 3849 (setq thisfile | |
| 3850 (expand-file-name | |
| 3851 (substring | |
| 3852 (file-name-nondirectory autofile) | |
| 3853 1 -1) | |
| 3854 (file-name-directory autofile))) | |
| 3855 (forward-line 1)) | |
| 3856 ;; This pair of lines is a file-visiting | |
| 3857 ;; buffer. Use the visited file name. | |
| 3858 (progn | |
| 3859 (setq thisfile | |
| 3860 (buffer-substring-no-properties | |
| 3861 (point) (progn (end-of-line) (point)))) | |
| 3862 (forward-line 1) | |
| 3863 (setq autofile | |
| 3864 (buffer-substring-no-properties | |
| 3865 (point) (progn (end-of-line) (point)))) | |
| 3866 (forward-line 1))) | |
| 3867 ;; Ignore a file if its auto-save file does not exist now. | |
| 3868 (if (file-exists-p autofile) | |
| 3869 (setq files (cons thisfile files))))) | |
| 851 | 3870 (setq files (nreverse files))) |
| 428 | 3871 (kill-buffer buffer)))) |
| 3872 | |
| 851 | 3873 (defun recover-session-finish () |
| 3874 "Choose one saved session to recover auto-save files from. | |
| 3875 This command is used in the special Dired buffer created by | |
| 3876 \\[recover-session]." | |
| 3877 (interactive) | |
| 3878 ;; Get the name of the session file to recover from. | |
| 3879 (let ((file (declare-fboundp (dired-get-filename)))) | |
| 1346 | 3880 (declare-fboundp (dired-unmark 1)) |
| 851 | 3881 ;; #### dired-do-flagged-delete in FSF. |
| 3882 ;; This version is for ange-ftp | |
| 1346 | 3883 ;;(declare-fboundp (dired-do-deletions t)) |
| 851 | 3884 ;; This version is for efs |
| 3885 (declare-fboundp (dired-expunge-deletions)) | |
| 3886 (let ((files (Recover-session-files-from-auto-save-list-file file))) | |
| 3887 ;; The file contains a pair of line for each auto-saved buffer. | |
| 3888 ;; The first line of the pair contains the visited file name | |
| 3889 ;; or is empty if the buffer was not visiting a file. | |
| 3890 ;; The second line is the auto-save file name. | |
| 3891 (if files | |
| 3892 (map-y-or-n-p "Recover %s? " | |
| 3893 (lambda (file) | |
| 3894 (condition-case nil | |
| 3895 (save-excursion (recover-file file)) | |
| 3896 (error | |
| 3897 (lwarn 'recover 'alert | |
| 3898 "Failed to recover `%s'" file)))) | |
| 3899 files | |
| 3900 '("file" "files" "recover")) | |
| 3901 (message "No files can be recovered from this session now"))))) | |
| 3902 | |
| 428 | 3903 (defun kill-some-buffers (&optional list) |
| 3904 "For each buffer in LIST, ask whether to kill it. | |
| 3905 LIST defaults to all existing live buffers." | |
| 3906 (interactive) | |
| 3907 (if (null list) | |
| 3908 (setq list (buffer-list))) | |
| 3909 (while list | |
| 3910 (let* ((buffer (car list)) | |
| 3911 (name (buffer-name buffer))) | |
| 3912 (and (not (string-equal name "")) | |
| 1333 | 3913 (not (eq (aref name 0) ?\ )) |
| 428 | 3914 (yes-or-no-p |
| 3915 (format | |
| 3916 (if (buffer-modified-p buffer) | |
| 3917 (gettext "Buffer %s HAS BEEN EDITED. Kill? ") | |
| 3918 (gettext "Buffer %s is unmodified. Kill? ")) | |
| 3919 name)) | |
| 3920 (kill-buffer buffer))) | |
| 3921 (setq list (cdr list)))) | |
| 3922 | |
| 3923 (defun auto-save-mode (arg) | |
| 3924 "Toggle auto-saving of contents of current buffer. | |
| 3925 With prefix argument ARG, turn auto-saving on if positive, else off." | |
| 3926 (interactive "P") | |
| 3927 (setq buffer-auto-save-file-name | |
| 3928 (and (if (null arg) | |
| 3929 (or (not buffer-auto-save-file-name) | |
| 3930 ;; If autosave is off because buffer has shrunk, | |
| 3931 ;; then toggling should turn it on. | |
| 3932 (< buffer-saved-size 0)) | |
| 3933 (or (eq arg t) (listp arg) (and (integerp arg) (> arg 0)))) | |
| 3934 (if (and buffer-file-name auto-save-visited-file-name | |
| 3935 (not buffer-read-only)) | |
| 3936 buffer-file-name | |
| 3937 (make-auto-save-file-name)))) | |
| 3938 ;; If -1 was stored here, to temporarily turn off saving, | |
| 3939 ;; turn it back on. | |
| 3940 (and (< buffer-saved-size 0) | |
| 3941 (setq buffer-saved-size 0)) | |
| 3942 (if (interactive-p) | |
| 3943 (if buffer-auto-save-file-name ;; rewritten for I18N3 snarfing | |
| 3944 (display-message 'command "Auto-save on (in this buffer)") | |
| 3945 (display-message 'command "Auto-save off (in this buffer)"))) | |
| 3946 buffer-auto-save-file-name) | |
| 3947 | |
| 3948 (defun rename-auto-save-file () | |
| 3949 "Adjust current buffer's auto save file name for current conditions. | |
| 3950 Also rename any existing auto save file, if it was made in this session." | |
| 3951 (let ((osave buffer-auto-save-file-name)) | |
| 3952 (setq buffer-auto-save-file-name | |
| 3953 (make-auto-save-file-name)) | |
| 3954 (if (and osave buffer-auto-save-file-name | |
| 3955 (not (string= buffer-auto-save-file-name buffer-file-name)) | |
| 3956 (not (string= buffer-auto-save-file-name osave)) | |
| 3957 (file-exists-p osave) | |
| 3958 (recent-auto-save-p)) | |
| 3959 (rename-file osave buffer-auto-save-file-name t)))) | |
| 3960 | |
| 1333 | 3961 ;; END SYNC WITH FSF 21.2. |
| 3962 | |
| 464 | 3963 ;; make-auto-save-file-name and auto-save-file-name-p are now only in |
| 3964 ;; auto-save.el. | |
| 428 | 3965 |
| 3966 | |
| 1333 | 3967 ;; BEGIN SYNC WITH FSF 21.2. |
| 3968 | |
| 428 | 3969 (defun wildcard-to-regexp (wildcard) |
| 3970 "Given a shell file name pattern WILDCARD, return an equivalent regexp. | |
| 3971 The generated regexp will match a filename iff the filename | |
| 3972 matches that wildcard according to shell rules. Only wildcards known | |
| 3973 by `sh' are supported." | |
| 3974 (let* ((i (string-match "[[.*+\\^$?]" wildcard)) | |
| 3975 ;; Copy the initial run of non-special characters. | |
| 3976 (result (substring wildcard 0 i)) | |
| 3977 (len (length wildcard))) | |
| 3978 ;; If no special characters, we're almost done. | |
| 3979 (if i | |
| 3980 (while (< i len) | |
| 3981 (let ((ch (aref wildcard i)) | |
| 3982 j) | |
| 3983 (setq | |
| 3984 result | |
| 3985 (concat result | |
| 3986 (cond | |
| 1333 | 3987 ((and (eq ch ?\[) |
| 3988 (< (1+ i) len) | |
| 3989 (eq (aref wildcard (1+ i)) ?\])) | |
| 3990 "\\[") | |
| 428 | 3991 ((eq ch ?\[) ; [...] maps to regexp char class |
| 3992 (progn | |
| 3993 (setq i (1+ i)) | |
| 3994 (concat | |
| 3995 (cond | |
| 3996 ((eq (aref wildcard i) ?!) ; [!...] -> [^...] | |
| 3997 (progn | |
| 3998 (setq i (1+ i)) | |
| 3999 (if (eq (aref wildcard i) ?\]) | |
| 4000 (progn | |
| 4001 (setq i (1+ i)) | |
| 4002 "[^]") | |
| 4003 "[^"))) | |
| 4004 ((eq (aref wildcard i) ?^) | |
| 4005 ;; Found "[^". Insert a `\0' character | |
| 4006 ;; (which cannot happen in a filename) | |
| 4007 ;; into the character class, so that `^' | |
| 4008 ;; is not the first character after `[', | |
| 4009 ;; and thus non-special in a regexp. | |
| 4010 (progn | |
| 4011 (setq i (1+ i)) | |
| 4012 "[\000^")) | |
| 4013 ((eq (aref wildcard i) ?\]) | |
| 4014 ;; I don't think `]' can appear in a | |
| 4015 ;; character class in a wildcard, but | |
| 4016 ;; let's be general here. | |
| 4017 (progn | |
| 4018 (setq i (1+ i)) | |
| 4019 "[]")) | |
| 4020 (t "[")) | |
| 4021 (prog1 ; copy everything upto next `]'. | |
| 4022 (substring wildcard | |
| 4023 i | |
| 4024 (setq j (string-match | |
| 4025 "]" wildcard i))) | |
| 4026 (setq i (if j (1- j) (1- len))))))) | |
| 4027 ((eq ch ?.) "\\.") | |
| 4028 ((eq ch ?*) "[^\000]*") | |
| 4029 ((eq ch ?+) "\\+") | |
| 4030 ((eq ch ?^) "\\^") | |
| 4031 ((eq ch ?$) "\\$") | |
| 4032 ((eq ch ?\\) "\\\\") ; probably cannot happen... | |
| 4033 ((eq ch ??) "[^\000]") | |
| 4034 (t (char-to-string ch))))) | |
| 4035 (setq i (1+ i))))) | |
| 4036 ;; Shell wildcards should match the entire filename, | |
| 4037 ;; not its part. Make the regexp say so. | |
| 4038 (concat "\\`" result "\\'"))) | |
| 4039 | |
| 4040 (defcustom list-directory-brief-switches "-CF" | |
| 4041 "*Switches for list-directory to pass to `ls' for brief listing." | |
| 4042 :type 'string | |
| 4043 :group 'dired) | |
| 4044 | |
| 4045 (defcustom list-directory-verbose-switches "-l" | |
| 4046 "*Switches for list-directory to pass to `ls' for verbose listing," | |
| 4047 :type 'string | |
| 4048 :group 'dired) | |
| 4049 | |
| 1333 | 4050 (defun file-expand-wildcards (pattern &optional full) |
| 4051 "Expand wildcard pattern PATTERN. | |
| 4052 This returns a list of file names which match the pattern. | |
| 4053 | |
| 4054 If PATTERN is written as an absolute relative file name, | |
| 4055 the values are absolute also. | |
| 4056 | |
| 4057 If PATTERN is written as a relative file name, it is interpreted | |
| 4058 relative to the current default directory, `default-directory'. | |
| 4059 The file names returned are normally also relative to the current | |
| 4060 default directory. However, if FULL is non-nil, they are absolute." | |
| 4061 (let* ((nondir (file-name-nondirectory pattern)) | |
| 4062 (dirpart (file-name-directory pattern)) | |
| 4063 ;; A list of all dirs that DIRPART specifies. | |
| 4064 ;; This can be more than one dir | |
| 4065 ;; if DIRPART contains wildcards. | |
| 4066 (dirs (if (and dirpart (string-match "[[*?]" dirpart)) | |
| 4067 (mapcar 'file-name-as-directory | |
| 4068 (file-expand-wildcards (directory-file-name dirpart))) | |
| 4069 (list dirpart))) | |
| 4070 contents) | |
| 4071 (while dirs | |
| 4072 (when (or (null (car dirs)) ; Possible if DIRPART is not wild. | |
| 4073 (file-directory-p (directory-file-name (car dirs)))) | |
| 4074 (let ((this-dir-contents | |
| 4075 ;; Filter out "." and ".." | |
| 4076 (delq nil | |
| 4077 (mapcar #'(lambda (name) | |
| 4078 (unless (string-match "\\`\\.\\.?\\'" | |
| 4079 (file-name-nondirectory name)) | |
| 4080 name)) | |
| 4081 (directory-files (or (car dirs) ".") full | |
| 4082 (wildcard-to-regexp nondir)))))) | |
| 4083 (setq contents | |
| 4084 (nconc | |
| 4085 (if (and (car dirs) (not full)) | |
| 4086 (mapcar (function (lambda (name) (concat (car dirs) name))) | |
| 4087 this-dir-contents) | |
| 4088 this-dir-contents) | |
| 4089 contents)))) | |
| 4090 (setq dirs (cdr dirs))) | |
| 4091 contents)) | |
| 4092 | |
| 428 | 4093 (defun list-directory (dirname &optional verbose) |
| 4094 "Display a list of files in or matching DIRNAME, a la `ls'. | |
| 4095 DIRNAME is globbed by the shell if necessary. | |
| 4096 Prefix arg (second arg if noninteractive) means supply -l switch to `ls'. | |
| 4097 Actions controlled by variables `list-directory-brief-switches' | |
| 4098 and `list-directory-verbose-switches'." | |
| 4099 (interactive (let ((pfx current-prefix-arg)) | |
| 4100 (list (read-file-name (if pfx (gettext "List directory (verbose): ") | |
| 4101 (gettext "List directory (brief): ")) | |
| 4102 nil default-directory nil) | |
| 4103 pfx))) | |
| 4104 (let ((switches (if verbose list-directory-verbose-switches | |
| 4105 list-directory-brief-switches))) | |
| 4106 (or dirname (setq dirname default-directory)) | |
| 4107 (setq dirname (expand-file-name dirname)) | |
| 4108 (with-output-to-temp-buffer "*Directory*" | |
| 4109 (buffer-disable-undo standard-output) | |
| 4110 (princ "Directory ") | |
| 4111 (princ dirname) | |
| 4112 (terpri) | |
| 4113 (save-excursion | |
| 4114 (set-buffer "*Directory*") | |
| 1333 | 4115 (setq default-directory |
| 4116 (if (file-directory-p dirname) | |
| 4117 (file-name-as-directory dirname) | |
| 4118 (file-name-directory dirname))) | |
| 428 | 4119 (let ((wildcard (not (file-directory-p dirname)))) |
| 4120 (insert-directory dirname switches wildcard (not wildcard))))))) | |
| 4121 | |
| 1333 | 4122 (defun shell-quote-wildcard-pattern (pattern) |
| 4123 "Quote characters special to the shell in PATTERN, leave wildcards alone. | |
| 4124 | |
| 4125 PATTERN is assumed to represent a file-name wildcard suitable for the | |
| 4126 underlying filesystem. For Unix and GNU/Linux, the characters from the | |
| 4127 set [ \\t\\n;<>&|()#$] are quoted with a backslash; for DOS/Windows, all | |
| 4128 the parts of the pattern which don't include wildcard characters are | |
| 4129 quoted with double quotes. | |
| 4130 Existing quote characters in PATTERN are left alone, so you can pass | |
| 4131 PATTERN that already quotes some of the special characters." | |
| 4132 (save-match-data | |
| 4133 (cond | |
| 4134 ((memq system-type '(ms-dos windows-nt)) | |
| 4135 ;; DOS/Windows don't allow `"' in file names. So if the | |
| 4136 ;; argument has quotes, we can safely assume it is already | |
| 4137 ;; quoted by the caller. | |
| 4138 (if (or (string-match "[\"]" pattern) | |
| 4139 ;; We quote [&()#$'] in case their shell is a port of a | |
| 4140 ;; Unixy shell. We quote [,=+] because stock DOS and | |
| 4141 ;; Windows shells require that in some cases, such as | |
| 4142 ;; passing arguments to batch files that use positional | |
| 4143 ;; arguments like %1. | |
| 4144 (not (string-match "[ \t;&()#$',=+]" pattern))) | |
| 4145 pattern | |
| 4146 (let ((result "\"") | |
| 4147 (beg 0) | |
| 4148 end) | |
| 4149 (while (string-match "[*?]+" pattern beg) | |
| 4150 (setq end (match-beginning 0) | |
| 4151 result (concat result (substring pattern beg end) | |
| 4152 "\"" | |
| 4153 (substring pattern end (match-end 0)) | |
| 4154 "\"") | |
| 4155 beg (match-end 0))) | |
| 4156 (concat result (substring pattern beg) "\"")))) | |
| 4157 (t | |
| 4158 (let ((beg 0)) | |
| 4159 (while (string-match "[ \t\n;<>&|()#$]" pattern beg) | |
| 4160 (setq pattern | |
| 4161 (concat (substring pattern 0 (match-beginning 0)) | |
| 4162 "\\" | |
| 4163 (substring pattern (match-beginning 0))) | |
| 4164 beg (1+ (match-end 0))))) | |
| 4165 pattern)))) | |
| 4166 | |
| 4167 | |
| 428 | 4168 (defvar insert-directory-program "ls" |
| 4169 "Absolute or relative name of the `ls' program used by `insert-directory'.") | |
| 4170 | |
| 4171 ;; insert-directory | |
| 4172 ;; - must insert _exactly_one_line_ describing FILE if WILDCARD and | |
| 4173 ;; FULL-DIRECTORY-P is nil. | |
| 4174 ;; The single line of output must display FILE's name as it was | |
| 4175 ;; given, namely, an absolute path name. | |
| 4176 ;; - must insert exactly one line for each file if WILDCARD or | |
| 4177 ;; FULL-DIRECTORY-P is t, plus one optional "total" line | |
| 4178 ;; before the file lines, plus optional text after the file lines. | |
| 4179 ;; Lines are delimited by "\n", so filenames containing "\n" are not | |
| 4180 ;; allowed. | |
| 4181 ;; File lines should display the basename. | |
| 4182 ;; - must be consistent with | |
| 4183 ;; - functions dired-move-to-filename, (these two define what a file line is) | |
| 4184 ;; dired-move-to-end-of-filename, | |
| 4185 ;; dired-between-files, (shortcut for (not (dired-move-to-filename))) | |
| 4186 ;; dired-insert-headerline | |
| 4187 ;; dired-after-subdir-garbage (defines what a "total" line is) | |
| 4188 ;; - variable dired-subdir-regexp | |
| 1606 | 4189 ;; - may be passed "--dired" as argument in SWITCHES. |
| 4190 ;; Filename handlers might have to remove this switch if their | |
| 4191 ;; "ls" command does not support it. | |
| 1333 | 4192 |
| 4193 ;; END SYNC WITH FSF 21.2. | |
| 4194 | |
| 2671 | 4195 (defvar insert-directory-ls-version 'unknown) |
| 4196 | |
| 428 | 4197 (defun insert-directory (file switches &optional wildcard full-directory-p) |
| 4198 "Insert directory listing for FILE, formatted according to SWITCHES. | |
| 4199 Leaves point after the inserted text. | |
| 4200 SWITCHES may be a string of options, or a list of strings. | |
| 4201 Optional third arg WILDCARD means treat FILE as shell wildcard. | |
| 4202 Optional fourth arg FULL-DIRECTORY-P means file is a directory and | |
| 4203 switches do not contain `d', so that a full listing is expected. | |
| 4204 | |
| 4205 This works by running a directory listing program | |
| 4206 whose name is in the variable `insert-directory-program'. | |
| 4207 If WILDCARD, it also runs the shell specified by `shell-file-name'." | |
| 4208 ;; We need the directory in order to find the right handler. | |
| 4209 (let ((handler (find-file-name-handler (expand-file-name file) | |
| 4210 'insert-directory))) | |
| 1606 | 4211 (cond |
| 4212 (handler | |
| 4213 (funcall handler 'insert-directory file switches | |
| 4214 wildcard full-directory-p)) | |
| 4215 ;; [mswindows-insert-directory should be called | |
| 4216 ;; nt-insert-directory - kkm]. not true any more according to | |
| 4217 ;; my new naming scheme. --ben | |
| 4218 ((and (fboundp 'mswindows-insert-directory) | |
| 4219 (eq system-type 'windows-nt)) | |
| 4220 (declare-fboundp (mswindows-insert-directory | |
| 4221 file switches wildcard full-directory-p))) | |
| 4222 (t | |
| 4223 (let* ((beg (point)) | |
|
4400
555e21a66d51
2008-01-13 Michael Sperber <mike@xemacs.org>
Mike Sperber <sperber@deinprogramm.de>
parents:
4266
diff
changeset
|
4224 ;; on Unix, assume that ls will output in what the |
|
555e21a66d51
2008-01-13 Michael Sperber <mike@xemacs.org>
Mike Sperber <sperber@deinprogramm.de>
parents:
4266
diff
changeset
|
4225 ;; file-name coding system specifies |
|
555e21a66d51
2008-01-13 Michael Sperber <mike@xemacs.org>
Mike Sperber <sperber@deinprogramm.de>
parents:
4266
diff
changeset
|
4226 (coding-system-for-read (get-coding-system 'file-name)) |
| 1606 | 4227 (result |
| 4228 (if wildcard | |
| 4229 ;; Run ls in the directory of the file pattern we asked for. | |
| 4230 (let ((default-directory | |
| 4231 (if (file-name-absolute-p file) | |
| 4232 (file-name-directory file) | |
| 4233 (file-name-directory (expand-file-name file)))) | |
| 4234 (pattern (file-name-nondirectory file)) | |
| 4235 (start 0)) | |
| 4236 ;; Quote some characters that have special meanings in shells; | |
| 4237 ;; but don't quote the wildcards--we want them to be special. | |
| 4238 ;; We also currently don't quote the quoting characters | |
| 4239 ;; in case people want to use them explicitly to quote | |
| 4240 ;; wildcard characters. | |
| 4241 ;;#### Unix-specific | |
| 4242 (while (string-match "[ \t\n;<>&|()#$]" pattern start) | |
| 4243 (setq pattern | |
| 4244 (concat (substring pattern 0 (match-beginning 0)) | |
| 4245 "\\" | |
| 4246 (substring pattern (match-beginning 0))) | |
| 4247 start (1+ (match-end 0)))) | |
| 4248 (call-process shell-file-name nil t nil | |
| 4249 "-c" (concat "\\" ;; Disregard shell aliases! | |
| 4250 insert-directory-program | |
| 4251 " -d " | |
| 4252 (if (stringp switches) | |
| 4253 switches | |
| 4254 (mapconcat 'identity switches " ")) | |
| 4255 " " | |
| 4256 pattern))) | |
| 4257 ;; SunOS 4.1.3, SVr4 and others need the "." to list the | |
| 4258 ;; directory if FILE is a symbolic link. | |
| 4259 (apply 'call-process | |
| 4260 insert-directory-program nil t nil | |
| 4261 (let (list) | |
| 4262 (if (listp switches) | |
| 4263 (setq list switches) | |
| 4264 (if (not (equal switches "")) | |
| 4265 (let ((switches switches)) | |
| 4266 ;; Split the switches at any spaces | |
| 4267 ;; so we can pass separate options as separate args. | |
| 4268 (while (string-match " " switches) | |
| 4269 (setq list (cons (substring switches 0 (match-beginning 0)) | |
| 4270 list) | |
| 4271 switches (substring switches (match-end 0)))) | |
| 4272 (setq list (cons switches list))))) | |
| 4273 (append list | |
| 4274 (list | |
| 4275 (if full-directory-p | |
| 4276 (concat (file-name-as-directory file) | |
| 4277 ;;#### Unix-specific | |
| 4278 ".") | |
| 4279 file)))))))) | |
| 2671 | 4280 |
| 4281 ;; If we got "//DIRED//" in the output, it means we got a real | |
| 4282 ;; directory listing, even if `ls' returned nonzero. | |
| 4283 ;; So ignore any errors. | |
| 4284 (when (if (stringp switches) | |
| 4285 (string-match "--dired\\>" switches) | |
| 4286 (member "--dired" switches)) | |
| 4287 (save-excursion | |
| 4288 (forward-line -2) | |
| 4289 (when (looking-at "//SUBDIRED//") | |
| 4290 (forward-line -1)) | |
| 4291 (if (looking-at "//DIRED//") | |
| 4292 (setq result 0)))) | |
| 4293 | |
| 4294 (when (and (not (eq 0 result)) | |
| 4295 (eq insert-directory-ls-version 'unknown)) | |
| 4296 ;; The first time ls returns an error, | |
| 4297 ;; find the version numbers of ls, | |
| 4298 ;; and set insert-directory-ls-version | |
| 4299 ;; to > if it is more than 5.2.1, < if it is less, nil if it | |
| 4300 ;; is equal or if the info cannot be obtained. | |
| 4301 ;; (That can mean it isn't GNU ls.) | |
| 4302 (let ((version-out | |
| 4303 (with-temp-buffer | |
| 4304 (call-process "ls" nil t nil "--version") | |
| 4305 (buffer-string)))) | |
| 4306 (if (string-match "ls (.*utils) \\([0-9.]*\\)$" version-out) | |
| 4307 (let* ((version (match-string 1 version-out)) | |
| 4308 (split (split-string version "[.]")) | |
| 4309 (numbers (mapcar 'string-to-int split)) | |
| 4310 (min '(5 2 1)) | |
| 4311 comparison) | |
| 4312 (while (and (not comparison) (or numbers min)) | |
| 4313 (cond ((null min) | |
| 4314 (setq comparison '>)) | |
| 4315 ((null numbers) | |
| 4316 (setq comparison '<)) | |
| 4317 ((> (car numbers) (car min)) | |
| 4318 (setq comparison '>)) | |
| 4319 ((< (car numbers) (car min)) | |
| 4320 (setq comparison '<)) | |
| 4321 (t | |
| 4322 (setq numbers (cdr numbers) | |
| 4323 min (cdr min))))) | |
| 4324 (setq insert-directory-ls-version (or comparison '=))) | |
| 4325 (setq insert-directory-ls-version nil)))) | |
| 4326 | |
| 4327 ;; For GNU ls versions 5.2.2 and up, ignore minor errors. | |
| 4328 (when (and (eq 1 result) (eq insert-directory-ls-version '>)) | |
| 4329 (setq result 0)) | |
| 4330 | |
| 1606 | 4331 ;; If `insert-directory-program' failed, signal an error. |
| 2671 | 4332 (unless (eq 0 result) |
| 4333 ;; Delete the error message it may have output. | |
| 4334 (delete-region beg (point)) | |
| 4335 ;; On non-Posix systems, we cannot open a directory, so | |
| 4336 ;; don't even try, because that will always result in | |
| 4337 ;; the ubiquitous "Access denied". Instead, show the | |
| 4338 ;; command line so the user can try to guess what went wrong. | |
| 4339 (if (and (file-directory-p file) | |
| 4340 (memq system-type '(ms-dos windows-nt))) | |
| 4341 (error | |
| 4342 "Reading directory: \"%s %s -- %s\" exited with status %s" | |
| 4343 insert-directory-program | |
| 4344 (if (listp switches) (concat switches) switches) | |
| 4345 file result) | |
| 4346 (error "Listing directory failed"))) | |
| 1606 | 4347 |
| 4348 (when (or (and (listp switches) | |
| 4349 (member "--dired" switches)) | |
| 4350 (string-match "--dired\\>" switches)) | |
| 4351 (forward-line -2) | |
| 4352 (when (looking-at "//SUBDIRED//") | |
| 4353 (delete-region (point) (progn (forward-line 1) (point))) | |
| 4354 (forward-line -1)) | |
| 2671 | 4355 (if (looking-at "//DIRED//") |
| 4356 (let ((end (line-end-position)) | |
| 4357 (linebeg (point)) | |
| 4358 error-lines) | |
| 4359 ;; Find all the lines that are error messages, | |
| 4360 ;; and record the bounds of each one. | |
| 4361 (goto-char beg) | |
| 4362 (while (< (point) linebeg) | |
| 4363 (or (eql (following-char) ?\s) | |
| 4364 (push (list (point) (line-end-position)) error-lines)) | |
| 4365 (forward-line 1)) | |
| 4366 (setq error-lines (nreverse error-lines)) | |
| 4367 ;; Now read the numeric positions of file names. | |
| 4368 (goto-char linebeg) | |
| 4369 (forward-word 1) | |
| 4370 (forward-char 3) | |
| 4371 (while (< (point) end) | |
| 4372 (let ((start (insert-directory-adj-pos | |
| 4373 (+ beg (read (current-buffer))) | |
| 4374 error-lines)) | |
| 4375 (end (insert-directory-adj-pos | |
| 4376 (+ beg (read (current-buffer))) | |
| 4377 error-lines))) | |
| 4378 (if (memq (char-after end) '(?\n ?\ )) | |
| 4379 ;; End is followed by \n or by " -> ". | |
| 4380 (let ((filename-extent (make-extent start end))) | |
| 4381 (set-extent-property filename-extent 'dired-file-name t) | |
| 4382 (set-extent-property filename-extent 'start-open t) | |
| 4383 (set-extent-property filename-extent 'end-open t)) | |
| 4384 ;; It seems that we can't trust ls's output as to | |
| 4385 ;; byte positions of filenames. | |
| 4386 (map-extents | |
| 4387 #'(lambda (extent maparg) | |
| 4388 (delete-extent extent) | |
| 4389 nil) | |
| 4390 nil beg (point) nil nil 'dired-file-name) | |
| 4391 (end-of-line)))) | |
| 4392 (goto-char end) | |
| 4393 (beginning-of-line) | |
| 4394 (delete-region (point) (progn (forward-line 1) (point)))) | |
| 4395 ;; Take care of the case where the ls output contains a | |
| 4396 ;; "//DIRED-OPTIONS//"-line, but no "//DIRED//"-line | |
| 4397 ;; and we went one line too far back (see above). | |
| 4398 (forward-line 1)) | |
| 4399 (if (looking-at "//DIRED-OPTIONS//") | |
| 4400 (delete-region (point) (progn (forward-line 1) (point)))))))))) | |
| 4401 | |
| 4402 (defun insert-directory-adj-pos (pos error-lines) | |
| 4403 "Convert `ls --dired' file name position value POS to a buffer position. | |
| 4404 File name position values returned in ls --dired output | |
| 4405 count only stdout; they don't count the error messages sent to stderr. | |
| 4406 So this function converts to them to real buffer positions. | |
| 4407 ERROR-LINES is a list of buffer positions of error message lines, | |
| 4408 of the form (START END)." | |
| 4409 (while (and error-lines (< (caar error-lines) pos)) | |
| 4410 (setq pos (+ pos (- (nth 1 (car error-lines)) (nth 0 (car error-lines))))) | |
| 4411 (pop error-lines)) | |
| 4412 pos) | |
| 428 | 4413 |
| 1333 | 4414 ;; BEGIN SYNC WITH FSF 21.2. |
| 4415 | |
| 4416 (defun insert-directory-safely (file switches | |
| 4417 &optional wildcard full-directory-p) | |
| 4418 "Insert directory listing for FILE, formatted according to SWITCHES. | |
| 4419 | |
| 4420 Like `insert-directory', but if FILE does not exist, it inserts a | |
| 4421 message to that effect instead of signaling an error." | |
| 4422 (if (file-exists-p file) | |
| 4423 (insert-directory file switches wildcard full-directory-p) | |
| 4424 ;; Simulate the message printed by `ls'. | |
| 4425 (insert (format "%s: No such file or directory\n" file)))) | |
| 4426 | |
| 428 | 4427 (defvar kill-emacs-query-functions nil |
| 4428 "Functions to call with no arguments to query about killing XEmacs. | |
| 4429 If any of these functions returns nil, killing Emacs is cancelled. | |
| 4430 `save-buffers-kill-emacs' (\\[save-buffers-kill-emacs]) calls these functions, | |
| 4431 but `kill-emacs', the low level primitive, does not. | |
| 4432 See also `kill-emacs-hook'.") | |
| 4433 | |
| 1333 | 4434 (defcustom confirm-kill-emacs nil |
| 4435 "How to ask for confirmation when leaving Emacs. | |
| 4436 If nil, the default, don't ask at all. If the value is non-nil, it should | |
| 4437 be a predicate function such as `yes-or-no-p'." | |
| 4438 :type '(choice (const :tag "Ask with yes-or-no-p" yes-or-no-p) | |
| 4439 (const :tag "Ask with y-or-n-p" y-or-n-p) | |
| 4440 (const :tag "Don't confirm" nil)) | |
| 4441 :group 'emacs | |
| 4442 ;:version "21.1" | |
| 4443 ) | |
| 4444 | |
| 428 | 4445 (defun save-buffers-kill-emacs (&optional arg) |
| 4446 "Offer to save each buffer, then kill this XEmacs process. | |
| 4447 With prefix arg, silently save all file-visiting buffers, then kill." | |
| 4448 (interactive "P") | |
| 4449 (save-some-buffers arg t) | |
|
5270
3acaa0fc09be
Use #'some, #'every, etc. for composing boolean operations on lists.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5249
diff
changeset
|
4450 (and (or (not (some #'(lambda (buf) |
|
3acaa0fc09be
Use #'some, #'every, etc. for composing boolean operations on lists.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5249
diff
changeset
|
4451 (and (buffer-file-name buf) |
|
3acaa0fc09be
Use #'some, #'every, etc. for composing boolean operations on lists.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5249
diff
changeset
|
4452 (buffer-modified-p buf))) |
|
3acaa0fc09be
Use #'some, #'every, etc. for composing boolean operations on lists.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5249
diff
changeset
|
4453 (buffer-list))) |
| 428 | 4454 (yes-or-no-p "Modified buffers exist; exit anyway? ")) |
| 4455 (or (not (fboundp 'process-list)) | |
| 4456 ;; process-list is not defined on VMS. | |
| 4457 (let ((processes (process-list)) | |
| 4458 active) | |
| 4459 (while processes | |
| 4460 (and (memq (process-status (car processes)) '(run stop open)) | |
| 4461 (let ((val (process-kill-without-query (car processes)))) | |
| 4462 (process-kill-without-query (car processes) val) | |
| 4463 val) | |
| 4464 (setq active t)) | |
| 4465 (setq processes (cdr processes))) | |
| 4466 (or | |
| 4467 (not active) | |
| 4468 (save-excursion | |
| 4469 (save-window-excursion | |
| 4470 (delete-other-windows) | |
| 4471 (list-processes) | |
| 4472 (yes-or-no-p | |
| 4473 "Active processes exist; kill them and exit anyway? ")))))) | |
| 4474 ;; Query the user for other things, perhaps. | |
| 4475 (run-hook-with-args-until-failure 'kill-emacs-query-functions) | |
| 1333 | 4476 (or (null confirm-kill-emacs) |
| 4477 (funcall confirm-kill-emacs "Really exit Emacs? ")) | |
| 428 | 4478 (kill-emacs))) |
| 4479 | |
| 4480 (defun symlink-expand-file-name (filename) | |
| 4481 "If FILENAME is a symlink, return its non-symlink equivalent. | |
| 4482 Unlike `file-truename', this doesn't chase symlinks in directory | |
| 4483 components of the file or expand a relative pathname into an | |
| 4484 absolute one." | |
| 4485 (let ((count 20)) | |
| 4486 (while (and (> count 0) (file-symlink-p filename)) | |
| 4487 (setq filename (file-symlink-p filename) | |
| 4488 count (1- count))) | |
| 4489 (if (> count 0) | |
| 4490 filename | |
| 4491 (error "Apparently circular symlink path")))) | |
| 4492 | |
| 4493 ;; Suggested by Michael Kifer <kifer@CS.SunySB.EDU> | |
| 4494 (defun file-remote-p (file-name) | |
| 4495 "Test whether FILE-NAME is looked for on a remote system." | |
| 776 | 4496 (cond ((not (declare-boundp allow-remote-paths)) nil) |
| 502 | 4497 ((fboundp 'ange-ftp-ftp-path) |
| 4498 (declare-fboundp (ange-ftp-ftp-path file-name))) | |
| 4499 ((fboundp 'efs-ftp-path) | |
| 4500 (declare-fboundp (efs-ftp-path file-name))) | |
| 428 | 4501 (t nil))) |
| 4502 | |
| 1333 | 4503 |
| 4504 ;; We use /: as a prefix to "quote" a file name | |
| 4505 ;; so that magic file name handlers will not apply to it. | |
| 4506 | |
| 4507 (setq file-name-handler-alist | |
| 4508 (cons '("\\`/:" . file-name-non-special) | |
| 4509 file-name-handler-alist)) | |
| 4510 | |
| 4511 ;; We depend on being the last handler on the list, | |
| 4512 ;; so that anything else which does need handling | |
| 4513 ;; has been handled already. | |
| 4514 ;; So it is safe for us to inhibit *all* magic file name handlers. | |
| 4515 | |
| 4516 (defun file-name-non-special (operation &rest arguments) | |
| 4517 (let ((file-name-handler-alist nil) | |
| 4518 (default-directory | |
| 4519 (if (eq operation 'insert-directory) | |
| 4520 (directory-file-name | |
| 4521 (expand-file-name | |
| 4522 (unhandled-file-name-directory default-directory))) | |
| 4523 default-directory)) | |
| 4524 ;; Get a list of the indices of the args which are file names. | |
| 4525 (file-arg-indices | |
| 4526 (cdr (or (assq operation | |
| 4527 ;; The first four are special because they | |
| 4528 ;; return a file name. We want to include the /: | |
| 4529 ;; in the return value. | |
| 4530 ;; So just avoid stripping it in the first place. | |
| 4531 '((expand-file-name . nil) | |
| 4532 ;; `identity' means just return the first arg | |
| 4533 ;; as stripped of its quoting. | |
| 4534 (substitute-in-file-name . identity) | |
| 4535 (file-name-directory . nil) | |
| 4536 (file-name-as-directory . nil) | |
| 4537 (directory-file-name . nil) | |
| 4538 (file-name-completion 0 1) | |
| 4539 (file-name-all-completions 0 1) | |
| 4540 (rename-file 0 1) | |
| 4541 (copy-file 0 1) | |
| 4542 (make-symbolic-link 0 1) | |
| 4543 (add-name-to-file 0 1))) | |
| 4544 ;; For all other operations, treat the first argument only | |
| 4545 ;; as the file name. | |
| 4546 '(nil 0)))) | |
| 4547 ;; Copy ARGUMENTS so we can replace elements in it. | |
| 4548 (arguments (copy-sequence arguments))) | |
| 4549 ;; Strip off the /: from the file names that have this handler. | |
| 4550 (save-match-data | |
| 4551 (while (consp file-arg-indices) | |
| 4552 (let ((pair (nthcdr (car file-arg-indices) arguments))) | |
| 4553 (and (car pair) | |
| 4554 (string-match "\\`/:" (car pair)) | |
| 4555 (setcar pair | |
|
5366
f00192e1cd49
Examining the result of #'length: `eql', not `=', it's better style & cheaper
Aidan Kehoe <kehoea@parhasard.net>
parents:
5270
diff
changeset
|
4556 (if (eql (length (car pair)) 2) |
| 1333 | 4557 "/" |
| 4558 (substring (car pair) 2))))) | |
| 4559 (setq file-arg-indices (cdr file-arg-indices)))) | |
| 4560 (if (eq file-arg-indices 'identity) | |
| 4561 (car arguments) | |
| 4562 (apply operation arguments)))) | |
| 4563 | |
| 4564 ;; END SYNC WITH FSF 21.2. | |
| 428 | 4565 |
|
5211
cdca98f2d36f
Move `default-file-system-ignore-case' to C; fix bug in directory hash tables
Aidan Kehoe <kehoea@parhasard.net>
parents:
5203
diff
changeset
|
4566 ;; XEmacs. Question; do any of the Linuxes mount Windows partitions in |
|
cdca98f2d36f
Move `default-file-system-ignore-case' to C; fix bug in directory hash tables
Aidan Kehoe <kehoea@parhasard.net>
parents:
5203
diff
changeset
|
4567 ;; a fixed place? |
|
4720
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4568 (defvar file-system-case-alist nil |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4569 "Alist to decide where file name case is significant. |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4570 |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4571 The format is ((PATTERN . VAL) ...), where PATTERN is a regular expression |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4572 matching a file name, and VAL is t if corresponding file names are |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4573 case-insensitive, nil if corresponding file names are case sensitive. Only |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4574 the first match will be used. |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4575 |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4576 This list is used by `file-system-ignore-case-p', itself used in tab |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4577 completion; see also `default-file-system-ignore-case'.") |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4578 |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4579 (defun file-system-ignore-case-p (path) |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4580 "Return t if PATH resides on a file system with case-insensitive names. |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4581 Otherwise, return nil. See `file-system-case-alist' and |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4582 `default-file-system-ignore-case'." |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4583 (check-argument-type #'stringp path) |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4584 (if file-system-case-alist |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4585 (loop |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4586 for (pattern . val) |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4587 in file-system-case-alist |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4588 do (and (string-match pattern path) (return val)) |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4589 finally (return default-file-system-ignore-case)) |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4655
diff
changeset
|
4590 default-file-system-ignore-case)) |
|
3c92890f3750
Add `file-system-ignore-case-p', use it.
Aidan Kehoe <kehoea@parhasard.net>
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4655
diff
changeset
|
4591 |
| 428 | 4592 ;;; files.el ends here |