| 1 | ;;; files.el --- file input and output commands for Emacs |
| 2 | |
| 3 | ;; Copyright (C) 1985, 1986, 1987, 1992, 1993 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Maintainer: FSF |
| 6 | |
| 7 | ;; This file is part of GNU Emacs. |
| 8 | |
| 9 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 10 | ;; it under the terms of the GNU General Public License as published by |
| 11 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 12 | ;; any later version. |
| 13 | |
| 14 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | ;; GNU General Public License for more details. |
| 18 | |
| 19 | ;; You should have received a copy of the GNU General Public License |
| 20 | ;; along with GNU Emacs; see the file COPYING. If not, write to |
| 21 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 22 | |
| 23 | ;;; Commentary: |
| 24 | |
| 25 | ;; Defines most of Emacs's file- and directory-handling functions, |
| 26 | ;; including basic file visiting, backup generation, link handling, |
| 27 | ;; ITS-id version control, load- and write-hook handling, and the like. |
| 28 | |
| 29 | ;;; Code: |
| 30 | |
| 31 | (defconst delete-auto-save-files t |
| 32 | "*Non-nil means delete a buffer's auto-save file when the buffer is saved.") |
| 33 | |
| 34 | (defconst directory-abbrev-alist |
| 35 | nil |
| 36 | "*Alist of abbreviations for file directories. |
| 37 | A list of elements of the form (FROM . TO), each meaning to replace |
| 38 | FROM with TO when it appears in a directory name. This replacement is |
| 39 | done when setting up the default directory of a newly visited file. |
| 40 | *Every* FROM string should start with `^'. |
| 41 | |
| 42 | Use this feature when you have directories which you normally refer to |
| 43 | via absolute symbolic links. Make TO the name of the link, and FROM |
| 44 | the name it is linked to.") |
| 45 | |
| 46 | ;;; Turn off backup files on VMS since it has version numbers. |
| 47 | (defconst make-backup-files (not (eq system-type 'vax-vms)) |
| 48 | "*Non-nil means make a backup of a file the first time it is saved. |
| 49 | This can be done by renaming the file or by copying. |
| 50 | |
| 51 | Renaming means that Emacs renames the existing file so that it is a |
| 52 | backup file, then writes the buffer into a new file. Any other names |
| 53 | that the old file had will now refer to the backup file. The new file |
| 54 | is owned by you and its group is defaulted. |
| 55 | |
| 56 | Copying means that Emacs copies the existing file into the backup |
| 57 | file, then writes the buffer on top of the existing file. Any other |
| 58 | names that the old file had will now refer to the new (edited) file. |
| 59 | The file's owner and group are unchanged. |
| 60 | |
| 61 | The choice of renaming or copying is controlled by the variables |
| 62 | `backup-by-copying', `backup-by-copying-when-linked' and |
| 63 | `backup-by-copying-when-mismatch'.") |
| 64 | |
| 65 | ;; Do this so that local variables based on the file name |
| 66 | ;; are not overridden by the major mode. |
| 67 | (defvar backup-inhibited nil |
| 68 | "Non-nil means don't make a backup file for this buffer.") |
| 69 | (put 'backup-inhibited 'permanent-local t) |
| 70 | |
| 71 | (defconst backup-by-copying nil |
| 72 | "*Non-nil means always use copying to create backup files. |
| 73 | See documentation of variable `make-backup-files'.") |
| 74 | |
| 75 | (defconst backup-by-copying-when-linked nil |
| 76 | "*Non-nil means use copying to create backups for files with multiple names. |
| 77 | This causes the alternate names to refer to the latest version as edited. |
| 78 | This variable is relevant only if `backup-by-copying' is nil.") |
| 79 | |
| 80 | (defconst backup-by-copying-when-mismatch nil |
| 81 | "*Non-nil means create backups by copying if this preserves owner or group. |
| 82 | Renaming may still be used (subject to control of other variables) |
| 83 | when it would not result in changing the owner or group of the file; |
| 84 | that is, for files which are owned by you and whose group matches |
| 85 | the default for a new file created there by you. |
| 86 | This variable is relevant only if `backup-by-copying' is nil.") |
| 87 | |
| 88 | (defvar backup-enable-predicate |
| 89 | '(lambda (name) |
| 90 | (or (< (length name) 5) |
| 91 | (not (string-equal "/tmp/" (substring name 0 5))))) |
| 92 | "Predicate that looks at a file name and decides whether to make backups. |
| 93 | Called with an absolute file name as argument, it returns t to enable backup.") |
| 94 | |
| 95 | (defconst buffer-offer-save nil |
| 96 | "*Non-nil in a buffer means offer to save the buffer on exit |
| 97 | even if the buffer is not visiting a file. |
| 98 | Automatically local in all buffers.") |
| 99 | (make-variable-buffer-local 'buffer-offer-save) |
| 100 | |
| 101 | (defconst find-file-existing-other-name nil |
| 102 | "*Non-nil means find a file under alternative names, in existing buffers. |
| 103 | This means if any existing buffer is visiting the file you want |
| 104 | under another name, you get the existing buffer instead of a new buffer.") |
| 105 | |
| 106 | (defconst find-file-visit-truename nil |
| 107 | "*Non-nil means visit a file under its truename. |
| 108 | The truename of a file is found by chasing all links |
| 109 | both at the file level and at the levels of the containing directories.") |
| 110 | |
| 111 | (defvar buffer-file-truename nil |
| 112 | "The truename of the file visited in the current buffer. |
| 113 | This variable is automatically local in all buffers, when non-nil.") |
| 114 | (make-variable-buffer-local 'buffer-file-truename) |
| 115 | (put 'buffer-file-truename 'permanent-local t) |
| 116 | |
| 117 | (defvar buffer-file-number nil |
| 118 | "The device number and file number of the file visited in the current buffer. |
| 119 | The value is a list of the form (FILENUM DEVNUM). |
| 120 | This pair of numbers uniquely identifies the file. |
| 121 | If the buffer is visiting a new file, the value is nil.") |
| 122 | (make-variable-buffer-local 'buffer-file-number) |
| 123 | (put 'buffer-file-number 'permanent-local t) |
| 124 | |
| 125 | (defconst file-precious-flag nil |
| 126 | "*Non-nil means protect against I/O errors while saving files. |
| 127 | Some modes set this non-nil in particular buffers.") |
| 128 | |
| 129 | (defvar version-control nil |
| 130 | "*Control use of version numbers for backup files. |
| 131 | t means make numeric backup versions unconditionally. |
| 132 | nil means make them for files that have some already. |
| 133 | never means do not make them.") |
| 134 | |
| 135 | (defvar dired-kept-versions 2 |
| 136 | "*When cleaning directory, number of versions to keep.") |
| 137 | |
| 138 | (defvar trim-versions-without-asking nil |
| 139 | "*If t, deletes excess backup versions silently. |
| 140 | If nil, asks confirmation. Any other value prevents any trimming.") |
| 141 | |
| 142 | (defvar kept-old-versions 2 |
| 143 | "*Number of oldest versions to keep when a new numbered backup is made.") |
| 144 | |
| 145 | (defvar kept-new-versions 2 |
| 146 | "*Number of newest versions to keep when a new numbered backup is made. |
| 147 | Includes the new backup. Must be > 0") |
| 148 | |
| 149 | (defconst require-final-newline nil |
| 150 | "*Value of t says silently ensure a file ends in a newline when it is saved. |
| 151 | Non-nil but not t says ask user whether to add a newline when there isn't one. |
| 152 | nil means don't add newlines.") |
| 153 | |
| 154 | (defconst auto-save-default t |
| 155 | "*Non-nil says by default do auto-saving of every file-visiting buffer.") |
| 156 | |
| 157 | (defconst auto-save-visited-file-name nil |
| 158 | "*Non-nil says auto-save a buffer in the file it is visiting, when practical. |
| 159 | Normally auto-save files are written under other names.") |
| 160 | |
| 161 | (defconst save-abbrevs nil |
| 162 | "*Non-nil means save word abbrevs too when files are saved. |
| 163 | Loading an abbrev file sets this to t.") |
| 164 | |
| 165 | (defconst find-file-run-dired t |
| 166 | "*Non-nil says run dired if `find-file' is given the name of a directory.") |
| 167 | |
| 168 | ;;;It is not useful to make this a local variable. |
| 169 | ;;;(put 'find-file-not-found-hooks 'permanent-local t) |
| 170 | (defvar find-file-not-found-hooks nil |
| 171 | "List of functions to be called for `find-file' on nonexistent file. |
| 172 | These functions are called as soon as the error is detected. |
| 173 | `buffer-file-name' is already set up. |
| 174 | The functions are called in the order given until one of them returns non-nil.") |
| 175 | |
| 176 | ;;;It is not useful to make this a local variable. |
| 177 | ;;;(put 'find-file-hooks 'permanent-local t) |
| 178 | (defvar find-file-hooks nil |
| 179 | "List of functions to be called after a buffer is loaded from a file. |
| 180 | The buffer's local variables (if any) will have been processed before the |
| 181 | functions are called.") |
| 182 | |
| 183 | ;;; In case someone does make it local. |
| 184 | (put 'write-file-hooks 'permanent-local t) |
| 185 | (defvar write-file-hooks nil |
| 186 | "List of functions to be called before writing out a buffer to a file. |
| 187 | If one of them returns non-nil, the file is considered already written |
| 188 | and the rest are not called. |
| 189 | These hooks are considered to pertain to the visited file. |
| 190 | So this list is cleared if you change the visited file name. |
| 191 | See also `write-contents-hooks'. |
| 192 | Don't make this variable buffer-local; instead, use `local-write-file-hooks'.") |
| 193 | |
| 194 | (put 'local-write-file-hooks 'permanent-local t) |
| 195 | (defvar local-write-file-hooks nil |
| 196 | "Just like `write-file-hooks', except intended for per-buffer use. |
| 197 | The functions in this list are called before the ones in |
| 198 | `write-file-hooks'.") |
| 199 | |
| 200 | (defvar write-contents-hooks nil |
| 201 | "List of functions to be called before writing out a buffer to a file. |
| 202 | If one of them returns non-nil, the file is considered already written |
| 203 | and the rest are not called. |
| 204 | These hooks are considered to pertain to the buffer's contents, |
| 205 | not to the particular visited file; thus, `set-visited-file-name' does |
| 206 | not clear this variable, but changing the major mode does clear it. |
| 207 | See also `write-file-hooks'.") |
| 208 | |
| 209 | (defconst enable-local-variables t |
| 210 | "*Control use of local-variables lists in files you visit. |
| 211 | The value can be t, nil or something else. |
| 212 | A value of t means local-variables lists are obeyed; |
| 213 | nil means they are ignored; anything else means query. |
| 214 | |
| 215 | The command \\[normal-mode] always obeys local-variables lists |
| 216 | and ignores this variable.") |
| 217 | |
| 218 | (defconst enable-local-eval 'maybe |
| 219 | "*Control processing of the \"variable\" `eval' in a file's local variables. |
| 220 | The value can be t, nil or something else. |
| 221 | A value of t means obey `eval' variables; |
| 222 | nil means ignore them; anything else means query. |
| 223 | |
| 224 | The command \\[normal-mode] always obeys local-variables lists |
| 225 | and ignores this variable.") |
| 226 | |
| 227 | ;; Avoid losing in versions where CLASH_DETECTION is disabled. |
| 228 | (or (fboundp 'lock-buffer) |
| 229 | (defalias 'lock-buffer 'ignore)) |
| 230 | (or (fboundp 'unlock-buffer) |
| 231 | (defalias 'unlock-buffer 'ignore)) |
| 232 | \f |
| 233 | (defun pwd () |
| 234 | "Show the current default directory." |
| 235 | (interactive nil) |
| 236 | (message "Directory %s" default-directory)) |
| 237 | |
| 238 | (defvar cd-path nil |
| 239 | "Value of the CDPATH environment variable, as a list. |
| 240 | Not actually set up until the first time you you use it.") |
| 241 | |
| 242 | (defun parse-colon-path (cd-path) |
| 243 | "Explode a colon-separated list of paths into a string list." |
| 244 | (and cd-path |
| 245 | (let (cd-prefix cd-list (cd-start 0) cd-colon) |
| 246 | (setq cd-path (concat cd-path ":")) |
| 247 | (while (setq cd-colon (string-match ":" cd-path cd-start)) |
| 248 | (setq cd-list |
| 249 | (nconc cd-list |
| 250 | (list (substitute-in-file-name |
| 251 | (file-name-as-directory |
| 252 | (substring cd-path cd-start cd-colon)))))) |
| 253 | (setq cd-start (+ cd-colon 1))) |
| 254 | cd-list))) |
| 255 | |
| 256 | (defun cd-absolute (dir) |
| 257 | "Change current directory to given absolute file name DIR." |
| 258 | (setq dir (expand-file-name dir)) |
| 259 | (if (not (eq system-type 'vax-vms)) |
| 260 | (setq dir (file-name-as-directory dir))) |
| 261 | (if (not (file-directory-p dir)) |
| 262 | (error "%s is not a directory" dir) |
| 263 | (if (file-executable-p dir) |
| 264 | (setq default-directory dir) |
| 265 | (error "Cannot cd to %s: Permission denied" dir)))) |
| 266 | |
| 267 | (defun cd (dir) |
| 268 | "Make DIR become the current buffer's default directory. |
| 269 | If your environment includes a `CDPATH' variable, try each one of that |
| 270 | colon-separated list of directories when resolving a relative directory name." |
| 271 | (interactive "FChange default directory: ") |
| 272 | (if (file-name-absolute-p dir) |
| 273 | (cd-absolute (expand-file-name dir)) |
| 274 | (if (null cd-path) |
| 275 | (let ((trypath (parse-colon-path (getenv "CDPATH")))) |
| 276 | (setq cd-path (or trypath (list "./"))))) |
| 277 | (if (not (catch 'found |
| 278 | (mapcar |
| 279 | (function (lambda (x) |
| 280 | (let ((f (expand-file-name (concat x dir)))) |
| 281 | (if (file-directory-p f) |
| 282 | (progn |
| 283 | (cd-absolute f) |
| 284 | (throw 'found t)))))) |
| 285 | cd-path) |
| 286 | nil)) |
| 287 | (error "No such directory found via CDPATH environment variable")))) |
| 288 | |
| 289 | (defun load-file (file) |
| 290 | "Load the Lisp file named FILE." |
| 291 | (interactive "fLoad file: ") |
| 292 | (load (expand-file-name file) nil nil t)) |
| 293 | |
| 294 | (defun load-library (library) |
| 295 | "Load the library named LIBRARY. |
| 296 | This is an interface to the function `load'." |
| 297 | (interactive "sLoad library: ") |
| 298 | (load library)) |
| 299 | |
| 300 | ;; OTHER is the other file to be compared. |
| 301 | (defun file-local-copy (file) |
| 302 | "Copy the file FILE into a temporary file on this machine. |
| 303 | Returns the name of the local copy, or nil, if FILE is directly |
| 304 | accessible." |
| 305 | (let ((handler (find-file-name-handler file))) |
| 306 | (if handler |
| 307 | (funcall handler 'file-local-copy file) |
| 308 | nil))) |
| 309 | |
| 310 | (defun file-truename (filename) |
| 311 | "Return the truename of FILENAME, which should be absolute. |
| 312 | The truename of a file name is found by chasing symbolic links |
| 313 | both at the level of the file and at the level of the directories |
| 314 | containing it, until no links are left at any level." |
| 315 | (if (string= filename "~") |
| 316 | (progn |
| 317 | (setq filename (expand-file-name filename)) |
| 318 | (if (string= filename "") |
| 319 | (setq filename "/")))) |
| 320 | (let ((handler (find-file-name-handler filename))) |
| 321 | ;; For file name that has a special handler, call handler. |
| 322 | ;; This is so that ange-ftp can save time by doing a no-op. |
| 323 | (if handler |
| 324 | (funcall handler 'file-truename filename) |
| 325 | (let ((dir (file-name-directory filename)) |
| 326 | target dirfile) |
| 327 | ;; Get the truename of the directory. |
| 328 | (setq dirfile (directory-file-name dir)) |
| 329 | ;; If these are equal, we have the (or a) root directory. |
| 330 | (or (string= dir dirfile) |
| 331 | (setq dir (file-name-as-directory (file-truename dirfile)))) |
| 332 | (if (equal ".." (file-name-nondirectory filename)) |
| 333 | (directory-file-name (file-name-directory (directory-file-name dir))) |
| 334 | (if (equal "." (file-name-nondirectory filename)) |
| 335 | (directory-file-name dir) |
| 336 | ;; Put it back on the file name. |
| 337 | (setq filename (concat dir (file-name-nondirectory filename))) |
| 338 | ;; Is the file name the name of a link? |
| 339 | (setq target (file-symlink-p filename)) |
| 340 | (if target |
| 341 | ;; Yes => chase that link, then start all over |
| 342 | ;; since the link may point to a directory name that uses links. |
| 343 | ;; We can't safely use expand-file-name here |
| 344 | ;; since target might look like foo/../bar where foo |
| 345 | ;; is itself a link. Instead, we handle . and .. above. |
| 346 | (if (file-name-absolute-p target) |
| 347 | (file-truename target) |
| 348 | (file-truename (concat dir target))) |
| 349 | ;; No, we are done! |
| 350 | filename))))))) |
| 351 | |
| 352 | (defun file-chase-links (filename) |
| 353 | "Chase links in FILENAME until a name that is not a link. |
| 354 | Does not examine containing directories for links, |
| 355 | unlike `file-truename'." |
| 356 | (let (tem (count 100) (newname filename)) |
| 357 | (while (setq tem (file-symlink-p newname)) |
| 358 | (if (= count 0) |
| 359 | (error "Apparent cycle of symbolic links for %s" filename)) |
| 360 | ;; Handle `..' by hand, since it needs to work in the |
| 361 | ;; target of any directory symlink. |
| 362 | ;; This code is not quite complete; it does not handle |
| 363 | ;; embedded .. in some cases such as ./../foo and foo/bar/../../../lose. |
| 364 | (while (string-match "\\.\\./" tem) |
| 365 | (setq tem (substring tem 3)) |
| 366 | (setq newname (file-name-as-directory |
| 367 | ;; Do the .. by hand. |
| 368 | (directory-file-name |
| 369 | (file-name-directory |
| 370 | ;; Chase links in the default dir of the symlink. |
| 371 | (file-chase-links |
| 372 | (directory-file-name |
| 373 | (file-name-directory newname)))))))) |
| 374 | (setq newname (expand-file-name tem (file-name-directory newname))) |
| 375 | (setq count (1- count))) |
| 376 | newname)) |
| 377 | \f |
| 378 | (defun switch-to-buffer-other-window (buffer) |
| 379 | "Select buffer BUFFER in another window." |
| 380 | (interactive "BSwitch to buffer in other window: ") |
| 381 | (let ((pop-up-windows t)) |
| 382 | (pop-to-buffer buffer t))) |
| 383 | |
| 384 | (defun switch-to-buffer-other-frame (buffer) |
| 385 | "Switch to buffer BUFFER in another frame." |
| 386 | (interactive "BSwitch to buffer in other frame: ") |
| 387 | (let ((pop-up-frames t)) |
| 388 | (pop-to-buffer buffer t))) |
| 389 | |
| 390 | (defun find-file (filename) |
| 391 | "Edit file FILENAME. |
| 392 | Switch to a buffer visiting file FILENAME, |
| 393 | creating one if none already exists." |
| 394 | (interactive "FFind file: ") |
| 395 | (switch-to-buffer (find-file-noselect filename))) |
| 396 | |
| 397 | (defun find-file-other-window (filename) |
| 398 | "Edit file FILENAME, in another window. |
| 399 | May create a new window, or reuse an existing one. |
| 400 | See the function `display-buffer'." |
| 401 | (interactive "FFind file in other window: ") |
| 402 | (switch-to-buffer-other-window (find-file-noselect filename))) |
| 403 | |
| 404 | (defun find-file-other-frame (filename) |
| 405 | "Edit file FILENAME, in another frame. |
| 406 | May create a new frame, or reuse an existing one. |
| 407 | See the function `display-buffer'." |
| 408 | (interactive "FFind file in other frame: ") |
| 409 | (switch-to-buffer-other-frame (find-file-noselect filename))) |
| 410 | |
| 411 | (defun find-file-read-only (filename) |
| 412 | "Edit file FILENAME but don't allow changes. |
| 413 | Like \\[find-file] but marks buffer as read-only. |
| 414 | Use \\[toggle-read-only] to permit editing." |
| 415 | (interactive "fFind file read-only: ") |
| 416 | (find-file filename) |
| 417 | (setq buffer-read-only t) |
| 418 | (current-buffer)) |
| 419 | |
| 420 | (defun find-file-read-only-other-window (filename) |
| 421 | "Edit file FILENAME in another window but don't allow changes. |
| 422 | Like \\[find-file-other-window] but marks buffer as read-only. |
| 423 | Use \\[toggle-read-only] to permit editing." |
| 424 | (interactive "fFind file read-only other window: ") |
| 425 | (find-file-other-window filename) |
| 426 | (setq buffer-read-only t) |
| 427 | (current-buffer)) |
| 428 | |
| 429 | (defun find-file-read-only-other-frame (filename) |
| 430 | "Edit file FILENAME in another frame but don't allow changes. |
| 431 | Like \\[find-file-other-frame] but marks buffer as read-only. |
| 432 | Use \\[toggle-read-only] to permit editing." |
| 433 | (interactive "fFind file read-only other frame: ") |
| 434 | (find-file-other-frame filename) |
| 435 | (setq buffer-read-only t) |
| 436 | (current-buffer)) |
| 437 | |
| 438 | (defun find-alternate-file (filename) |
| 439 | "Find file FILENAME, select its buffer, kill previous buffer. |
| 440 | If the current buffer now contains an empty file that you just visited |
| 441 | \(presumably by mistake), use this command to visit the file you really want." |
| 442 | (interactive |
| 443 | (let ((file buffer-file-name) |
| 444 | (file-name nil) |
| 445 | (file-dir nil)) |
| 446 | (and file |
| 447 | (setq file-name (file-name-nondirectory file) |
| 448 | file-dir (file-name-directory file))) |
| 449 | (list (read-file-name |
| 450 | "Find alternate file: " file-dir nil nil file-name)))) |
| 451 | (and (buffer-modified-p) |
| 452 | ;; (not buffer-read-only) |
| 453 | (not (yes-or-no-p (format "Buffer %s is modified; kill anyway? " |
| 454 | (buffer-name)))) |
| 455 | (error "Aborted")) |
| 456 | (let ((obuf (current-buffer)) |
| 457 | (ofile buffer-file-name) |
| 458 | (onum buffer-file-number) |
| 459 | (otrue buffer-file-truename) |
| 460 | (oname (buffer-name))) |
| 461 | (rename-buffer " **lose**") |
| 462 | (setq buffer-file-name nil) |
| 463 | (setq buffer-file-number nil) |
| 464 | (setq buffer-file-truename nil) |
| 465 | (unwind-protect |
| 466 | (progn |
| 467 | (unlock-buffer) |
| 468 | (find-file filename)) |
| 469 | (cond ((eq obuf (current-buffer)) |
| 470 | (setq buffer-file-name ofile) |
| 471 | (setq buffer-file-number onum) |
| 472 | (setq buffer-file-truename otrue) |
| 473 | (lock-buffer) |
| 474 | (rename-buffer oname)))) |
| 475 | (or (eq (current-buffer) obuf) |
| 476 | (kill-buffer obuf)))) |
| 477 | |
| 478 | (defun create-file-buffer (filename) |
| 479 | "Create a suitably named buffer for visiting FILENAME, and return it. |
| 480 | FILENAME (sans directory) is used unchanged if that name is free; |
| 481 | otherwise a string <2> or <3> or ... is appended to get an unused name." |
| 482 | (let ((lastname (file-name-nondirectory filename))) |
| 483 | (if (string= lastname "") |
| 484 | (setq lastname filename)) |
| 485 | (generate-new-buffer lastname))) |
| 486 | |
| 487 | (defun generate-new-buffer (name) |
| 488 | "Create and return a buffer with a name based on NAME. |
| 489 | Choose the buffer's name using `generate-new-buffer-name'." |
| 490 | (get-buffer-create (generate-new-buffer-name name))) |
| 491 | |
| 492 | (defconst automount-dir-prefix "^/tmp_mnt/" |
| 493 | "Regexp to match the automounter prefix in a directory name.") |
| 494 | |
| 495 | (defvar abbreviated-home-dir nil |
| 496 | "The the user's homedir abbreviated according to `directory-abbrev-list'.") |
| 497 | |
| 498 | (defun abbreviate-file-name (filename) |
| 499 | "Return a version of FILENAME shortened using `directory-abbrev-alist'. |
| 500 | This also substitutes \"~\" for the user's home directory. |
| 501 | Type \\[describe-variable] directory-abbrev-alist RET for more information." |
| 502 | ;; Get rid of the prefixes added by the automounter. |
| 503 | (if (and (string-match automount-dir-prefix filename) |
| 504 | (file-exists-p (file-name-directory |
| 505 | (substring filename (1- (match-end 0)))))) |
| 506 | (setq filename (substring filename (1- (match-end 0))))) |
| 507 | (let ((tail directory-abbrev-alist)) |
| 508 | ;; If any elt of directory-abbrev-alist matches this name, |
| 509 | ;; abbreviate accordingly. |
| 510 | (while tail |
| 511 | (if (string-match (car (car tail)) filename) |
| 512 | (setq filename |
| 513 | (concat (cdr (car tail)) (substring filename (match-end 0))))) |
| 514 | (setq tail (cdr tail))) |
| 515 | ;; Compute and save the abbreviated homedir name. |
| 516 | ;; We defer computing this until the first time it's needed, to |
| 517 | ;; give time for directory-abbrev-alist to be set properly. |
| 518 | ;; We include a slash at the end, to avoid spurious matches |
| 519 | ;; such as `/usr/foobar' when the home dir is `/usr/foo'. |
| 520 | (or abbreviated-home-dir |
| 521 | (setq abbreviated-home-dir |
| 522 | (let ((abbreviated-home-dir "$foo")) |
| 523 | (concat "^" (abbreviate-file-name (expand-file-name "~/")))))) |
| 524 | ;; If FILENAME starts with the abbreviated homedir, |
| 525 | ;; make it start with `~' instead. |
| 526 | (if (string-match abbreviated-home-dir filename) |
| 527 | (setq filename |
| 528 | (concat "~" |
| 529 | ;; If abbreviated-home-dir ends with a slash, |
| 530 | ;; don't remove the corresponding slash from |
| 531 | ;; filename. On MS-DOS and OS/2, you can have |
| 532 | ;; home directories like "g:/", in which it is |
| 533 | ;; important not to remove the slash. And what |
| 534 | ;; about poor root on Unix systems? |
| 535 | (if (eq ?/ (aref abbreviated-home-dir |
| 536 | (1- (length abbreviated-home-dir)))) |
| 537 | "/" |
| 538 | "") |
| 539 | (substring filename (match-end 0))))) |
| 540 | filename)) |
| 541 | |
| 542 | (defvar find-file-not-true-dirname-list nil |
| 543 | "*List of logical names for which visiting shouldn't save the true dirname. |
| 544 | On VMS, when you visit a file using a logical name that searches a path, |
| 545 | you may or may not want the visited file name to record the specific |
| 546 | directory where the file was found. If you *do not* want that, add the logical |
| 547 | name to this list as a string.") |
| 548 | |
| 549 | (defun find-file-noselect (filename &optional nowarn) |
| 550 | "Read file FILENAME into a buffer and return the buffer. |
| 551 | If a buffer exists visiting FILENAME, return that one, but |
| 552 | verify that the file has not changed since visited or saved. |
| 553 | The buffer is not selected, just returned to the caller." |
| 554 | (setq filename |
| 555 | (abbreviate-file-name |
| 556 | (expand-file-name filename))) |
| 557 | (if (file-directory-p filename) |
| 558 | (if find-file-run-dired |
| 559 | (dired-noselect filename) |
| 560 | (error "%s is a directory." filename)) |
| 561 | (let* ((buf (get-file-buffer filename)) |
| 562 | (truename (abbreviate-file-name (file-truename filename))) |
| 563 | (number (nthcdr 10 (file-attributes truename))) |
| 564 | ;; Find any buffer for a file which has same truename. |
| 565 | (same-truename |
| 566 | (or buf ; Shortcut |
| 567 | (let (found |
| 568 | (list (buffer-list))) |
| 569 | (while (and (not found) list) |
| 570 | (save-excursion |
| 571 | (set-buffer (car list)) |
| 572 | (if (and buffer-file-name |
| 573 | (string= buffer-file-truename truename)) |
| 574 | (setq found (car list)))) |
| 575 | (setq list (cdr list))) |
| 576 | found))) |
| 577 | (same-number |
| 578 | (or buf ; Shortcut |
| 579 | (and number |
| 580 | (let (found |
| 581 | (list (buffer-list))) |
| 582 | (while (and (not found) list) |
| 583 | (save-excursion |
| 584 | (set-buffer (car list)) |
| 585 | (if (and (equal buffer-file-number number) |
| 586 | ;; Verify this buffer's file number |
| 587 | ;; still belongs to its file. |
| 588 | (file-exists-p buffer-file-name) |
| 589 | (equal (nthcdr 10 (file-attributes buffer-file-name)) number)) |
| 590 | (setq found (car list)))) |
| 591 | (setq list (cdr list))) |
| 592 | found)))) |
| 593 | error) |
| 594 | ;; Let user know if there is a buffer with the same truename. |
| 595 | (if (and (not buf) same-truename (not nowarn)) |
| 596 | (message "%s and %s are the same file (%s)" |
| 597 | filename (buffer-file-name same-truename) |
| 598 | truename) |
| 599 | (if (and (not buf) same-number (not nowarn)) |
| 600 | (message "%s and %s are the same file" |
| 601 | filename (buffer-file-name same-number)))) |
| 602 | |
| 603 | ;; Optionally also find that buffer. |
| 604 | (if (or find-file-existing-other-name find-file-visit-truename) |
| 605 | (setq buf (or same-truename same-number))) |
| 606 | (if buf |
| 607 | (or nowarn |
| 608 | (verify-visited-file-modtime buf) |
| 609 | (cond ((not (file-exists-p filename)) |
| 610 | (error "File %s no longer exists!" filename)) |
| 611 | ((yes-or-no-p |
| 612 | (format |
| 613 | (if (buffer-modified-p buf) |
| 614 | "File %s changed on disk. Discard your edits? " |
| 615 | "File %s changed on disk. Read the new version? ") |
| 616 | (file-name-nondirectory filename))) |
| 617 | (save-excursion |
| 618 | (set-buffer buf) |
| 619 | (revert-buffer t t))))) |
| 620 | (save-excursion |
| 621 | ;;; The truename stuff makes this obsolete. |
| 622 | ;;; (let* ((link-name (car (file-attributes filename))) |
| 623 | ;;; (linked-buf (and (stringp link-name) |
| 624 | ;;; (get-file-buffer link-name)))) |
| 625 | ;;; (if (bufferp linked-buf) |
| 626 | ;;; (message "Symbolic link to file in buffer %s" |
| 627 | ;;; (buffer-name linked-buf)))) |
| 628 | (setq buf (create-file-buffer filename)) |
| 629 | (set-buffer buf) |
| 630 | (erase-buffer) |
| 631 | (condition-case () |
| 632 | (insert-file-contents filename t) |
| 633 | (file-error |
| 634 | (setq error t) |
| 635 | ;; Run find-file-not-found-hooks until one returns non-nil. |
| 636 | (let ((hooks find-file-not-found-hooks)) |
| 637 | (while (and hooks |
| 638 | (not (funcall (car hooks)))) |
| 639 | (setq hooks (cdr hooks)))))) |
| 640 | ;; Find the file's truename, and maybe use that as visited name. |
| 641 | (setq buffer-file-truename (abbreviate-file-name truename)) |
| 642 | (setq buffer-file-number number) |
| 643 | ;; On VMS, we may want to remember which directory in a search list |
| 644 | ;; the file was found in. |
| 645 | (and (eq system-type 'vax-vms) |
| 646 | (let (logical) |
| 647 | (if (string-match ":" (file-name-directory filename)) |
| 648 | (setq logical (substring (file-name-directory filename) |
| 649 | 0 (match-beginning 0)))) |
| 650 | (not (member logical find-file-not-true-dirname-list))) |
| 651 | (setq buffer-file-name buffer-file-truename)) |
| 652 | (if find-file-visit-truename |
| 653 | (setq buffer-file-name |
| 654 | (setq filename |
| 655 | (expand-file-name buffer-file-truename)))) |
| 656 | ;; Set buffer's default directory to that of the file. |
| 657 | (setq default-directory (file-name-directory filename)) |
| 658 | ;; Turn off backup files for certain file names. Since |
| 659 | ;; this is a permanent local, the major mode won't eliminate it. |
| 660 | (and (not (funcall backup-enable-predicate buffer-file-name)) |
| 661 | (progn |
| 662 | (make-local-variable 'backup-inhibited) |
| 663 | (setq backup-inhibited t))) |
| 664 | (after-find-file error (not nowarn)))) |
| 665 | buf))) |
| 666 | \f |
| 667 | (defun after-find-file (&optional error warn noauto) |
| 668 | "Called after finding a file and by the default revert function. |
| 669 | Sets buffer mode, parses local variables. |
| 670 | Optional args ERROR, WARN, and NOAUTO: ERROR non-nil means there was an |
| 671 | error in reading the file. WARN non-nil means warn if there |
| 672 | exists an auto-save file more recent than the visited file. |
| 673 | NOAUTO means don't mess with auto-save mode. |
| 674 | Finishes by calling the functions in `find-file-hooks'." |
| 675 | (setq buffer-read-only (not (file-writable-p buffer-file-name))) |
| 676 | (if noninteractive |
| 677 | nil |
| 678 | (let* (not-serious |
| 679 | (msg |
| 680 | (cond ((and error (file-attributes buffer-file-name)) |
| 681 | (setq buffer-read-only t) |
| 682 | "File exists, but is read-protected.") |
| 683 | ((not buffer-read-only) |
| 684 | (if (and warn |
| 685 | (file-newer-than-file-p (make-auto-save-file-name) |
| 686 | buffer-file-name)) |
| 687 | "Auto save file is newer; consider M-x recover-file" |
| 688 | (setq not-serious t) |
| 689 | (if error "(New file)" nil))) |
| 690 | ((not error) |
| 691 | (setq not-serious t) |
| 692 | "Note: file is write protected") |
| 693 | ((file-attributes (directory-file-name default-directory)) |
| 694 | "File not found and directory write-protected") |
| 695 | ((file-exists-p (file-name-directory buffer-file-name)) |
| 696 | (setq buffer-read-only nil)) |
| 697 | (t |
| 698 | (setq buffer-read-only nil) |
| 699 | (if (file-exists-p (file-name-directory (directory-file-name (file-name-directory buffer-file-name)))) |
| 700 | "Use M-x make-dir RET RET to create the directory" |
| 701 | "Use C-u M-x make-dir RET RET to create directory and its parents"))))) |
| 702 | (if msg |
| 703 | (progn |
| 704 | (message msg) |
| 705 | (or not-serious (sit-for 1 nil t))))) |
| 706 | (if (and auto-save-default (not noauto)) |
| 707 | (auto-save-mode t))) |
| 708 | (normal-mode t) |
| 709 | (mapcar 'funcall find-file-hooks)) |
| 710 | |
| 711 | (defun normal-mode (&optional find-file) |
| 712 | "Choose the major mode for this buffer automatically. |
| 713 | Also sets up any specified local variables of the file. |
| 714 | Uses the visited file name, the -*- line, and the local variables spec. |
| 715 | |
| 716 | This function is called automatically from `find-file'. In that case, |
| 717 | we may set up specified local variables depending on the value of |
| 718 | `enable-local-variables': if it is t, we do; if it is nil, we don't; |
| 719 | otherwise, we query. `enable-local-variables' is ignored if you |
| 720 | run `normal-mode' explicitly." |
| 721 | (interactive) |
| 722 | (or find-file (funcall (or default-major-mode 'fundamental-mode))) |
| 723 | (condition-case err |
| 724 | (set-auto-mode) |
| 725 | (error (message "File mode specification error: %s" |
| 726 | (prin1-to-string err)))) |
| 727 | (condition-case err |
| 728 | (let ((enable-local-variables (or (not find-file) |
| 729 | enable-local-variables))) |
| 730 | (hack-local-variables)) |
| 731 | (error (message "File local-variables error: %s" |
| 732 | (prin1-to-string err))))) |
| 733 | |
| 734 | (defvar auto-mode-alist (mapcar 'purecopy |
| 735 | '(("\\.text\\'" . text-mode) |
| 736 | ("\\.c\\'" . c-mode) |
| 737 | ("\\.h\\'" . c-mode) |
| 738 | ("\\.tex\\'" . TeX-mode) |
| 739 | ("\\.ltx\\'" . LaTeX-mode) |
| 740 | ("\\.el\\'" . emacs-lisp-mode) |
| 741 | ("\\.mm\\'" . nroff-mode) |
| 742 | ("\\.me\\'" . nroff-mode) |
| 743 | ("\\.ms\\'" . nroff-mode) |
| 744 | ("\\.man\\'" . nroff-mode) |
| 745 | ("\\.scm\\'" . scheme-mode) |
| 746 | ("\\.l\\'" . lisp-mode) |
| 747 | ("\\.lisp\\'" . lisp-mode) |
| 748 | ("\\.f\\'" . fortran-mode) |
| 749 | ("\\.for\\'" . fortran-mode) |
| 750 | ("\\.mss\\'" . scribe-mode) |
| 751 | ("\\.pl\\'" . prolog-mode) |
| 752 | ("\\.cc\\'" . c++-mode) |
| 753 | ("\\.hh\\'" . c++-mode) |
| 754 | ("\\.C\\'" . c++-mode) |
| 755 | ("\\.H\\'" . c++-mode) |
| 756 | ;;; ("\\.mk\\'" . makefile-mode) |
| 757 | ;;; ("[Mm]akefile" . makefile-mode) |
| 758 | ;;; Less common extensions come here |
| 759 | ;;; so more common ones above are found faster. |
| 760 | ("\\.s\\'" . asm-mode) |
| 761 | ("ChangeLog\\'" . change-log-mode) |
| 762 | ("ChangeLog.[0-9]+\\'" . change-log-mode) |
| 763 | ("\\$CHANGE_LOG\\$\\.TXT" . change-log-mode) |
| 764 | ;; The following should come after the ChangeLog pattern |
| 765 | ;; for the sake of ChangeLog.1, etc. |
| 766 | ("\\.[12345678]\\'" . nroff-mode) |
| 767 | ("\\.TeX\\'" . TeX-mode) |
| 768 | ("\\.sty\\'" . LaTeX-mode) |
| 769 | ("\\.bbl\\'" . LaTeX-mode) |
| 770 | ("\\.bib\\'" . bibtex-mode) |
| 771 | ("\\.article\\'" . text-mode) |
| 772 | ("\\.letter\\'" . text-mode) |
| 773 | ("\\.texinfo\\'" . texinfo-mode) |
| 774 | ("\\.texi\\'" . texinfo-mode) |
| 775 | ("\\.lsp\\'" . lisp-mode) |
| 776 | ("\\.awk\\'" . awk-mode) |
| 777 | ("\\.prolog\\'" . prolog-mode) |
| 778 | ("\\.tar\\'" . tar-mode) |
| 779 | ;; Mailer puts message to be edited in |
| 780 | ;; /tmp/Re.... or Message |
| 781 | ("^/tmp/Re" . text-mode) |
| 782 | ("/Message[0-9]*\\'" . text-mode) |
| 783 | ;; some news reader is reported to use this |
| 784 | ("^/tmp/fol/" . text-mode) |
| 785 | ("\\.y\\'" . c-mode) |
| 786 | ("\\.lex\\'" . c-mode) |
| 787 | ("\\.oak\\'" . scheme-mode) |
| 788 | ("\\.scm.[0-9]*\\'" . scheme-mode) |
| 789 | ("\\.sgm\\'" . sgml-mode) |
| 790 | ("\\.sgml\\'" . sgml-mode) |
| 791 | ("\\.dtd\\'" . sgml-mode) |
| 792 | ;; .emacs following a directory delimiter |
| 793 | ;; in either Unix or VMS syntax. |
| 794 | ("[]>:/]\\..*emacs\\'" . emacs-lisp-mode) |
| 795 | ("\\.ml\\'" . lisp-mode))) |
| 796 | "\ |
| 797 | Alist of filename patterns vs corresponding major mode functions. |
| 798 | Each element looks like (REGEXP . FUNCTION). |
| 799 | Visiting a file whose name matches REGEXP causes FUNCTION to be called.") |
| 800 | |
| 801 | (defconst inhibit-local-variables-regexps '("\\.tar$") |
| 802 | "List of regexps; if one matches a file name, don't look for local vars.") |
| 803 | |
| 804 | (defun set-auto-mode () |
| 805 | "Select major mode appropriate for current buffer. |
| 806 | This checks for a -*- mode tag in the buffer's text, or |
| 807 | compares the filename against the entries in auto-mode-alist. It does |
| 808 | not check for the \"mode:\" local variable in the Local Variables |
| 809 | section of the file; for that, use `hack-local-variables'. |
| 810 | |
| 811 | If `enable-local-variables' is nil, this function does not check for a |
| 812 | -*- mode tag." |
| 813 | ;; Look for -*-MODENAME-*- or -*- ... mode: MODENAME; ... -*- |
| 814 | (let (beg end mode) |
| 815 | (save-excursion |
| 816 | (goto-char (point-min)) |
| 817 | (skip-chars-forward " \t\n") |
| 818 | (if (and enable-local-variables |
| 819 | ;; Don't look for -*- if this file name matches any |
| 820 | ;; of the regexps in inhibit-local-variables-regexps. |
| 821 | (not (let ((temp inhibit-local-variables-regexps)) |
| 822 | (while (and temp |
| 823 | (not (string-match (car temp) |
| 824 | buffer-file-name))) |
| 825 | (setq temp (cdr temp))) |
| 826 | (not temp))) |
| 827 | (search-forward "-*-" (save-excursion |
| 828 | ;; If the file begins with "#!" |
| 829 | ;; (exec interpreter magic), look |
| 830 | ;; for mode frobs in the first two |
| 831 | ;; lines. You cannot necessarily |
| 832 | ;; put them in the first line of |
| 833 | ;; such a file without screwing up |
| 834 | ;; the interpreter invocation. |
| 835 | (end-of-line (and (looking-at "^#!") 2)) |
| 836 | (point)) t) |
| 837 | (progn |
| 838 | (skip-chars-forward " \t") |
| 839 | (setq beg (point)) |
| 840 | (search-forward "-*-" |
| 841 | (save-excursion (end-of-line) (point)) |
| 842 | t)) |
| 843 | (progn |
| 844 | (forward-char -3) |
| 845 | (skip-chars-backward " \t") |
| 846 | (setq end (point)) |
| 847 | (goto-char beg) |
| 848 | (if (search-forward ":" end t) |
| 849 | (progn |
| 850 | (goto-char beg) |
| 851 | (if (let ((case-fold-search t)) |
| 852 | (search-forward "mode:" end t)) |
| 853 | (progn |
| 854 | (skip-chars-forward " \t") |
| 855 | (setq beg (point)) |
| 856 | (if (search-forward ";" end t) |
| 857 | (forward-char -1) |
| 858 | (goto-char end)) |
| 859 | (skip-chars-backward " \t") |
| 860 | (setq mode (buffer-substring beg (point)))))) |
| 861 | (setq mode (buffer-substring beg end))))) |
| 862 | (setq mode (intern (concat (downcase mode) "-mode"))) |
| 863 | (if buffer-file-name |
| 864 | (let ((alist auto-mode-alist) |
| 865 | (name buffer-file-name)) |
| 866 | (let ((case-fold-search (eq system-type 'vax-vms))) |
| 867 | ;; Remove backup-suffixes from file name. |
| 868 | (setq name (file-name-sans-versions name)) |
| 869 | ;; Find first matching alist entry. |
| 870 | (while (and (not mode) alist) |
| 871 | (if (string-match (car (car alist)) name) |
| 872 | (setq mode (cdr (car alist)))) |
| 873 | (setq alist (cdr alist)))))))) |
| 874 | (if mode (funcall mode)))) |
| 875 | |
| 876 | (defun hack-local-variables-prop-line () |
| 877 | ;; Set local variables specified in the -*- line. |
| 878 | ;; Returns t if mode was set. |
| 879 | (save-excursion |
| 880 | (goto-char (point-min)) |
| 881 | (skip-chars-forward " \t\n\r") |
| 882 | (let ((result '()) |
| 883 | (end (save-excursion (end-of-line) (point))) |
| 884 | mode-p) |
| 885 | ;; Parse the -*- line into the `result' alist. |
| 886 | (cond ((not (search-forward "-*-" end t)) |
| 887 | ;; doesn't have one. |
| 888 | nil) |
| 889 | ((looking-at "[ \t]*\\([^ \t\n\r:;]+\\)\\([ \t]*-\\*-\\)") |
| 890 | ;; Simple form: "-*- MODENAME -*-". |
| 891 | (setq result |
| 892 | (list (cons 'mode |
| 893 | (intern (buffer-substring |
| 894 | (match-beginning 1) |
| 895 | (match-end 1))))))) |
| 896 | (t |
| 897 | ;; Hairy form: '-*-' [ <variable> ':' <value> ';' ]* '-*-' |
| 898 | ;; (last ";" is optional). |
| 899 | (save-excursion |
| 900 | (if (search-forward "-*-" end t) |
| 901 | (setq end (- (point) 3)) |
| 902 | (error "-*- not terminated before end of line"))) |
| 903 | (while (< (point) end) |
| 904 | (or (looking-at "[ \t]*\\([^ \t\n:]+\\)[ \t]*:[ \t]*") |
| 905 | (error "malformed -*- line")) |
| 906 | (goto-char (match-end 0)) |
| 907 | (let ((key (intern (downcase (buffer-substring |
| 908 | (match-beginning 1) |
| 909 | (match-end 1))))) |
| 910 | (val (save-restriction |
| 911 | (narrow-to-region (point) end) |
| 912 | (read (current-buffer))))) |
| 913 | (setq result (cons (cons key val) result)) |
| 914 | (skip-chars-forward " \t;"))) |
| 915 | (setq result (nreverse result)))) |
| 916 | |
| 917 | ;; Mode is magic. |
| 918 | (let (mode) |
| 919 | (while (setq mode (assq 'mode result)) |
| 920 | (setq mode-p t result (delq mode result)) |
| 921 | (funcall (intern (concat (downcase (symbol-name (cdr mode))) |
| 922 | "-mode"))))) |
| 923 | |
| 924 | (if (and result |
| 925 | (or (eq enable-local-variables t) |
| 926 | (and enable-local-variables |
| 927 | (save-window-excursion |
| 928 | (switch-to-buffer (current-buffer)) |
| 929 | (y-or-n-p (format "Set local variables as specified in -*- line of %s? " |
| 930 | (file-name-nondirectory buffer-file-name))))))) |
| 931 | (while result |
| 932 | (let ((key (car (car result))) |
| 933 | (val (cdr (car result)))) |
| 934 | ;; 'mode has already been removed from this list. |
| 935 | (hack-one-local-variable key val)) |
| 936 | (setq result (cdr result)))) |
| 937 | mode-p))) |
| 938 | |
| 939 | (defun hack-local-variables () |
| 940 | "Parse and put into effect this buffer's local variables spec." |
| 941 | (hack-local-variables-prop-line) |
| 942 | ;; Look for "Local variables:" line in last page. |
| 943 | (save-excursion |
| 944 | (goto-char (point-max)) |
| 945 | (search-backward "\n\^L" (max (- (point-max) 3000) (point-min)) 'move) |
| 946 | (if (let ((case-fold-search t)) |
| 947 | (and (search-forward "Local Variables:" nil t) |
| 948 | (or (eq enable-local-variables t) |
| 949 | (and enable-local-variables |
| 950 | (save-window-excursion |
| 951 | (switch-to-buffer (current-buffer)) |
| 952 | (save-excursion |
| 953 | (beginning-of-line) |
| 954 | (set-window-start (selected-window) (point))) |
| 955 | (y-or-n-p (format "Set local variables as specified at end of %s? " |
| 956 | (file-name-nondirectory buffer-file-name)))))))) |
| 957 | (let ((continue t) |
| 958 | prefix prefixlen suffix beg |
| 959 | (enable-local-eval enable-local-eval)) |
| 960 | ;; The prefix is what comes before "local variables:" in its line. |
| 961 | ;; The suffix is what comes after "local variables:" in its line. |
| 962 | (skip-chars-forward " \t") |
| 963 | (or (eolp) |
| 964 | (setq suffix (buffer-substring (point) |
| 965 | (progn (end-of-line) (point))))) |
| 966 | (goto-char (match-beginning 0)) |
| 967 | (or (bolp) |
| 968 | (setq prefix |
| 969 | (buffer-substring (point) |
| 970 | (progn (beginning-of-line) (point))))) |
| 971 | |
| 972 | (if prefix (setq prefixlen (length prefix) |
| 973 | prefix (regexp-quote prefix))) |
| 974 | (if suffix (setq suffix (concat (regexp-quote suffix) "$"))) |
| 975 | (while continue |
| 976 | ;; Look at next local variable spec. |
| 977 | (if selective-display (re-search-forward "[\n\C-m]") |
| 978 | (forward-line 1)) |
| 979 | ;; Skip the prefix, if any. |
| 980 | (if prefix |
| 981 | (if (looking-at prefix) |
| 982 | (forward-char prefixlen) |
| 983 | (error "Local variables entry is missing the prefix"))) |
| 984 | ;; Find the variable name; strip whitespace. |
| 985 | (skip-chars-forward " \t") |
| 986 | (setq beg (point)) |
| 987 | (skip-chars-forward "^:\n") |
| 988 | (if (eolp) (error "Missing colon in local variables entry")) |
| 989 | (skip-chars-backward " \t") |
| 990 | (let* ((str (buffer-substring beg (point))) |
| 991 | (var (read str)) |
| 992 | val) |
| 993 | ;; Setting variable named "end" means end of list. |
| 994 | (if (string-equal (downcase str) "end") |
| 995 | (setq continue nil) |
| 996 | ;; Otherwise read the variable value. |
| 997 | (skip-chars-forward "^:") |
| 998 | (forward-char 1) |
| 999 | (setq val (read (current-buffer))) |
| 1000 | (skip-chars-backward "\n") |
| 1001 | (skip-chars-forward " \t") |
| 1002 | (or (if suffix (looking-at suffix) (eolp)) |
| 1003 | (error "Local variables entry is terminated incorrectly")) |
| 1004 | ;; Set the variable. "Variables" mode and eval are funny. |
| 1005 | (hack-one-local-variable var val)))))))) |
| 1006 | |
| 1007 | (defconst ignored-local-variables |
| 1008 | '(enable-local-eval) |
| 1009 | "Variables to be ignored in a file's local variable spec.") |
| 1010 | |
| 1011 | ;; "Set" one variable in a local variables spec. |
| 1012 | ;; A few variable names are treated specially. |
| 1013 | (defun hack-one-local-variable (var val) |
| 1014 | (cond ((eq var 'mode) |
| 1015 | (funcall (intern (concat (downcase (symbol-name val)) |
| 1016 | "-mode")))) |
| 1017 | ((memq var ignored-local-variables) |
| 1018 | nil) |
| 1019 | ;; "Setting" eval means either eval it or do nothing. |
| 1020 | ;; Likewise for setting hook variables. |
| 1021 | ((or (eq var 'eval) |
| 1022 | (string-match "-hooks?$\\|-functions?$" (symbol-name var))) |
| 1023 | (if (and (not (string= (user-login-name) "root")) |
| 1024 | (or (eq enable-local-eval t) |
| 1025 | (and enable-local-eval |
| 1026 | (save-window-excursion |
| 1027 | (switch-to-buffer (current-buffer)) |
| 1028 | (save-excursion |
| 1029 | (beginning-of-line) |
| 1030 | (set-window-start (selected-window) (point))) |
| 1031 | (setq enable-local-eval |
| 1032 | (y-or-n-p (format "Process `eval' or hook local variables in file %s? " |
| 1033 | (file-name-nondirectory buffer-file-name)))))))) |
| 1034 | (if (eq var 'eval) |
| 1035 | (save-excursion (eval val)) |
| 1036 | (make-local-variable var) |
| 1037 | (set var val)) |
| 1038 | (message "Ignoring `eval:' in file's local variables"))) |
| 1039 | ;; Ordinary variable, really set it. |
| 1040 | (t (make-local-variable var) |
| 1041 | (set var val)))) |
| 1042 | |
| 1043 | \f |
| 1044 | (defun set-visited-file-name (filename) |
| 1045 | "Change name of file visited in current buffer to FILENAME. |
| 1046 | The next time the buffer is saved it will go in the newly specified file. |
| 1047 | nil or empty string as argument means make buffer not be visiting any file. |
| 1048 | Remember to delete the initial contents of the minibuffer |
| 1049 | if you wish to pass an empty string as the argument." |
| 1050 | (interactive "FSet visited file name: ") |
| 1051 | (if filename |
| 1052 | (setq filename |
| 1053 | (if (string-equal filename "") |
| 1054 | nil |
| 1055 | (expand-file-name filename)))) |
| 1056 | (or (equal filename buffer-file-name) |
| 1057 | (null filename) |
| 1058 | (progn |
| 1059 | (lock-buffer filename) |
| 1060 | (unlock-buffer))) |
| 1061 | (setq buffer-file-name filename) |
| 1062 | (if filename ; make buffer name reflect filename. |
| 1063 | (let ((new-name (file-name-nondirectory buffer-file-name))) |
| 1064 | (if (string= new-name "") |
| 1065 | (error "Empty file name")) |
| 1066 | (if (eq system-type 'vax-vms) |
| 1067 | (setq new-name (downcase new-name))) |
| 1068 | (setq default-directory (file-name-directory buffer-file-name)) |
| 1069 | (rename-buffer new-name t))) |
| 1070 | (setq buffer-backed-up nil) |
| 1071 | (clear-visited-file-modtime) |
| 1072 | (if filename |
| 1073 | (progn |
| 1074 | (setq buffer-file-truename |
| 1075 | (abbreviate-file-name (file-truename buffer-file-name))) |
| 1076 | (if find-file-visit-truename |
| 1077 | (setq buffer-file-name buffer-file-truename)) |
| 1078 | (setq buffer-file-number (nth 10 (file-attributes buffer-file-name)))) |
| 1079 | (setq buffer-file-truename nil buffer-file-number nil)) |
| 1080 | ;; write-file-hooks is normally used for things like ftp-find-file |
| 1081 | ;; that visit things that are not local files as if they were files. |
| 1082 | ;; Changing to visit an ordinary local file instead should flush the hook. |
| 1083 | (kill-local-variable 'write-file-hooks) |
| 1084 | (kill-local-variable 'local-write-file-hooks) |
| 1085 | (kill-local-variable 'revert-buffer-function) |
| 1086 | (kill-local-variable 'backup-inhibited) |
| 1087 | ;; Turn off backup files for certain file names. |
| 1088 | ;; Since this is a permanent local, the major mode won't eliminate it. |
| 1089 | (and (not (funcall backup-enable-predicate buffer-file-name)) |
| 1090 | (progn |
| 1091 | (make-local-variable 'backup-inhibited) |
| 1092 | (setq backup-inhibited t))) |
| 1093 | ;; If auto-save was not already on, turn it on if appropriate. |
| 1094 | (if (not buffer-auto-save-file-name) |
| 1095 | (and buffer-file-name auto-save-default |
| 1096 | (auto-save-mode t)) |
| 1097 | ;; If auto save is on, start using a new name. |
| 1098 | ;; We deliberately don't rename or delete the old auto save |
| 1099 | ;; for the old visited file name. This is because perhaps |
| 1100 | ;; the user wants to save the new state and then compare with the |
| 1101 | ;; previous state from the auto save file. |
| 1102 | (setq buffer-auto-save-file-name |
| 1103 | (make-auto-save-file-name))) |
| 1104 | (if buffer-file-name |
| 1105 | (set-buffer-modified-p t))) |
| 1106 | |
| 1107 | (defun write-file (filename) |
| 1108 | "Write current buffer into file FILENAME. |
| 1109 | Makes buffer visit that file, and marks it not modified. |
| 1110 | If the buffer is already visiting a file, you can specify |
| 1111 | a directory name as FILENAME, to write a file of the same |
| 1112 | old name in that directory." |
| 1113 | ;; (interactive "FWrite file: ") |
| 1114 | (interactive |
| 1115 | (list (if buffer-file-name |
| 1116 | (read-file-name "Write file: " |
| 1117 | nil nil nil nil) |
| 1118 | (read-file-name "Write file: " |
| 1119 | (cdr (assq 'default-directory |
| 1120 | (buffer-local-variables))) |
| 1121 | nil nil (buffer-name))))) |
| 1122 | (or (null filename) (string-equal filename "") |
| 1123 | (progn |
| 1124 | ;; If arg is just a directory, |
| 1125 | ;; use same file name, but in that directory. |
| 1126 | (if (and (file-directory-p filename) buffer-file-name) |
| 1127 | (setq filename (concat (file-name-as-directory filename) |
| 1128 | (file-name-nondirectory buffer-file-name)))) |
| 1129 | (set-visited-file-name filename))) |
| 1130 | (set-buffer-modified-p t) |
| 1131 | (save-buffer)) |
| 1132 | \f |
| 1133 | (defun backup-buffer () |
| 1134 | "Make a backup of the disk file visited by the current buffer, if appropriate. |
| 1135 | This is normally done before saving the buffer the first time. |
| 1136 | If the value is non-nil, it is the result of `file-modes' on the original |
| 1137 | file; this means that the caller, after saving the buffer, should change |
| 1138 | the modes of the new file to agree with the old modes." |
| 1139 | (if (and make-backup-files (not backup-inhibited) |
| 1140 | (not buffer-backed-up) |
| 1141 | (file-exists-p buffer-file-name) |
| 1142 | (memq (aref (elt (file-attributes buffer-file-name) 8) 0) |
| 1143 | '(?- ?l))) |
| 1144 | (let ((real-file-name buffer-file-name) |
| 1145 | backup-info backupname targets setmodes) |
| 1146 | ;; If specified name is a symbolic link, chase it to the target. |
| 1147 | ;; Thus we make the backups in the directory where the real file is. |
| 1148 | (setq real-file-name (file-chase-links real-file-name)) |
| 1149 | (setq backup-info (find-backup-file-name real-file-name) |
| 1150 | backupname (car backup-info) |
| 1151 | targets (cdr backup-info)) |
| 1152 | ;;; (if (file-directory-p buffer-file-name) |
| 1153 | ;;; (error "Cannot save buffer in directory %s" buffer-file-name)) |
| 1154 | (condition-case () |
| 1155 | (let ((delete-old-versions |
| 1156 | ;; If have old versions to maybe delete, |
| 1157 | ;; ask the user to confirm now, before doing anything. |
| 1158 | ;; But don't actually delete til later. |
| 1159 | (and targets |
| 1160 | (or (eq trim-versions-without-asking t) (eq trim-versions-without-asking nil)) |
| 1161 | (or trim-versions-without-asking |
| 1162 | (y-or-n-p (format "Delete excess backup versions of %s? " |
| 1163 | real-file-name)))))) |
| 1164 | ;; Actually write the back up file. |
| 1165 | (condition-case () |
| 1166 | (if (or file-precious-flag |
| 1167 | ; (file-symlink-p buffer-file-name) |
| 1168 | backup-by-copying |
| 1169 | (and backup-by-copying-when-linked |
| 1170 | (> (file-nlinks real-file-name) 1)) |
| 1171 | (and backup-by-copying-when-mismatch |
| 1172 | (let ((attr (file-attributes real-file-name))) |
| 1173 | (or (nth 9 attr) |
| 1174 | (/= (nth 2 attr) (user-uid)))))) |
| 1175 | (condition-case () |
| 1176 | (copy-file real-file-name backupname t t) |
| 1177 | (file-error |
| 1178 | ;; If copying fails because file BACKUPNAME |
| 1179 | ;; is not writable, delete that file and try again. |
| 1180 | (if (and (file-exists-p backupname) |
| 1181 | (not (file-writable-p backupname))) |
| 1182 | (delete-file backupname)) |
| 1183 | (copy-file real-file-name backupname t t))) |
| 1184 | ;; rename-file should delete old backup. |
| 1185 | (rename-file real-file-name backupname t) |
| 1186 | (setq setmodes (file-modes backupname))) |
| 1187 | (file-error |
| 1188 | ;; If trouble writing the backup, write it in ~. |
| 1189 | (setq backupname (expand-file-name "~/%backup%~")) |
| 1190 | (message "Cannot write backup file; backing up in ~/%%backup%%~") |
| 1191 | (sleep-for 1) |
| 1192 | (condition-case () |
| 1193 | (copy-file real-file-name backupname t t) |
| 1194 | (file-error |
| 1195 | ;; If copying fails because file BACKUPNAME |
| 1196 | ;; is not writable, delete that file and try again. |
| 1197 | (if (and (file-exists-p backupname) |
| 1198 | (not (file-writable-p backupname))) |
| 1199 | (delete-file backupname)) |
| 1200 | (copy-file real-file-name backupname t t))))) |
| 1201 | (setq buffer-backed-up t) |
| 1202 | ;; Now delete the old versions, if desired. |
| 1203 | (if delete-old-versions |
| 1204 | (while targets |
| 1205 | (condition-case () |
| 1206 | (delete-file (car targets)) |
| 1207 | (file-error nil)) |
| 1208 | (setq targets (cdr targets)))) |
| 1209 | setmodes) |
| 1210 | (file-error nil))))) |
| 1211 | |
| 1212 | (defun file-name-sans-versions (name &optional keep-backup-version) |
| 1213 | "Return FILENAME sans backup versions or strings. |
| 1214 | This is a separate procedure so your site-init or startup file can |
| 1215 | redefine it. |
| 1216 | If the optional argument KEEP-BACKUP-VERSION is non-nil, |
| 1217 | we do not remove backup version numbers, only true file version numbers." |
| 1218 | (let ((handler (find-file-name-handler name))) |
| 1219 | (if handler |
| 1220 | (funcall handler 'file-name-sans-versions name keep-backup-version) |
| 1221 | (substring name 0 |
| 1222 | (if (eq system-type 'vax-vms) |
| 1223 | ;; VMS version number is (a) semicolon, optional |
| 1224 | ;; sign, zero or more digits or (b) period, option |
| 1225 | ;; sign, zero or more digits, provided this is the |
| 1226 | ;; second period encountered outside of the |
| 1227 | ;; device/directory part of the file name. |
| 1228 | (or (string-match ";[---+]?[0-9]*\\'" name) |
| 1229 | (if (string-match "\\.[^]>:]*\\(\\.[---+]?[0-9]*\\)\\'" |
| 1230 | name) |
| 1231 | (match-beginning 1)) |
| 1232 | (length name)) |
| 1233 | (if keep-backup-version |
| 1234 | (length name) |
| 1235 | (or (string-match "\\.~[0-9]+~\\'" name) |
| 1236 | (string-match "~\\'" name) |
| 1237 | (length name)))))))) |
| 1238 | |
| 1239 | (defun make-backup-file-name (file) |
| 1240 | "Create the non-numeric backup file name for FILE. |
| 1241 | This is a separate function so you can redefine it for customization." |
| 1242 | (concat file "~")) |
| 1243 | |
| 1244 | (defun backup-file-name-p (file) |
| 1245 | "Return non-nil if FILE is a backup file name (numeric or not). |
| 1246 | This is a separate function so you can redefine it for customization. |
| 1247 | You may need to redefine `file-name-sans-versions' as well." |
| 1248 | (string-match "~$" file)) |
| 1249 | |
| 1250 | ;; This is used in various files. |
| 1251 | ;; The usage of bv-length is not very clean, |
| 1252 | ;; but I can't see a good alternative, |
| 1253 | ;; so as of now I am leaving it alone. |
| 1254 | (defun backup-extract-version (fn) |
| 1255 | "Given the name of a numeric backup file, return the backup number. |
| 1256 | Uses the free variable `bv-length', whose value should be |
| 1257 | the index in the name where the version number begins." |
| 1258 | (if (and (string-match "[0-9]+~$" fn bv-length) |
| 1259 | (= (match-beginning 0) bv-length)) |
| 1260 | (string-to-int (substring fn bv-length -1)) |
| 1261 | 0)) |
| 1262 | |
| 1263 | ;; I believe there is no need to alter this behavior for VMS; |
| 1264 | ;; since backup files are not made on VMS, it should not get called. |
| 1265 | (defun find-backup-file-name (fn) |
| 1266 | "Find a file name for a backup file, and suggestions for deletions. |
| 1267 | Value is a list whose car is the name for the backup file |
| 1268 | and whose cdr is a list of old versions to consider deleting now." |
| 1269 | (if (eq version-control 'never) |
| 1270 | (list (make-backup-file-name fn)) |
| 1271 | (let* ((base-versions (concat (file-name-nondirectory fn) ".~")) |
| 1272 | (bv-length (length base-versions)) |
| 1273 | (possibilities (file-name-all-completions |
| 1274 | base-versions |
| 1275 | (file-name-directory fn))) |
| 1276 | (versions (sort (mapcar |
| 1277 | (function backup-extract-version) |
| 1278 | possibilities) |
| 1279 | '<)) |
| 1280 | (high-water-mark (apply 'max 0 versions)) |
| 1281 | (deserve-versions-p |
| 1282 | (or version-control |
| 1283 | (> high-water-mark 0))) |
| 1284 | (number-to-delete (- (length versions) |
| 1285 | kept-old-versions kept-new-versions -1))) |
| 1286 | (if (not deserve-versions-p) |
| 1287 | (list (make-backup-file-name fn)) |
| 1288 | (cons (concat fn ".~" (int-to-string (1+ high-water-mark)) "~") |
| 1289 | (if (and (> number-to-delete 0) |
| 1290 | ;; Delete nothing if there is overflow |
| 1291 | ;; in the number of versions to keep. |
| 1292 | (>= (+ kept-new-versions kept-old-versions -1) 0)) |
| 1293 | (mapcar (function (lambda (n) |
| 1294 | (concat fn ".~" (int-to-string n) "~"))) |
| 1295 | (let ((v (nthcdr kept-old-versions versions))) |
| 1296 | (rplacd (nthcdr (1- number-to-delete) v) ()) |
| 1297 | v)))))))) |
| 1298 | |
| 1299 | (defun file-nlinks (filename) |
| 1300 | "Return number of names file FILENAME has." |
| 1301 | (car (cdr (file-attributes filename)))) |
| 1302 | |
| 1303 | (defun file-relative-name-1 (directory) |
| 1304 | (cond ((string= directory "/") |
| 1305 | filename) |
| 1306 | ((string-match (concat "^" (regexp-quote directory)) |
| 1307 | filename) |
| 1308 | (substring filename (match-end 0))) |
| 1309 | (t |
| 1310 | (file-relative-name-1 |
| 1311 | (file-name-directory (substring directory 0 -1)))))) |
| 1312 | |
| 1313 | (defun file-relative-name (filename &optional directory) |
| 1314 | "Convert FILENAME to be relative to DIRECTORY (default: default-directory)." |
| 1315 | (setq filename (expand-file-name filename) |
| 1316 | directory (file-name-as-directory (if directory |
| 1317 | (expand-file-name directory) |
| 1318 | default-directory))) |
| 1319 | (file-relative-name-1 directory)) |
| 1320 | \f |
| 1321 | (defun save-buffer (&optional args) |
| 1322 | "Save current buffer in visited file if modified. Versions described below. |
| 1323 | By default, makes the previous version into a backup file |
| 1324 | if previously requested or if this is the first save. |
| 1325 | With 1 or 3 \\[universal-argument]'s, marks this version |
| 1326 | to become a backup when the next save is done. |
| 1327 | With 2 or 3 \\[universal-argument]'s, |
| 1328 | unconditionally makes the previous version into a backup file. |
| 1329 | With argument of 0, never makes the previous version into a backup file. |
| 1330 | |
| 1331 | If a file's name is FOO, the names of its numbered backup versions are |
| 1332 | FOO.~i~ for various integers i. A non-numbered backup file is called FOO~. |
| 1333 | Numeric backups (rather than FOO~) will be made if value of |
| 1334 | `version-control' is not the atom `never' and either there are already |
| 1335 | numeric versions of the file being backed up, or `version-control' is |
| 1336 | non-nil. |
| 1337 | We don't want excessive versions piling up, so there are variables |
| 1338 | `kept-old-versions', which tells Emacs how many oldest versions to keep, |
| 1339 | and `kept-new-versions', which tells how many newest versions to keep. |
| 1340 | Defaults are 2 old versions and 2 new. |
| 1341 | `dired-kept-versions' controls dired's clean-directory (.) command. |
| 1342 | If `trim-versions-without-asking' is nil, system will query user |
| 1343 | before trimming versions. Otherwise it does it silently." |
| 1344 | (interactive "p") |
| 1345 | (let ((modp (buffer-modified-p)) |
| 1346 | (large (> (buffer-size) 50000)) |
| 1347 | (make-backup-files (and make-backup-files (not (eq args 0))))) |
| 1348 | (and modp (memq args '(16 64)) (setq buffer-backed-up nil)) |
| 1349 | (if (and modp large) (message "Saving file %s..." (buffer-file-name))) |
| 1350 | (basic-save-buffer) |
| 1351 | (and modp (memq args '(4 64)) (setq buffer-backed-up nil)))) |
| 1352 | |
| 1353 | (defun delete-auto-save-file-if-necessary (&optional force) |
| 1354 | "Delete auto-save file for current buffer if `delete-auto-save-files' is t. |
| 1355 | Normally delete only if the file was written by this Emacs since |
| 1356 | the last real save, but optional arg FORCE non-nil means delete anyway." |
| 1357 | (and buffer-auto-save-file-name delete-auto-save-files |
| 1358 | (not (string= buffer-file-name buffer-auto-save-file-name)) |
| 1359 | (or force (recent-auto-save-p)) |
| 1360 | (progn |
| 1361 | (condition-case () |
| 1362 | (delete-file buffer-auto-save-file-name) |
| 1363 | (file-error nil)) |
| 1364 | (set-buffer-auto-saved)))) |
| 1365 | |
| 1366 | (defun basic-save-buffer () |
| 1367 | "Save the current buffer in its visited file, if it has been modified." |
| 1368 | (interactive) |
| 1369 | (if (buffer-modified-p) |
| 1370 | (let ((recent-save (recent-auto-save-p)) |
| 1371 | setmodes tempsetmodes) |
| 1372 | ;; On VMS, rename file and buffer to get rid of version number. |
| 1373 | (if (and (eq system-type 'vax-vms) |
| 1374 | (not (string= buffer-file-name |
| 1375 | (file-name-sans-versions buffer-file-name)))) |
| 1376 | (let (buffer-new-name) |
| 1377 | ;; Strip VMS version number before save. |
| 1378 | (setq buffer-file-name |
| 1379 | (file-name-sans-versions buffer-file-name)) |
| 1380 | ;; Construct a (unique) buffer name to correspond. |
| 1381 | (let ((buf (create-file-buffer (downcase buffer-file-name)))) |
| 1382 | (setq buffer-new-name (buffer-name buf)) |
| 1383 | (kill-buffer buf)) |
| 1384 | (rename-buffer buffer-new-name))) |
| 1385 | ;; If buffer has no file name, ask user for one. |
| 1386 | (or buffer-file-name |
| 1387 | (progn |
| 1388 | (setq buffer-file-name |
| 1389 | (expand-file-name (read-file-name "File to save in: ") nil) |
| 1390 | default-directory (file-name-directory buffer-file-name)) |
| 1391 | (and auto-save-default (not buffer-auto-save-file-name) |
| 1392 | (auto-save-mode t)))) |
| 1393 | (or (verify-visited-file-modtime (current-buffer)) |
| 1394 | (not (file-exists-p buffer-file-name)) |
| 1395 | (yes-or-no-p |
| 1396 | (format "%s has changed since visited or saved. Save anyway? " |
| 1397 | (file-name-nondirectory buffer-file-name))) |
| 1398 | (error "Save not confirmed")) |
| 1399 | (save-restriction |
| 1400 | (widen) |
| 1401 | (and (> (point-max) 1) |
| 1402 | (/= (char-after (1- (point-max))) ?\n) |
| 1403 | (or (eq require-final-newline t) |
| 1404 | (and require-final-newline |
| 1405 | (y-or-n-p |
| 1406 | (format "Buffer %s does not end in newline. Add one? " |
| 1407 | (buffer-name))))) |
| 1408 | (save-excursion |
| 1409 | (goto-char (point-max)) |
| 1410 | (insert ?\n))) |
| 1411 | (let ((hooks (append write-contents-hooks local-write-file-hooks |
| 1412 | write-file-hooks)) |
| 1413 | (done nil)) |
| 1414 | (while (and hooks |
| 1415 | (not (setq done (funcall (car hooks))))) |
| 1416 | (setq hooks (cdr hooks))) |
| 1417 | ;; If a hook returned t, file is already "written". |
| 1418 | (cond ((not done) |
| 1419 | (if (not (file-writable-p buffer-file-name)) |
| 1420 | (let ((dir (file-name-directory buffer-file-name))) |
| 1421 | (if (not (file-directory-p dir)) |
| 1422 | (error "%s is not a directory" dir) |
| 1423 | (if (not (file-exists-p buffer-file-name)) |
| 1424 | (error "Directory %s write-protected" dir) |
| 1425 | (if (yes-or-no-p |
| 1426 | (format "File %s is write-protected; try to save anyway? " |
| 1427 | (file-name-nondirectory |
| 1428 | buffer-file-name))) |
| 1429 | (setq tempsetmodes t) |
| 1430 | (error "Attempt to save to a file which you aren't allowed to write")))))) |
| 1431 | (or buffer-backed-up |
| 1432 | (setq setmodes (backup-buffer))) |
| 1433 | (if file-precious-flag |
| 1434 | ;; If file is precious, write temp name, then rename it. |
| 1435 | (let ((dir (file-name-directory buffer-file-name)) |
| 1436 | (realname buffer-file-name) |
| 1437 | tempname temp nogood i succeed) |
| 1438 | (setq i 0) |
| 1439 | (setq nogood t) |
| 1440 | ;; Find the temporary name to write under. |
| 1441 | (while nogood |
| 1442 | (setq tempname (format "%s#tmp#%d" dir i)) |
| 1443 | (setq nogood (file-exists-p tempname)) |
| 1444 | (setq i (1+ i))) |
| 1445 | (unwind-protect |
| 1446 | (progn (clear-visited-file-modtime) |
| 1447 | (write-region (point-min) (point-max) |
| 1448 | tempname nil realname) |
| 1449 | (setq succeed t)) |
| 1450 | ;; If writing the temp file fails, |
| 1451 | ;; delete the temp file. |
| 1452 | (or succeed (delete-file tempname))) |
| 1453 | ;; Since we have created an entirely new file |
| 1454 | ;; and renamed it, make sure it gets the |
| 1455 | ;; right permission bits set. |
| 1456 | (setq setmodes (file-modes buffer-file-name)) |
| 1457 | ;; We succeeded in writing the temp file, |
| 1458 | ;; so rename it. |
| 1459 | (rename-file tempname buffer-file-name t)) |
| 1460 | ;; If file not writable, see if we can make it writable |
| 1461 | ;; temporarily while we write it. |
| 1462 | ;; But no need to do so if we have just backed it up |
| 1463 | ;; (setmodes is set) because that says we're superseding. |
| 1464 | (cond ((and tempsetmodes (not setmodes)) |
| 1465 | ;; Change the mode back, after writing. |
| 1466 | (setq setmodes (file-modes buffer-file-name)) |
| 1467 | (set-file-modes buffer-file-name 511))) |
| 1468 | (write-region (point-min) (point-max) |
| 1469 | buffer-file-name nil t))))) |
| 1470 | (setq buffer-file-number (nth 10 (file-attributes buffer-file-name))) |
| 1471 | (if setmodes |
| 1472 | (condition-case () |
| 1473 | (set-file-modes buffer-file-name setmodes) |
| 1474 | (error nil)))) |
| 1475 | ;; If the auto-save file was recent before this command, |
| 1476 | ;; delete it now. |
| 1477 | (delete-auto-save-file-if-necessary recent-save) |
| 1478 | (run-hooks 'after-save-hooks)) |
| 1479 | (message "(No changes need to be saved)"))) |
| 1480 | |
| 1481 | (defun save-some-buffers (&optional arg exiting) |
| 1482 | "Save some modified file-visiting buffers. Asks user about each one. |
| 1483 | Optional argument (the prefix) non-nil means save all with no questions. |
| 1484 | Optional second argument EXITING means ask about certain non-file buffers |
| 1485 | as well as about file buffers." |
| 1486 | (interactive "P") |
| 1487 | (save-window-excursion |
| 1488 | (if (zerop (map-y-or-n-p |
| 1489 | (function |
| 1490 | (lambda (buffer) |
| 1491 | (and (buffer-modified-p buffer) |
| 1492 | (or |
| 1493 | (buffer-file-name buffer) |
| 1494 | (and exiting |
| 1495 | (progn |
| 1496 | (set-buffer buffer) |
| 1497 | (and buffer-offer-save (> (buffer-size) 0))))) |
| 1498 | (if arg |
| 1499 | t |
| 1500 | (if (buffer-file-name buffer) |
| 1501 | (format "Save file %s? " |
| 1502 | (buffer-file-name buffer)) |
| 1503 | (format "Save buffer %s? " |
| 1504 | (buffer-name buffer))))))) |
| 1505 | (function |
| 1506 | (lambda (buffer) |
| 1507 | (set-buffer buffer) |
| 1508 | (save-buffer))) |
| 1509 | (buffer-list) |
| 1510 | '("buffer" "buffers" "save") |
| 1511 | (list (list ?\C-r (lambda (buf) |
| 1512 | (view-buffer buf) |
| 1513 | (setq view-exit-action |
| 1514 | '(lambda (ignore) |
| 1515 | (exit-recursive-edit))) |
| 1516 | (recursive-edit) |
| 1517 | ;; Return nil to ask about BUF again. |
| 1518 | nil) |
| 1519 | "display the current buffer")) |
| 1520 | )) |
| 1521 | (message "(No files need saving)")))) |
| 1522 | \f |
| 1523 | (defun not-modified (&optional arg) |
| 1524 | "Mark current buffer as unmodified, not needing to be saved. |
| 1525 | With prefix arg, mark buffer as modified, so \\[save-buffer] will save." |
| 1526 | (interactive "P") |
| 1527 | (message (if arg "Modification-flag set" |
| 1528 | "Modification-flag cleared")) |
| 1529 | (set-buffer-modified-p arg)) |
| 1530 | |
| 1531 | (defun toggle-read-only (&optional arg) |
| 1532 | "Change whether this buffer is visiting its file read-only. |
| 1533 | With arg, set read-only iff arg is positive." |
| 1534 | (interactive "P") |
| 1535 | (setq buffer-read-only |
| 1536 | (if (null arg) |
| 1537 | (not buffer-read-only) |
| 1538 | (> (prefix-numeric-value arg) 0))) |
| 1539 | ;; Force mode-line redisplay |
| 1540 | (set-buffer-modified-p (buffer-modified-p))) |
| 1541 | |
| 1542 | (defun insert-file (filename) |
| 1543 | "Insert contents of file FILENAME into buffer after point. |
| 1544 | Set mark after the inserted text. |
| 1545 | |
| 1546 | This function is meant for the user to run interactively. |
| 1547 | Don't call it from programs! Use `insert-file-contents' instead. |
| 1548 | \(Its calling sequence is different; see its documentation)." |
| 1549 | (interactive "fInsert file: ") |
| 1550 | (let ((tem (insert-file-contents filename))) |
| 1551 | (push-mark (+ (point) (car (cdr tem)))))) |
| 1552 | |
| 1553 | (defun append-to-file (start end filename) |
| 1554 | "Append the contents of the region to the end of file FILENAME. |
| 1555 | When called from a function, expects three arguments, |
| 1556 | START, END and FILENAME. START and END are buffer positions |
| 1557 | saying what text to write." |
| 1558 | (interactive "r\nFAppend to file: ") |
| 1559 | (write-region start end filename t)) |
| 1560 | |
| 1561 | (defun file-newest-backup (filename) |
| 1562 | "Return most recent backup file for FILENAME or nil if no backups exist." |
| 1563 | (let* ((filename (expand-file-name filename)) |
| 1564 | (file (file-name-nondirectory filename)) |
| 1565 | (dir (file-name-directory filename)) |
| 1566 | (comp (file-name-all-completions file dir)) |
| 1567 | newest) |
| 1568 | (while comp |
| 1569 | (setq file (concat dir (car comp)) |
| 1570 | comp (cdr comp)) |
| 1571 | (if (and (backup-file-name-p file) |
| 1572 | (or (null newest) (file-newer-than-file-p file newest))) |
| 1573 | (setq newest file))) |
| 1574 | newest)) |
| 1575 | |
| 1576 | (defun rename-uniquely () |
| 1577 | "Rename current buffer to a similar name not already taken. |
| 1578 | This function is useful for creating multiple shell process buffers |
| 1579 | or multiple mail buffers, etc." |
| 1580 | (interactive) |
| 1581 | (let* ((new-buf (generate-new-buffer (buffer-name))) |
| 1582 | (name (buffer-name new-buf))) |
| 1583 | (kill-buffer new-buf) |
| 1584 | (rename-buffer name) |
| 1585 | (set-buffer-modified-p (buffer-modified-p)))) ; force mode line update |
| 1586 | |
| 1587 | (defun make-directory (dir &optional parents) |
| 1588 | "Create the directory DIR and any nonexistent parent dirs." |
| 1589 | (interactive "FMake directory: \nP") |
| 1590 | (let ((handler (find-file-name-handler dir))) |
| 1591 | (if handler |
| 1592 | (funcall handler 'make-directory dir parents) |
| 1593 | (if (not parents) |
| 1594 | (make-directory-internal dir) |
| 1595 | (let ((dir (directory-file-name (expand-file-name dir))) |
| 1596 | create-list) |
| 1597 | (while (not (file-exists-p dir)) |
| 1598 | (setq create-list (cons dir create-list) |
| 1599 | dir (directory-file-name (file-name-directory dir)))) |
| 1600 | (while create-list |
| 1601 | (make-directory-internal (car create-list)) |
| 1602 | (setq create-list (cdr create-list)))))))) |
| 1603 | \f |
| 1604 | (put 'revert-buffer-function 'permanent-local t) |
| 1605 | (defvar revert-buffer-function nil |
| 1606 | "Function to use to revert this buffer, or nil to do the default.") |
| 1607 | |
| 1608 | (put 'revert-buffer-insert-file-contents-function 'permanent-local t) |
| 1609 | (defvar revert-buffer-insert-file-contents-function nil |
| 1610 | "Function to use to insert contents when reverting this buffer. |
| 1611 | Gets two args, first the nominal file name to use, |
| 1612 | and second, t if reading the auto-save file.") |
| 1613 | |
| 1614 | (defun revert-buffer (&optional ignore-auto noconfirm) |
| 1615 | "Replace the buffer text with the text of the visited file on disk. |
| 1616 | This undoes all changes since the file was visited or saved. |
| 1617 | With a prefix argument, offer to revert from latest auto-save file, if |
| 1618 | that is more recent than the visited file. |
| 1619 | |
| 1620 | When called from lisp, the first argument is IGNORE-AUTO; only offer |
| 1621 | to revert from the auto-save file when this is nil. Note that the |
| 1622 | sense of this argument is the reverse of the prefix argument, for the |
| 1623 | sake of backward compatibility. IGNORE-AUTO is optional, defaulting |
| 1624 | to nil. |
| 1625 | |
| 1626 | Optional second argument NOCONFIRM means don't ask for confirmation at |
| 1627 | all. |
| 1628 | |
| 1629 | If the value of `revert-buffer-function' is non-nil, it is called to |
| 1630 | do the work." |
| 1631 | ;; I admit it's odd to reverse the sense of the prefix argument, but |
| 1632 | ;; there is a lot of code out there which assumes that the first |
| 1633 | ;; argument should be t to avoid consulting the auto-save file, and |
| 1634 | ;; there's no straightforward way to encourage authors to notice a |
| 1635 | ;; reversal of the argument sense. So I'm just changing the user |
| 1636 | ;; interface, but leaving the programmatic interface the same. |
| 1637 | (interactive (list (not prefix-arg))) |
| 1638 | (if revert-buffer-function |
| 1639 | (funcall revert-buffer-function ignore-auto noconfirm) |
| 1640 | (let* ((opoint (point)) |
| 1641 | (auto-save-p (and (not ignore-auto) |
| 1642 | (recent-auto-save-p) |
| 1643 | buffer-auto-save-file-name |
| 1644 | (file-readable-p buffer-auto-save-file-name) |
| 1645 | (y-or-n-p |
| 1646 | "Buffer has been auto-saved recently. Revert from auto-save file? "))) |
| 1647 | (file-name (if auto-save-p |
| 1648 | buffer-auto-save-file-name |
| 1649 | buffer-file-name))) |
| 1650 | (cond ((null file-name) |
| 1651 | (error "Buffer does not seem to be associated with any file")) |
| 1652 | ((or noconfirm |
| 1653 | (yes-or-no-p (format "Revert buffer from file %s? " |
| 1654 | file-name))) |
| 1655 | ;; If file was backed up but has changed since, |
| 1656 | ;; we shd make another backup. |
| 1657 | (and (not auto-save-p) |
| 1658 | (not (verify-visited-file-modtime (current-buffer))) |
| 1659 | (setq buffer-backed-up nil)) |
| 1660 | ;; Get rid of all undo records for this buffer. |
| 1661 | (or (eq buffer-undo-list t) |
| 1662 | (setq buffer-undo-list nil)) |
| 1663 | (let ((buffer-read-only nil) |
| 1664 | ;; Don't make undo records for the reversion. |
| 1665 | (buffer-undo-list t)) |
| 1666 | (if revert-buffer-insert-file-contents-function |
| 1667 | (funcall revert-buffer-insert-file-contents-function |
| 1668 | file-name auto-save-p) |
| 1669 | (if (not (file-exists-p file-name)) |
| 1670 | (error "File %s no longer exists!" file-name)) |
| 1671 | ;; Bind buffer-file-name to nil |
| 1672 | ;; so that we don't try to lock the file. |
| 1673 | (let ((buffer-file-name nil)) |
| 1674 | (or auto-save-p |
| 1675 | (unlock-buffer)) |
| 1676 | (erase-buffer)) |
| 1677 | (insert-file-contents file-name (not auto-save-p)))) |
| 1678 | (goto-char (min opoint (point-max))) |
| 1679 | (after-find-file nil nil t) |
| 1680 | t))))) |
| 1681 | |
| 1682 | (defun recover-file (file) |
| 1683 | "Visit file FILE, but get contents from its last auto-save file." |
| 1684 | (interactive |
| 1685 | (let ((prompt-file buffer-file-name) |
| 1686 | (file-name nil) |
| 1687 | (file-dir nil)) |
| 1688 | (and prompt-file |
| 1689 | (setq file-name (file-name-nondirectory prompt-file) |
| 1690 | file-dir (file-name-directory prompt-file))) |
| 1691 | (list (read-file-name "Recover file: " |
| 1692 | file-dir nil nil file-name)))) |
| 1693 | (setq file (expand-file-name file)) |
| 1694 | (if (auto-save-file-name-p file) (error "%s is an auto-save file" file)) |
| 1695 | (let ((file-name (let ((buffer-file-name file)) |
| 1696 | (make-auto-save-file-name)))) |
| 1697 | (cond ((not (file-newer-than-file-p file-name file)) |
| 1698 | (error "Auto-save file %s not current" file-name)) |
| 1699 | ((save-window-excursion |
| 1700 | (if (not (eq system-type 'vax-vms)) |
| 1701 | (with-output-to-temp-buffer "*Directory*" |
| 1702 | (buffer-disable-undo standard-output) |
| 1703 | (call-process "ls" nil standard-output nil |
| 1704 | (if (file-symlink-p file) "-lL" "-l") |
| 1705 | file file-name))) |
| 1706 | (yes-or-no-p (format "Recover auto save file %s? " file-name))) |
| 1707 | (switch-to-buffer (find-file-noselect file t)) |
| 1708 | (let ((buffer-read-only nil)) |
| 1709 | (erase-buffer) |
| 1710 | (insert-file-contents file-name nil)) |
| 1711 | (after-find-file nil nil t)) |
| 1712 | (t (error "Recover-file cancelled."))))) |
| 1713 | |
| 1714 | (defun kill-some-buffers () |
| 1715 | "For each buffer, ask whether to kill it." |
| 1716 | (interactive) |
| 1717 | (let ((list (buffer-list))) |
| 1718 | (while list |
| 1719 | (let* ((buffer (car list)) |
| 1720 | (name (buffer-name buffer))) |
| 1721 | (and (not (string-equal name "")) |
| 1722 | (/= (aref name 0) ? ) |
| 1723 | (yes-or-no-p |
| 1724 | (format "Buffer %s %s. Kill? " |
| 1725 | name |
| 1726 | (if (buffer-modified-p buffer) |
| 1727 | "HAS BEEN EDITED" "is unmodified"))) |
| 1728 | (kill-buffer buffer))) |
| 1729 | (setq list (cdr list))))) |
| 1730 | \f |
| 1731 | (defun auto-save-mode (arg) |
| 1732 | "Toggle auto-saving of contents of current buffer. |
| 1733 | With prefix argument ARG, turn auto-saving on if positive, else off." |
| 1734 | (interactive "P") |
| 1735 | (setq buffer-auto-save-file-name |
| 1736 | (and (if (null arg) |
| 1737 | (not buffer-auto-save-file-name) |
| 1738 | (or (eq arg t) (listp arg) (and (integerp arg) (> arg 0)))) |
| 1739 | (if (and buffer-file-name auto-save-visited-file-name |
| 1740 | (not buffer-read-only)) |
| 1741 | buffer-file-name |
| 1742 | (make-auto-save-file-name)))) |
| 1743 | (if (interactive-p) |
| 1744 | (message "Auto-save %s (in this buffer)" |
| 1745 | (if buffer-auto-save-file-name "on" "off"))) |
| 1746 | buffer-auto-save-file-name) |
| 1747 | |
| 1748 | (defun rename-auto-save-file () |
| 1749 | "Adjust current buffer's auto save file name for current conditions. |
| 1750 | Also rename any existing auto save file, if it was made in this session." |
| 1751 | (let ((osave buffer-auto-save-file-name)) |
| 1752 | (setq buffer-auto-save-file-name |
| 1753 | (make-auto-save-file-name)) |
| 1754 | (if (and osave buffer-auto-save-file-name |
| 1755 | (not (string= buffer-auto-save-file-name buffer-file-name)) |
| 1756 | (not (string= buffer-auto-save-file-name osave)) |
| 1757 | (file-exists-p osave) |
| 1758 | (recent-auto-save-p)) |
| 1759 | (rename-file osave buffer-auto-save-file-name t)))) |
| 1760 | |
| 1761 | (defun make-auto-save-file-name () |
| 1762 | "Return file name to use for auto-saves of current buffer. |
| 1763 | Does not consider `auto-save-visited-file-name' as that variable is checked |
| 1764 | before calling this function. You can redefine this for customization. |
| 1765 | See also `auto-save-file-name-p'." |
| 1766 | (if buffer-file-name |
| 1767 | (concat (file-name-directory buffer-file-name) |
| 1768 | "#" |
| 1769 | (file-name-nondirectory buffer-file-name) |
| 1770 | "#") |
| 1771 | ;; For non-file bfr, use bfr name and Emacs pid. |
| 1772 | (expand-file-name (format "#%s#%s#" (buffer-name) (make-temp-name ""))))) |
| 1773 | |
| 1774 | (defun auto-save-file-name-p (filename) |
| 1775 | "Return non-nil if FILENAME can be yielded by `make-auto-save-file-name'. |
| 1776 | FILENAME should lack slashes. You can redefine this for customization." |
| 1777 | (string-match "^#.*#$" filename)) |
| 1778 | \f |
| 1779 | (defconst list-directory-brief-switches |
| 1780 | (if (eq system-type 'vax-vms) "" "-CF") |
| 1781 | "*Switches for list-directory to pass to `ls' for brief listing,") |
| 1782 | |
| 1783 | (defconst list-directory-verbose-switches |
| 1784 | (if (eq system-type 'vax-vms) |
| 1785 | "/PROTECTION/SIZE/DATE/OWNER/WIDTH=(OWNER:10)" |
| 1786 | "-l") |
| 1787 | "*Switches for list-directory to pass to `ls' for verbose listing,") |
| 1788 | |
| 1789 | (defun list-directory (dirname &optional verbose) |
| 1790 | "Display a list of files in or matching DIRNAME, a la `ls'. |
| 1791 | DIRNAME is globbed by the shell if necessary. |
| 1792 | Prefix arg (second arg if noninteractive) means supply -l switch to `ls'. |
| 1793 | Actions controlled by variables `list-directory-brief-switches' |
| 1794 | and `list-directory-verbose-switches'." |
| 1795 | (interactive (let ((pfx current-prefix-arg)) |
| 1796 | (list (read-file-name (if pfx "List directory (verbose): " |
| 1797 | "List directory (brief): ") |
| 1798 | nil default-directory nil) |
| 1799 | pfx))) |
| 1800 | (let ((switches (if verbose list-directory-verbose-switches |
| 1801 | list-directory-brief-switches))) |
| 1802 | (or dirname (setq dirname default-directory)) |
| 1803 | (setq dirname (expand-file-name dirname)) |
| 1804 | (with-output-to-temp-buffer "*Directory*" |
| 1805 | (buffer-disable-undo standard-output) |
| 1806 | (princ "Directory ") |
| 1807 | (princ dirname) |
| 1808 | (terpri) |
| 1809 | (save-excursion |
| 1810 | (set-buffer "*Directory*") |
| 1811 | (let ((wildcard (not (file-directory-p dirname)))) |
| 1812 | (insert-directory dirname switches wildcard (not wildcard))))))) |
| 1813 | |
| 1814 | (defvar insert-directory-program "ls" |
| 1815 | "Absolute or relative name of the `ls' program used by `insert-directory'.") |
| 1816 | |
| 1817 | ;; insert-directory |
| 1818 | ;; - must insert _exactly_one_line_ describing FILE if WILDCARD and |
| 1819 | ;; FULL-DIRECTORY-P is nil. |
| 1820 | ;; The single line of output must display FILE's name as it was |
| 1821 | ;; given, namely, an absolute path name. |
| 1822 | ;; - must insert exactly one line for each file if WILDCARD or |
| 1823 | ;; FULL-DIRECTORY-P is t, plus one optional "total" line |
| 1824 | ;; before the file lines, plus optional text after the file lines. |
| 1825 | ;; Lines are delimited by "\n", so filenames containing "\n" are not |
| 1826 | ;; allowed. |
| 1827 | ;; File lines should display the basename. |
| 1828 | ;; - must be consistent with |
| 1829 | ;; - functions dired-move-to-filename, (these two define what a file line is) |
| 1830 | ;; dired-move-to-end-of-filename, |
| 1831 | ;; dired-between-files, (shortcut for (not (dired-move-to-filename))) |
| 1832 | ;; dired-insert-headerline |
| 1833 | ;; dired-after-subdir-garbage (defines what a "total" line is) |
| 1834 | ;; - variable dired-subdir-regexp |
| 1835 | (defun insert-directory (file switches &optional wildcard full-directory-p) |
| 1836 | "Insert directory listing for of FILE, formatted according to SWITCHES. |
| 1837 | Leaves point after the inserted text. |
| 1838 | Optional third arg WILDCARD means treat FILE as shell wildcard. |
| 1839 | Optional fourth arg FULL-DIRECTORY-P means file is a directory and |
| 1840 | switches do not contain `d', so that a full listing is expected. |
| 1841 | |
| 1842 | This works by running a directory listing program |
| 1843 | whose name is in the variable `insert-directory-program'. |
| 1844 | If WILDCARD, it also runs the shell specified by `shell-file-name'." |
| 1845 | (let ((handler (find-file-name-handler file))) |
| 1846 | (if handler |
| 1847 | (funcall handler 'insert-directory file switches |
| 1848 | wildcard full-directory-p) |
| 1849 | (if (eq system-type 'vax-vms) |
| 1850 | (vms-read-directory file switches (current-buffer)) |
| 1851 | (if wildcard |
| 1852 | (let ((default-directory (file-name-directory file))) |
| 1853 | (call-process shell-file-name nil t nil |
| 1854 | "-c" (concat insert-directory-program |
| 1855 | " -d " switches " " |
| 1856 | (file-name-nondirectory file)))) |
| 1857 | ;; Barry Margolin says: "SunOS 4.1.3 (and SV and POSIX?) |
| 1858 | ;; lists the link if we give a link to a directory - yuck!" |
| 1859 | ;; That's why we used to chase symlinks. But we don't want |
| 1860 | ;; to chase links before passing the filename to ls; that |
| 1861 | ;; would mean that our line of output would not display |
| 1862 | ;; FILE's name as given. To really address the problem that |
| 1863 | ;; SunOS 4.1.3 has, we need to find the right switch to get |
| 1864 | ;; a description of the link itself. |
| 1865 | ;; (let (symlink) |
| 1866 | ;; (while (setq symlink (file-symlink-p file)) |
| 1867 | ;; (setq file symlink))) |
| 1868 | (call-process insert-directory-program nil t nil switches file)))))) |
| 1869 | |
| 1870 | (defun save-buffers-kill-emacs (&optional arg) |
| 1871 | "Offer to save each buffer, then kill this Emacs process. |
| 1872 | With prefix arg, silently save all file-visiting buffers, then kill." |
| 1873 | (interactive "P") |
| 1874 | (save-some-buffers arg t) |
| 1875 | (and (or (not (memq t (mapcar (function |
| 1876 | (lambda (buf) (and (buffer-file-name buf) |
| 1877 | (buffer-modified-p buf)))) |
| 1878 | (buffer-list)))) |
| 1879 | (yes-or-no-p "Modified buffers exist; exit anyway? ")) |
| 1880 | (or (not (fboundp 'process-list)) |
| 1881 | ;; process-list is not defined on VMS. |
| 1882 | (let ((processes (process-list)) |
| 1883 | active) |
| 1884 | (while processes |
| 1885 | (and (memq (process-status (car processes)) '(run stop open)) |
| 1886 | (let ((val (process-kill-without-query (car processes)))) |
| 1887 | (process-kill-without-query (car processes) val) |
| 1888 | val) |
| 1889 | (setq active t)) |
| 1890 | (setq processes (cdr processes))) |
| 1891 | (or (not active) |
| 1892 | (yes-or-no-p "Active processes exist; kill them and exit anyway? ")))) |
| 1893 | (kill-emacs))) |
| 1894 | \f |
| 1895 | (define-key ctl-x-map "\C-f" 'find-file) |
| 1896 | (define-key ctl-x-map "\C-q" 'toggle-read-only) |
| 1897 | (define-key ctl-x-map "\C-r" 'find-file-read-only) |
| 1898 | (define-key ctl-x-map "\C-v" 'find-alternate-file) |
| 1899 | (define-key ctl-x-map "\C-s" 'save-buffer) |
| 1900 | (define-key ctl-x-map "s" 'save-some-buffers) |
| 1901 | (define-key ctl-x-map "\C-w" 'write-file) |
| 1902 | (define-key ctl-x-map "i" 'insert-file) |
| 1903 | (define-key esc-map "~" 'not-modified) |
| 1904 | (define-key ctl-x-map "\C-d" 'list-directory) |
| 1905 | (define-key ctl-x-map "\C-c" 'save-buffers-kill-emacs) |
| 1906 | |
| 1907 | (define-key ctl-x-4-map "f" 'find-file-other-window) |
| 1908 | (define-key ctl-x-4-map "r" 'find-file-read-only-other-window) |
| 1909 | (define-key ctl-x-4-map "\C-f" 'find-file-other-window) |
| 1910 | (define-key ctl-x-4-map "b" 'switch-to-buffer-other-window) |
| 1911 | (define-key ctl-x-4-map "\C-o" 'display-buffer) |
| 1912 | |
| 1913 | (define-key ctl-x-5-map "b" 'switch-to-buffer-other-frame) |
| 1914 | (define-key ctl-x-5-map "f" 'find-file-other-frame) |
| 1915 | (define-key ctl-x-5-map "\C-f" 'find-file-other-frame) |
| 1916 | (define-key ctl-x-5-map "r" 'find-file-read-only-other-frame) |
| 1917 | |
| 1918 | ;;; files.el ends here |