lisp/vc-svn.el

   1 ;;; vc-svn.el --- non-resident support for Subversion version-control
   2
   3 ;; Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
   4
   5 ;; Author:      FSF (see vc.el for full credits)
   6 ;; Maintainer:  Stefan Monnier <monnier@gnu.org>
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23 ;; Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; This is preliminary support for Subversion (http://subversion.tigris.org/).
  28 ;; It started as `sed s/cvs/svn/ vc.cvs.el' (from version 1.56)
  29 ;; and hasn't been completely fixed since.
  30
  31 ;; Sync'd with Subversion's vc-svn.el as of revision 5801.
  32
  33 ;;; Bugs:
  34
  35 ;; - VC-dired is (really) slow.
  36
  37 ;;; Code:
  38
  39 (eval-when-compile
  40   (require 'vc))
  41
  42 ;;;
  43 ;;; Customization options
  44 ;;;
  45
  46 (defcustom vc-svn-global-switches nil
  47   "*Global switches to pass to any SVN command."
  48   :type '(choice (const :tag "None" nil)
  49                  (string :tag "Argument String")
  50                  (repeat :tag "Argument List"
  51                          :value ("")
  52                          string))
  53   :version "22.1"
  54   :group 'vc)
  55
  56 (defcustom vc-svn-register-switches nil
  57   "*Extra switches for registering a file into SVN.
  58 A string or list of strings passed to the checkin program by
  59 \\[vc-register]."
  60   :type '(choice (const :tag "None" nil)
  61                  (string :tag "Argument String")
  62                  (repeat :tag "Argument List"
  63                          :value ("")
  64                          string))
  65   :version "22.1"
  66   :group 'vc)
  67
  68 (defcustom vc-svn-diff-switches
  69   t                        ;`svn' doesn't support common args like -c or -b.
  70   "String or list of strings specifying extra switches for svn diff under VC.
  71 If nil, use the value of `vc-diff-switches'.
  72 If you want to force an empty list of arguments, use t."
  73   :type '(choice (const :tag "Unspecified" nil)
  74                  (const :tag "None" t)
  75                  (string :tag "Argument String")
  76                  (repeat :tag "Argument List"
  77                          :value ("")
  78                          string))
  79   :version "22.1"
  80   :group 'vc)
  81
  82 (defcustom vc-svn-header (or (cdr (assoc 'SVN vc-header-alist)) '("\$Id\$"))
  83   "*Header keywords to be inserted by `vc-insert-headers'."
  84   :version "22.1"
  85   :type '(repeat string)
  86   :group 'vc)
  87
  88 (defconst vc-svn-use-edit nil
  89   ;; Subversion does not provide this feature (yet).
  90   "*Non-nil means to use `svn edit' to \"check out\" a file.
  91 This is only meaningful if you don't use the implicit checkout model
  92 \(i.e. if you have $SVNREAD set)."
  93   ;; :type 'boolean
  94   ;; :version "22.1"
  95   ;; :group 'vc
  96   )
  97
  98 ;;;
  99 ;;; State-querying functions
 100 ;;;
 101
 102 ;;;###autoload (defun vc-svn-registered (f)
 103 ;;;###autoload   (when (file-readable-p (expand-file-name
 104 ;;;###autoload                    ".svn/entries" (file-name-directory f)))
 105 ;;;###autoload       (load "vc-svn")
 106 ;;;###autoload       (vc-svn-registered f)))
 107
 108 ;;;###autoload
 109 (add-to-list 'completion-ignored-extensions ".svn/")
 110
 111 (defun vc-svn-registered (file)
 112   "Check if FILE is SVN registered."
 113   (when (file-readable-p (expand-file-name ".svn/entries"
 114                                            (file-name-directory file)))
 115     (with-temp-buffer
 116       (cd (file-name-directory file))
 117       (let ((status
 118              (condition-case nil
 119                  ;; Ignore all errors.
 120                  (vc-svn-command t t file "status" "-v")
 121                ;; Some problem happened.  E.g. We can't find an `svn'
 122                ;; executable.  We used to only catch `file-error' but when
 123                ;; the process is run on a remote host via Tramp, the error
 124                ;; is only reported via the exit status which is turned into
 125                ;; an `error' by vc-do-command.
 126                (error nil))))
 127         (when (eq 0 status)
 128           (vc-svn-parse-status t)
 129           (eq 'SVN (vc-file-getprop file 'vc-backend)))))))
 130
 131 (defun vc-svn-state (file &optional localp)
 132   "SVN-specific version of `vc-state'."
 133   (setq localp (or localp (vc-stay-local-p file)))
 134   (with-temp-buffer
 135     (cd (file-name-directory file))
 136     (vc-svn-command t 0 file "status" (if localp "-v" "-u"))
 137     (vc-svn-parse-status localp)
 138     (vc-file-getprop file 'vc-state)))
 139
 140 (defun vc-svn-state-heuristic (file)
 141   "SVN-specific state heuristic."
 142   (vc-svn-state file 'local))
 143
 144 (defun vc-svn-dir-state (dir &optional localp)
 145   "Find the SVN state of all files in DIR."
 146   (setq localp (or localp (vc-stay-local-p dir)))
 147   (let ((default-directory dir))
 148     ;; Don't specify DIR in this command, the default-directory is
 149     ;; enough.  Otherwise it might fail with remote repositories.
 150     (with-temp-buffer
 151       (vc-svn-command t 0 nil "status" (if localp "-v" "-u"))
 152       (vc-svn-parse-status localp))))
 153
 154 (defun vc-svn-workfile-version (file)
 155   "SVN-specific version of `vc-workfile-version'."
 156   ;; There is no need to consult RCS headers under SVN, because we
 157   ;; get the workfile version for free when we recognize that a file
 158   ;; is registered in SVN.
 159   (vc-svn-registered file)
 160   (vc-file-getprop file 'vc-workfile-version))
 161
 162 (defun vc-svn-checkout-model (file)
 163   "SVN-specific version of `vc-checkout-model'."
 164   ;; It looks like Subversion has no equivalent of CVSREAD.
 165   'implicit)
 166
 167 ;; vc-svn-mode-line-string doesn't exist because the default implementation
 168 ;; works just fine.
 169
 170 (defun vc-svn-dired-state-info (file)
 171   "SVN-specific version of `vc-dired-state-info'."
 172   (let ((svn-state (vc-state file)))
 173     (cond ((eq svn-state 'edited)
 174            (if (equal (vc-workfile-version file) "0")
 175                "(added)" "(modified)"))
 176           ((eq svn-state 'needs-patch) "(patch)")
 177           ((eq svn-state 'needs-merge) "(merge)"))))
 178
 179 (defun vc-svn-previous-version (file rev)
 180   (let ((newrev (1- (string-to-number rev))))
 181     (when (< 0 newrev)
 182       (number-to-string newrev))))
 183
 184 (defun vc-svn-next-version (file rev)
 185   (let ((newrev (1+ (string-to-number rev))))
 186     ;; The "workfile version" is an uneasy conceptual fit under Subversion;
 187     ;; we use it as the upper bound until a better idea comes along.  If the
 188     ;; workfile version W coincides with the tree's latest revision R, then
 189     ;; this check prevents a "no such revision: R+1" error.  Otherwise, it
 190     ;; inhibits showing of W+1 through R, which could be considered anywhere
 191     ;; from gracious to impolite.
 192     (unless (< (string-to-number (vc-file-getprop file 'vc-workfile-version))
 193                newrev)
 194       (number-to-string newrev))))
 195
 196
 197 ;;;
 198 ;;; State-changing functions
 199 ;;;
 200
 201 (defun vc-svn-register (file &optional rev comment)
 202   "Register FILE into the SVN version-control system.
 203 COMMENT can be used to provide an initial description of FILE.
 204
 205 `vc-register-switches' and `vc-svn-register-switches' are passed to
 206 the SVN command (in that order)."
 207   (apply 'vc-svn-command nil 0 file "add" (vc-switches 'SVN 'register)))
 208
 209 (defun vc-svn-responsible-p (file)
 210   "Return non-nil if SVN thinks it is responsible for FILE."
 211   (file-directory-p (expand-file-name ".svn"
 212                                       (if (file-directory-p file)
 213                                           file
 214                                         (file-name-directory file)))))
 215
 216 (defalias 'vc-svn-could-register 'vc-svn-responsible-p
 217   "Return non-nil if FILE could be registered in SVN.
 218 This is only possible if SVN is responsible for FILE's directory.")
 219
 220 (defun vc-svn-checkin (file rev comment)
 221   "SVN-specific version of `vc-backend-checkin'."
 222   (let ((status (apply
 223                  'vc-svn-command nil 1 file "ci"
 224                  (nconc (list "-m" comment) (vc-switches 'SVN 'checkin)))))
 225     (set-buffer "*vc*")
 226     (goto-char (point-min))
 227     (unless (equal status 0)
 228       ;; Check checkin problem.
 229       (cond
 230        ((search-forward "Transaction is out of date" nil t)
 231         (vc-file-setprop file 'vc-state 'needs-merge)
 232         (error (substitute-command-keys
 233                 (concat "Up-to-date check failed: "
 234                         "type \\[vc-next-action] to merge in changes"))))
 235        (t
 236         (pop-to-buffer (current-buffer))
 237         (goto-char (point-min))
 238         (shrink-window-if-larger-than-buffer)
 239         (error "Check-in failed"))))
 240     ;; Update file properties
 241     ;; (vc-file-setprop
 242     ;;  file 'vc-workfile-version
 243     ;;  (vc-parse-buffer "^\\(new\\|initial\\) revision: \\([0-9.]+\\)" 2))
 244     ))
 245
 246 (defun vc-svn-find-version (file rev buffer)
 247   (apply 'vc-svn-command
 248          buffer 0 file
 249          "cat"
 250          (and rev (not (string= rev ""))
 251               (concat "-r" rev))
 252          (vc-switches 'SVN 'checkout)))
 253
 254 (defun vc-svn-checkout (file &optional editable rev)
 255   (message "Checking out %s..." file)
 256   (with-current-buffer (or (get-file-buffer file) (current-buffer))
 257     (vc-call update file editable rev (vc-switches 'SVN 'checkout)))
 258   (vc-mode-line file)
 259   (message "Checking out %s...done" file))
 260
 261 (defun vc-svn-update (file editable rev switches)
 262   (if (and (file-exists-p file) (not rev))
 263       ;; If no revision was specified, just make the file writable
 264       ;; if necessary (using `svn-edit' if requested).
 265       (and editable (not (eq (vc-svn-checkout-model file) 'implicit))
 266            (if vc-svn-use-edit
 267                (vc-svn-command nil 0 file "edit")
 268              (set-file-modes file (logior (file-modes file) 128))
 269              (if (equal file buffer-file-name) (toggle-read-only -1))))
 270     ;; Check out a particular version (or recreate the file).
 271     (vc-file-setprop file 'vc-workfile-version nil)
 272     (apply 'vc-svn-command nil 0 file
 273            "update"
 274            ;; default for verbose checkout: clear the sticky tag so
 275            ;; that the actual update will get the head of the trunk
 276            (cond
 277             ((null rev) "-rBASE")
 278             ((or (eq rev t) (equal rev "")) nil)
 279             (t (concat "-r" rev)))
 280            switches)))
 281
 282 (defun vc-svn-delete-file (file)
 283   (vc-svn-command nil 0 file "remove"))
 284
 285 (defun vc-svn-rename-file (old new)
 286   (vc-svn-command nil 0 new "move" (file-relative-name old)))
 287
 288 (defun vc-svn-revert (file &optional contents-done)
 289   "Revert FILE to the version it was based on."
 290   (unless contents-done
 291     (vc-svn-command nil 0 file "revert"))
 292   (unless (eq (vc-checkout-model file) 'implicit)
 293     (if vc-svn-use-edit
 294         (vc-svn-command nil 0 file "unedit")
 295       ;; Make the file read-only by switching off all w-bits
 296       (set-file-modes file (logand (file-modes file) 3950)))))
 297
 298 (defun vc-svn-merge (file first-version &optional second-version)
 299   "Merge changes into current working copy of FILE.
 300 The changes are between FIRST-VERSION and SECOND-VERSION."
 301   (vc-svn-command nil 0 file
 302                  "merge"
 303                  "-r" (if second-version
 304                         (concat first-version ":" second-version)
 305                       first-version))
 306   (vc-file-setprop file 'vc-state 'edited)
 307   (with-current-buffer (get-buffer "*vc*")
 308     (goto-char (point-min))
 309     (if (looking-at "C  ")
 310         1                               ; signal conflict
 311       0)))                              ; signal success
 312
 313 (defun vc-svn-merge-news (file)
 314   "Merge in any new changes made to FILE."
 315   (message "Merging changes into %s..." file)
 316   ;; (vc-file-setprop file 'vc-workfile-version nil)
 317   (vc-file-setprop file 'vc-checkout-time 0)
 318   (vc-svn-command nil 0 file "update")
 319   ;; Analyze the merge result reported by SVN, and set
 320   ;; file properties accordingly.
 321   (with-current-buffer (get-buffer "*vc*")
 322     (goto-char (point-min))
 323     ;; get new workfile version
 324     (if (re-search-forward
 325          "^\\(Updated to\\|At\\) revision \\([0-9]+\\)" nil t)
 326         (vc-file-setprop file 'vc-workfile-version (match-string 2))
 327       (vc-file-setprop file 'vc-workfile-version nil))
 328     ;; get file status
 329     (goto-char (point-min))
 330     (prog1
 331         (if (looking-at "At revision")
 332             0 ;; there were no news; indicate success
 333           (if (re-search-forward
 334                (concat "^\\([CGDU]  \\)?"
 335                        (regexp-quote (file-name-nondirectory file)))
 336                nil t)
 337               (cond
 338                ;; Merge successful, we are in sync with repository now
 339                ((string= (match-string 1) "U  ")
 340                 (vc-file-setprop file 'vc-state 'up-to-date)
 341                 (vc-file-setprop file 'vc-checkout-time
 342                                  (nth 5 (file-attributes file)))
 343                 0);; indicate success to the caller
 344                ;; Merge successful, but our own changes are still in the file
 345                ((string= (match-string 1) "G  ")
 346                 (vc-file-setprop file 'vc-state 'edited)
 347                 0);; indicate success to the caller
 348                ;; Conflicts detected!
 349                (t
 350                 (vc-file-setprop file 'vc-state 'edited)
 351                 1);; signal the error to the caller
 352                )
 353             (pop-to-buffer "*vc*")
 354             (error "Couldn't analyze svn update result")))
 355       (message "Merging changes into %s...done" file))))
 356
 357
 358 ;;;
 359 ;;; History functions
 360 ;;;
 361
 362 (defun vc-svn-print-log (file &optional buffer)
 363   "Get change log associated with FILE."
 364   (save-current-buffer
 365     (vc-setup-buffer buffer)
 366     (let ((inhibit-read-only t))
 367       (goto-char (point-min))
 368       ;; Add a line to tell log-view-mode what file this is.
 369       (insert "Working file: " (file-relative-name file) "\n"))
 370     (vc-svn-command
 371      buffer
 372      (if (and (vc-stay-local-p file) (fboundp 'start-process)) 'async 0)
 373      file "log"
 374      ;; By default Subversion only shows the log upto the working version,
 375      ;; whereas we also want the log of the subsequent commits.  At least
 376      ;; that's what the vc-cvs.el code does.
 377      "-rHEAD:0")))
 378
 379 (defun vc-svn-diff (file &optional oldvers newvers buffer)
 380   "Get a difference report using SVN between two versions of FILE."
 381   (unless buffer (setq buffer "*vc-diff*"))
 382   (if (and oldvers (equal oldvers (vc-workfile-version file)))
 383       ;; Use nil rather than the current revision because svn handles it
 384       ;; better (i.e. locally).
 385       (setq oldvers nil))
 386   (if (string= (vc-workfile-version file) "0")
 387       ;; This file is added but not yet committed; there is no master file.
 388       (if (or oldvers newvers)
 389           (error "No revisions of %s exist" file)
 390         ;; We regard this as "changed".
 391         ;; Diff it against /dev/null.
 392         ;; Note: this is NOT a "svn diff".
 393         (apply 'vc-do-command buffer
 394                1 "diff" file
 395                (append (vc-switches nil 'diff) '("/dev/null")))
 396         ;; Even if it's empty, it's locally modified.
 397         1)
 398     (let* ((switches
 399             (if vc-svn-diff-switches
 400                 (vc-switches 'SVN 'diff)
 401               (list "-x" (mapconcat 'identity (vc-switches nil 'diff) " "))))
 402            (async (and (not vc-disable-async-diff)
 403                        (vc-stay-local-p file)
 404                        (or oldvers newvers) ; Svn diffs those locally.
 405                        (fboundp 'start-process))))
 406       (apply 'vc-svn-command buffer
 407              (if async 'async 0)
 408              file "diff"
 409              (append
 410               switches
 411               (when oldvers
 412                 (list "-r" (if newvers (concat oldvers ":" newvers)
 413                              oldvers)))))
 414       (if async 1                     ; async diff => pessimistic assumption
 415         ;; For some reason `svn diff' does not return a useful
 416         ;; status w.r.t whether the diff was empty or not.
 417         (buffer-size (get-buffer buffer))))))
 418
 419 (defun vc-svn-diff-tree (dir &optional rev1 rev2)
 420   "Diff all files at and below DIR."
 421   (vc-svn-diff (file-name-as-directory dir) rev1 rev2))
 422
 423 ;;;
 424 ;;; Snapshot system
 425 ;;;
 426
 427 (defun vc-svn-create-snapshot (dir name branchp)
 428   "Assign to DIR's current version a given NAME.
 429 If BRANCHP is non-nil, the name is created as a branch (and the current
 430 workspace is immediately moved to that new branch).
 431 NAME is assumed to be a URL."
 432   (vc-svn-command nil 0 dir "copy" name)
 433   (when branchp (vc-svn-retrieve-snapshot dir name nil)))
 434
 435 (defun vc-svn-retrieve-snapshot (dir name update)
 436   "Retrieve a snapshot at and below DIR.
 437 NAME is the name of the snapshot; if it is empty, do a `svn update'.
 438 If UPDATE is non-nil, then update (resynch) any affected buffers.
 439 NAME is assumed to be a URL."
 440   (vc-svn-command nil 0 dir "switch" name)
 441   ;; FIXME: parse the output and obey `update'.
 442   )
 443
 444 ;;;
 445 ;;; Miscellaneous
 446 ;;;
 447
 448 ;; Subversion makes backups for us, so don't bother.
 449 ;; (defalias 'vc-svn-make-version-backups-p 'vc-stay-local-p
 450 ;;   "Return non-nil if version backups should be made for FILE.")
 451
 452 (defun vc-svn-check-headers ()
 453   "Check if the current file has any headers in it."
 454   (save-excursion
 455     (goto-char (point-min))
 456     (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\
 457 \\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t)))
 458
 459
 460 ;;;
 461 ;;; Internal functions
 462 ;;;
 463
 464 (defun vc-svn-command (buffer okstatus file &rest flags)
 465   "A wrapper around `vc-do-command' for use in vc-svn.el.
 466 The difference to vc-do-command is that this function always invokes `svn',
 467 and that it passes `vc-svn-global-switches' to it before FLAGS."
 468   (apply 'vc-do-command buffer okstatus "svn" file
 469          (if (stringp vc-svn-global-switches)
 470              (cons vc-svn-global-switches flags)
 471            (append vc-svn-global-switches
 472                    flags))))
 473
 474 (defun vc-svn-repository-hostname (dirname)
 475   (with-temp-buffer
 476     (let ((coding-system-for-read
 477            (or file-name-coding-system
 478                default-file-name-coding-system)))
 479       (vc-insert-file (expand-file-name ".svn/entries" dirname)))
 480     (goto-char (point-min))
 481     (when (re-search-forward
 482            ;; Old `svn' used name="svn:dir", newer use just name="".
 483            (concat "name=\"\\(?:svn:this_dir\\)?\"[\n\t ]*"
 484                    "\\(?:[-a-z]+=\"[^\"]*\"[\n\t ]*\\)*?"
 485                    "url=\"\\([^\"]+\\)\"") nil t)
 486       ;; This is not a hostname but a URL.  This may actually be considered
 487       ;; as a feature since it allows vc-svn-stay-local to specify different
 488       ;; behavior for different modules on the same server.
 489       (match-string 1))))
 490
 491 (defun vc-svn-parse-status (localp)
 492   "Parse output of \"svn status\" command in the current buffer.
 493 Set file properties accordingly.  Unless FULL is t, parse only
 494 essential information."
 495   (let (file status)
 496     (goto-char (point-min))
 497     (while (re-search-forward
 498             "^[ ADMCI?!~][ MC][ L][ +][ S]..\\([ *]\\) +\\([-0-9]+\\) +\\([0-9?]+\\) +\\([^ ]+\\) +" nil t)
 499       (setq file (expand-file-name
 500                   (buffer-substring (point) (line-end-position))))
 501       (setq status (char-after (line-beginning-position)))
 502       (unless (eq status ??)
 503         (vc-file-setprop file 'vc-backend 'SVN)
 504         ;; Use the last-modified revision, so that searching in vc-print-log
 505         ;; output works.
 506         (vc-file-setprop file 'vc-workfile-version (match-string 3))
 507         (vc-file-setprop
 508          file 'vc-state
 509          (cond
 510           ((eq status ?\ )
 511            (if (eq (char-after (match-beginning 1)) ?*)
 512                'needs-patch
 513              (vc-file-setprop file 'vc-checkout-time
 514                               (nth 5 (file-attributes file)))
 515              'up-to-date))
 516           ((eq status ?A)
 517            ;; If the file was actually copied, (match-string 2) is "-".
 518            (vc-file-setprop file 'vc-workfile-version "0")
 519            (vc-file-setprop file 'vc-checkout-time 0)
 520            'edited)
 521           ((memq status '(?M ?C))
 522            (if (eq (char-after (match-beginning 1)) ?*)
 523                'needs-merge
 524              'edited))
 525           (t 'edited)))))))
 526
 527 (defun vc-svn-dir-state-heuristic (dir)
 528   "Find the SVN state of all files in DIR, using only local information."
 529   (vc-svn-dir-state dir 'local))
 530
 531 (defun vc-svn-valid-symbolic-tag-name-p (tag)
 532   "Return non-nil if TAG is a valid symbolic tag name."
 533   ;; According to the SVN manual, a valid symbolic tag must start with
 534   ;; an uppercase or lowercase letter and can contain uppercase and
 535   ;; lowercase letters, digits, `-', and `_'.
 536   (and (string-match "^[a-zA-Z]" tag)
 537        (not (string-match "[^a-z0-9A-Z-_]" tag))))
 538
 539 (defun vc-svn-valid-version-number-p (tag)
 540   "Return non-nil if TAG is a valid version number."
 541   (and (string-match "^[0-9]" tag)
 542        (not (string-match "[^0-9]" tag))))
 543
 544 ;; Support for `svn annotate'
 545
 546 (defun vc-svn-annotate-command (file buf &optional rev)
 547   (vc-svn-command buf 0 file "annotate" (if rev (concat "-r" rev))))
 548
 549 (defun vc-svn-annotate-time-of-rev (rev)
 550   ;; Arbitrarily assume 10 commmits per day.
 551   (/ (string-to-number rev) 10.0))
 552
 553 (defun vc-svn-annotate-current-time ()
 554   (vc-svn-annotate-time-of-rev vc-annotate-parent-rev))
 555
 556 (defconst vc-svn-annotate-re "[ \t]*\\([0-9]+\\)[ \t]+[^\t ]+ ")
 557
 558 (defun vc-svn-annotate-time ()
 559   (when (looking-at vc-svn-annotate-re)
 560     (goto-char (match-end 0))
 561     (vc-svn-annotate-time-of-rev (match-string 1))))
 562
 563 (defun vc-svn-annotate-extract-revision-at-line ()
 564   (save-excursion
 565     (beginning-of-line)
 566     (if (looking-at vc-svn-annotate-re) (match-string 1))))
 567
 568 (provide 'vc-svn)
 569
 570 ;; arch-tag: 02f10c68-2b4d-453a-90fc-1eee6cfb268d
 571 ;;; vc-svn.el ends here