X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/18e1f24981ba72ede1fb434568e18ed0e46debbd..d0fc47eda0459c486dd114eee8674df1a6e4bc6a:/lisp/vc-hg.el
diff --git a/lisp/vc-hg.el b/lisp/vc-hg.el
index 5c2cc35229..bfc4846a5d 100644
--- a/lisp/vc-hg.el
+++ b/lisp/vc-hg.el
@@ -1,16 +1,16 @@
;;; vc-hg.el --- VC backend for the mercurial version control system
-;; Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+;; Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Ivan Kanis
;; Keywords: tools
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -18,9 +18,7 @@
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see .
;;; Commentary:
@@ -34,7 +32,7 @@
;;; Todo:
-;; Implement the rest of the vc interface. See the comment at the
+;; 1) Implement the rest of the vc interface. See the comment at the
;; beginning of vc.el. The current status is:
;; FUNCTION NAME STATUS
@@ -43,53 +41,52 @@
;; STATE-QUERYING FUNCTIONS
;; * registered (file) OK
;; * state (file) OK
-;; - state-heuristic (file) ?? PROBABLY NOT NEEDED
-;; - dir-state (dir) OK
+;; - state-heuristic (file) NOT NEEDED
+;; - dir-status (dir update-function) OK
+;; - dir-status-files (dir files ds uf) OK
+;; - status-extra-headers (dir) OK
+;; - status-printer (fileinfo) OK
;; * working-revision (file) OK
;; - latest-on-branch-p (file) ??
-;; * checkout-model (file) OK
+;; * checkout-model (files) OK
;; - workfile-unchanged-p (file) OK
;; - mode-line-string (file) NOT NEEDED
-;; - dired-state-info (file) OK
;; STATE-CHANGING FUNCTIONS
;; * register (files &optional rev comment) OK
;; * create-repo () OK
-;; - init-revision () NOT NEEDED
+;; - init-revision () NOT NEEDED
;; - responsible-p (file) OK
;; - could-register (file) OK
;; - receive-file (file rev) ?? PROBABLY NOT NEEDED
;; - unregister (file) COMMENTED OUT, MAY BE INCORRECT
;; * checkin (files rev comment) OK
-;; * find-revision (file rev buffer) OK
+;; * find-revision (file rev buffer) OK
;; * checkout (file &optional editable rev) OK
;; * revert (file &optional contents-done) OK
-;; - rollback (files) ?? PROBABLY NOT NEEDED
+;; - rollback (files) ?? PROBABLY NOT NEEDED
;; - merge (file rev1 rev2) NEEDED
;; - merge-news (file) NEEDED
-;; - steal-lock (file &optional revision) NOT NEEDED
+;; - steal-lock (file &optional revision) NOT NEEDED
;; HISTORY FUNCTIONS
;; * print-log (files &optional buffer) OK
;; - log-view-mode () OK
-;; - show-log-entry (revision) NOT NEEDED, DEFAULT IS GOOD
-;; - wash-log (file) ??
-;; - logentry-check () NOT NEEDED
+;; - show-log-entry (revision) NOT NEEDED, DEFAULT IS GOOD
;; - comment-history (file) NOT NEEDED
;; - update-changelog (files) NOT NEEDED
;; * diff (files &optional rev1 rev2 buffer) OK
;; - revision-completion-table (files) OK?
;; - annotate-command (file buf &optional rev) OK
;; - annotate-time () OK
-;; - annotate-current-time () ?? NOT NEEDED
+;; - annotate-current-time () NOT NEEDED
;; - annotate-extract-revision-at-line () OK
-;; SNAPSHOT SYSTEM
-;; - create-snapshot (dir name branchp) NEEDED (probably branch?)
-;; - assign-name (file name) NOT NEEDED
-;; - retrieve-snapshot (dir name update) ?? NEEDED??
+;; TAG SYSTEM
+;; - create-tag (dir name branchp) NEEDED
+;; - retrieve-tag (dir name update) NEEDED
;; MISCELLANEOUS
;; - make-version-backups-p (file) ??
-;; - repository-hostname (dirname) ??
-;; - previous-revision (file rev) OK
-;; - next-revision (file rev) OK
+;; - repository-hostname (dirname) ??
+;; - previous-revision (file rev) OK
+;; - next-revision (file rev) OK
;; - check-headers () ??
;; - clear-headers () ??
;; - delete-file (file) TEST IT
@@ -97,7 +94,7 @@
;; - find-file-hook () PROBABLY NOT NEEDED
;; - find-file-not-found-hook () PROBABLY NOT NEEDED
-;; Implement Stefan Monnier's advice:
+;; 2) Implement Stefan Monnier's advice:
;; vc-hg-registered and vc-hg-state
;; Both of those functions should be super extra careful to fail gracefully in
;; unexpected circumstances. The reason this is important is that any error
@@ -114,7 +111,8 @@
(eval-when-compile
(require 'cl)
- (require 'vc))
+ (require 'vc)
+ (require 'vc-dir))
;;; Customization options
@@ -131,8 +129,8 @@
;;; Properties of the backend
-(defun vc-hg-revision-granularity ()
- 'repository)
+(defun vc-hg-revision-granularity () 'repository)
+(defun vc-hg-checkout-model (files) 'implicit)
;;; State querying functions
@@ -143,15 +141,16 @@
;;;###autoload (load "vc-hg")
;;;###autoload (vc-hg-registered file))))
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-registered (file)
"Return non-nil if FILE is registered with hg."
(when (vc-hg-root file) ; short cut
- (vc-file-setprop file 'vc-state (vc-hg-state file)))) ; expensive
+ (let ((state (vc-hg-state file))) ; expensive
+ (and state (not (memq state '(ignored unregistered)))))))
(defun vc-hg-state (file)
"Hg-specific version of `vc-state'."
- (let*
+ (let*
((status nil)
(out
(with-output-to-string
@@ -162,54 +161,27 @@
;; Ignore all errors.
(call-process
"hg" nil t nil "--cwd" (file-name-directory file)
- "status" (file-name-nondirectory file))
+ "status" "-A" (file-name-nondirectory file))
;; Some problem happened. E.g. We can't find an `hg'
;; executable.
(error nil)))))))
(when (eq 0 status)
- (if (eq 0 (length out)) 'up-to-date
(when (null (string-match ".*: No such file or directory$" out))
(let ((state (aref out 0)))
(cond
- ((eq state ?A) 'edited)
+ ((eq state ?=) 'up-to-date)
+ ((eq state ?A) 'added)
((eq state ?M) 'edited)
- ((eq state ?R) nil)
- ((eq state ??) nil)
- (t 'up-to-date))))))))
-
-(defun vc-hg-dir-state (dir)
- (with-temp-buffer
- (buffer-disable-undo) ;; Because these buffers can get huge
- (vc-hg-command (current-buffer) nil nil "status")
- (goto-char (point-min))
- (let ((status-char nil)
- (file nil))
- (while (not (eobp))
- (setq status-char (char-after))
- (setq file
- (expand-file-name
- (buffer-substring-no-properties (+ (point) 2)
- (line-end-position))))
- (cond
- ;; The rest of the possible states in "hg status" output:
- ;; R = removed
- ;; ! = deleted, but still tracked
- ;; ? = not tracked
- ;; should not show up in vc-dired, so don't deal with them
- ;; here.
- ((eq status-char ?A)
- (vc-file-setprop file 'vc-working-revision "0")
- (vc-file-setprop file 'vc-state 'edited))
- ((eq status-char ?M)
- (vc-file-setprop file 'vc-state 'edited))
- ((eq status-char ??)
- (vc-file-setprop file 'vc-backend 'none)
- (vc-file-setprop file 'vc-state 'nil)))
- (forward-line)))))
+ ((eq state ?I) 'ignored)
+ ((eq state ?R) 'removed)
+ ((eq state ?!) 'missing)
+ ((eq state ??) 'unregistered)
+ ((eq state ?C) 'up-to-date) ;; Older mercurials use this
+ (t 'up-to-date)))))))
(defun vc-hg-working-revision (file)
"Hg-specific version of `vc-working-revision'."
- (let*
+ (let*
((status nil)
(out
(with-output-to-string
@@ -243,66 +215,66 @@
;; If the buffer exists from a previous invocation it might be
;; read-only.
(let ((inhibit-read-only t))
- ;; We need to loop and call "hg log" on each file separately.
- ;; "hg log" with multiple file arguments mashes all the logs
- ;; together. Ironically enough, this puts us back near CVS
- ;; which can't generate proper fileset logs either.
- (dolist (file files)
- (with-current-buffer
- buffer
- (insert "Working file: " file "\n")) ;; Like RCS/CVS.
- (vc-hg-command buffer 0 file "log"))))
+ (with-current-buffer
+ buffer
+ (vc-hg-command buffer 0 files "log"))))
(defvar log-view-message-re)
(defvar log-view-file-re)
(defvar log-view-font-lock-keywords)
+(defvar log-view-per-file-logs)
(define-derived-mode vc-hg-log-view-mode log-view-mode "Hg-Log-View"
(require 'add-log) ;; we need the add-log faces
- (set (make-local-variable 'log-view-file-re) "^Working file:[ \t]+\\(.+\\)")
+ (set (make-local-variable 'log-view-file-re) "\\`a\\`")
+ (set (make-local-variable 'log-view-per-file-logs) nil)
(set (make-local-variable 'log-view-message-re)
"^changeset:[ \t]*\\([0-9]+\\):\\(.+\\)")
(set (make-local-variable 'log-view-font-lock-keywords)
(append
log-view-font-lock-keywords
- ;; Handle the case:
- ;; user: foo@bar
- '(("^user:[ \t]+\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)"
- (1 'change-log-email))
+ '(
;; Handle the case:
;; user: FirstName LastName
("^user:[ \t]+\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)[>)]"
(1 'change-log-name)
(2 'change-log-email))
+ ;; Handle the cases:
+ ;; user: foo@bar
+ ;; and
+ ;; user: foo
+ ("^user:[ \t]+\\([A-Za-z0-9_.+-]+\\(?:@[A-Za-z0-9_.-]+\\)?\\)"
+ (1 'change-log-email))
("^date: \\(.+\\)" (1 'change-log-date))
("^summary:[ \t]+\\(.+\\)" (1 'log-view-message))))))
(defun vc-hg-diff (files &optional oldvers newvers buffer)
"Get a difference report using hg between two revisions of FILES."
- (let ((working (vc-working-revision (car files))))
- (if (and (equal oldvers working) (not newvers))
- (setq oldvers nil))
- (if (and (not oldvers) newvers)
- (setq oldvers working))
+ (let* ((firstfile (car files))
+ (working (and firstfile (vc-working-revision firstfile))))
+ (when (and (equal oldvers working) (not newvers))
+ (setq oldvers nil))
+ (when (and (not oldvers) newvers)
+ (setq oldvers working))
(apply #'vc-hg-command (or buffer "*vc-diff*") nil
(mapcar (lambda (file) (file-name-nondirectory file)) files)
- "--cwd" (file-name-directory (car files))
+ "--cwd" (or (when firstfile (file-name-directory firstfile))
+ (expand-file-name default-directory))
"diff"
(append
- (if oldvers
- (if newvers
- (list "-r" oldvers "-r" newvers)
- (list "-r" oldvers))
- (list ""))))))
+ (when oldvers
+ (if newvers
+ (list "-r" oldvers "-r" newvers)
+ (list "-r" oldvers)))))))
(defun vc-hg-revision-table (files)
(let ((default-directory (file-name-directory (car files))))
(with-temp-buffer
(vc-hg-command t nil files "log" "--template" "{rev} ")
- (split-string
+ (split-string
(buffer-substring-no-properties (point-min) (point-max))))))
-;; Modelled after the similar function in vc-cvs.el
+;; Modeled after the similar function in vc-cvs.el
(defun vc-hg-revision-completion-table (files)
(lexical-let ((files files)
table)
@@ -313,17 +285,23 @@
(defun vc-hg-annotate-command (file buffer &optional revision)
"Execute \"hg annotate\" on FILE, inserting the contents in BUFFER.
Optional arg REVISION is a revision to annotate from."
- (vc-hg-command buffer 0 file "annotate" "-d" "-n" (if revision (concat "-r" revision)))
+ (vc-hg-command buffer 0 file "annotate" "-d" "-n"
+ (when revision (concat "-r" revision)))
(with-current-buffer buffer
(goto-char (point-min))
- (re-search-forward "^[0-9]")
- (delete-region (point-min) (1- (point)))))
+ (re-search-forward "^[ \t]*[0-9]")
+ (delete-region (point-min) (match-beginning 0))))
+(declare-function vc-annotate-convert-time "vc-annotate" (time))
;; The format for one line output by "hg annotate -d -n" looks like this:
;;215 Wed Jun 20 21:22:58 2007 -0700: CONTENTS
;; i.e: VERSION_NUMBER DATE: CONTENTS
-(defconst vc-hg-annotate-re "^[ \t]*\\([0-9]+\\) \\(.\\{30\\}\\): ")
+;; If the user has set the "--follow" option, the output looks like:
+;;215 Wed Jun 20 21:22:58 2007 -0700 foo.c: CONTENTS
+;; i.e. VERSION_NUMBER DATE FILENAME: CONTENTS
+(defconst vc-hg-annotate-re
+ "^[ \t]*\\([0-9]+\\) \\(.\\{30\\}\\)[^:\n]*\\(:[^ \n][^:\n]*\\)*: ")
(defun vc-hg-annotate-time ()
(when (looking-at vc-hg-annotate-re)
@@ -334,7 +312,7 @@ Optional arg REVISION is a revision to annotate from."
(defun vc-hg-annotate-extract-revision-at-line ()
(save-excursion
(beginning-of-line)
- (if (looking-at vc-hg-annotate-re) (match-string-no-properties 1))))
+ (when (looking-at vc-hg-annotate-re) (match-string-no-properties 1))))
(defun vc-hg-previous-revision (file rev)
(let ((newrev (1- (string-to-number rev))))
@@ -343,7 +321,7 @@ Optional arg REVISION is a revision to annotate from."
(defun vc-hg-next-revision (file rev)
(let ((newrev (1+ (string-to-number rev)))
- (tip-revision
+ (tip-revision
(with-temp-buffer
(vc-hg-command t 0 nil "tip")
(goto-char (point-min))
@@ -354,7 +332,7 @@ Optional arg REVISION is a revision to annotate from."
(when (<= newrev tip-revision)
(number-to-string newrev))))
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-delete-file (file)
"Delete FILE and delete it in the hg repository."
(condition-case ()
@@ -362,10 +340,10 @@ Optional arg REVISION is a revision to annotate from."
(file-error nil))
(vc-hg-command nil 0 file "remove" "--after" "--force"))
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-rename-file (old new)
"Rename file from OLD to NEW using `hg mv'."
- (vc-hg-command nil 0 new old "mv"))
+ (vc-hg-command nil 0 new "mv" old))
(defun vc-hg-register (files &optional rev comment)
"Register FILES under hg.
@@ -379,7 +357,7 @@ COMMENT is ignored."
(defalias 'vc-hg-responsible-p 'vc-hg-root)
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-could-register (file)
"Return non-nil if FILE could be registered under hg."
(and (vc-hg-responsible-p file) ; shortcut
@@ -390,7 +368,7 @@ COMMENT is ignored."
;; registered.
(error))))
-;; XXX This would remove the file. Is that correct?
+;; FIXME: This would remove the file. Is that correct?
;; (defun vc-hg-unregister (file)
;; "Unregister FILE from hg."
;; (vc-hg-command nil nil file "remove"))
@@ -407,7 +385,7 @@ REV is ignored."
(vc-hg-command buffer 0 file "cat" "-r" rev)
(vc-hg-command buffer 0 file "cat"))))
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-checkout (file &optional editable rev)
"Retrieve a revision of FILE.
EDITABLE is ignored.
@@ -419,31 +397,17 @@ REV is the revision to check out into WORKFILE."
(vc-hg-command t 0 file "cat" "-r" rev)
(vc-hg-command t 0 file "cat")))))
-(defun vc-hg-checkout-model (file)
- 'implicit)
-
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-workfile-unchanged-p (file)
(eq 'up-to-date (vc-hg-state file)))
-(defun vc-hg-dired-state-info (file)
- "Hg-specific version of `vc-dired-state-info'."
- (let ((hg-state (vc-state file)))
- (if (eq hg-state 'edited)
- (if (equal (vc-working-revision file) "0")
- "(added)" "(modified)")
- ;; fall back to the default VC representation
- (vc-default-dired-state-info 'Hg file))))
-
-;; Modelled after the similar function in vc-bzr.el
+;; Modeled after the similar function in vc-bzr.el
(defun vc-hg-revert (file &optional contents-done)
(unless contents-done
(with-temp-buffer (vc-hg-command t 0 file "revert"))))
;;; Hg specific functionality.
-;;; XXX This functionality is experimental/work in progress. It might
-;;; change without notice.
(defvar vc-hg-extra-menu-map
(let ((map (make-sparse-keymap)))
(define-key map [incoming] '(menu-item "Show incoming" vc-hg-incoming))
@@ -452,11 +416,118 @@ REV is the revision to check out into WORKFILE."
(defun vc-hg-extra-menu () vc-hg-extra-menu-map)
+(defun vc-hg-extra-status-menu () vc-hg-extra-menu-map)
+
(define-derived-mode vc-hg-outgoing-mode vc-hg-log-view-mode "Hg-Outgoing")
(define-derived-mode vc-hg-incoming-mode vc-hg-log-view-mode "Hg-Incoming")
-;; XXX this adds another top level menu, instead figure out how to
+(defstruct (vc-hg-extra-fileinfo
+ (:copier nil)
+ (:constructor vc-hg-create-extra-fileinfo (rename-state extra-name))
+ (:conc-name vc-hg-extra-fileinfo->))
+ rename-state ;; rename or copy state
+ extra-name) ;; original name for copies and rename targets, new name for
+
+(declare-function vc-default-status-printer "vc-dir" (backend fileentry))
+
+(defun vc-hg-status-printer (info)
+ "Pretty-printer for the vc-dir-fileinfo structure."
+ (let ((extra (vc-dir-fileinfo->extra info)))
+ (vc-default-status-printer 'Hg info)
+ (when extra
+ (insert (propertize
+ (format " (%s %s)"
+ (case (vc-hg-extra-fileinfo->rename-state extra)
+ ('copied "copied from")
+ ('renamed-from "renamed from")
+ ('renamed-to "renamed to"))
+ (vc-hg-extra-fileinfo->extra-name extra))
+ 'face 'font-lock-comment-face)))))
+
+(defun vc-hg-after-dir-status (update-function)
+ (let ((status-char nil)
+ (file nil)
+ (translation '((?= . up-to-date)
+ (?C . up-to-date)
+ (?A . added)
+ (?R . removed)
+ (?M . edited)
+ (?I . ignored)
+ (?! . missing)
+ (? . copy-rename-line)
+ (?? . unregistered)))
+ (translated nil)
+ (result nil)
+ (last-added nil)
+ (last-line-copy nil))
+ (goto-char (point-min))
+ (while (not (eobp))
+ (setq translated (cdr (assoc (char-after) translation)))
+ (setq file
+ (buffer-substring-no-properties (+ (point) 2)
+ (line-end-position)))
+ (cond ((not translated)
+ (setq last-line-copy nil))
+ ((eq translated 'up-to-date)
+ (setq last-line-copy nil))
+ ((eq translated 'copy-rename-line)
+ ;; For copied files the output looks like this:
+ ;; A COPIED_FILE_NAME
+ ;; ORIGINAL_FILE_NAME
+ (setf (nth 2 last-added)
+ (vc-hg-create-extra-fileinfo 'copied file))
+ (setq last-line-copy t))
+ ((and last-line-copy (eq translated 'removed))
+ ;; For renamed files the output looks like this:
+ ;; A NEW_FILE_NAME
+ ;; ORIGINAL_FILE_NAME
+ ;; R ORIGINAL_FILE_NAME
+ ;; We need to adjust the previous entry to not think it is a copy.
+ (setf (vc-hg-extra-fileinfo->rename-state (nth 2 last-added))
+ 'renamed-from)
+ (push (list file translated
+ (vc-hg-create-extra-fileinfo
+ 'renamed-to (nth 0 last-added))) result)
+ (setq last-line-copy nil))
+ (t
+ (setq last-added (list file translated nil))
+ (push last-added result)
+ (setq last-line-copy nil)))
+ (forward-line))
+ (funcall update-function result)))
+
+(defun vc-hg-dir-status (dir update-function)
+ (vc-hg-command (current-buffer) 'async dir "status" "-C")
+ (vc-exec-after
+ `(vc-hg-after-dir-status (quote ,update-function))))
+
+(defun vc-hg-dir-status-files (dir files default-state update-function)
+ (apply 'vc-hg-command (current-buffer) 'async dir "status" "-C" files)
+ (vc-exec-after
+ `(vc-hg-after-dir-status (quote ,update-function))))
+
+(defun vc-hg-status-extra-header (name &rest commands)
+ (concat (propertize name 'face 'font-lock-type-face)
+ (propertize
+ (with-temp-buffer
+ (apply 'vc-hg-command (current-buffer) 0 nil commands)
+ (buffer-substring-no-properties (point-min) (1- (point-max))))
+ 'face 'font-lock-variable-name-face)))
+
+(defun vc-hg-status-extra-headers (dir)
+ "Generate extra status headers for a Mercurial tree."
+ (let ((default-directory dir))
+ (concat
+ (vc-hg-status-extra-header "Root : " "root") "\n"
+ (vc-hg-status-extra-header "Branch : " "id" "-b") "\n"
+ (vc-hg-status-extra-header "Tags : " "id" "-t") ; "\n"
+ ;; these change after each commit
+ ;; (vc-hg-status-extra-header "Local num : " "id" "-n") "\n"
+ ;; (vc-hg-status-extra-header "Global id : " "id" "-i")
+ )))
+
+;; FIXME: this adds another top level menu, instead figure out how to
;; replace the Log-View menu.
(easy-menu-define log-view-mode-menu vc-hg-outgoing-mode-map
"Hg-outgoing Display Menu"
@@ -489,7 +560,7 @@ REV is the revision to check out into WORKFILE."
(interactive)
(let ((marked-list (log-view-get-marked)))
(if marked-list
- (vc-hg-command
+ (vc-hg-command
nil 0 nil
(cons "push"
(apply 'nconc
@@ -500,7 +571,7 @@ REV is the revision to check out into WORKFILE."
(interactive)
(let ((marked-list (log-view-get-marked)))
(if marked-list
- (vc-hg-command
+ (vc-hg-command
nil 0 nil
(cons "pull"
(apply 'nconc
@@ -513,7 +584,7 @@ REV is the revision to check out into WORKFILE."
"A wrapper around `vc-do-command' for use in vc-hg.el.
The difference to vc-do-command is that this function always invokes `hg',
and that it passes `vc-hg-global-switches' to it before FLAGS."
- (apply 'vc-do-command buffer okstatus "hg" file-or-list
+ (apply 'vc-do-command (or buffer "*vc*") okstatus "hg" file-or-list
(if (stringp vc-hg-global-switches)
(cons vc-hg-global-switches flags)
(append vc-hg-global-switches