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emacs-fossil 2020.09.20-4
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This is an autogenerated patch header for a single-debian-patch file. The
delta against upstream is either kept as a single patch, or maintained
in some VCS, and exported as a single patch instead of more manageable
atomic patches.

--- emacs-fossil-2020.09.20.orig/vc-fossil.el
+++ emacs-fossil-2020.09.20/vc-fossil.el
@@ -3,102 +3,114 @@
 ;; Author: Venkat Iyer <venkat@comit.com>
 
 ;; vc-fossil.el 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 of the License, or
-;; (at your option) any later version.
-
-;; vc-fossil.el is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
+;; it under the terms of the GNU General Public License as published
+;; by the Free Software Foundation, either version 3 of the License,
+;; or (at your option) any later version.
+
+;; vc-fossil.el is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
 
 ;; For a copy of the license, please see <http://www.gnu.org/licenses/>.
 
-
 ;;; Commentary:
 
 ;; This file contains a VC backend for the fossil version control
 ;; system.
 
-;;; Installation:
+;;; Todo:
 
-;; 1. Install this vc-fossil package.
-;; 2. Add "Fossil" to the list of VC backends using
-;;    M-x customize-variable vc-handled-backends
-
-;; Alternative manual installation
-;; 1. Put this file somewhere in the Emacs load-path.
-;; 2. Tell Emacs to load it when needed:
-;;    (autoload 'vc-fossil-registered "vc-fossil")
-;; 3. Add Fossil to the list of supported backends:
-;;    (add-to-list 'vc-handled-backends 'Fossil t)
+;; 1) Implement the rest of the vc interface.  See the comment at the
+;; beginning of vc.el. The current status is:
 
-;;; Implemented Functions
+;; FUNCTION NAME				STATUS
 ;; BACKEND PROPERTIES
-;; * revision-granularity
+;; * revision-granularity			OK
+;; - update-on-retrieve-tag			OK
 ;; STATE-QUERYING FUNCTIONS
-;; * registered (file)
-;; * state (file) - 'up-to-date 'edited 'needs-patch 'needs-merge
-;; * dir-status-files (dir files uf)
-;; * workfile-version (file)
-;; * checkout-model (file)
-;; - workfile-unchanged-p (file)
-;; - root (file)
+;; * registered (file)				OK
+;; * state (file)				OK
+;; - dir-status-files (dir files update-function) OK
+;; - dir-extra-headers (dir)			OK
+;; - dir-printer (fileinfo)			??
+;; - status-fileinfo-extra (file)		??
+;; * working-revision (file)			OK
+;; * checkout-model (files)			OK
+;; - mode-line-string (file)			??
 ;; STATE-CHANGING FUNCTIONS
-;; * register (file &optional rev comment)
-;; * checkin (file comment &optional rev)
-;; * find-version (file rev buffer)
-;; * checkout (file &optional editable rev)
-;; * revert (file &optional contents-done)
-;; * pull (prompt)
-;; - push (prompt)
-;; - responsible-p (file)
+;; * create-repo ()				OK
+;; * register (files &optional comment)		OK
+;; - responsible-p (file)			OK
+;; - receive-file (file rev)			??
+;; - unregister (file)				OK
+;; * checkin (files comment &optional rev)	OK
+;; * find-revision (file rev buffer)		OK
+;; * checkout (file &optional rev)		OK
+;; * revert (file &optional contents-done)	OK
+;; - merge-file (file &optional rev1 rev2)		??
+;; - merge-branch ()				??
+;; - merge-news (file)				??
+;; - pull (prompt)				OK
+;; ? push (prompt)				OK
+;; - steal-lock (file &optional revision)	??
+;; - modify-change-comment (files rev comment)	??
+;; - mark-resolved (files)			??
+;; - find-admin-dir (file)			??
 ;; HISTORY FUNCTIONS
-;; * print-log (file &optional buffer)
-;; * diff (file &optional rev1 rev2 buffer async)
+;; * print-log (files buffer &optional shortlog start-revision limit) OK
+;; * log-outgoing (buffer remote-location)	??
+;; * log-incoming (buffer remote-location)	??
+;; - log-search (buffer pattern)			??
+;; - log-view-mode ()				OK
+;; - show-log-entry (revision)			??
+;; - comment-history (file)			??
+;; - update-changelog (files)			??
+;; * diff (files &optional rev1 rev2 buffer async) OK
+;; - revision-completion-table (files)		??
+;; - annotate-command (file buf &optional rev)	OK
+;; - annotate-time ()				OK
+;; - annotate-current-time ()			??
+;; - annotate-extract-revision-at-line ()	OK
+;; - region-history (file buffer lfrom lto)	??
+;; - region-history-mode ()			??
+;; - mergebase (rev1 &optional rev2)		??
+;; TAG SYSTEM
+;; - create-tag (dir name branchp)		OK
+;; - retrieve-tag (dir name update)		OK
 ;; MISCELLANEOUS
-;; - delete-file (file)
-;; - rename-file (old new)
+;; - make-version-backups-p (file)		??
+;; - root (file)				OK
+;; - ignore (file &optional directory remove)	??
+;; - ignore-completion-table (directory)	??
+;; - previous-revision (file rev)		OK
+;; - next-revision (file rev)			OK
+;; - log-edit-mode ()				??
+;; - check-headers ()				??
+;; - delete-file (file)				OK
+;; - rename-file (old new)			OK
+;; - find-file-hook ()				??
+;; - extra-menu ()				??
+;; - extra-dir-menu ()				??
+;; - conflicted-files (dir)			??
 
 ;;; Code:
 
-(eval-when-compile (require 'vc))
+(eval-when-compile
+  (require 'vc))
 
 (autoload 'vc-switches "vc")
 
-;;; Customization
-
-(defgroup vc-fossil nil
-  "VC Fossil backend."
-  :group 'vc)
-
-(defcustom vc-fossil-diff-switches t ; Fossil doesn't support common args like -u
-  "String or list of strings specifying switches for Fossil diff under VC.
-If nil, use the value of `vc-diff-switches'.  If t, use no switches."
-  :type '(choice (const :tag "Unspecified" nil)
-                 (const :tag "None" t)
-                 (string :tag "Argument String")
-                 (repeat :tag "Argument List" :value ("") string))
-  :group 'vc-fossil)
-
-(defcustom vc-fossil-extra-header-fields (list :checkout :tags)
-  "A list of keywords denoting extra header fields to show in the vc-dir buffer."
-  :type '(set (const :repository) (const :remote-url) (const :synchro)
-              (const :checkout) (const :comment) (const :tags))
-  :group 'vc-fossil)
-
-
-;;; BACKEND PROPERTIES
-
-(defvar vc-fossil-history nil)
-
-(defvar vc-fossil-pull-history nil)
-(defvar vc-fossil-push-history nil)
+(declare-function log-edit-extract-headers "log-edit" (headers string))
 
-(defun vc-fossil-revision-granularity () 'repository)
+(autoload 'vc-setup-buffer "vc-dispatcher")
+(declare-function vc-compilation-mode "vc-dispatcher" (backend))
+(declare-function vc-exec-after "vc-dispatcher" (code))
+(declare-function vc-set-async-update "vc-dispatcher" (process-buffer))
 
+(declare-function vc-annotate-convert-time "vc-annotate" (time))
 
-;; Internal Commands
+;; Internal Functions
 
 (defun vc-fossil--call (buffer &rest args)
   (apply #'process-file "fossil" nil buffer nil args))
@@ -107,308 +119,314 @@ If nil, use the value of `vc-diff-switch
   (zerop (apply #'vc-fossil--call '(t nil) args)))
 
 (defun vc-fossil--run (&rest args)
-  "Run a fossil command and return its output as a string"
   (catch 'bail
     (with-output-to-string
       (with-current-buffer standard-output
-        (unless (apply #'vc-fossil--out-ok args)
-          (throw 'bail nil))))))
+	(unless (apply #'vc-fossil--out-ok args)
+	  (throw 'bail nil))))))
 
 (defun vc-fossil--command (buffer okstatus file-or-list &rest flags)
-  "A wrapper around `vc-do-command' for use in vc-fossil.el.
-  The difference to vc-do-command is that this function always invokes `fossil'."
   (apply #'vc-do-command (or buffer "*vc*") okstatus "fossil" file-or-list flags)
-  (when (eql major-mode 'vc-dir-mode)  ; update header info
+  (when (eql major-mode 'vc-dir-mode)	; Update header info.
     (revert-buffer (current-buffer))))
 
-(defun vc-fossil--get-id (dir)
-  (let* ((default-directory dir)
-         (info (vc-fossil--run "info"))
-         (pos (string-match "checkout: *\\([0-9a-fA-F]+\\)" info))
-         (uid (match-string 1 info))
-         )
-    (substring uid 0 10)))
-
-(defun vc-fossil--get-repository (dir)
-  (let* ((default-directory dir)
-         (info (vc-fossil--run "info")))
-    (string-match "repository: *\\(.*\\)$" info)
-    (match-string 1 info)))
+(defvar vc-fossil--history nil)
 
 (defun vc-fossil--do-async-prompted-command (command &optional prompt hist-var)
-  "Run a fossil command asynchronously.
-Allow user to edit command in minibuffer if PROMPT is non-nil."
   (let* ((root (vc-fossil-root default-directory))
-         (buffer (format "*vc-fossil : %s*" (expand-file-name root)))
-         (fossil-program "fossil")
-         (args '()))
+	 (buffer (format "*vc-fossil : %s*" (expand-file-name root)))
+	 (fossil-program "fossil")
+	 (args '()))
     (when prompt
       (setq args (split-string
-                  (read-shell-command "Run Fossil (like this): "
-                                      (concat fossil-program " " command)
-                                      (or hist-var 'vc-fossil-history))
-                  " " t))
+		  (read-shell-command "Run Fossil (like this): "
+				      (concat fossil-program " " command)
+				      (or hist-var 'vc-fossil--history))
+		  " " t))
       (setq fossil-program (car args)
-            command (cadr args)
-            args (cddr args)))
+	    command (cadr args)
+	    args (cddr args)))
     (apply 'vc-do-async-command buffer root fossil-program command args)
     (with-current-buffer buffer
       (vc-run-delayed (vc-compilation-mode 'Fossil)))
     (vc-set-async-update buffer)))
 
-;;; STATE-QUERYING FUNCTIONS
+(defun vc-fossil--get-id (dir)
+  (let* ((default-directory dir)
+	 (info (vc-fossil--run "info"))
+	 (pos (string-match "checkout: *\\([0-9a-fA-F]+\\)" info))
+	 (uid (match-string 1 info)))
+    (substring uid 0 10)))
+
+(defun vc-fossil--state-code (code)
+  (cond ((not code)                 'unregistered)
+	((string= code "UNKNOWN")   'unregistered)
+	((string= code "UNCHANGED") 'up-to-date)
+	((string= code "CONFLICT")  'conflict)
+	((string= code "ADDED")     'added)
+	((string= code "ADD")       'needs-update)
+	((string= code "EDITED")    'edited)
+	((string= code "REMOVE")    'removed)
+	((string= code "UPDATE")    'needs-update)
+	((string= code "UPDATED_BY_MERGE") 'needs-merge)
+	((string= code "EXTRA")     'unregistered)
+	((string= code "MISSING")   'missing)
+	((string= code "RENAMED")   'added)
+	(t             nil)))
+
+(defvar vc-fossil--file-classifications nil
+  "An alist of (filename . classification) pairs.")
+
+(defun vc-fossil--classify-all-files (dir)
+  (setq vc-fossil--file-classifications nil)
+  (let* ((default-directory dir)
+	 (lines (split-string (vc-fossil--run "changes" "--classify" "--all" ".") "[\n\r]+" t)))
+    (dolist (line lines)
+      (let* ((state-and-file (split-string-and-unquote line))
+	     (state (car state-and-file))
+	     (file (cadr state-and-file))
+	     (pair (cons file state)))
+	(push pair vc-fossil--file-classifications)))))
+
+(defun vc-fossil--propertize-header-line (name value)
+  (concat (propertize name  'face 'font-lock-type-face)
+	  (propertize value 'face 'font-lock-variable-name-face)))
+
+;; Customization
+
+(defgroup vc-fossil nil
+  "VC Fossil backend."
+  :group 'vc)
+
+(defcustom vc-fossil-diff-switches t
+  "String or list of strings specifying switches for Fossil diff under VC.
+If nil, use the value of `vc-diff-switches'.  If t, use no switches."
+  :type '(choice (const :tag "Unspecified" nil)
+		 (const :tag "None" t)
+		 (string :tag "Argument String")
+		 (repeat :tag "Argument List" :value ("") string))
+  :group 'vc-fossil)
+
+(defcustom vc-fossil-extra-header-fields (list :repository :remote-url :checkout :tags)
+  "A list of keywords denoting extra header fields to show in the vc-dir buffer."
+  :type '(set (const :repository) (const :remote-url) (const :synchro)
+	      (const :checkout) (const :comment) (const :tags))
+  :group 'vc-fossil)
+
+;; BACKEND PROPERTIES
+
+(defun vc-fossil-revision-granularity () 'repository)
+
+(defun vc-fossil-update-on-retrieve-tag () nil)
+
+;; STATE-QUERYING FUNCTIONS
 
 ;;;###autoload
 (defun vc-fossil-registered (file)
-  "Check whether FILE is registered with fossil."
   (with-temp-buffer
     (let* ((str (ignore-errors
-                  (vc-fossil--out-ok "finfo" "-s" (file-truename file))
-                  (buffer-string))))
+		  (vc-fossil--out-ok "finfo" "-s" (file-truename file))
+		  (buffer-string))))
       (and str
-           (> (length str) 7)
-           (not (string= (substring str 0 7) "unknown"))))))
+	   (> (length str) 7)
+	   (not (string= (substring str 0 7) "unknown"))))))
 
-(defun vc-fossil-state-code (code)
-  (cond ((not code)                 'unregistered)
-        ((string= code "UNKNOWN")   'unregistered)
-        ((string= code "UNCHANGED") 'up-to-date)
-        ((string= code "CONFLICT")  'edited)
-        ((string= code "ADDED")     'added)
-        ((string= code "ADD")       'needs-update)
-        ((string= code "EDITED")    'edited)
-        ((string= code "REMOVE")    'removed)
-        ((string= code "UPDATE")    'needs-update)
-        ((string= code "MERGE")     'needs-merge)
-        ((string= code "EXTRA")     'unregistered)
-        ((string= code "MISSING")   'missing)
-        ((string= code "RENAMED")   'added)
-        (t           nil)))
-
-(defun vc-fossil-state  (file)
-  "Fossil specific version of `vc-state'."
-  (let* ((line (vc-fossil--run "update" "-n" "-v" "current" (file-truename file)))
-         (state (vc-fossil-state-code (car (split-string line)))))
-    ;; if 'fossil update' says file is UNCHANGED check to see if it has been RENAMED
+(defun vc-fossil-state (file)
+  (let* ((line (vc-fossil--run "changes" "--classify" "--all" (file-truename file)))
+	 (state (vc-fossil--state-code (car (split-string line)))))
+    ;; ---!!! Does 'fossil update' and 'fossil changes' have different
+    ;; ---!!!    semantics here?
+    ;;;
+    ;; If 'fossil update' says file is UNCHANGED check to see if it
+    ;; has been RENAMED.
     (when (or (not state) (eql state 'up-to-date))
       (let ((line (vc-fossil--run "changes" "--classify" "--unchanged" "--renamed"
-                                  (file-truename file))))
-        (setq state (and line (vc-fossil-state-code (car (split-string line)))))))
+				  (file-truename file))))
+	(setq state (and line (vc-fossil--state-code (car (split-string line)))))))
     state))
 
-(defun vc-fossil-working-revision (file)
-  "Fossil Specific version of `vc-working-revision'."
-  (let ((line (vc-fossil--run "finfo" "-s" (file-truename file))))
-    (and line
-         (cadr (split-string line)))))
-
-(defun vc-fossil-workfile-unchanged-p (file)
-  (eq 'up-to-date (vc-fossil-state file)))
-
-(defun vc-fossil-root (file)
-  (or (vc-find-root file ".fslckout")
-      (vc-find-root file "_FOSSIL_")))
-
-;; TODO: mode-line-string
-;; TODO: dir-printer
-
-(defun vc-fossil-dir-status (dir update-function)
-  "Get fossil status for all files in a directory"
-  (vc-fossil--dir-status-files dir nil update-function))
-
-(defvar vc-fossil--file-classifications nil
-  "An alist of (filename . classification) pairs.")
-
-(defun vc-fossil--classify-all-files (dir)
-  (setq vc-fossil--file-classifications nil)
-  (let* ((default-directory dir)
-         (lines (split-string (vc-fossil--run "changes" "--classify" "--all") "[\n\r]+" t)))
-    (dolist (line lines)
-      (string-match "^\\(\\w+\\)\\s-+\\(.+\\)$" line)
-      (let ((pair (cons (match-string 2 line) (match-string 1 line))))
-        (push pair vc-fossil--file-classifications)))))
-
-(defun vc-fossil--dir-status-files (dir files update-function)
-  "Get fossil status for all specified files in a directory.
-If `files` is nil return the status for all files."
+(defun vc-fossil-dir-status-files (dir files update-function)
   (vc-fossil--classify-all-files dir)
-  (insert (apply 'vc-fossil--run "update" "-n" "-v" "current"
-                 (or files (list dir))))
+  (insert (apply 'vc-fossil--run "changes" "--classify" "--all"
+		 (or files (list dir))))
   (let ((result '())
-        (root (vc-fossil-root dir)))
+	(root (vc-fossil-root dir)))
     (goto-char (point-min))
     (while (not (eobp))
       (let* ((line (buffer-substring-no-properties (point) (line-end-position)))
-             (status-word (car (split-string line))))
-        (if (string-match "-----" status-word)
-            (goto-char (point-max))
-          (let ((file (substring line (+ (length status-word) 1)))
-                (state (vc-fossil-state-code status-word)))
-            (setq file (expand-file-name file root))
-            (setq file (file-relative-name file dir))
-            ;; if 'fossil update' says file is UNCHANGED check to see if it has been RENAMED
-            (when (or (not state) (eql state 'up-to-date))
-              (setq state (vc-fossil-state-code (cdr (assoc file vc-fossil--file-classifications)))))
-            (push (list file state) result)))
-        (forward-line)))
-    ;; now collect untracked files
+	     (status-word (car (split-string line))))
+	(if (string-match "-----" status-word)
+	    (goto-char (point-max))
+	  (let ((file (cadr (split-string line)))
+		(state (vc-fossil--state-code status-word)))
+	    ;; If 'fossil update' says file is UNCHANGED check to see
+	    ;; if it has been RENAMED.
+	    (when (or (not state) (eql state 'up-to-date))
+	      (setq state (vc-fossil--state-code (cdr (assoc file vc-fossil--file-classifications)))))
+	    (when (not (eq state 'up-to-date))
+	      (push (list file state) result))))
+	(forward-line)))
+    ;; Now collect untracked files.
     (delete-region (point-min) (point-max))
-    (insert (apply 'vc-fossil--run "extras" "--dotfiles" (or files (list dir))))
+    (insert (apply 'vc-fossil--run "extras" "--dotfiles" (list dir)))
     (goto-char (point-min))
     (while (not (eobp))
       (let ((file (buffer-substring-no-properties (point) (line-end-position))))
-        (setq file (expand-file-name file dir))
-        (setq file (file-relative-name file dir))
-        (push (list file (vc-fossil-state-code nil)) result)
-        (forward-line)))
+	(push (list file (vc-fossil--state-code nil)) result)
+	(forward-line)))
     (funcall update-function result nil)))
 
-(if (>= emacs-major-version 25)
-    (defun vc-fossil-dir-status-files (dir files update-function)
-      (vc-fossil--dir-status-files dir files update-function))
-  (defun vc-fossil-dir-status-files (dir files default-state update-function)
-    (vc-fossil--dir-status-files dir files update-function)))
-
-(defun vc-fossil-checkout-model (files) 'implicit)
-
-(defun vc-fossil--propertize-header-line (name value)
-  (concat (propertize name  'face 'font-lock-type-face)
-          (propertize value 'face 'font-lock-variable-name-face)))
-
 (defun vc-fossil-dir-extra-headers (dir)
   (let ((info (vc-fossil--run "info"))
-        (settings (vc-fossil--run "settings"))
-        (lines nil))
+	(settings (vc-fossil--run "settings"))
+	(lines nil))
     (dolist (field vc-fossil-extra-header-fields)
       (unless (null lines)
-        (push "\n" lines))
+	(push "\n" lines))
       (cond ((eql field :repository)
-             (string-match "repository: *\\(.*\\)$" info)
-             (let ((repo (match-string 1 info)))
-               (push (vc-fossil--propertize-header-line "Repository : " repo) lines)))
-            ((eql field :remote-url)
-             (let ((remote-url (car (split-string (vc-fossil--run "remote-url")))))
-               (push (vc-fossil--propertize-header-line "Remote URL : " remote-url) lines)))
-            ((eql field :synchro)
-             (let* ((as-match (string-match "^autosync +.+ +\\([[:graph:]]+\\)$" settings))
-                    (autosync (and as-match (match-string 1 settings)))
-                    (dp-match (string-match "^dont-push +.+ +\\([[:graph:]]+\\)$" settings))
-                    (dontpush (and dp-match (match-string 1 settings))))
-               (push (vc-fossil--propertize-header-line "Synchro    : "
-                                                        (concat (and autosync "autosync=") autosync
-                                                                (and dontpush " dont-push=") dontpush))
-                     lines)))
-            ((eql field :checkout)
-             (let* ((posco (string-match "checkout: *\\([0-9a-fA-F]+\\) \\([-0-9: ]+ UTC\\)" info))
-                    (coid (substring (match-string 1 info) 0 10))
-                    (cots (format-time-string "%Y-%m-%d %H:%M:%S %Z"
-                                              (safe-date-to-time (match-string 2 info))))
-                    (child-match (string-match "child: *\\(.*\\)$" info))
-                    (leaf (if child-match "non-leaf" "leaf")))
-               (push (vc-fossil--propertize-header-line "Checkout   : "
-                                                        (concat coid " " cots
-                                                                (concat " (" leaf ")")))
-                     lines)))
-            ((eql field :comment)
-             (string-match "comment: *\\(.*\\)$" info)
-             (let ((msg (match-string 1 info)))
-               (push (vc-fossil--propertize-header-line "Comment    : " msg) lines)))
-            ((eql field :tags)
-             (string-match "tags: *\\(.*\\)" info)
-             (let ((tags (match-string 1 info)))
-               (push (vc-fossil--propertize-header-line "Tags       : " tags) lines)))))
+	     (string-match "repository: *\\(.*\\)$" info)
+	     (let ((repo (match-string 1 info)))
+	       (push (vc-fossil--propertize-header-line "Repository : " repo) lines)))
+	    ((eql field :remote-url)
+	     (let ((remote-url (car (split-string (vc-fossil--run "remote-url")))))
+	       (unless (string= "off" remote-url)
+		 (push (vc-fossil--propertize-header-line "Remote     : " remote-url) lines))))
+	    ((eql field :synchro)
+	     (let* ((as-match (string-match "^autosync +.+ +\\([[:graph:]]+\\)$" settings))
+		    (autosync (and as-match (match-string 1 settings)))
+		    (dp-match (string-match "^dont-push +.+ +\\([[:graph:]]+\\)$" settings))
+		    (dontpush (and dp-match (match-string 1 settings))))
+	       (push (vc-fossil--propertize-header-line "Synchro    : "
+							(concat (and autosync "autosync=") autosync
+								(and dontpush " dont-push=") dontpush))
+		     lines)))
+	    ((eql field :checkout)
+	     (let* ((posco (string-match "checkout: *\\([0-9a-fA-F]+\\) \\([-0-9: ]+ UTC\\)" info))
+		    (coid (substring (match-string 1 info) 0 10))
+		    (cots (format-time-string "%Y-%m-%d %H:%M:%S %Z"
+					      (safe-date-to-time (match-string 2 info))))
+		    (child-match (string-match "child: *\\(.*\\)$" info))
+		    (leaf (if child-match "non-leaf" "leaf")))
+	       (push (vc-fossil--propertize-header-line "Checkout   : "
+							(concat coid " " cots
+								(concat " (" leaf ")")))
+		     lines)))
+	    ((eql field :comment)
+	     (string-match "comment: *\\(.*\\)$" info)
+	     (let ((msg (match-string 1 info)))
+	       (push (vc-fossil--propertize-header-line "Comment    : " msg) lines)))
+	    ((eql field :tags)
+	     (string-match "tags: *\\(.*\\)" info)
+	     (let ((tags (match-string 1 info)))
+	       (push (vc-fossil--propertize-header-line "Tags       : " tags) lines)))))
     (apply #'concat (nreverse lines))))
 
-;;; STATE-CHANGING FUNCTIONS
+;; - dir-printer (fileinfo)
+
+;; - status-fileinfo-extra (file)
+
+(defun vc-fossil-working-revision (file)
+  (let ((line (vc-fossil--run "finfo" "-s" (file-truename file))))
+    (and line
+	 (cadr (split-string line)))))
+
+(defun vc-fossil-checkout-model (files) 'implicit)
+
+;; - mode-line-string (file)
+
+;; STATE-CHANGING FUNCTIONS
 
 (defun vc-fossil-create-repo ()
-  "Create a new Fossil Repository."
   (vc-fossil--command nil 0 nil "new"))
 
-;; We ignore the comment.  There's no comment on add.
 (defun vc-fossil-register (files &optional rev comment)
-  "Register FILE into the fossil version-control system."
+  ;; We ignore the comment.  There's no comment on add.
   (vc-fossil--command nil 0 files "add"))
 
 (defun vc-fossil-responsible-p (file)
   (vc-fossil-root file))
 
+;; - receive-file (file rev)
+
 (defun vc-fossil-unregister (file)
   (vc-fossil--command nil 0 file "rm"))
 
-(declare-function log-edit-extract-headers "log-edit" (headers string))
-
-(defun vc-fossil--checkin (files comment &optional rev)
+(defun vc-fossil-checkin (files comment &optional rev)
   (apply 'vc-fossil--command nil 0 files
-         (nconc (list "commit" "-m")
-                (log-edit-extract-headers
-                 `(("Author" . "--user-override")
-                   ("Date" . "--date-override"))
-                 comment)
-                (vc-switches 'Fossil 'checkin))))
-
-(if (>= emacs-major-version 25)
-    (defun vc-fossil-checkin (files comment &optional rev)
-      (vc-fossil--checkin files comment rev))
-  (defun vc-fossil-checkin (files rev comment)
-    (vc-fossil--checkin files comment rev)))
+	 (nconc (list "commit" "-m")
+		(log-edit-extract-headers
+		 `(("Author" . "--user-override")
+		   ("Date" . "--date-override"))
+		 comment)
+		(vc-switches 'Fossil 'checkin))))
 
 (defun vc-fossil-find-revision (file rev buffer)
   (apply #'vc-fossil--command buffer 0 file
-         "cat"
-         (nconc
-          (unless (zerop (length rev)) (list "-r" rev))
-          (vc-switches 'Fossil 'checkout))))
+	 "cat"
+	 (nconc
+	  (unless (zerop (length rev)) (list "-r" rev))
+	  (vc-switches 'Fossil 'checkout))))
 
 (defun vc-fossil-checkout (file &optional editable rev)
   (apply #'vc-fossil--command nil 0 file
-         "update"
-         (nconc
-          (cond
-           ((eq rev t) (list "current"))
-           ((equal rev "") (list "trunk"))
-           ((stringp rev) (list rev)))
-          (vc-switches 'Fossil 'checkout))))
+	 "update"
+	 (nconc
+	  (cond
+	   ((eq rev t) (list "current"))
+	   ((equal rev "") (list "trunk"))
+	   ((stringp rev) (list rev)))
+	  (vc-switches 'Fossil 'checkout))))
 
 (defun vc-fossil-revert (file &optional contents-done)
-  "Revert FILE to the version stored in the fossil repository."
-  (if contents-done t
+  (if contents-done
+      t
     (vc-fossil--command nil 0 file "revert")))
 
-(defun vc-fossil-pull (prompt)
-  "Pull upstream changes into the current branch.
+;; - merge-file (file &optional rev1 rev2)
+
+;; - merge-branch ()
 
-With a prefix argument, or if PROMPT is non-nil, prompt for a specific
-Fossil pull command.  The default is \"fossil update\"."
+;; - merge-news (file)
+
+(defvar vc-fossil--pull-history nil)
+(defvar vc-fossil--push-history nil)
+
+(defun vc-fossil-pull (prompt)
   (interactive "P")
-  (vc-fossil--do-async-prompted-command "update" prompt 'vc-fossil-pull-history))
+  (vc-fossil--do-async-prompted-command "update" prompt 'vc-fossil--pull-history))
 
 (defun vc-fossil-push (prompt)
-  "Push changes to upstream repository.
-
-With a prefix argument or if PROMPT is non-nil, prompt for a specific
-Fossil push command.  The default is \"fossil push\"."
   (interactive "P")
   (vc-fossil--do-async-prompted-command "push" prompt 'vc-fossil-push-history))
 
-;; HISTORY FUNCTIONS
+;; - steal-lock (file &optional revision)
 
-;; FIXME, we actually already have short, start and limit, need to
-;; add it into the code
+;; - modify-change-comment (files rev comment)
 
-(autoload 'vc-setup-buffer "vc-dispatcher")
+;; - mark-resolved (files)
+
+;; - find-admin-dir (file)
+
+;; HISTORY FUNCTIONS
 
 (defun vc-fossil-print-log (files buffer &optional shortlog start-revision limit)
-  "Print full log for a file"
+  ;; TODO: We actually already have short, start and limit, need to
+  ;; add it into the code.
   (vc-setup-buffer buffer)
   (let ((inhibit-read-only t))
     (with-current-buffer buffer
       (dolist (file files)
-        (apply #'vc-fossil--command buffer 0 nil "timeline"
-               (nconc
-                (when start-revision (list "before" start-revision))
-                (when limit (list "-n" (number-to-string limit)))
-                (list "-p" (file-relative-name (expand-file-name file)))))))))
+	(apply #'vc-fossil--command buffer 0 nil "timeline"
+	       (nconc
+		(when start-revision (list "before" start-revision))
+		(when limit (list "-n" (number-to-string limit)))
+		(list "-p" (file-relative-name (expand-file-name file)))))))))
+
+;; * log-outgoing (buffer remote-location)
+
+;; * log-incoming (buffer remote-location)
+
+;; - log-search (buffer pattern)
 
 (defvar log-view-message-re)
 (defvar log-view-file-re)
@@ -416,7 +434,6 @@ Fossil push command.  The default is \"f
 (defvar log-view-per-file-logs)
 
 (define-derived-mode vc-fossil-log-view-mode log-view-mode "Fossil-Log-View"
-  (require 'add-log) ;; we need the add-log faces
   (setq word-wrap t)
   (set (make-local-variable 'wrap-prefix) "                      ")
   (set (make-local-variable 'log-view-file-re) "\\`a\\`")
@@ -425,53 +442,57 @@ Fossil push command.  The default is \"f
        "^[0-9:]+ \\[\\([0-9a-fA-F]*\\)\\] \\(?:\\*[^*]*\\*\\)? ?\\(.*\\)")
   (set (make-local-variable 'log-view-font-lock-keywords)
        (append
-        '(
-          ("^\\([0-9:]*\\) \\(\\[[[:alnum:]]*\\]\\) \\(\\(?:\\*[[:word:]]*\\*\\)?\\) ?\\(.*?\\) (user: \\([[:word:]]*\\) tags: \\(.*\\))"
-           (1 'change-log-date)
-           (2 'change-log-name)
-           (3 'highlight)
-           (4 'log-view-message)
-           (5 'change-log-name)
-           (6 'highlight))
-          ("^=== \\(.*\\) ==="
-           (1 'change-log-date))))))
+	'(
+	  ("^\\([0-9:]*\\) \\(\\[[[:alnum:]]*\\]\\) \\(\\(?:\\*[[:word:]]*\\*\\)?\\) ?\\(.*?\\) (user: \\([[:word:]]*\\) tags: \\(.*\\))"
+	   (1 'change-log-date)
+	   (2 'change-log-name)
+	   (3 'highlight)
+	   (4 'log-view-message)
+	   (5 'change-log-name)
+	   (6 'highlight))
+	  ("^=== \\(.*\\) ==="
+	   (1 'change-log-date))))))
+
+;; - show-log-entry (revision)
+
+;; - comment-history (file)
+
+;; - update-changelog (files)
 
-;; TODO: implement diff for directories
 (defun vc-fossil-diff (files &optional rev1 rev2 buffer async)
-  "Get Differences for a file"
+  ;; TODO: Implement diff for directories.
   (let ((buf (or buffer "*vc-diff*"))
-        (root (and files (expand-file-name (vc-fossil-root (car files))))))
-    ;; if we diff the root directory, do not specify a file
+	(root (and files (expand-file-name (vc-fossil-root (car files))))))
+    ;; If we diff the root directory, do not specify a file.
     (if (or (null files)
-            (and (null (cdr files))
-                 (equal root (expand-file-name (car files)))))
-        (setq files nil))
+	    (and (null (cdr files))
+		 (equal root (expand-file-name (car files)))))
+	(setq files nil))
     (apply #'vc-fossil--command
-           buf 0 files "diff" "-i"
-           (nconc
-            (cond
-             (rev2 (list "--from" (or rev1 "current") "--to" rev2))
-             (rev1 (list "--from" rev1)))
-            (vc-switches 'Fossil 'diff)))))
+	   buf 0 files "diff" "-i"
+	   (nconc
+	    (cond
+	     (rev2 (list "--from" (or rev1 "current") "--to" rev2))
+	     (rev1 (list "--from" rev1)))
+	    (vc-switches 'Fossil 'diff)))))
 
-(declare-function vc-annotate-convert-time "vc-annotate" (time))
-
-(defun vc-fossil-annotate-command (file buffer &optional rev)
-  "Execute \"fossil annotate\" on FILE, inserting the contents in BUFFER.
-If REV is specified, annotate that revision."
-  ;;(assert (not rev) nil "Annotating a revision not supported")
-  (vc-fossil--command buffer 0 file "annotate"))
+;; - revision-completion-table (files)
 
 (defconst vc-fossil-annotate-re
   "\\([[:word:]]+\\)\\s-+\\([-0-9]+\\)\\s-+[0-9]+: ")
 
-;; TODO: currently only the date is used, not the time
+(defun vc-fossil-annotate-command (file buffer &optional rev)
+  (vc-fossil--command buffer 0 file "annotate"))
+
 (defun vc-fossil-annotate-time ()
+  ;; TODO: Currently only the date is used, not the time.
   (when (looking-at vc-fossil-annotate-re)
     (goto-char (match-end 0))
     (vc-annotate-convert-time
      (date-to-time (format "%s 00:00:00" (match-string-no-properties 2))))))
 
+;; - annotate-current-time ()
+
 (defun vc-fossil-annotate-extract-revision-at-line ()
   (save-excursion
     (beginning-of-line)
@@ -479,60 +500,73 @@ If REV is specified, annotate that revis
       (goto-char (match-end 0))
       (match-string-no-properties 1))))
 
-;;; TAG SYSTEM
+;; - region-history (file buffer lfrom lto)
+
+;; - region-history-mode ()
+
+;; - mergebase (rev1 &optional rev2)
 
-;; FIXME: we need a convenience function to check that there's nothing checked
-;; out in the tree, since we tag or branch the whole repository
+;; TAG SYSTEM
 
 (defun vc-fossil-create-tag (file name branchp)
   (let* ((dir (if (file-directory-p file) file (file-name-directory file)))
-         (default-directory dir))
+	 (default-directory dir))
     (apply #'vc-fossil--command nil 0 nil `(,@(if branchp
-                                                 '("branch" "new")
-                                               '("tag" "add"))
-                                           ,name ,(vc-fossil--get-id dir)))))
-
-;; FIXME: we should update buffers if update is non-nill
+						  '("branch" "new")
+						'("tag" "add"))
+					    ,name ,(vc-fossil--get-id dir)))))
 
 (defun vc-fossil-retrieve-tag (dir name update)
   (let ((default-directory dir))
     (vc-fossil--command nil 0 nil "checkout" name)))
 
-;;; MISCELLANEOUS
+;; MISCELLANEOUS
+
+;; - make-version-backups-p (file)
+
+(defun vc-fossil-root (file)
+  (or (vc-find-root file ".fslckout")
+      (vc-find-root file "_FOSSIL_")))
+
+;; - ignore (file &optional directory)
+
+;; - ignore-completion-table
 
 (defun vc-fossil-previous-revision (file rev)
-  "Fossil specific version of the `vc-previous-revision'."
   (with-temp-buffer
     (cond
      (file
       (vc-fossil--command t 0 (file-truename file) "finfo" "-l" "-b")
       (goto-char (point-min))
       (and (re-search-forward (concat "^" (regexp-quote rev)) nil t)
-           (zerop (forward-line))
-           (looking-at "^\\([0-9a-zA-Z]+\\)")
-           (match-string 1)))
+	   (zerop (forward-line))
+	   (looking-at "^\\([0-9a-zA-Z]+\\)")
+	   (match-string 1)))
      (t
       (vc-fossil--command t 0 nil "info" rev)
       (goto-char (point-min))
       (and (re-search-forward "parent: *\\([0-9a-fA-F]+\\)" nil t)
-           (match-string 1))))))
+	   (match-string 1))))))
 
 (defun vc-fossil-next-revision (file rev)
-  "Fossil specific version of the `vc-previous-revision'."
   (with-temp-buffer
     (cond
      (file
       (vc-fossil--command t 0 (file-truename file) "finfo" "-l" "-b")
       (goto-char (point-min))
       (and (re-search-forward (concat "^" (regexp-quote rev)) nil t)
-           (zerop (forward-line -1))
-           (looking-at "^\\([0-9a-zA-Z]+\\)")
-           (match-string 1)))
+	   (zerop (forward-line -1))
+	   (looking-at "^\\([0-9a-zA-Z]+\\)")
+	   (match-string 1)))
      (t
       (vc-fossil--command t 0 nil "info" rev)
       (goto-char (point-min))
       (and (re-search-forward "child: *\\([0-9a-fA-F]+\\)" nil t)
-           (match-string 1))))))
+	   (match-string 1))))))
+
+;; - log-edit-mode ()
+
+;; - check-headers ()
 
 (defun vc-fossil-delete-file (file)
   (vc-fossil--command nil 0 (file-truename file) "rm" "--hard"))
@@ -540,6 +574,14 @@ If REV is specified, annotate that revis
 (defun vc-fossil-rename-file (old new)
   (vc-fossil--command nil 0 (list (file-truename old) (file-truename new)) "mv" "--hard"))
 
+;; - find-file-hook ()
+
+;; - extra-menu ()
+
+;; - extra-dir-menu ()
+
+;; - conflicted-files (dir)
+
 ;;; This snippet enables the Fossil VC backend so it will work once
 ;;; this file is loaded.  By also marking it for inclusion in the
 ;;; autoloads file, installing packaged versions of this should work