--- a/contrib/mercurial.el Tue Aug 23 12:46:43 2005 -0700
+++ b/contrib/mercurial.el Tue Aug 23 14:20:17 2005 -0700
@@ -4,8 +4,6 @@
;; Author: Bryan O'Sullivan <bos@serpentine.com>
-;; $Id$
-
;; mercurial.el is free software; you can redistribute it and/or
;; modify it under the terms of version 2 of the GNU General Public
;; License as published by the Free Software Foundation.
@@ -22,7 +20,7 @@
;;; Commentary:
-;; This mode builds upon Emacs's VC mode to provide flexible
+;; mercurial.el builds upon Emacs's VC mode to provide flexible
;; integration with the Mercurial distributed SCM tool.
;; To get going as quickly as possible, load mercurial.el into Emacs and
@@ -34,9 +32,9 @@
;; job for the commercial Perforce SCM product. In fact, substantial
;; chunks of code are adapted from p4.el.
-;; This code has been developed under XEmacs 21.5, and may will not
-;; work as well under GNU Emacs (albeit tested under 21.2). Patches
-;; to enhance the portability of this code, fix bugs, and add features
+;; This code has been developed under XEmacs 21.5, and may not work as
+;; well under GNU Emacs (albeit tested under 21.4). Patches to
+;; enhance the portability of this code, fix bugs, and add features
;; are most welcome. You can clone a Mercurial repository for this
;; package from http://www.serpentine.com/hg/hg-emacs
@@ -83,11 +81,32 @@
:type 'sexp
:group 'mercurial)
+(defcustom hg-commit-mode-hook nil
+ "Hook run when a buffer is created to prepare a commit."
+ :type 'sexp
+ :group 'mercurial)
+
+(defcustom hg-pre-commit-hook nil
+ "Hook run before a commit is performed.
+If you want to prevent the commit from proceeding, raise an error."
+ :type 'sexp
+ :group 'mercurial)
+
(defcustom hg-global-prefix "\C-ch"
"The global prefix for Mercurial keymap bindings."
:type 'sexp
:group 'mercurial)
+(defcustom hg-commit-allow-empty-message nil
+ "Whether to allow changes to be committed with empty descriptions."
+ :type 'boolean
+ :group 'mercurial)
+
+(defcustom hg-commit-allow-empty-file-list nil
+ "Whether to allow changes to be committed without any modified files."
+ :type 'boolean
+ :group 'mercurial)
+
(defcustom hg-rev-completion-limit 100
"The maximum number of revisions that hg-read-rev will offer to complete.
This affects memory usage and performance when prompting for revisions
@@ -100,6 +119,12 @@
:type 'integer
:group 'mercurial)
+(defcustom hg-update-modeline t
+ "Whether to update the modeline with the status of a file after every save.
+Set this to nil on platforms with poor process management, such as Windows."
+ :type 'boolean
+ :group 'mercurial)
+
;;; Other variables.
@@ -115,6 +140,14 @@
(make-variable-buffer-local 'hg-status)
(put 'hg-status 'permanent-local t)
+(defvar hg-prev-buffer nil)
+(make-variable-buffer-local 'hg-prev-buffer)
+(put 'hg-prev-buffer 'permanent-local t)
+
+(defvar hg-root nil)
+(make-variable-buffer-local 'hg-root)
+(put 'hg-root 'permanent-local t)
+
(defvar hg-output-buffer-name "*Hg*"
"The name to use for Mercurial output buffers.")
@@ -122,8 +155,20 @@
(defvar hg-rev-history nil)
+;;; Random constants.
+
+(defconst hg-commit-message-start
+ "--- Enter your commit message. Type `C-c C-c' to commit. ---\n")
+
+(defconst hg-commit-message-end
+ "--- Files in bold will be committed. Click to toggle selection. ---\n")
+
+
;;; hg-mode keymap.
+(defvar hg-mode-map (make-sparse-keymap))
+(define-key hg-mode-map "\C-xv" 'hg-prefix-map)
+
(defvar hg-prefix-map
(let ((map (copy-keymap vc-prefix-map)))
(if (functionp 'set-keymap-name)
@@ -135,14 +180,11 @@
(define-key hg-prefix-map "c" 'hg-undo)
(define-key hg-prefix-map "g" 'hg-annotate)
(define-key hg-prefix-map "l" 'hg-log)
-(define-key hg-prefix-map "n" 'hg-commit-file)
+(define-key hg-prefix-map "n" 'hg-commit-start)
;; (define-key hg-prefix-map "r" 'hg-update)
-(define-key hg-prefix-map "u" 'hg-revert-file)
+(define-key hg-prefix-map "u" 'hg-revert-buffer)
(define-key hg-prefix-map "~" 'hg-version-other-window)
-(defvar hg-mode-map (make-sparse-keymap))
-(define-key hg-mode-map "\C-xv" 'hg-prefix-map)
-
(add-minor-mode 'hg-mode 'hg-mode hg-mode-map)
@@ -156,17 +198,17 @@
(define-key hg-global-map "," 'hg-incoming)
(define-key hg-global-map "." 'hg-outgoing)
(define-key hg-global-map "<" 'hg-pull)
-(define-key hg-global-map "=" 'hg-diff)
+(define-key hg-global-map "=" 'hg-diff-repo)
(define-key hg-global-map ">" 'hg-push)
(define-key hg-global-map "?" 'hg-help-overview)
(define-key hg-global-map "A" 'hg-addremove)
(define-key hg-global-map "U" 'hg-revert)
(define-key hg-global-map "a" 'hg-add)
-(define-key hg-global-map "c" 'hg-commit)
+(define-key hg-global-map "c" 'hg-commit-start)
(define-key hg-global-map "f" 'hg-forget)
(define-key hg-global-map "h" 'hg-help-overview)
(define-key hg-global-map "i" 'hg-init)
-(define-key hg-global-map "l" 'hg-log)
+(define-key hg-global-map "l" 'hg-log-repo)
(define-key hg-global-map "r" 'hg-root)
(define-key hg-global-map "s" 'hg-status)
(define-key hg-global-map "u" 'hg-update)
@@ -187,14 +229,28 @@
'hg-buffer-mouse-clicked)
+;;; Commit mode keymaps.
+
+(defvar hg-commit-mode-map (make-sparse-keymap))
+(define-key hg-commit-mode-map "\C-c\C-c" 'hg-commit-finish)
+(define-key hg-commit-mode-map "\C-c\C-k" 'hg-commit-kill)
+
+(defvar hg-commit-mode-file-map (make-sparse-keymap))
+(define-key hg-commit-mode-file-map
+ (if hg-running-xemacs [button2] [mouse-2])
+ 'hg-commit-mouse-clicked)
+(define-key hg-commit-mode-file-map " " 'hg-commit-toggle-file)
+(define-key hg-commit-mode-file-map "\r" 'hg-commit-toggle-file)
+
+
;;; Convenience functions.
-(defun hg-binary ()
+(defsubst hg-binary ()
(if hg-binary
hg-binary
(error "No `hg' executable found!")))
-(defun hg-replace-in-string (str regexp newtext &optional literal)
+(defsubst hg-replace-in-string (str regexp newtext &optional literal)
"Replace all matches in STR for REGEXP with NEWTEXT string.
Return the new string. Optional LITERAL non-nil means do a literal
replacement.
@@ -205,7 +261,12 @@
(replace-in-string str regexp newtext literal)
(replace-regexp-in-string regexp newtext str nil literal)))
-(defun hg-chomp (str)
+(defsubst hg-strip (str)
+ "Strip leading and trailing white space from a string."
+ (hg-replace-in-string (hg-replace-in-string str "[ \t\r\n]+$" "")
+ "^[ \t\r\n]+" ""))
+
+(defsubst hg-chomp (str)
"Strip trailing newlines from a string."
(hg-replace-in-string str "[\r\n]+$" ""))
@@ -251,63 +312,91 @@
(hg-diff hg-view-file-name rev rev prev-buf))
((message "I don't know how to do that yet")))))
+(defsubst hg-event-point (event)
+ "Return the character position of the mouse event EVENT."
+ (if hg-running-xemacs
+ (event-point event)
+ (posn-point (event-start event))))
+
+(defsubst hg-event-window (event)
+ "Return the window over which mouse event EVENT occurred."
+ (if hg-running-xemacs
+ (event-window event)
+ (posn-window (event-start event))))
+
(defun hg-buffer-mouse-clicked (event)
"Translate the mouse clicks in a HG log buffer to character events.
These are then handed off to `hg-buffer-commands'.
Handle frickin' frackin' gratuitous event-related incompatibilities."
(interactive "e")
- (if hg-running-xemacs
- (progn
- (select-window (event-window event))
- (hg-buffer-commands (event-point event)))
- (select-window (posn-window (event-end event)))
- (hg-buffer-commands (posn-point (event-start event)))))
+ (select-window (hg-event-window event))
+ (hg-buffer-commands (hg-event-point event)))
(unless (fboundp 'view-minor-mode)
(defun view-minor-mode (prev-buffer exit-func)
(view-mode)))
-(defun hg-abbrev-file-name (file)
+(defsubst hg-abbrev-file-name (file)
+ "Portable wrapper around abbreviate-file-name."
(if hg-running-xemacs
(abbreviate-file-name file t)
(abbreviate-file-name file)))
(defun hg-read-file-name (&optional prompt default)
"Read a file or directory name, or a pattern, to use with a command."
- (let ((path (or default (buffer-file-name))))
- (if (or (not path) current-prefix-arg)
- (expand-file-name
- (read-file-name (format "File, directory or pattern%s: "
- (or prompt ""))
- (and path (file-name-directory path))
- nil nil
- (and path (file-name-nondirectory path))
- 'hg-file-history))
- path)))
+ (save-excursion
+ (while hg-prev-buffer
+ (set-buffer hg-prev-buffer))
+ (let ((path (or default (buffer-file-name))))
+ (if (or (not path) current-prefix-arg)
+ (expand-file-name
+ (read-file-name (format "File, directory or pattern%s: "
+ (or prompt ""))
+ (and path (file-name-directory path))
+ nil nil
+ (and path (file-name-nondirectory path))
+ 'hg-file-history))
+ path))))
(defun hg-read-rev (&optional prompt default)
"Read a revision or tag, offering completions."
- (let ((rev (or default "tip")))
- (if (or (not rev) current-prefix-arg)
- (let ((revs (split-string (hg-chomp
- (hg-run0 "-q" "log" "-r"
- (format "-%d"
- hg-rev-completion-limit)
- "-r" "tip"))
- "[\n:]")))
- (dolist (line (split-string (hg-chomp (hg-run0 "tags")) "\n"))
- (setq revs (cons (car (split-string line "\\s-")) revs)))
- (completing-read (format "Revision%s (%s): "
- (or prompt "")
- (or default "tip"))
- (map 'list 'cons revs revs)
- nil
- nil
- nil
- 'hg-rev-history
- (or default "tip")))
- rev)))
+ (save-excursion
+ (while hg-prev-buffer
+ (set-buffer hg-prev-buffer))
+ (let ((rev (or default "tip")))
+ (if (or (not rev) current-prefix-arg)
+ (let ((revs (split-string (hg-chomp
+ (hg-run0 "-q" "log" "-r"
+ (format "-%d"
+ hg-rev-completion-limit)
+ "-r" "tip"))
+ "[\n:]")))
+ (dolist (line (split-string (hg-chomp (hg-run0 "tags")) "\n"))
+ (setq revs (cons (car (split-string line "\\s-")) revs)))
+ (completing-read (format "Revision%s (%s): "
+ (or prompt "")
+ (or default "tip"))
+ (map 'list 'cons revs revs)
+ nil
+ nil
+ nil
+ 'hg-rev-history
+ (or default "tip")))
+ rev))))
+
+(defmacro hg-do-across-repo (path &rest body)
+ (let ((root-name (gensym "root-"))
+ (buf-name (gensym "buf-")))
+ `(let ((,root-name (hg-root ,path)))
+ (save-excursion
+ (dolist (,buf-name (buffer-list))
+ (set-buffer ,buf-name)
+ (when (and hg-status (equal (hg-root buffer-file-name) ,root-name))
+ ,@body))))))
+
+(put 'hg-do-across-repo 'lisp-indent-function 1)
+
;;; View mode bits.
@@ -341,7 +430,8 @@
(let ((state (assoc (substring output 0 (min (length output) 2))
'(("M " . modified)
("A " . added)
- ("R " . removed)))))
+ ("R " . removed)
+ ("? " . nil)))))
(if state
(cdr state)
'normal)))))
@@ -377,14 +467,59 @@
(message "%s" msg)))
(t
(pop-to-buffer view-buf-name)
+ (setq hg-prev-buffer ,prev-buf)
(hg-view-mode ,prev-buf ,@v-m-rest))))))
(put 'hg-view-output 'lisp-indent-function 1)
+;;; Context save and restore across revert.
+
+(defun hg-position-context (pos)
+ "Return information to help find the given position again."
+ (let* ((end (min (point-max) (+ pos 98))))
+ (list pos
+ (buffer-substring (max (point-min) (- pos 2)) end)
+ (- end pos))))
+
+(defun hg-buffer-context ()
+ "Return information to help restore a user's editing context.
+This is useful across reverts and merges, where a context is likely
+to have moved a little, but not really changed."
+ (let ((point-context (hg-position-context (point)))
+ (mark-context (let ((mark (mark-marker)))
+ (and mark (hg-position-context mark)))))
+ (list point-context mark-context)))
+
+(defun hg-find-context (ctx)
+ "Attempt to find a context in the given buffer.
+Always returns a valid, hopefully sane, position."
+ (let ((pos (nth 0 ctx))
+ (str (nth 1 ctx))
+ (fixup (nth 2 ctx)))
+ (save-excursion
+ (goto-char (max (point-min) (- pos 15000)))
+ (if (and (not (equal str ""))
+ (search-forward str nil t))
+ (- (point) fixup)
+ (max pos (point-min))))))
+
+(defun hg-restore-context (ctx)
+ "Attempt to restore the user's editing context."
+ (let ((point-context (nth 0 ctx))
+ (mark-context (nth 1 ctx)))
+ (goto-char (hg-find-context point-context))
+ (when mark-context
+ (set-mark (hg-find-context mark-context)))))
+
+
;;; Hooks.
-(defun hg-mode-line ()
- (when (hg-root)
+(defun hg-mode-line (&optional force)
+ "Update the modeline with the current status of a file.
+An update occurs if optional argument FORCE is non-nil,
+hg-update-modeline is non-nil, or we have not yet checked the state of
+the file."
+ (when (and (hg-root) (or force hg-update-modeline (not hg-mode)))
(let ((status (hg-file-status buffer-file-name)))
(setq hg-status status
hg-mode (and status (concat " Hg:"
@@ -396,41 +531,16 @@
(modified . "m")))))))
status)))
-(defun hg-find-file-hook ()
- (when (hg-mode-line)
- (run-hooks 'hg-mode-hook)))
-
-(add-hook 'find-file-hooks 'hg-find-file-hook)
-
-(defun hg-after-save-hook ()
- (let ((old-status hg-status))
- (hg-mode-line)
- (if (and (not old-status) hg-status)
- (run-hooks 'hg-mode-hook))))
-
-(add-hook 'after-save-hook 'hg-after-save-hook)
-
-
-;;; User interface functions.
+(defun hg-mode ()
+ "Minor mode for Mercurial distributed SCM integration.
-(defun hg-help-overview ()
- "This is an overview of the Mercurial SCM mode for Emacs.
-
-You can find the source code, license (GPL v2), and credits for this
-code by typing `M-x find-library mercurial RET'.
+The Mercurial mode user interface is based on that of VC mode, so if
+you're already familiar with VC, the same keybindings and functions
+will generally work.
-The Mercurial mode user interface is based on that of the older VC
-mode, so if you're already familiar with VC, the same keybindings and
-functions will generally work.
-
-Below is a list of common SCM tasks, with the key bindings needed to
-perform them, and the command names. This list is not exhaustive.
-
-In the list below, `G/L' indicates whether a key binding is global (G)
-or local (L). Global keybindings work on any file inside a Mercurial
-repository. Local keybindings only apply to files under the control
-of Mercurial. Many commands take a prefix argument.
-
+Below is a list of many common SCM tasks. In the list, `G/L'
+indicates whether a key binding is global (G) to a repository or local
+(L) to a file. Many commands take a prefix argument.
SCM Task G/L Key Binding Command Name
-------- --- ----------- ------------
@@ -438,14 +548,14 @@
Tell Mercurial to manage a file G C-c h a hg-add
Commit changes to current file only L C-x v n hg-commit
-Undo changes to file since commit L C-x v u hg-revert-file
+Undo changes to file since commit L C-x v u hg-revert-buffer
Diff file vs last checkin L C-x v = hg-diff
View file change history L C-x v l hg-log
View annotated file L C-x v a hg-annotate
-Diff repo vs last checkin G C-c h = hg-diff
+Diff repo vs last checkin G C-c h = hg-diff-repo
View status of files in repo G C-c h s hg-status
Commit all changes G C-c h c hg-commit
@@ -457,11 +567,41 @@
Update working directory after pull G C-c h u hg-update
See changes that can be pushed G C-c h . hg-outgoing
Push changes G C-c h > hg-push"
+ (run-hooks 'hg-mode-hook))
+
+(defun hg-find-file-hook ()
+ (when (hg-mode-line)
+ (hg-mode)))
+
+(add-hook 'find-file-hooks 'hg-find-file-hook)
+
+(defun hg-after-save-hook ()
+ (let ((old-status hg-status))
+ (hg-mode-line)
+ (if (and (not old-status) hg-status)
+ (hg-mode))))
+
+(add-hook 'after-save-hook 'hg-after-save-hook)
+
+
+;;; User interface functions.
+
+(defun hg-help-overview ()
+ "This is an overview of the Mercurial SCM mode for Emacs.
+
+You can find the source code, license (GPL v2), and credits for this
+code by typing `M-x find-library mercurial RET'."
(interactive)
(hg-view-output ("Mercurial Help Overview")
- (insert (documentation 'hg-help-overview))))
+ (insert (documentation 'hg-help-overview))
+ (let ((pos (point)))
+ (insert (documentation 'hg-mode))
+ (goto-char pos)
+ (kill-line))))
(defun hg-add (path)
+ "Add PATH to the Mercurial repository on the next commit.
+With a prefix argument, prompt for the path to add."
(interactive (list (hg-read-file-name " to add")))
(let ((buf (current-buffer))
(update (equal buffer-file-name path)))
@@ -479,16 +619,179 @@
(interactive)
(error "not implemented"))
-(defun hg-commit ()
+(defun hg-commit-toggle-file (pos)
+ "Toggle whether or not the file at POS will be committed."
+ (interactive "d")
+ (save-excursion
+ (goto-char pos)
+ (let ((face (get-text-property pos 'face))
+ (inhibit-read-only t)
+ bol)
+ (beginning-of-line)
+ (setq bol (+ (point) 4))
+ (end-of-line)
+ (if (eq face 'bold)
+ (progn
+ (remove-text-properties bol (point) '(face nil))
+ (message "%s will not be committed"
+ (buffer-substring bol (point))))
+ (add-text-properties bol (point) '(face bold))
+ (message "%s will be committed"
+ (buffer-substring bol (point)))))))
+
+(defun hg-commit-mouse-clicked (event)
+ "Toggle whether or not the file at POS will be committed."
+ (interactive "@e")
+ (hg-commit-toggle-file (hg-event-point event)))
+
+(defun hg-commit-kill ()
+ "Kill the commit currently being prepared."
+ (interactive)
+ (when (or (not (buffer-modified-p)) (y-or-n-p "Really kill this commit? "))
+ (let ((buf hg-prev-buffer))
+ (kill-buffer nil)
+ (switch-to-buffer buf))))
+
+(defun hg-commit-finish ()
+ "Finish preparing a commit, and perform the actual commit.
+The hook hg-pre-commit-hook is run before anything else is done. If
+the commit message is empty and hg-commit-allow-empty-message is nil,
+an error is raised. If the list of files to commit is empty and
+hg-commit-allow-empty-file-list is nil, an error is raised."
(interactive)
- (error "not implemented"))
+ (let ((root hg-root))
+ (save-excursion
+ (run-hooks 'hg-pre-commit-hook)
+ (goto-char (point-min))
+ (search-forward hg-commit-message-start)
+ (let (message files)
+ (let ((start (point)))
+ (goto-char (point-max))
+ (search-backward hg-commit-message-end)
+ (setq message (hg-strip (buffer-substring start (point)))))
+ (when (and (= (length message) 0)
+ (not hg-commit-allow-empty-message))
+ (error "Cannot proceed - commit message is empty"))
+ (forward-line 1)
+ (beginning-of-line)
+ (while (< (point) (point-max))
+ (let ((pos (+ (point) 4)))
+ (end-of-line)
+ (when (eq (get-text-property pos 'face) 'bold)
+ (end-of-line)
+ (setq files (cons (buffer-substring pos (point)) files))))
+ (forward-line 1))
+ (when (and (= (length files) 0)
+ (not hg-commit-allow-empty-file-list))
+ (error "Cannot proceed - no files to commit"))
+ (setq message (concat message "\n"))
+ (apply 'hg-run0 "--cwd" hg-root "commit" "-m" message files))
+ (let ((buf hg-prev-buffer))
+ (kill-buffer nil)
+ (switch-to-buffer buf))
+ (hg-do-across-repo root
+ (hg-mode-line)))))
+
+(defun hg-commit-mode ()
+ "Mode for describing a commit of changes to a Mercurial repository.
+This involves two actions: describing the changes with a commit
+message, and choosing the files to commit.
+
+To describe the commit, simply type some text in the designated area.
+
+By default, all modified, added and removed files are selected for
+committing. Files that will be committed are displayed in bold face\;
+those that will not are displayed in normal face.
+
+To toggle whether a file will be committed, move the cursor over a
+particular file and hit space or return. Alternatively, middle click
+on the file.
+
+Key bindings
+------------
+\\[hg-commit-finish] proceed with commit
+\\[hg-commit-kill] kill commit
+
+\\[hg-diff-repo] view diff of pending changes"
+ (interactive)
+ (use-local-map hg-commit-mode-map)
+ (set-syntax-table text-mode-syntax-table)
+ (setq local-abbrev-table text-mode-abbrev-table
+ major-mode 'hg-commit-mode
+ mode-name "Hg-Commit")
+ (set-buffer-modified-p nil)
+ (setq buffer-undo-list nil)
+ (run-hooks 'text-mode-hook 'hg-commit-mode-hook))
+
+(defun hg-commit-start ()
+ "Prepare a commit of changes to the repository containing the current file."
+ (interactive)
+ (while hg-prev-buffer
+ (set-buffer hg-prev-buffer))
+ (let ((root (hg-root))
+ (prev-buffer (current-buffer))
+ modified-files)
+ (unless root
+ (error "Cannot commit outside a repository!"))
+ (hg-do-across-repo
+ (vc-buffer-sync))
+ (setq modified-files (hg-chomp (hg-run0 "--cwd" root "status" "-arm")))
+ (when (and (= (length modified-files) 0)
+ (not hg-commit-allow-empty-file-list))
+ (error "No pending changes to commit"))
+ (let* ((buf-name (format "*Mercurial: Commit %s*" root)))
+ (pop-to-buffer (get-buffer-create buf-name))
+ (when (= (point-min) (point-max))
+ (set (make-local-variable 'hg-root) root)
+ (setq hg-prev-buffer prev-buffer)
+ (insert "\n")
+ (let ((bol (point)))
+ (insert hg-commit-message-end)
+ (add-text-properties bol (point) '(face bold-italic)))
+ (let ((file-area (point)))
+ (insert modified-files)
+ (goto-char file-area)
+ (while (< (point) (point-max))
+ (let ((bol (point)))
+ (forward-char 1)
+ (insert " ")
+ (end-of-line)
+ (add-text-properties (+ bol 4) (point)
+ '(face bold mouse-face highlight)))
+ (forward-line 1))
+ (goto-char file-area)
+ (add-text-properties (point) (point-max)
+ `(keymap ,hg-commit-mode-file-map))
+ (goto-char (point-min))
+ (insert hg-commit-message-start)
+ (add-text-properties (point-min) (point) '(face bold-italic))
+ (insert "\n\n")
+ (forward-line -1)
+ (save-excursion
+ (goto-char (point-max))
+ (search-backward hg-commit-message-end)
+ (add-text-properties (match-beginning 0) (point-max)
+ '(read-only t))
+ (goto-char (point-min))
+ (search-forward hg-commit-message-start)
+ (add-text-properties (match-beginning 0) (match-end 0)
+ '(read-only t)))
+ (hg-commit-mode))))))
(defun hg-diff (path &optional rev1 rev2)
+ "Show the differences between REV1 and REV2 of PATH.
+When called interactively, the default behaviour is to treat REV1 as
+the tip revision, REV2 as the current edited version of the file, and
+PATH as the file edited in the current buffer.
+With a prefix argument, prompt for all of these."
(interactive (list (hg-read-file-name " to diff")
(hg-read-rev " to start with")
(let ((rev2 (hg-read-rev " to end with" 'working-dir)))
(and (not (eq rev2 'working-dir)) rev2))))
- (let ((a-path (hg-abbrev-file-name path)))
+ (unless rev1
+ (setq rev1 "-1"))
+ (let ((a-path (hg-abbrev-file-name path))
+ diff)
(hg-view-output ((if (equal rev1 rev2)
(format "Mercurial: Rev %s of %s" rev1 a-path)
(format "Mercurial: Rev %s to %s of %s"
@@ -497,9 +800,20 @@
(call-process (hg-binary) nil t nil "diff" "-r" rev1 "-r" rev2 path)
(call-process (hg-binary) nil t nil "diff" "-r" rev1 path))
(diff-mode)
- (font-lock-fontify-buffer))))
+ (setq diff (not (= (point-min) (point-max))))
+ (font-lock-fontify-buffer))
+ diff))
+
+(defun hg-diff-repo ()
+ "Show the differences between the working copy and the tip revision."
+ (interactive)
+ (hg-diff (hg-root)))
(defun hg-forget (path)
+ "Lose track of PATH, which has been added, but not yet committed.
+This will prevent the file from being incorporated into the Mercurial
+repository on the next commit.
+With a prefix argument, prompt for the path to forget."
(interactive (list (hg-read-file-name " to forget")))
(let ((buf (current-buffer))
(update (equal buffer-file-name path)))
@@ -518,20 +832,34 @@
(error "not implemented"))
(defun hg-log (path &optional rev1 rev2)
+ "Display the revision history of PATH, between REV1 and REV2.
+REV1 defaults to the initial revision, while REV2 defaults to the tip.
+With a prefix argument, prompt for each parameter.
+Variable hg-log-limit controls the number of log entries displayed."
(interactive (list (hg-read-file-name " to log")
(hg-read-rev " to start with" "-1")
(hg-read-rev " to end with" (format "-%d" hg-log-limit))))
- (message "log %s %s" rev1 rev2)
- (sit-for 1)
(let ((a-path (hg-abbrev-file-name path)))
(hg-view-output ((if (equal rev1 rev2)
(format "Mercurial: Rev %s of %s" rev1 a-path)
(format "Mercurial: Rev %s to %s of %s"
rev1 (or rev2 "Current") a-path)))
- (call-process (hg-binary) nil t nil "log" "-r" rev1 "-r" rev2 path)
+ (if (> (length path) (length (hg-root path)))
+ (call-process (hg-binary) nil t nil "log" "-r" rev1 "-r" rev2 path)
+ (call-process (hg-binary) nil t nil "log" "-r" rev1 "-r" rev2))
(diff-mode)
(font-lock-fontify-buffer))))
+(defun hg-log-repo (path &optional rev1 rev2)
+ "Display the revision history of the repository containing PATH.
+History is displayed between REV1, which defaults to the tip, and
+REV2, which defaults to the initial revision.
+Variable hg-log-limit controls the number of log entries displayed."
+ (interactive (list (hg-read-file-name " to log")
+ (hg-read-rev " to start with" "tip")
+ (hg-read-rev " to end with" (format "-%d" hg-log-limit))))
+ (hg-log (hg-root path) rev1 rev2))
+
(defun hg-outgoing ()
(interactive)
(error "not implemented"))
@@ -544,33 +872,71 @@
(interactive)
(error "not implemented"))
-(defun hg-revert ()
- (interactive)
- (error "not implemented"))
+(defun hg-revert-buffer-internal ()
+ (let ((ctx (hg-buffer-context)))
+ (message "Reverting %s..." buffer-file-name)
+ (hg-run0 "revert" buffer-file-name)
+ (revert-buffer t t t)
+ (hg-restore-context ctx)
+ (hg-mode-line)
+ (message "Reverting %s...done" buffer-file-name)))
-(defun hg-revert-file ()
+(defun hg-revert-buffer ()
+ "Revert current buffer's file back to the latest committed version.
+If the file has not changed, nothing happens. Otherwise, this
+displays a diff and asks for confirmation before reverting."
(interactive)
- (error "not implemented"))
+ (let ((vc-suppress-confirm nil)
+ (obuf (current-buffer))
+ diff)
+ (vc-buffer-sync)
+ (unwind-protect
+ (setq diff (hg-diff buffer-file-name))
+ (when diff
+ (unless (yes-or-no-p "Discard changes? ")
+ (error "Revert cancelled")))
+ (when diff
+ (let ((buf (current-buffer)))
+ (delete-window (selected-window))
+ (kill-buffer buf))))
+ (set-buffer obuf)
+ (when diff
+ (hg-revert-buffer-internal))))
(defun hg-root (&optional path)
+ "Return the root of the repository that contains the given path.
+If the path is outside a repository, return nil.
+When called interactively, the root is printed. A prefix argument
+prompts for a path to check."
(interactive (list (hg-read-file-name)))
- (let ((root (do ((prev nil dir)
- (dir (file-name-directory (or path (buffer-file-name)))
- (file-name-directory (directory-file-name dir))))
- ((equal prev dir))
- (when (file-directory-p (concat dir ".hg"))
- (return dir)))))
- (when (interactive-p)
- (if root
- (message "The root of this repository is `%s'." root)
- (message "The path `%s' is not in a Mercurial repository."
- (abbreviate-file-name path t))))
- root))
+ (if (or path (not hg-root))
+ (let ((root (do ((prev nil dir)
+ (dir (file-name-directory (or path buffer-file-name ""))
+ (file-name-directory (directory-file-name dir))))
+ ((equal prev dir))
+ (when (file-directory-p (concat dir ".hg"))
+ (return dir)))))
+ (when (interactive-p)
+ (if root
+ (message "The root of this repository is `%s'." root)
+ (message "The path `%s' is not in a Mercurial repository."
+ (abbreviate-file-name path t))))
+ root)
+ hg-root))
(defun hg-status (path)
+ "Print revision control status of a file or directory.
+With prefix argument, prompt for the path to give status for.
+Names are displayed relative to the repository root."
(interactive (list (hg-read-file-name " for status" (hg-root))))
(let ((root (hg-root)))
- (hg-view-output (hg-output-buffer-name)
+ (hg-view-output ((format "Mercurial: Status of %s in %s"
+ (let ((name (substring (expand-file-name path)
+ (length root))))
+ (if (> (length name) 0)
+ name
+ "*"))
+ (hg-abbrev-file-name root)))
(apply 'call-process (hg-binary) nil t nil
(list "--cwd" root "status" path)))))
@@ -587,6 +953,5 @@
;;; Local Variables:
-;;; mode: emacs-lisp
;;; prompt-to-byte-compile: nil
;;; end: