(defvar git-blame-ancient-color "dark green")
+(defvar git-blame-autoupdate t
+ "*Automatically update the blame display while editing")
+
(defvar git-blame-proc nil
"The running git-blame process")
(make-variable-buffer-local 'git-blame-proc)
"A cache of git-blame information for the current buffer")
(make-variable-buffer-local 'git-blame-cache)
+(defvar git-blame-idle-timer nil
+ "An idle timer that updates the blame")
+(make-variable-buffer-local 'git-blame-cache)
+
+(defvar git-blame-update-queue nil
+ "A queue of update requests")
+(make-variable-buffer-local 'git-blame-update-queue)
+
(defvar git-blame-mode nil)
(make-variable-buffer-local 'git-blame-mode)
(unless (assq 'git-blame-mode minor-mode-alist)
(setq git-blame-mode (eq arg 1))
(setq git-blame-mode (not git-blame-mode)))
(make-local-variable 'git-blame-colors)
+ (if git-blame-autoupdate
+ (add-hook 'after-change-functions 'git-blame-after-change nil t)
+ (remove-hook 'after-change-functions 'git-blame-after-change t))
(git-blame-cleanup)
(if git-blame-mode
(progn
(setq git-blame-colors git-blame-dark-colors)
(setq git-blame-colors git-blame-light-colors)))
(setq git-blame-cache (make-hash-table :test 'equal))
- (git-blame-run))))
+ (git-blame-run))
+ (cancel-timer git-blame-idle-timer)))
;;;###autoload
(defun git-reblame ()
(git-blame-cleanup)
(git-blame-run))
-(defun git-blame-run ()
+(defun git-blame-run (&optional startline endline)
(if git-blame-proc
;; Should maybe queue up a new run here
(message "Already running git blame")
(let ((display-buf (current-buffer))
(blame-buf (get-buffer-create
- (concat " git blame for " (buffer-name)))))
+ (concat " git blame for " (buffer-name))))
+ (args '("--incremental" "--contents" "-")))
+ (if startline
+ (setq args (append args
+ (list "-L" (format "%d,%d" startline endline)))))
+ (setq args (append args
+ (list (file-name-nondirectory buffer-file-name))))
(setq git-blame-proc
- (start-process "git-blame" blame-buf
- "git" "blame"
- "--incremental" "--contents" "-"
- (file-name-nondirectory buffer-file-name)))
+ (apply 'start-process
+ "git-blame" blame-buf
+ "git" "blame"
+ args))
(with-current-buffer blame-buf
(erase-buffer)
(make-local-variable 'git-blame-file)
(setq git-blame-overlays nil)
(remove-git-blame-text-properties (point-min) (point-max)))
+(defun git-blame-update-region (start end)
+ "Rerun blame to get updates between START and END"
+ (let ((overlays (overlays-in start end)))
+ (while overlays
+ (let ((overlay (pop overlays)))
+ (if (< (overlay-start overlay) start)
+ (setq start (overlay-start overlay)))
+ (if (> (overlay-end overlay) end)
+ (setq end (overlay-end overlay)))
+ (setq git-blame-overlays (delete overlay git-blame-overlays))
+ (delete-overlay overlay))))
+ (remove-git-blame-text-properties start end)
+ ;; We can be sure that start and end are at line breaks
+ (git-blame-run (1+ (count-lines (point-min) start))
+ (count-lines (point-min) end)))
+
(defun git-blame-sentinel (proc status)
(with-current-buffer (process-buffer proc)
(with-current-buffer git-blame-file
- (setq git-blame-proc nil)))
+ (setq git-blame-proc nil)
+ (if git-blame-update-queue
+ (git-blame-delayed-update))))
;;(kill-buffer (process-buffer proc))
;;(message "git blame finished")
)
(save-excursion
(set-buffer git-blame-file)
(let ((info (gethash hash git-blame-cache))
- (inhibit-point-motion-hooks t))
+ (inhibit-point-motion-hooks t)
+ (inhibit-modification-hooks t))
(when (not info)
(let ((color (pop git-blame-colors)))
(unless color
(message "%s" (nth 4 info))
(setq git-blame-last-identification info))))
+;; (defun git-blame-after-save ()
+;; (when git-blame-mode
+;; (git-blame-cleanup)
+;; (git-blame-run)))
+;; (add-hook 'after-save-hook 'git-blame-after-save)
+
+(defun git-blame-after-change (start end length)
+ (when git-blame-mode
+ (git-blame-enq-update start end)))
+
+(defvar git-blame-last-update nil)
+(make-variable-buffer-local 'git-blame-last-update)
+(defun git-blame-enq-update (start end)
+ "Mark the region between START and END as needing blame update"
+ ;; Try to be smart and avoid multiple callouts for sequential
+ ;; editing
+ (cond ((and git-blame-last-update
+ (= start (cdr git-blame-last-update)))
+ (setcdr git-blame-last-update end))
+ ((and git-blame-last-update
+ (= end (car git-blame-last-update)))
+ (setcar git-blame-last-update start))
+ (t
+ (setq git-blame-last-update (cons start end))
+ (setq git-blame-update-queue (nconc git-blame-update-queue
+ (list git-blame-last-update)))))
+ (unless (or git-blame-proc git-blame-idle-timer)
+ (setq git-blame-idle-timer
+ (run-with-idle-timer 0.5 nil 'git-blame-delayed-update))))
+
+(defun git-blame-delayed-update ()
+ (setq git-blame-idle-timer nil)
+ (if git-blame-update-queue
+ (let ((first (pop git-blame-update-queue))
+ (inhibit-point-motion-hooks t))
+ (git-blame-update-region (car first) (cdr first)))))
+
(provide 'git-blame)
;;; git-blame.el ends here