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Explicitly offer vlf-prefix-map so user can easily define another prefix

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for vlf-mode-map.  Remove vlf-refresh and refine vlf-revert.
This commit is contained in:
Andrey Kotlarski 2013-12-11 02:56:01 +02:00
parent c68c34ea90
commit a0cafa71ea
1 changed files with 21 additions and 26 deletions
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41
vlf.el
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@ -74,11 +74,10 @@ Possible values are: nil to never use it;
(put 'vlf-file-size 'permanent-local t)
(defvar vlf-mode-map
(let ((map-prefix (make-sparse-keymap))
(map (make-sparse-keymap)))
(define-key map [next] 'vlf-next-batch)
(define-key map [prior] 'vlf-prev-batch)
(define-key map "n" 'vlf-next-batch-from-point)
(let ((map (make-sparse-keymap)))
(define-key map "n" 'vlf-next-batch)
(define-key map "p" 'vlf-prev-batch)
(define-key map " " 'vlf-next-batch-from-point)
(define-key map "+" 'vlf-change-batch-size)
(define-key map "-"
(lambda () "Decrease vlf batch size by factor of 2."
@ -91,16 +90,21 @@ Possible values are: nil to never use it;
(define-key map "]" 'vlf-end-of-file)
(define-key map "j" 'vlf-jump-to-chunk)
(define-key map "l" 'vlf-goto-line)
(define-key map "g" 'vlf-refresh)
(define-key map-prefix "\C-c\C-v" map)
map-prefix)
(define-key map "g" 'vlf-revert)
map)
"Keymap for `vlf-mode'.")
(defvar vlf-prefix-map
(let ((map (make-sparse-keymap)))
(define-key map "\C-c\C-v" vlf-mode-map)
map)
"Prefixed keymap for `vlf-mode'.")
(define-minor-mode vlf-mode
"Mode to browse large files in."
:lighter " VLF"
:group 'vlf
:keymap vlf-mode-map
:keymap vlf-prefix-map
(if vlf-mode
(progn
(set (make-local-variable 'require-final-newline) nil)
@ -275,9 +279,11 @@ With FROM-END prefix, start from the back."
(defun vlf-revert (&optional _ignore-auto noconfirm)
"Revert current chunk. Ignore _IGNORE-AUTO.
Ask for confirmation if NOCONFIRM is nil."
(if (or noconfirm
(interactive)
(when (or noconfirm
(yes-or-no-p (format "Revert buffer from file %s? "
buffer-file-name)))
(set-buffer-modified-p nil)
(vlf-move-to-chunk-2 vlf-start-pos vlf-end-pos)))
(defun vlf-jump-to-chunk (n)
@ -311,8 +317,7 @@ When prefix argument is negative
append next APPEND number of batches to the existing buffer."
(interactive "p")
(vlf-verify-size)
(let* ((end (min (+ vlf-end-pos (* vlf-batch-size
(abs append)))
(let* ((end (min (+ vlf-end-pos (* vlf-batch-size (abs append)))
vlf-file-size))
(start (if (< append 0)
vlf-start-pos
@ -328,8 +333,7 @@ When prefix argument is negative
(interactive "p")
(if (zerop vlf-start-pos)
(error "Already at BOF"))
(let* ((start (max 0 (- vlf-start-pos (* vlf-batch-size
(abs prepend)))))
(let* ((start (max 0 (- vlf-start-pos (* vlf-batch-size (abs prepend)))))
(end (if (< prepend 0)
vlf-end-pos
(+ start vlf-batch-size))))
@ -901,15 +905,6 @@ in file: %s" total-matches line regexp file)
(vlf-occur-mode))
(display-buffer occur-buffer)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; editing
(defun vlf-refresh ()
"Discard edit and refresh chunk from file."
(interactive)
(set-buffer-modified-p nil)
(vlf-move-to-chunk-2 vlf-start-pos vlf-end-pos))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; saving