121 lines
3.7 KiB
EmacsLisp
121 lines
3.7 KiB
EmacsLisp
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;;; revert-buffer-all.el --- Revert all open buffers -*- lexical-binding: t -*-
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;; SPDX-License-Identifier: GPL-2.0-or-later
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;; Copyright (C) 2021 Campbell Barton
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;; Author: Campbell Barton <ideasman42@gmail.com>
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;; URL: https://codeberg.org/ideasman42/emacs-buffer-revert-all
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;; Version: 0.1
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;; Package-Requires: ((emacs "24.3"))
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;;; Commentary:
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;; Utility to revert all buffers, useful to run after external
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;; changes to a project have been made such as applying a patch
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;; or switching branches.
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;;
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;;; Usage:
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;; ;; Bind the keys
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;; (global-set-key (kbd "C-S-M-r") 'revert-buffer-all)
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;;; Code:
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(eval-when-compile
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;; For `pcase-dolist'.
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(require 'pcase))
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;;;###autoload
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(defun revert-buffer-all ()
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"Refresh all open buffers from their respective files.
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Buffers which no longer exist are closed.
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This can be useful when updating or checking out branches outside of Emacs."
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(interactive)
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(let* ((filename-and-buffer-list
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;; Pairs of '(filename . buf)'.
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(let ((temp-list nil))
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(dolist (buf (buffer-list))
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(let ((filename (buffer-file-name buf)))
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(when filename
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(push (cons filename buf) temp-list))))
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temp-list))
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(message-prefix "Buffer Revert All:")
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(count (length filename-and-buffer-list))
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(count-final 0)
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(count-close 0)
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(count-error 0)
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;; Keep text at a fixed width when redrawing.
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(format-count (format "%%%dd" (length (number-to-string count))))
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(format-text
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(concat message-prefix " reverting [" format-count " of " format-count "] %3d%%: %s"))
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(index 1))
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(message "%s beginning with %d buffers..." message-prefix count)
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(pcase-dolist (`(,filename . ,buf) filename-and-buffer-list)
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;; Revert only buffers containing files, which are not modified;
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;; do not try to revert non-file buffers such as '*Messages*'.
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(message format-text index count (round (* 100 (/ (float index) count))) filename)
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(cond
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((file-exists-p filename)
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;; If the file exists, revert the buffer.
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(cond
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((with-demoted-errors "Error: %S"
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(with-current-buffer buf
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(let ((no-undo (eq buffer-undo-list t)))
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;; Disable during revert.
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(unless no-undo
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(setq buffer-undo-list t)
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(setq pending-undo-list nil))
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(unwind-protect
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(revert-buffer :ignore-auto :noconfirm)
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;; Enable again (always run).
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(unless no-undo
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;; It's possible a plugin loads undo data from disk,
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;; check if this is still unset.
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(when (and (eq buffer-undo-list t) (null pending-undo-list))
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(setq buffer-undo-list nil))))))
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t)
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(setq count-final (1+ count-final)))
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(t
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(setq count-error (1+ count-error)))))
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(t
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;; If the file doesn't exist, kill the buffer.
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;; No query done when killing buffer.
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(let ((kill-buffer-query-functions nil))
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(message "%s closing non-existing file buffer: %s" message-prefix buf)
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(kill-buffer buf)
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(setq count-close (1+ count-close)))))
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(setq index (1+ index)))
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(message
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(concat
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message-prefix (format " finished with %d buffer(s)" count-final)
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(cond
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((zerop count-close)
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"")
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(t
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(format ", %d closed" count-close)))
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(cond
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((zerop count-error)
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"")
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(t
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(format ", %d error (see message buffer)" count-error)))))))
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(provide 'revert-buffer-all)
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;; Local Variables:
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;; fill-column: 99
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;; indent-tabs-mode: nil
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;; End:
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;;; revert-buffer-all.el ends here
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