65 lines
2.7 KiB
EmacsLisp
65 lines
2.7 KiB
EmacsLisp
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;; additional functions
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;; taken from https://r0tty.org/git/dotfiles/emacs
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(defvar revert-some-buffers-action-alist
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'((?\C-r
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(lambda (buf)
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(view-buffer buf
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(lambda (ignore)
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(exit-recursive-edit)))
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(recursive-edit)
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;; Return nil to ask about BUF again.
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nil)
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"view this buffer")
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(?d (lambda (buf)
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(save-window-excursion
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(diff-buffer-with-file buf))
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(view-buffer (get-buffer-create "*Diff*")
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(lambda (ignore) (exit-recursive-edit)))
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(recursive-edit)
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nil)
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"view changes in this buffer"))
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"ACTION-ALIST argument used in call to `map-y-or-n-p'.")
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;; Code/docstring taken from Emacs' `save-some-buffers' and hacked.
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(defun revert-some-buffers (&optional arg pred)
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"Revert some modified file-visiting buffers. Asks user about each one.
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You can answer `y' to revert, `n' not to revert, `C-r' to look at the
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buffer in question with `view-buffer' before deciding or `d' to
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view the differences using `diff-buffer-with-file'.
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Optional argument (the prefix) non-nil means revert all with no questions.
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Optional second argument PRED determines which buffers are considered:
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If PRED is nil, all the file-visiting buffers are considered.
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If PRED is t, then certain non-file buffers will also be considered.
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If PRED is a zero-argument function, it indicates for each buffer whether
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to consider it or not when called with that buffer current."
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(interactive "P")
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(save-window-excursion
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(let (queried files-done)
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;; Ask about those buffers that merit it,
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;; and record the number thus reverted.
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(setq files-done
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(map-y-or-n-p
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(function
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(lambda (buffer)
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(and (not (buffer-modified-p buffer))
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(not (buffer-base-buffer buffer))
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(buffer-file-name buffer)
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(not (verify-visited-file-modtime buffer))
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(file-exists-p (buffer-file-name buffer))
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(or (not (functionp pred))
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(with-current-buffer buffer (funcall pred)))
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(if arg
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t
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(setq queried t)
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(format "Revert file %s? " (buffer-file-name buffer))))))
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(function
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(lambda (buffer)
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(set-buffer buffer)
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(revert-buffer 'ignore-auto 'dont-ask 'preserve-modes)))
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(buffer-list)
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'("buffer" "buffers" "save")
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revert-some-buffers-action-alist))
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(or queried (> files-done 0)
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(message "(No files need reverting)")))))
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