In emacs, is there a way to Hex edit/view a buffer without losing the undo info?
6,855
Here is a function which copies the contents of the current buffer into a new buffer and runs hexl-mode on that:
(defun hexify-buffer-copy()
"Edit current buffer in hexl mode by copying it"
(let ((orig-buffer (current-buffer)))
(switch-to-buffer (create-file-buffer
(buffer-file-name orig-buffer)))
(insert-buffer orig-buffer)
(setq buffer-undo-list nil)
(hexl-mode)))
Run with M-: (hexify-buffer-copy)
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Author by
Peter.O
Updated on September 18, 2022Comments
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Peter.O over 1 year
When I use hexl-mode in emacs, it discards the buffer's undo info.
Is there another way to hex-edit the buffer and yet retain the undo info?If there is no alternative hex-editor, is there a hex-viewer which can view the buffer? I have tried hexview-mode, but it doesn't view the actual buffer; it views the buffer's file (from disk), so I don't see the current edit.