emacs: calling chmod causes "file is no longer readable" warning -


i'm writing function designed make whatever file in current buffer writable without being prompted name or mode (which want 644). want buffer refreshed automatically reflect fact contents writable.

i have following code in .emacs file:

;; http://www.stokebloke.com/wordpress/2008/04/17/emacs-refresh-f5-key/ (defun refresh-file ()   "refresh buffer disk (prompt if modified)."   (interactive)   (revert-buffer t (not (buffer-modified-p)) t))  (defun my-make-writable ()    "make file writable owner"    (interactive)    (chmod buffer-file-name 644)    (refresh-file))

however, when execute function, emacs displays following error message in minibuffer:

file filename no longer readable

this rather unnerving. however, can still execute "chmod" command make file readable , writable.

what can make function work correctly?

the unix permission bits expressed in octal , feeding in decimal number.

you setting file mode 1204 (that is, "sticky-bit, user can write, group has no permissions, else can read). if use (chmod buffer-file-name #o644) or (chmod buffer-file-name 420) result expecting.


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