suggestion: function: buffer-bytes

[T. V. Raman]

Emacs built-in buffer-size returns the number of characters ---
in some situations one needs the count of bytes. 
Here is a small function that does this --- perhaps it could be
ncluded in subr.el?

(defsubst buffer-bytes (&optional buffer)
  "Return number of bytes in a buffer."
  (save-excursion
    (and buffer (set-buffer buffer))
    (1- (position-bytes (point-max)))))

-- 
Best Regards,
--raman

      
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