(let ((cur (current-buffer)))
(save-excursion
(gnus-set-work-buffer)
- (insert (format "%s" (buffer-substring beg end cur)))
+ (insert-buffer-substring cur beg end)
(gnus-xmas-call-region "uncompface")
(goto-char (point-min))
(insert "/* Width=48, Height=48 */\n")