Variable: image-dired-cmd-rotate-original-options
image-dired-cmd-rotate-original-options is a customizable variable
defined in image-dired-external.el.gz.
Value
("-rotate" "%d" "-copy" "all" "-outfile" "%t" "%o")
Documentation
Arguments of command used to rotate original image.
Used with image-dired-cmd-rotate-original-program.
The value can use the following format specifiers:
%d which is replaced by the number of (positive) degrees
to rotate the image, normally 90 or 270 (for 90 degrees right and left),
%o which is replaced by the original image file name
and %t which is replaced by image-dired-temp-image-file.
This variable was added, or its default value changed, in Emacs 26.1.
Probably introduced at or before Emacs version 26.1.
Source Code
;; Defined in /usr/src/emacs/lisp/image/image-dired-external.el.gz
(defcustom image-dired-cmd-rotate-original-options
'("-rotate" "%d" "-copy" "all" "-outfile" "%t" "%o")
"Arguments of command used to rotate original image.
Used with `image-dired-cmd-rotate-original-program'.
The value can use the following format specifiers:
%d which is replaced by the number of (positive) degrees
to rotate the image, normally 90 or 270 (for 90 degrees right and left),
%o which is replaced by the original image file name
and %t which is replaced by `image-dired-temp-image-file'."
:version "26.1"
:type '(repeat (string :tag "Argument")))