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-rw-r--r--lisp/image.el1
1 files changed, 1 insertions, 0 deletions
diff --git a/lisp/image.el b/lisp/image.el
index e084fe329af..8d12b680ea9 100644
--- a/lisp/image.el
+++ b/lisp/image.el
@@ -248,6 +248,7 @@ compatibility with versions of Emacs that lack the variable
;; Used to be in image-type-header-regexps, but now not used anywhere
;; (since 2009-08-28).
(defun image-jpeg-p (data)
+ (declare (obsolete "It is unused inside Emacs and will be removed." "27.1"))
"Value is non-nil if DATA, a string, consists of JFIF image data.
We accept the tag Exif because that is the same format."
(setq data (ignore-errors (string-to-unibyte data)))