+ (goto-char start)
+ (add-text-properties (point)
+ (progn
+ (insert (epa--decode-coding-string
+ signature
+ (or coding-system-for-read
+ epa-last-coding-system-specified)))
+ (point))
+ (list 'epa-coding-system-used
+ epa-last-coding-system-specified
+ 'front-sticky nil
+ 'rear-nonsticky t
+ 'start-open t
+ 'end-open t)))))
+
+(if (fboundp 'derived-mode-p)
+ (defalias 'epa--derived-mode-p 'derived-mode-p)
+ (defun epa--derived-mode-p (&rest modes)
+ "Non-nil if the current major mode is derived from one of MODES.
+Uses the `derived-mode-parent' property of the symbol to trace backwards."
+ (let ((parent major-mode))
+ (while (and (not (memq parent modes))
+ (setq parent (get parent 'derived-mode-parent))))
+ parent)))