João Távora <joaotavora@gmail.com> writes:

I think you want
(defun sly-make-action-button (label action &rest props)
  (apply #'sly--make-text-button
         label nil :type 'sly-action
         'action action
         'mouse-action action
         props))

instead, since the new function returns a copy of label rather than the
string passed in.