Engine: Fix when using over mu4e-conversation

.emacs.d/lisp/init-engine.el

@@ -1,5 +1,10 @@
 ;;; Engine mode
 
+;; REVIEW: Fix initial input default property:
+;; https://github.com/hrs/engine-mode/issues/43.
+(defun engine/prompted-search-term (engine-name)
+  (read-string (engine/search-prompt engine-name) (thing-at-point 'symbol 'no-properties)))
+
 (engine-mode)
 (require 'eww)