flymake-display-err-menu-for-current-line does not work under -nw

[Ævar Arnfjörð Bjarmason]

flymake-display-err-menu-for-current-line does not work excpet under
X. Here's one implementation for text mode that I use which displays the
errors/warnings in the echo area instead of opening a menu:

(defun flymake-display-err-message-for-current-line ()
  "Display a message with errors/warnings for current line if it
has errors and/or warnings."
  (interactive)
  (let* ((line-no             (flymake-current-line-no))
         (line-err-info-list  (nth 0 (flymake-find-err-info flymake-err-info 
line-no)))
         (menu-data           (flymake-make-err-menu-data line-no 
line-err-info-list)))
    (if menu-data
        (let ((messages))
          (push (concat (car menu-data) ":") messages)
          (dolist (error-or-warning (cadr menu-data))
            (push (car error-or-warning) messages))
          (message "%s" (mapconcat #'identity (reverse messages) "\n"))))))

I want to get this or something like it into Emacs pending comments on
whether this implementation is even a good idea. Should it use
(message)? Would it be better to use a idle timer like eldoc-mode does?
Something completely different?