Is it possible to use a group widget as node of tree widget?
As far as trying following code, a group widget is not handled well.
(defun tree-test ()
(interactive)
(switch-to-buffer "TREE-GROUP-NODE-TEST")
(kill-all-local-variables)
(let ((inhibit-read-only t))
(erase-buffer))
(widget-create
'tree-widget
:open t
:node '(group (push-button
:tag "Root"
:format "%[%t%]\n")))
(use-local-map widget-keymap)
(widget-setup))
M-x tree-test and click "Root" node. Then string "Root" is gone.
Masatake YAMATO
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