There is a separate package to browse widgets, in ‘wid-browse.el’. This is intended to help programmers who want to examine the content of a widget. The browser shows the value of each keyword, but uses links for certain keywords such as ‘:parent’, which avoids printing cyclic structures.
Create a widget browser for widget.
When called interactively, prompt for widget.
Create a widget browser for widget and show it in another window.
When called interactively, prompt for widget.
Create a widget browser for the widget at pos.
When called interactively, use the position of point.
In addition, there’s a function to describe the widget at point.
Describe the widget at point.
When called from Lisp, widget-or-pos might be the widget to
describe or a buffer position where a widget is present. If
widget-or-pos is nil, the widget to describe is the
widget at point.
This command sets up a help buffer for providing information about the
widget, mainly its :action and :mouse-down-action
functions, and provides links to describe it in more detail using the
widget-browse commands described above.