This option controls whether and how to use Gnus search groups as
'path:' search terms to 'notmuch'.
+---
++++ The buttons in the Gnus article buffer were formerly widgets
+(i.e., buttons from widget.el). This has now changed, and they are
+now buttons (from button.el), and commands like 'TAB' now search for
+buttons instead of widgets. There should be no user-visible changes,
+but out-of-tree code that relied on widgets being present might now
+fail.
+
** erc
---