this option suppressed the confirmation in @code{mh-kill-folder}.
Since this kept most users from setting this option,
@code{mh-kill-folder} was modified in version 6.0 to always ask for
-confirmation subject to @code{mh-kill-folder-suppress-prompt-hook}.
+confirmation subject to @code{mh-kill-folder-suppress-prompt-functions}.
@xref{Folders}.}.
@cindex MH-Folder mode
Hook run by @code{mh-folder-mode} when visiting a new folder (default:
@code{nil}).
@c -------------------------
-@item mh-kill-folder-suppress-prompt-hook
+@item mh-kill-folder-suppress-prompt-functions
Abnormal hook run at the beginning of @code{mh-kill-folder} (default:
@code{'mh-search-p}).
@c -------------------------