(goto-char (- beg-sub 1))
(insert (concat "\n" indent))
(insert-button cite-button-text
'invisibility-spec invis-spec
:type 'notmuch-button-citation-toggle-type)
(goto-char (- beg-sub 1))
(insert (concat "\n" indent))
(insert-button cite-button-text
'invisibility-spec invis-spec
:type 'notmuch-button-citation-toggle-type)