call <SID>NM_set_map('n', g:notmuch_compose_nmaps)
call <SID>NM_set_map('i', g:notmuch_compose_imaps)
call cursor(start_on_line, strlen(start_on_line) + 1)
call <SID>NM_set_map('n', g:notmuch_compose_nmaps)
call <SID>NM_set_map('i', g:notmuch_compose_imaps)
call cursor(start_on_line, strlen(start_on_line) + 1)