+ exec printf('norm %dGzt', msg['start'])
+ " TODO: try to fit the message on screen
+ return
+ endfor
+ if a:can_change_thread
+ call <SID>NM_show_next_thread()
+ endif
+endfunction
+
+function! s:NM_show_next_thread()
+ call <SID>NM_kill_this_buffer()
+ if line('.') != line('$')
+ norm j
+ call <SID>NM_search_show_thread()
+ else
+ echo 'No more messages.'
+ endif
+endfunction
+
+function! s:NM_show_archive_thread()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_mark_read_then_archive_thread()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_mark_read_then_next_open_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_previous_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_reply()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_view_all_mime_parts()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_view_raw_message()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_add_tag()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_remove_tag()
+ echo 'not implemented'
+endfunction
+
+" if entire message is not visible scroll down 1/2 page or less to get to the bottom of message
+" otherwise go to next message
+" any message that is viewed entirely has inbox and unread tags removed
+function! s:NM_show_advance_marking_read_and_archiving()
+ let advance_tags = ['unread', 'inbox']
+
+ let vis_top = line('w0')
+ let vis_bot = line('w$')
+
+ let msg_top = <SID>NM_show_get_message_for_line(vis_top)
+ if !has_key(msg_top,'id')
+ echo "No top visible message."
+ endif
+
+ " if the top message is the last message, just expunge the entire thread and move on
+ if msg_top['end'] == line('$')
+ let ids = []
+ for msg in b:nm_raw_info['msgs']
+ if has_key(msg,'match') && msg['match'] != '0'
+ if len(ids)
+ call add(ids, 'OR')
+ endif
+ call add(ids, msg['id'])
+ endif
+ endfor
+
+ let filter = ['('] + advance_tags + [')', 'AND', '('] + ids + [')']
+ call <SID>NM_add_remove_tags(filter, '-', advance_tags)
+ call <SID>NM_show_next(1, 1)