+function! s:NM_show_next(can_change_thread)
+ let info = b:nm_raw_info
+ let lnum = line('.')
+ for msg in info['msgs']
+ if lnum >= msg['start']
+ continue
+ endif
+
+ exec printf('norm %dG', msg['start'])
+ " TODO: try to fit the message on screen
+ norm zz
+ return
+ endfor
+ if !a:can_change_thread
+ return
+ endif
+ 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_next_message()
+ 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
+
+function! s:NM_show_advance_marking_read_and_archiving()
+ echo 'not implemented'
+endfunction
+
+function! s:NM_show_pipe_message()
+ echo 'not implemented'
+endfunction
+
+" --- --- search screen helper functions {{{2
+
+function! s:NM_show_fold_toggle(key, type, fold)
+ let info = b:nm_raw_info
+ let act = 'open'
+ if a:fold
+ let act = 'close'
+ endif
+ for fld in info['folds']
+ if fld[0] == a:type
+ exec printf('%dfold%s', fld[1], act)
+ endif
+ endfor
+ exec printf('nnoremap <buffer> %s :call <SID>NM_show_fold_toggle(''%s'', ''%s'', %d)<CR>', a:key, a:key, a:type, !a:fold)
+endfunction
+
+
+" s:NM_cmd_show_parse returns the following dictionary:
+" 'disp': lines to display
+" 'msgs': message info dicts { start, end, id, depth, filename, descr, header }
+" 'folds': fold info arrays [ type, start, end ]
+" 'foldtext': fold text indexed by start line
+function! s:NM_cmd_show_parse(inlines)
+ let info = { 'disp': [],
+ \ 'msgs': [],
+ \ 'folds': [],
+ \ 'foldtext': {} }
+ let msg = {}
+ let hdr = {}
+
+ let in_message = 0
+ let in_header = 0
+ let in_body = 0
+ let in_part = ''
+
+ let body_start = -1
+ let part_start = -1
+
+ let mode_type = ''
+ let mode_start = -1
+
+ let inlnum = 0
+ for line in a:inlines
+ let inlnum = inlnum + 1
+ let foldinfo = []
+
+ if strlen(in_part)
+ let part_end = 0
+
+ if match(line, g:notmuch_show_part_end_regexp) != -1
+ let part_end = len(info['disp'])
+ else
+ call add(info['disp'], line)
+ endif
+
+ if in_part == 'text/plain'
+ if !part_end && mode_type == ''
+ if match(line, g:notmuch_show_signature_regexp) != -1
+ let mode_type = 'sig'
+ let mode_start = len(info['disp'])
+ elseif match(line, g:notmuch_show_citation_regexp) != -1
+ let mode_type = 'cit'
+ let mode_start = len(info['disp'])
+ endif
+ elseif mode_type == 'cit'
+ if part_end || match(line, g:notmuch_show_citation_regexp) == -1
+ let outlnum = len(info['disp'])
+ if mode_start != outlnum
+ let foldinfo = [ mode_type, mode_start, outlnum-1,
+ \ printf('[ %d-line citation. Press "c" to show. ]', outlnum - mode_start) ]
+ endif
+ let mode_type = ''
+ endif
+ elseif mode_type == 'sig'
+ let outlnum = len(info['disp'])
+ if (outlnum - mode_start) > g:notmuch_show_signature_lines_max
+ let mode_type = ''
+ elseif part_end
+ if mode_start != outlnum
+ let foldinfo = [ mode_type, mode_start, outlnum-1,
+ \ printf('[ %d-line signature. Press "s" to show. ]', outlnum - mode_start) ]
+ endif
+ let mode_type = ''
+ endif
+ endif
+ endif
+
+ if part_end
+ " FIXME: this is a hack for handling two folds being added for one line
+ " we should handle addinga fold in a function
+ if len(foldinfo)
+ call add(info['folds'], foldinfo[0:2])
+ let info['foldtext'][foldinfo[1]] = foldinfo[3]
+ endif
+
+ let foldinfo = [ 'text', part_start, part_end,
+ \ printf('[ %d-line %s. Press "p" to show. ]', part_end - part_start, in_part) ]
+ let in_part = ''
+ call add(info['disp'], '')
+ endif
+
+ elseif in_body
+ if !has_key(msg,'body_start')
+ let msg['body_start'] = len(info['disp']) + 1
+ endif
+ if match(line, g:notmuch_show_body_end_regexp) != -1
+ let body_end = len(info['disp'])
+ let foldinfo = [ 'bdy', body_start, body_end,
+ \ printf('[ BODY %d - %d lines ]', len(info['msgs']), body_end - body_start) ]
+
+ let in_body = 0
+
+ elseif match(line, g:notmuch_show_part_begin_regexp) != -1
+ let m = matchlist(line, 'ID: \(\d\+\), Content-type: \(\S\+\)')
+ let in_part = 'unknown'
+ if len(m)
+ let in_part = m[2]
+ endif
+ call add(info['disp'],
+ \ printf('--- %s ---', in_part))
+ let part_start = len(info['disp']) + 1
+ endif
+
+ elseif in_header
+ if in_header == 1
+ let msg['descr'] = line
+ call add(info['disp'], line)
+ let in_header = 2
+ let msg['hdr_start'] = len(info['disp']) + 1
+
+ else
+ if match(line, g:notmuch_show_header_end_regexp) != -1
+ let hdr_start = msg['hdr_start']+1
+ let hdr_end = len(info['disp'])
+ let foldinfo = [ 'hdr', hdr_start, hdr_end,
+ \ printf('[ %d-line headers. Press "h" to show. ]', hdr_end + 1 - hdr_start) ]
+ let msg['header'] = hdr
+ let in_header = 0
+ let hdr = {}
+ else
+ let m = matchlist(line, '^\(\w\+\):\s*\(.*\)$')
+ if len(m)
+ let hdr[m[1]] = m[2]
+ if match(g:notmuch_show_headers, m[1]) != -1
+ call add(info['disp'], line)
+ endif
+ endif
+ endif
+ endif
+
+ elseif in_message
+ if match(line, g:notmuch_show_message_end_regexp) != -1
+ let msg['end'] = len(info['disp'])
+ call add(info['disp'], '')
+
+ let foldinfo = [ 'msg', msg['start'], msg['end'],
+ \ printf('[ MSG %d - %s ]', len(info['msgs']), msg['descr']) ]
+
+ call add(info['msgs'], msg)
+ let msg = {}
+ let in_message = 0
+ let in_header = 0
+ let in_body = 0
+ let in_part = ''
+
+ elseif match(line, g:notmuch_show_header_begin_regexp) != -1
+ let in_header = 1
+ continue
+
+ elseif match(line, g:notmuch_show_body_begin_regexp) != -1
+ let body_start = len(info['disp']) + 1
+ let in_body = 1
+ continue
+ endif
+
+ else
+ if match(line, g:notmuch_show_message_begin_regexp) != -1
+ let msg['start'] = len(info['disp']) + 1
+
+ let m = matchlist(line, g:notmuch_show_message_parse_regexp)
+ if len(m)
+ let msg['id'] = m[1]
+ let msg['depth'] = m[2]
+ let msg['filename'] = m[3]
+ endif
+
+ let in_message = 1
+ endif
+ endif
+
+ if len(foldinfo)
+ call add(info['folds'], foldinfo[0:2])
+ let info['foldtext'][foldinfo[1]] = foldinfo[3]
+ endif
+ endfor
+ return info
+endfunction
+
+function! s:NM_cmd_show_mkfolds()
+ let info = b:nm_raw_info
+
+ for afold in info['folds']
+ exec printf('%d,%dfold', afold[1], afold[2])
+ if (afold[0] == 'sig' && g:notmuch_show_fold_signatures)
+ \ || (afold[0] == 'cit' && g:notmuch_show_fold_citations)
+ \ || (afold[0] == 'bdy' && g:notmuch_show_fold_bodies)
+ \ || (afold[0] == 'hdr' && g:notmuch_show_fold_headers)
+ exec printf('%dfoldclose', afold[1])
+ else
+ exec printf('%dfoldopen', afold[1])
+ endif
+ endfor
+endfunction
+
+function! s:NM_cmd_show_mksyntax()
+ let info = b:nm_raw_info
+ let cnt = 0
+ for msg in info['msgs']
+ let cnt = cnt + 1
+ let start = msg['start']
+ let hdr_start = msg['hdr_start']
+ let body_start = msg['body_start']
+ let end = msg['end']
+ exec printf('syntax region nmShowMsg%dDesc start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgDesc', cnt, start, start+1)
+ exec printf('syntax region nmShowMsg%dHead start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgHead', cnt, hdr_start, body_start)
+ exec printf('syntax region nmShowMsg%dBody start=''\%%%dl'' end=''\%%%dl'' contains=@nmShowMsgBody', cnt, body_start, end)
+ endfor
+endfunction
+
+function! NM_cmd_show_foldtext()
+ let foldtext = b:nm_raw_info['foldtext']
+ return foldtext[v:foldstart]
+endfunction
+
+
+" --- notmuch helper functions {{{1
+
+function! s:NM_newBuffer(type, content)