]> git.notmuchmail.org Git - notmuch/blobdiff - vim/plugin/notmuch.vim
Fix typo in message
[notmuch] / vim / plugin / notmuch.vim
index e41daed162a6981759b1b1425fcff9b14a6bc78d..a9754f2b4b2e94de332931806260323ff674bfaa 100644 (file)
@@ -33,17 +33,17 @@ let s:notmuch_defaults = {
         \ 'g:notmuch_show_fold_bodies':              0                            ,
         \ 'g:notmuch_show_fold_headers':             1                            ,
         \
-        \ 'g:notmuch_show_message_begin_regexp':     '^\fmessage{'                ,
-        \ 'g:notmuch_show_message_end_regexp':       '^\fmessage}'                ,
-        \ 'g:notmuch_show_header_begin_regexp':      '^\fheader{'                 ,
-        \ 'g:notmuch_show_header_end_regexp':        '^\fheader}'                 ,
-        \ 'g:notmuch_show_body_begin_regexp':        '^\fbody{'                   ,
-        \ 'g:notmuch_show_body_end_regexp':          '^\fbody}'                   ,
-        \ 'g:notmuch_show_attachment_begin_regexp':  '^\fattachment{'             ,
-        \ 'g:notmuch_show_attachment_end_regexp':    '^\fattachment}'             ,
-        \ 'g:notmuch_show_part_begin_regexp':        '^\fpart{'                   ,
-        \ 'g:notmuch_show_part_end_regexp':          '^\fpart}'                   ,
-        \ 'g:notmuch_show_marker_regexp':            '^\f\\(message\\|header\\|body\\|attachment\\|part\\)[{}].*$',
+        \ 'g:notmuch_show_message_begin_regexp':     '\fmessage{'                ,
+        \ 'g:notmuch_show_message_end_regexp':       '\fmessage}'                ,
+        \ 'g:notmuch_show_header_begin_regexp':      '\fheader{'                 ,
+        \ 'g:notmuch_show_header_end_regexp':        '\fheader}'                 ,
+        \ 'g:notmuch_show_body_begin_regexp':        '\fbody{'                   ,
+        \ 'g:notmuch_show_body_end_regexp':          '\fbody}'                   ,
+        \ 'g:notmuch_show_attachment_begin_regexp':  '\fattachment{'             ,
+        \ 'g:notmuch_show_attachment_end_regexp':    '\fattachment}'             ,
+        \ 'g:notmuch_show_part_begin_regexp':        '\fpart{'                   ,
+        \ 'g:notmuch_show_part_end_regexp':          '\fpart}'                   ,
+        \ 'g:notmuch_show_marker_regexp':            '\f\\(message\\|header\\|body\\|attachment\\|part\\)[{}].*$',
         \
         \ 'g:notmuch_show_message_parse_regexp':     '\(id:[^ ]*\) depth:\([0-9]*\) match:\([0-9]*\) filename:\(.*\)$',
         \ 'g:notmuch_show_tags_regexp':              '(\([^)]*\))$'               ,
@@ -52,6 +52,10 @@ let s:notmuch_defaults = {
         \ 'g:notmuch_show_signature_lines_max':      12                           ,
         \
         \ 'g:notmuch_show_citation_regexp':          '^\s*>'                      ,
+        \
+        \ 'g:notmuch_compose_insert_mode_start':     1                            ,
+        \ 'g:notmuch_compose_header_help':           1                            ,
+        \ 'g:notmuch_compose_temp_file_dir':         '~/.notmuch/compose/'        ,
         \ }
 
 " defaults for g:notmuch_initial_search_words
@@ -78,11 +82,30 @@ let s:notmuch_folders_defaults = [
         \ [ 'unread', 'tag:unread'               ],
         \ ]
 
+" defaults for g:notmuch_signature
+" override with: let g:notmuch_signature = [ ... ]
+let s:notmuch_signature_defaults = [
+        \ '',
+        \ '-- ',
+        \ 'email sent from notmuch.vim plugin'
+        \ ]
+
+" defaults for g:notmuch_compose_headers
+" override with: let g:notmuch_compose_headers = [ ... ]
+let s:notmuch_compose_headers_defaults = [
+        \ 'From',
+        \ 'To',
+        \ 'Cc',
+        \ 'Bcc',
+        \ 'Subject'
+        \ ]
+
 " --- keyboard mapping definitions {{{1
 
 " --- --- bindings for folders mode {{{2
 
 let g:notmuch_folders_maps = {
+        \ 'm':          ':call <SID>NM_new_mail()<CR>',
         \ 's':          ':call <SID>NM_search_prompt()<CR>',
         \ 'q':          ':call <SID>NM_kill_this_buffer()<CR>',
         \ '=':          ':call <SID>NM_folders_refresh_view()<CR>',
@@ -91,7 +114,8 @@ let g:notmuch_folders_maps = {
 
 " --- --- bindings for search screen {{{2
 let g:notmuch_search_maps = {
-        \ '<Enter>':    ':call <SID>NM_search_show_thread()<CR>',
+        \ '<Space>':    ':call <SID>NM_search_show_thread(0)<CR>',
+        \ '<Enter>':    ':call <SID>NM_search_show_thread(1)<CR>',
         \ '<C-]>':      ':call <SID>NM_search_expand(''<cword>'')<CR>',
         \ 'a':          ':call <SID>NM_search_archive_thread()<CR>',
         \ 'f':          ':call <SID>NM_search_filter()<CR>',
@@ -105,7 +129,7 @@ let g:notmuch_search_maps = {
         \ '+':          ':call <SID>NM_search_add_tags([])<CR>',
         \ '-':          ':call <SID>NM_search_remove_tags([])<CR>',
         \ '=':          ':call <SID>NM_search_refresh_view()<CR>',
-        \ '?':          ':echo <SID>NM_search_thread_id()<CR>',
+        \ '?':          ':echo <SID>NM_search_thread_id() . ''  @ '' . join(<SID>NM_get_search_words())<CR>',
         \ }
 
 " --- --- bindings for show screen {{{2
@@ -114,11 +138,12 @@ let g:notmuch_show_maps = {
         \ '<C-N>':      ':call <SID>NM_show_next(1, 0)<CR>',
         \ '<C-]>':      ':call <SID>NM_search_expand(''<cword>'')<CR>',
         \ 'q':          ':call <SID>NM_kill_this_buffer()<CR>',
+        \ 's':          ':call <SID>NM_search_prompt()<CR>',
         \
         \ 'b':          ':call <SID>NM_show_fold_toggle(''b'', ''bdy'', !g:notmuch_show_fold_bodies)<CR>',
         \ 'c':          ':call <SID>NM_show_fold_toggle(''c'', ''cit'', !g:notmuch_show_fold_citations)<CR>',
         \ 'h':          ':call <SID>NM_show_fold_toggle(''h'', ''hdr'', !g:notmuch_show_fold_headers)<CR>',
-        \ 's':          ':call <SID>NM_show_fold_toggle(''s'', ''sig'', !g:notmuch_show_fold_signatures)<CR>',
+        \ 'i':          ':call <SID>NM_show_fold_toggle(''s'', ''sig'', !g:notmuch_show_fold_signatures)<CR>',
         \
         \ 'a':          ':call <SID>NM_show_archive_thread()<CR>',
         \ 'A':          ':call <SID>NM_show_mark_read_then_archive_thread()<CR>',
@@ -135,15 +160,25 @@ let g:notmuch_show_maps = {
         \
         \ 'r':          ':call <SID>NM_show_reply()<CR>',
         \ 'm':          ':call <SID>NM_new_mail()<CR>',
-        \ '?':          ':echo <SID>NM_show_message_id() . ''  @ '' . join(<SID>NM_show_search_words())<CR>',
+        \ '?':          ':echo <SID>NM_show_message_id() . ''  @ '' . join(<SID>NM_get_search_words())<CR>',
         \ }
 
+" --- --- bindings for compose screen {{{2
+let g:notmuch_compose_nmaps = {
+        \ ',s':         ':call <SID>NM_compose_send()<CR>',
+        \ ',a':         ':call <SID>NM_compose_attach()<CR>',
+        \ ',q':         ':call <SID>NM_kill_this_buffer()<CR>',
+        \ '<Tab>':      ':call <SID>NM_compose_next_entry_area()<CR>',
+        \ }
+let g:notmuch_compose_imaps = {
+        \ '<Tab>':      '<C-r>=<SID>NM_compose_next_entry_area()<CR>',
+        \ }
 
 " --- implement folders screen {{{1
 
 function! s:NM_cmd_folders(words)
         if len(a:words)
-                echoe 'Not exapecting any arguments for folders command.'
+                throw 'Not expecting any arguments for folders command.'
         endif
         let cmd = ['count']
         let disp = []
@@ -156,12 +191,12 @@ function! s:NM_cmd_folders(words)
                 call add(searches, search)
         endfor
 
-        call <SID>NM_newBuffer('folders', join(disp, "\n"))
+        call <SID>NM_newBuffer('', 'folders', join(disp, "\n"))
         let b:nm_searches = searches
         let b:nm_timestamp = reltime()
 
         call <SID>NM_cmd_folders_mksyntax()
-        call <SID>NM_set_map(g:notmuch_folders_maps)
+        call <SID>NM_set_map('n', g:notmuch_folders_maps)
         setlocal cursorline
         setlocal nowrap
 endfunction
@@ -204,12 +239,12 @@ function! s:NM_cmd_search(words)
         let disp = copy(lines)
         call map(disp, 's:NM_cmd_search_fmtline(v:val)')
 
-        call <SID>NM_newBuffer('search', join(disp, "\n"))
+        call <SID>NM_newBuffer('', 'search', join(disp, "\n"))
         let b:nm_raw_lines = lines
         let b:nm_search_words = a:words
 
         call <SID>NM_cmd_search_mksyntax()
-        call <SID>NM_set_map(g:notmuch_search_maps)
+        call <SID>NM_set_map('n', g:notmuch_search_maps)
         setlocal cursorline
         setlocal nowrap
 endfunction
@@ -232,17 +267,15 @@ endfunction
 
 " --- --- search screen action functions {{{2
 
-function! s:NM_search_show_thread()
-        let id = <SID>NM_search_thread_id()
-        if id != ''
-                let words = [id]
-                if exists('b:nm_search_words')
-                        let words = ['('] + b:nm_search_words + [')', 'and', id]
-                endif
-                if len(words)
-                        call <SID>NM_cmd_show(words)
-                endif
+function! s:NM_search_show_thread(everything)
+        let words = [ <SID>NM_search_thread_id() ]
+        if !a:everything && exists('b:nm_search_words')
+                call extend(words, ['AND', '('])
+                call extend(words, b:nm_search_words)
+                call add(words, ')')
         endif
+        call <SID>NM_cmd_show(words)
+        let b:nm_show_everything = a:everything
 endfunction
 
 function! s:NM_search_prompt()
@@ -291,23 +324,13 @@ endfunction
 
 function! s:NM_search_filter_helper(prompt, prefix, joiner)
         " TODO: input() can support completion
-        let text = input(a:prompt)
+        let text = substitute(input(a:prompt), '\v(^\s*|\s*$|\n)', '', 'g')
         if !strlen(text)
                 return
         endif
 
-        let tags = split(text)
-        if strlen(a:prefix)
-                call map(tags, 'a:prefix . v:val')
-        endif
-        if strlen(a:joiner)
-                let idx = len(tags) - 1
-                while idx > 0
-                        call insert(tags, a:joiner, idx)
-                        let idx = idx - 1
-                endwhile
-        endif
-        let tags = b:nm_search_words + ['and', '('] + tags + [')']
+        let tags = b:nm_search_words + ['AND']
+                 \ + <SID>NM_combine_tags(a:prefix, split(text), a:joiner, '()')
 
         let prev_bufnr = bufnr('%')
         setlocal bufhidden=hide
@@ -324,7 +347,14 @@ function! s:NM_search_toggle_order()
 endfunction
 
 function! s:NM_search_reply_to_thread()
-        echo 'not implemented'
+        let cmd = ['reply']
+        call add(cmd, <SID>NM_search_thread_id())
+        call add(cmd, 'AND')
+        call extend(cmd, <SID>NM_get_search_words())
+
+        let data = <SID>NM_run(cmd)
+        let lines = split(data, "\n")
+        call <SID>NM_newComposeBuffer(lines, 0)
 endfunction
 
 function! s:NM_search_add_tags(tags)
@@ -349,14 +379,12 @@ endfunction
 
 function! s:NM_search_thread_id()
         if !exists('b:nm_raw_lines')
-                echoe 'no b:nm_raw_lines'
-                return ''
+                throw 'Eeek! no b:nm_raw_lines'
         endif
         let mnum = line('.') - 1
         if len(b:nm_raw_lines) <= mnum
                 return ''
         endif
-        echo 'len=' . string(len(b:nm_raw_lines)) . '  mnum=' . string(mnum)
         let info = b:nm_raw_lines[mnum]
         let what = split(info, '\s\+')[0]
         return what
@@ -381,21 +409,21 @@ endfunction
 
 function! s:NM_cmd_show(words)
         let prev_bufnr = bufnr('%')
-        let data = s:NM_run(['show'] + a:words)
+        let data = s:NM_run(['show', '--entire-thread'] + a:words)
         let lines = split(data, "\n")
 
         let info = s:NM_cmd_show_parse(lines)
 
         setlocal bufhidden=hide
-        call <SID>NM_newBuffer('show', join(info['disp'], "\n"))
+        call <SID>NM_newBuffer('', 'show', join(info['disp'], "\n"))
         setlocal bufhidden=delete
-        let b:nm_words = a:words
+        let b:nm_search_words = a:words
         let b:nm_raw_info = info
         let b:nm_prev_bufnr = prev_bufnr
 
         call <SID>NM_cmd_show_mkfolds()
         call <SID>NM_cmd_show_mksyntax()
-        call <SID>NM_set_map(g:notmuch_show_maps)
+        call <SID>NM_set_map('n', g:notmuch_show_maps)
         setlocal foldtext=NM_cmd_show_foldtext()
         setlocal fillchars=
         setlocal foldcolumn=6
@@ -403,6 +431,7 @@ function! s:NM_cmd_show(words)
 endfunction
 
 function! s:NM_show_previous(can_change_thread, find_matching)
+        let everything = exists('b:nm_show_everything') ? b:nm_show_everything : 0
         let info = b:nm_raw_info
         let lnum = line('.')
         for msg in reverse(copy(info['msgs']))
@@ -423,7 +452,7 @@ function! s:NM_show_previous(can_change_thread, find_matching)
         call <SID>NM_kill_this_buffer()
         if line('.') > 1
                 norm k
-                call <SID>NM_search_show_thread()
+                call <SID>NM_search_show_thread(everything)
                 norm G
                 call <SID>NM_show_previous(0, a:find_matching)
         else
@@ -452,10 +481,11 @@ function! s:NM_show_next(can_change_thread, find_matching)
 endfunction
 
 function! s:NM_show_next_thread()
+        let everything = exists('b:nm_show_everything') ? b:nm_show_everything : 0
         call <SID>NM_kill_this_buffer()
         if line('.') != line('$')
                 norm j
-                call <SID>NM_search_show_thread()
+                call <SID>NM_search_show_thread(everything)
         else
                 echo 'No more messages.'
         endif
@@ -478,7 +508,14 @@ function! s:NM_show_previous_message()
 endfunction
 
 function! s:NM_show_reply()
-        echo 'not implemented'
+        let cmd = ['reply']
+        call add(cmd, <SID>NM_show_message_id())
+        call add(cmd, 'AND')
+        call extend(cmd, <SID>NM_get_search_words())
+
+        let data = <SID>NM_run(cmd)
+        let lines = split(data, "\n")
+        call <SID>NM_newComposeBuffer(lines, 0)
 endfunction
 
 function! s:NM_show_view_all_mime_parts()
@@ -508,7 +545,7 @@ function! s:NM_show_advance_marking_read_and_archiving()
 
         let msg_top = <SID>NM_show_get_message_for_line(vis_top)
         if !has_key(msg_top,'id')
-                echo "No top visible message."
+                throw "No top visible message."
         endif
 
         " if the top message is the last message, just expunge the entire thread and move on
@@ -516,14 +553,12 @@ function! s:NM_show_advance_marking_read_and_archiving()
                 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 + [')']
+                let filter = <SID>NM_combine_tags('tag:', advance_tags, 'OR', '()')
+                         \ + ['AND']
+                         \ + <SID>NM_combine_tags('', ids, 'OR', '()')
                 call <SID>NM_add_remove_tags(filter, '-', advance_tags)
                 call <SID>NM_show_next(1, 1)
                 return
@@ -531,7 +566,7 @@ function! s:NM_show_advance_marking_read_and_archiving()
 
         let msg_bot = <SID>NM_show_get_message_for_line(vis_bot)
         if !has_key(msg_bot,'id')
-                echo "No bottom visible message."
+                throw "No bottom visible message."
         endif
 
         " if entire message fits on the screen, read/archive it, move to the next one
@@ -542,7 +577,8 @@ function! s:NM_show_advance_marking_read_and_archiving()
                 if has_key(msg_top,'match') && msg_top['match'] != '0'
                         redraw
                         " do this last to hide the latency
-                        let filter = ['('] + advance_tags + [')', 'AND', msg_top['id']]
+                        let filter = <SID>NM_combine_tags('tag:', advance_tags, 'OR', '()')
+                                 \ + ['AND', msg_top['id']]
                         call <SID>NM_add_remove_tags(filter, '-', advance_tags)
                 endif
                 return
@@ -589,8 +625,7 @@ endfunction
 
 function! s:NM_show_message_id()
         if !exists('b:nm_raw_info')
-                echoe 'no b:nm_raw_info'
-                return ''
+                throw 'Eeek! no b:nm_raw_info'
         endif
         let msg = <SID>NM_show_get_message_for_line(line('.'))
         if has_key(msg,'id')
@@ -599,14 +634,6 @@ function! s:NM_show_message_id()
         return ''
 endfunction
 
-function! s:NM_show_search_words()
-        if !exists('b:nm_words')
-                echoe 'no b:nm_words'
-                return []
-        endif
-        return b:nm_words
-endfunction
-
 function! s:NM_show_fold_toggle(key, type, fold)
         let info = b:nm_raw_info
         let act = 'open'
@@ -614,9 +641,19 @@ function! s:NM_show_fold_toggle(key, type, fold)
                 let act = 'close'
         endif
         for fld in info['folds']
-                if fld[0] == a:type
-                        exec printf('%dfold%s', fld[1], act)
+                if fld[0] != a:type
+                        continue
+                endif
+                "let idx = fld[3]
+                "let msg = info['msgs'][idx]
+                "if has_key(msg,'match') && msg['match'] == '0'
+                "        continue
+                "endif
+                let cls = foldclosed(fld[1])
+                if cls != -1 && cls != fld[1]
+                        continue
                 endif
+                exec printf('%dfold%s', fld[1], act)
         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
@@ -843,26 +880,357 @@ function! NM_cmd_show_foldtext()
 endfunction
 
 
+" --- implement compose screen {{{1
+
+function! s:NM_cmd_compose(words, body_lines)
+        let lines = []
+        let start_on_line = 0
+
+        let hdrs = { }
+        for word in a:words
+                let m = matchlist(word, '^\(\w[^:]*\):\s*\(.*\)\s*$')
+                if !len(m)
+                        throw 'Eeek! bad parameter ''' . string(word) . ''''
+                endif
+                let key = substitute(m[1], '\<\w', '\U&', 'g')
+                if !has_key(hdrs, key)
+                        let hdrs[key] = []
+                endif
+                if strlen(m[2])
+                        call add(hdrs[key], m[2])
+                endif
+        endfor
+
+        if !has_key(hdrs, 'From') || !len(hdrs['From'])
+                let me = <SID>NM_compose_get_user_email()
+                let hdrs['From'] = [ me ]
+        endif
+
+        for key in g:notmuch_compose_headers
+                let text = has_key(hdrs, key) ? join(hdrs[key], ', ') : ''
+                call add(lines, key . ': ' . text)
+                if !start_on_line && !strlen(text)
+                        let start_on_line = len(lines)
+                endif
+        endfor
+
+        for [key,val] in items(hdrs)
+                if match(g:notmuch_compose_headers, key) == -1
+                        let line = key . ': ' . join(val, ', ')
+                        call add(lines, line)
+                endif
+        endfor
+
+        call add(lines, '')
+        if !start_on_line
+                let start_on_line = len(lines) + 1
+        endif
+
+        if len(a:body_lines)
+                call extend(lines, a:body_lines)
+        else
+                call extend(lines, [ '', '' ])
+        endif
+
+        call <SID>NM_newComposeBuffer(lines, start_on_line)
+endfunction
+
+function! s:NM_compose_send()
+        call <SID>NM_assert_buffer_type('compose')
+        let fname = expand('%')
+        let lnum = 1
+        let line = getline(lnum)
+        let hdrs = {}
+        let lst_hdr = ''
+        while match(line, '^$') == -1
+                if match(line, '^Notmuch-Help:') != -1
+                        " skip it
+                elseif strlen(lst_hdr) && match(line, '^\s') != -1
+                        let hdrs[lst_hdr][-1] = hdrs[lst_hdr][-1] . substitute(line, '^\s*', ' ', '')
+                else
+                        let m = matchlist(line, '^\(\w[^:]*\):\s*\(.*\)\s*$')
+                        if !len(m)
+                                cursor(lnum, 0)
+                                throw printf('Eeek! invalid header on line %d', lnum)
+                        endif
+                        let key = substitute(m[1], '\<\w', '\U&', 'g')
+                        if strlen(m[2])
+                                if !has_key(hdrs, key)
+                                        let hdrs[key] = []
+                                endif
+                                call add(hdrs[key], m[2])
+                        endif
+                        let lst_hdr = key
+                endif
+                let lnum = lnum + 1
+                let line = getline(lnum)
+        endwhile
+        let body_starts = lnum
+
+        "[-a header] [-b bcc-addr] [-c cc-addr] [-s subject] to-addr
+        let cmd = ['mail']
+        let tos = []
+        for [key, vals] in items(hdrs)
+                if key == 'To'
+                        call extend(tos, vals)
+                elseif key == 'Bcc'
+                        for adr in vals
+                                call add(cmd, '-b')
+                                call add(cmd, adr)
+                        endfor
+                elseif key == 'Cc'
+                        for adr in vals
+                                call add(cmd, '-c')
+                                call add(cmd, adr)
+                        endfor
+                elseif key == 'Subject'
+                        for txt in vals
+                                call add(cmd, '-s')
+                                call add(cmd, txt)
+                        endfor
+                else
+                        for val in vals
+                                call add(cmd, '-a')
+                                call add(cmd, key . ': ' . val)
+                        endfor
+                endif
+        endfor
+        call extend(cmd, tos)
+
+        " TODO: make sure we have at least one target
+        " TODO: ask about empty jubject, etc
+
+        exec printf('0,%dd', body_starts)
+        write
+
+        call map(cmd, 's:NM_shell_escape(v:val)')
+        let cmdtxt = join(cmd) . '< ' . fname
+        let out = system(cmdtxt)
+        let err = v:shell_error
+        if err
+                undo
+                write
+                call <SID>NM_newBuffer('new', 'error',
+                            \ "While running...\n" .
+                            \ '  ' . cmdtxt . "\n" .
+                            \ "\n" .
+                            \ "Failed with...\n" .
+                            \ substitute(out, '^', '  ', 'g'))
+                echohl Error
+                echo 'Eeek! unable to send mail'
+                echohl None
+                return
+        endif
+
+        if !exists('b:nm_prev_bufnr')
+                bdelete
+        else
+                let prev_bufnr = b:nm_prev_bufnr
+                bdelete
+                if prev_bufnr == bufnr('%')
+                        exec printf("buffer %d", prev_bufnr)
+                endif
+        endif
+        call delete(fname)
+        echo 'Mail sent successfully.'
+endfunction
+
+function! s:NM_compose_attach()
+        echo 'not implemented'
+endfunction
+
+function! s:NM_compose_next_entry_area()
+        let lnum = line('.')
+        let hdr_end = <SID>NM_compose_find_line_match(1,'^$',1)
+        if lnum < hdr_end
+                let lnum = lnum + 1
+                let line = getline(lnum)
+                if match(line, '^\([^:]\+\):\s*$') == -1
+                        call cursor(lnum, strlen(line) + 1)
+                        return ''
+                endif
+                while match(getline(lnum+1), '^\s') != -1
+                        let lnum = lnum + 1
+                endwhile
+                call cursor(lnum, strlen(getline(lnum)) + 1)
+                return ''
+
+        elseif lnum == hdr_end
+                call cursor(lnum+1, strlen(getline(lnum+1)) + 1)
+                return ''
+        endif
+        if mode() == 'i'
+                if !getbufvar(bufnr('.'), '&et')
+                        return "\t"
+                endif
+               let space = ''
+               let shiftwidth = a:shiftwidth
+               let shiftwidth = shiftwidth - ((virtcol('.')-1) % shiftwidth)
+                " we assume no one has shiftwidth set to more than 40 :)
+                return '                                        '[0:shiftwidth]
+        endif
+endfunction
+
+" --- --- compose screen helper functions {{{2
+
+function! s:NM_compose_get_user_email()
+        let name = substitute(system('id -u -n'), '\v(^\s*|\s*$|\n)', '', 'g')
+        let fqdn = substitute(system('hostname -f'), '\v(^\s*|\s*$|\n)', '', 'g')
+
+        " TODO: do this properly
+        return name . '@' . fqdn
+endfunction
+
+function! s:NM_compose_find_line_match(start, pattern, failure)
+        let lnum = a:start
+        let lend = line('$')
+        while lnum < lend
+                if match(getline(lnum), a:pattern) != -1
+                        return lnum
+                endif
+                let lnum = lnum + 1
+        endwhile
+        return a:failure
+endfunction
+
+
 " --- notmuch helper functions {{{1
 
-function! s:NM_newBuffer(type, content)
-        enew
-        setlocal buftype=nofile readonly modifiable
+function! s:NM_newBuffer(how, type, content)
+        if strlen(a:how)
+                exec a:how
+        else
+                enew
+        endif
+        setlocal buftype=nofile readonly modifiable scrolloff=0 sidescrolloff=0
         silent put=a:content
         keepjumps 0d
         setlocal nomodifiable
-        set scrolloff=0
-        set sidescrolloff=0
         execute printf('set filetype=notmuch-%s', a:type)
         execute printf('set syntax=notmuch-%s', a:type)
         let b:nm_type = a:type
 endfunction
 
+function! s:NM_newFileBuffer(fdir, fname, type, lines)
+        let fdir = expand(a:fdir)
+        if !isdirectory(fdir)
+                call mkdir(fdir, 'p')
+        endif
+        let file_name = <SID>NM_mktemp(fdir, a:fname)
+        if writefile(a:lines, file_name)
+                throw 'Eeek! couldn''t write to temporary file ' . file_name
+        endif
+        exec printf('edit %s', file_name)
+        setlocal buftype= noreadonly modifiable scrolloff=0 sidescrolloff=0
+        execute printf('set filetype=notmuch-%s', a:type)
+        execute printf('set syntax=notmuch-%s', a:type)
+        let b:nm_type = a:type
+endfunction
+
+function! s:NM_newComposeBuffer(lines, start_on_line)
+        let lines = a:lines
+        let start_on_line = a:start_on_line
+        let real_hdr_start = 1
+        if g:notmuch_compose_header_help
+                let help_lines = [
+                  \ 'Notmuch-Help: Type in your message here; to help you use these bindings:',
+                  \ 'Notmuch-Help:   ,a    - attach a file',
+                  \ 'Notmuch-Help:   ,s    - send the message (Notmuch-Help lines will be removed)',
+                  \ 'Notmuch-Help:   ,q    - abort the message',
+                  \ 'Notmuch-Help:   <Tab> - skip through header lines',
+                  \ ]
+                call extend(lines, help_lines, 0)
+                let real_hdr_start = len(help_lines)
+                if start_on_line > 0
+                        let start_on_line = start_on_line + len(help_lines)
+                endif
+        endif
+        call extend(lines, g:notmuch_signature)
+
+
+        let prev_bufnr = bufnr('%')
+        setlocal bufhidden=hide
+        call <SID>NM_newFileBuffer(g:notmuch_compose_temp_file_dir, '%s.mail',
+                                  \ 'compose', lines)
+        setlocal bufhidden=hide
+        let b:nm_prev_bufnr = prev_bufnr
+
+        call <SID>NM_set_map('n', g:notmuch_compose_nmaps)
+        call <SID>NM_set_map('i', g:notmuch_compose_imaps)
+
+        if start_on_line > 0 && start_on_line <= len(lines)
+                call cursor(start_on_line, strlen(getline(start_on_line)) + 1)
+        else
+                call cursor(real_hdr_start, strlen(getline(real_hdr_start)) + 1)
+                call <SID>NM_compose_next_entry_area()
+        endif
+
+        if g:notmuch_compose_insert_mode_start
+                startinsert!
+        endif
+        echo 'Type your message, use <TAB> to jump to next header and then body.'
+endfunction
+
+function! s:NM_assert_buffer_type(type)
+        if !exists('b:nm_type') || b:nm_type != a:type
+                throw printf('Eeek! expected type %s, but got %s.', a:type,
+                            \ exists(b:nm_type) ? b:nm_type : 'something else')
+        endif
+endfunction
+
+function! s:NM_mktemp(dir, name)
+        let time_stamp = strftime('%Y%m%d-%H%M%S')
+        let file_name = substitute(a:dir,'/*$','/','') . printf(a:name, time_stamp)
+        " TODO: check if it exists, try again
+        return file_name
+endfunction
+
 function! s:NM_shell_escape(word)
+        " TODO: use shellescape()
         let word = substitute(a:word, '''', '\\''', 'g')
         return '''' . word . ''''
 endfunction
 
+" this function was taken from git.vim, then fixed up
+" http://github.com/motemen/git-vim
+function! s:NM_shell_split(cmd)
+        let l:split_cmd = []
+        let cmd = a:cmd
+        let iStart = 0
+        while 1
+                let t = match(cmd, '\S', iStart)
+                if t < iStart
+                        break
+                endif
+                let iStart = t
+
+                let iSpace = match(cmd, '\v(\s|$)', iStart)
+                if iSpace < iStart
+                        break
+                endif
+
+                let iQuote1 = match(cmd, '\(^["'']\|[^\\]\@<=["'']\)', iStart)
+                if iQuote1 > iSpace || iQuote1 < iStart
+                        let iEnd = iSpace - 1
+                        let l:split_cmd += [ cmd[iStart : iEnd] ]
+                else
+                        let q = cmd[iQuote1]
+                        let iQuote2 = match(cmd, '[^\\]\@<=[' . q . ']', iQuote1 + 1)
+                        if iQuote2 < iQuote1
+                                throw 'No matching ' . q . ' quote'
+                        endif
+                        let iEnd = iQuote2
+                        let l:split_cmd += [ cmd[iStart+1 : iEnd-1 ] ]
+                endif
+
+
+                let iStart = iEnd + 1
+        endwhile
+
+        return l:split_cmd
+endfunction
+
+
 function! s:NM_run(args)
         let words = a:args
         call map(words, 's:NM_shell_escape(v:val)')
@@ -890,15 +1258,47 @@ endfunction
 " --- external mail handling helpers {{{1
 
 function! s:NM_new_mail()
-        echo 'not implemented'
+        call <SID>NM_cmd_compose([], [])
+endfunction
+
+" --- tag manipulation helpers {{{1
+
+" used to combine an array of words with prefixes and separators
+" example:
+"     NM_combine_tags('tag:', ['one', 'two', 'three'], 'OR', '()')
+"  -> ['(', 'tag:one', 'OR', 'tag:two', 'OR', 'tag:three', ')']
+function! s:NM_combine_tags(word_prefix, words, separator, brackets)
+        let res = []
+        for word in a:words
+                if len(res) && strlen(a:separator)
+                        call add(res, a:separator)
+                endif
+                call add(res, a:word_prefix . word)
+        endfor
+        if len(res) > 1 && strlen(a:brackets)
+                if strlen(a:brackets) != 2
+                        throw 'Eeek! brackets arg to NM_combine_tags must be 2 chars'
+                endif
+                call insert(res, a:brackets[0])
+                call add(res, a:brackets[1])
+        endif
+        return res
 endfunction
 
 " --- other helpers {{{1
 
+function! s:NM_get_search_words()
+        if !exists('b:nm_search_words')
+                throw 'Eeek! no b:nm_search_words'
+        endif
+        return b:nm_search_words
+endfunction
+
 function! s:NM_kill_this_buffer()
         if exists('b:nm_prev_bufnr')
-                setlocal bufhidden=delete
-                exec printf(":buffer %d", b:nm_prev_bufnr)
+                let prev_bufnr = b:nm_prev_bufnr
+                bdelete!
+                exec printf("buffer %d", prev_bufnr)
         else
                 echo "This is the last buffer; use :q<CR> to quit."
         endif
@@ -916,7 +1316,7 @@ endfunction
 function! s:NM_add_remove_tags(filter, prefix, tags)
         let filter = len(a:filter) ? a:filter : [<SID>NM_search_thread_id()]
         if !len(filter)
-                echoe 'Eeek! I couldn''t find the thead id!'
+                throw 'Eeek! I couldn''t find the thead id!'
         endif
         call map(a:tags, 'a:prefix . v:val')
         let args = ['tag']
@@ -935,7 +1335,7 @@ function! s:NM_add_remove_tags_on_screen(online, prefix, tags)
                 endfor
         else
                 for tagname in a:tags
-                        exec printf('silent! %ss/(\([^)]*\)\([^)]*\))$/(\1 %s)/', string(a:online), tagname)
+                        exec printf('silent! %ss/(\([^)]*\))$/(\1 %s)/', string(a:online), tagname)
                 endfor
         endif
         setlocal nomodifiable
@@ -976,16 +1376,22 @@ if !exists('g:notmuch_folders')
         let g:notmuch_folders = s:notmuch_folders_defaults
 endif
 
+if !exists('g:notmuch_signature')
+        let g:notmuch_signature = s:notmuch_signature_defaults
+endif
+if !exists('g:notmuch_compose_headers')
+        let g:notmuch_compose_headers = s:notmuch_compose_headers_defaults
+endif
 
 " --- assign keymaps {{{1
 
-function! s:NM_set_map(maps)
+function! s:NM_set_map(type, maps)
         nmapclear
         for [key, code] in items(a:maps)
-                exec printf('nnoremap <buffer> %s %s', key, code)
+                exec printf('%snoremap <buffer> %s %s', a:type, key, code)
         endfor
         " --- this is a hack for development :)
-        nnoremap ,nmr :source ~/.vim/plugin/notmuch.vim<CR>:call NotMuch('')<CR>
+        nnoremap ,nmr :runtime! plugin/notmuch.vim<CR>
 endfunction
 
 " --- command handler {{{1
@@ -996,12 +1402,12 @@ function! NotMuch(args)
                 let args = 'folders'
         endif
 
-        let words = split(args)
-        if words[0] == 'folders'
+        let words = <SID>NM_shell_split(args)
+        if words[0] == 'folders' || words[0] == 'f'
                 let words = words[1:]
                 call <SID>NM_cmd_folders(words)
 
-        elseif words[0] == 'search'
+        elseif words[0] == 'search' || words[0] == 's'
                 if len(words) > 1
                         let words = words[1:]
                 elseif exists('b:nm_search_words')
@@ -1013,6 +1419,10 @@ function! NotMuch(args)
 
         elseif words[0] == 'show'
                 echoe 'show is not yet implemented.'
+
+        elseif words[0] == 'new' || words[0] == 'compose'
+                let words = words[1:]
+                call <SID>NM_cmd_compose(words, [])
         endif
 endfunction
 function! CompleteNotMuch(arg_lead, cmd_line, cursor_pos)