diff --git a/README.md b/README.md
index 62165eb..5013cf0 100644
--- a/README.md
+++ b/README.md
@@ -36,17 +36,74 @@ MacVim!
 
 Tmux complete is automatically integrated with the following plugins:
 
-- [neocomplete](https://github.com/Shougo/neocomplete.vim): You can see tmux
-    completions right in your neocomplete pop-up.
+- [asyncomplete](https://github.com/prabirshrestha/asyncomplete.vim)
 
-- [neocomplcache](https://github.com/Shougo/neocomplcache.vim): You can see tmux
-    completions right in your neocomplcache pop-up.
+    To see tmux completions in your asyncomplete pop-up you will need the async
+    plugin as well:
 
-- [deoplete](https://github.com/Shougo/deoplete.nvim): You can see tmux
-    completions right in your deoplete pop-up.
+    ```vim
+    Plug 'prabirshrestha/async.vim'
+    Plug 'prabirshrestha/asyncomplete.vim'
+    Plug 'wellle/tmux-complete.vim'
+    ```
+
+    This integration comes with sensible defaults, but you have some options to
+    fine tune it. To start put a block like this into your vimrc:
+
+    ```vim
+    let g:tmuxcomplete#asyncomplete_source_options = {
+                \ 'name':      'tmuxcomplete',
+                \ 'whitelist': ['*'],
+                \ 'config': {
+                \     'splitmode':      'words',
+                \     'filter_prefix':   1,
+                \     'show_incomplete': 1,
+                \     'sort_candidates': 0,
+                \     'scrollback':      0
+                \     }
+                \ }
+    ```
+
+    With `name` you can change how it appears in the pop-up. `whitelist` makes
+    it possible to enable this integration only for certain filetypes.
+
+    The `splitmode` can be `words`, `lines`, `ilines`, or `linies,words`.
+    `ilines` stands for "inner line", starting with a word character (ignoring
+    special chararcters in front) and `ilines,words` completes both lines and
+    words.
+
+    If `filter_prefix` is enabled, we will filter candidates based on the
+    entered text, this usually gives faster results. For fuzzy matching this
+    should be disabled.
+
+    If there you are using many tmux windows with a lot of text in it,
+    completion can be slow. That's why we start showing candidates as soon as
+    they come in. If you prefer to only see candidates once the list is
+    complete, you can disable this by setting `show_incomplete`.
+
+    `sort_candidates` controls whether we sort candidates from tmux externally.
+    If it's enabled we can't get early incomplete results. If you have
+    `show_incomplete` disabled, this might get slightly quicker results and
+    potentially better sorted completions.
+
+    If `scrollback` is positive we will consider that many lines in each tmux
+    pane's history for completion.
+
+- [neocomplete](https://github.com/Shougo/neocomplete.vim)
+
+    You can see tmux completions right in your neocomplete pop-up.
+
+- [neocomplcache](https://github.com/Shougo/neocomplcache.vim)
 
-- [unite](https://github.com/Shougo/unite.vim): You can use tmux complete
-    as a unite source:
+    You can see tmux completions right in your neocomplcache pop-up.
+
+- [deoplete](https://github.com/Shougo/deoplete.nvim)
+
+    You can see tmux completions right in your deoplete pop-up.
+
+- [unite](https://github.com/Shougo/unite.vim)
+
+    You can use tmux complete as a unite source:
 
     ```vim
     Unite tmuxcomplete       " opens a menu containing words from adjacent tmux windows
@@ -57,22 +114,22 @@ Tmux complete is automatically integrated with the following plugins:
 
 Use your favorite plugin manager.
 
-- [NeoBundle][neobundle]
+- [Vim-plug][vim-plug]
 
     ```vim
-    NeoBundle 'wellle/tmux-complete.vim'
+    Plug 'wellle/tmux-complete.vim'
     ```
 
-- [Vundle][vundle]
+- [NeoBundle][neobundle]
 
     ```vim
-    Bundle 'wellle/tmux-complete.vim'
+    NeoBundle 'wellle/tmux-complete.vim'
     ```
 
-- [Vim-plug][vim-plug]
+- [Vundle][vundle]
 
     ```vim
-    Plug 'wellle/tmux-complete.vim'
+    Bundle 'wellle/tmux-complete.vim'
     ```
 
 - [Pathogen][pathogen]
diff --git a/autoload/asyncomplete/sources/tmuxcomplete.vim b/autoload/asyncomplete/sources/tmuxcomplete.vim
new file mode 100644
index 0000000..4042262
--- /dev/null
+++ b/autoload/asyncomplete/sources/tmuxcomplete.vim
@@ -0,0 +1,113 @@
+let s:defaultopts = {
+            \ 'name':      'tmuxcomplete',
+            \ 'whitelist': ['*'],
+            \ 'completor': function('asyncomplete#sources#tmuxcomplete#completor'),
+            \ }
+
+" 'splitmode' can be 'words', 'lines', 'ilines', or 'linies,words'
+" 'ilines' is inner line, starting with a word character (ignoring special
+" chararcters in front)
+" 'ilines,words' completes both lines and words
+" more combinations can be added per request
+"
+" if 'filter_prefix' is enabled, we will filter candidates based on the entered
+" text, this usually gives faster results. for fuzzy matching this should be
+" disabled
+"
+" if there you are using many tmux windows with a lot of text in it completion
+" can be slow. that's why we start showing candidates as soon as they come in
+" if you prefer to only see candidates once the list is complete, you can
+" disable this by setting 'show_incomplete'
+"
+" 'sort_candidates' controls whether we sort candidates from tmux externally.
+" if it's enabled we can't get early incomplete results. if you have
+" 'show_incomplete' disabled, this might get slightly quicker results and
+" potentially better sorted completions.
+"
+" if 'scrollback' is positive we will consider that many lines in each tmux
+" pane's history for completion
+let s:defaultconfig = {
+            \ 'splitmode':      'words',
+            \ 'filter_prefix':   1,
+            \ 'show_incomplete': 1,
+            \ 'sort_candidates': 0,
+            \ 'scrollback':      0
+            \ }
+
+function! asyncomplete#sources#tmuxcomplete#register(opts)
+    let l:opts = extend(copy(s:defaultopts), a:opts)
+    call asyncomplete#register_source(l:opts)
+endfunction
+
+function! asyncomplete#sources#tmuxcomplete#completor(opt, ctx)
+    " taken from asyncomplete-buffer
+    let l:kw = matchstr(a:ctx.typed, '\w\+$')
+    let l:kwlen = len(l:kw)
+    if l:kwlen < 1
+        return
+    endif
+    " echom '#completor for ' . l:kw
+
+    let l:config = extend(copy(s:defaultconfig), get(a:opt, 'config', {}))
+    " echom 'config ' . string(l:config)
+
+    let l:params = {
+                \ 'name':     a:opt.name,
+                \ 'ctx':      a:ctx,
+                \ 'startcol': a:ctx.col - l:kwlen,
+                \ 'config':   l:config,
+                \ 'kw':       l:kw,
+                \ 'raw':      [],
+                \ 'mapped':   []
+                \ }
+
+    " Add first empty candidate as incomplete to allow adding more
+    " completions later, even if the context changed in between.
+    call s:complete(l:params, [''], 1)
+
+    if !l:config.filter_prefix
+        let l:kw = ''
+    endif
+
+    let l:cmd = tmuxcomplete#getcommandlist(l:kw, l:config.scrollback, l:config.splitmode)
+    if !l:config.sort_candidates
+        call add(l:cmd, '-n')
+    endif
+    " echom 'cmd ' . string(l:cmd)
+
+    let l:jobid = async#job#start(l:cmd, {
+                \ 'on_stdout': function('s:stdout', [l:params]),
+                \ 'on_exit':   function('s:exit',   [l:params]),
+                \ })
+endfunction
+
+function! s:stdout(params, id, data, event) abort
+    " echom '#stdout for ' . a:params.kw . ' with ' . (len(a:data) < 5 ? string(a:data) : string(a:data[0 : 1]) . ' ..' . len(a:data) . '.. ' . string(a:data[-2 : -1]))
+
+    call extend(a:params.raw, a:data) " to be mapped differently again on exit
+
+    if a:params.config.show_incomplete
+        " surround with pipes while incomplete
+        call extend(a:params.mapped, map(copy(a:data), '{"word":v:val,"menu":"|' . a:params.name . '|"}'))
+        call s:complete(a:params, a:params.mapped, 1)
+    endif
+endfunction
+
+function! s:exit(params, id, data, event) abort
+    " echom '#exit for ' . a:params.kw . ' with ' . a:data
+
+    if a:data != 0 " command failed
+        " echom 'failed with ' . a:data
+        " set candidates as complete to stop completing on context changes
+        call s:complete(a:params, [''], 0)
+        return
+    endif
+
+    " surround with brackends when complete
+    let l:mapped = map(a:params.raw, '{"word":v:val,"menu":"[' . a:params.name . ']"}')
+    call s:complete(a:params, l:mapped, 0)
+endfunction
+
+function! s:complete(params, candidates, incomplete)
+    call asyncomplete#complete(a:params.name, a:params.ctx, a:params.startcol, a:candidates, a:incomplete)
+endfunction
diff --git a/autoload/tmuxcomplete.vim b/autoload/tmuxcomplete.vim
index 893afdc..5ece09a 100644
--- a/autoload/tmuxcomplete.vim
+++ b/autoload/tmuxcomplete.vim
@@ -13,33 +13,39 @@ endfunction
 
 let s:script = expand('<sfile>:h:h') . "/sh/tmuxcomplete"
 
-function! s:build_command(base, capture_args, splitmode)
+function! s:build_command(base, capture_args, splitmode, as)
     let pattern   = '^' . escape(a:base, '*^$][.\') . '.'
     let list_args = get(g:, 'tmuxcomplete#list_args', '-a')
     let grep_args = tmuxcomplete#grepargs(a:base)
 
-    let command  =  'sh ' . shellescape(s:script)
-    let command .= ' -p ' . shellescape(pattern)
-    let command .= ' -s ' . shellescape(a:splitmode)
-    let command .= ' -l ' . shellescape(list_args)
-    let command .= ' -c ' . shellescape(a:capture_args)
-    let command .= ' -g ' . shellescape(grep_args)
+    let command = s:newcommand(a:as)
+    let command = s:addcommand2(command, a:as, 'sh', s:script)
+    let command = s:addcommand2(command, a:as, '-p', pattern)
+    let command = s:addcommand2(command, a:as, '-s', a:splitmode)
+    let command = s:addcommand2(command, a:as, '-l', list_args)
+    let command = s:addcommand2(command, a:as, '-c', a:capture_args)
+    let command = s:addcommand2(command, a:as, '-g', grep_args)
 
-    if $TMUX_PANE !=# ""     " if running inside tmux
-        let command .= ' -e' " exclude current pane
+    if $TMUX_PANE !=# "" " if running inside tmux
+        let command = s:addcommand1(command, a:as, '-e') " exclude current pane
     endif
 
     return command
 endfunction
 
 function! tmuxcomplete#getcommand(base, splitmode)
-    return s:build_command(a:base, s:capture_args, a:splitmode)
+    return s:build_command(a:base, s:capture_args, a:splitmode, 'string')
+endfunction
+
+function! tmuxcomplete#getcommandlist(base, scrollback, splitmode)
+    let capture_args = s:capture_args . ' -S -' . a:scrollback
+    return s:build_command(a:base, capture_args, a:splitmode, 'list')
 endfunction
 
 function! tmuxcomplete#completions(base, capture_args, splitmode)
-    let command = s:build_command(a:base, a:capture_args, a:splitmode)
+    let command = s:build_command(a:base, a:capture_args, a:splitmode, 'string')
 
-    let completions = system(command)
+    let completions = system(command) " TODO: use systemlist()?
     if v:shell_error != 0
         return []
     endif
@@ -97,6 +103,31 @@ function! tmuxcomplete#grepargs(base)
     return '-i'
 endfunction
 
+function! s:newcommand(as)
+    if a:as == 'list'
+        return []
+    else " string
+        return ''
+    endif
+endfunction
+
+function! s:addcommand1(command, as, value)
+    if a:as == 'list'
+        return add(a:command, a:value)
+    else " string
+        return (a:command == '' ? '' : a:command . ' ') . a:value
+    endif
+endfunction
+
+function! s:addcommand2(command, as, key, value)
+    if a:as == 'list'
+        call   add(a:command, a:key)
+        return add(a:command, a:value) " no escaping here
+    else " string
+        return (a:command == '' ? '' : a:command . ' ') . a:key . ' ' . shellescape(a:value)
+    endif
+endfunction
+
 " for integration with completion frameworks
 function! tmuxcomplete#gather_candidates()
     return tmuxcomplete#complete(0, '')
diff --git a/plugin/tmuxcomplete.vim b/plugin/tmuxcomplete.vim
index 0d93eb0..7c4884c 100644
--- a/plugin/tmuxcomplete.vim
+++ b/plugin/tmuxcomplete.vim
@@ -1,7 +1,7 @@
 if exists("g:tmuxcomplete#loaded") || &cp || v:version < 700
     finish
 endif
-let g:tmuxcomplete#loaded = '0.1.1' " version number
+let g:tmuxcomplete#loaded = '0.1.3' " version number
 
 function! s:init()
     let trigger = get(g:, 'tmuxcomplete#trigger', 'completefunc')
@@ -15,6 +15,9 @@ function! s:init()
     else
         echoerr "tmux-complete: unknown trigger: '" . trigger . "'"
     endif
+
+    let s:options = get(g:, 'tmuxcomplete#asyncomplete_source_options', {})
+    autocmd User asyncomplete_setup call asyncomplete#sources#tmuxcomplete#register(s:options)
 endfunction
 
 call s:init()
diff --git a/sh/tmuxcomplete b/sh/tmuxcomplete
index b459176..857240b 100644
--- a/sh/tmuxcomplete
+++ b/sh/tmuxcomplete
@@ -34,14 +34,16 @@ if ! tmux info > /dev/null 2>&1; then
 fi
 
 EXCLUDE='0'
+NOSORT='0'
 PATTERN=''
 SPLITMODE=words
 LISTARGS=''
 CAPTUREARGS=''
 GREPARGS=''
-while getopts ep:s:l:c:g: name
+while getopts enp:s:l:c:g: name
 do case $name in
     e) EXCLUDE="1";;
+    n) NOSORT="1";; # internal/undocumented, don't use, might be changed in the future
     p) PATTERN="$OPTARG";;
     s) SPLITMODE="$OPTARG";;
     l) LISTARGS="$OPTARG";;
@@ -87,19 +89,62 @@ capturepanes() {
 }
 
 split() {
-    if [ "$SPLITMODE" = "lines" ]; then
+    if [ "$SPLITMODE" = "ilines,words" ]; then
+        # this is most reabable, but not posix compliant
+        # tee >(splitilines) >(splitwords)
+
+        # from https://unix.stackexchange.com/a/43536
+        # this has some issues with trailing whitespace sometimes
+        # tmp_dir=$(mktemp -d)
+        # mkfifo "$tmp_dir/f1" "$tmp_dir/f2"
+        # splitilines <"$tmp_dir/f1" & pid1=$!
+        # splitwords  <"$tmp_dir/f2" & pid2=$!
+        # tee "$tmp_dir/f1" "$tmp_dir/f2"
+        # rm -rf "$tmp_dir"
+        # wait $pid1 $pid2
+
+        splitilinesandwords
+    elif [ "$SPLITMODE" = "lines" ]; then
         splitlines
-    else
+    elif [ "$SPLITMODE" = "ilines" ]; then
+        splitilines
+    elif [ "$SPLITMODE" = "words" ]; then
         splitwords
     fi
 }
 
+splitilinesandwords() {
+    # print full line to duplicate it
+    # on the duplicate substitute all spaces with newlines
+    # duplicate that result again
+    # in that duplicate replace all non word characters by linebreaks 
+    sed -e 'p;s/[[:space:]]\{1,\}/\
+        /g;p;s/[^a-zA-Z0-9_]\{1,\}/\
+        /g' |
+    # remove surrounding non-word characters
+    grep -o "\\w.*\\w"
+}
+
 splitlines() {
     # remove surrounding whitespace
     grep -o "\\S.*\\S"
 }
 
+splitilines() {
+    # starts at first word character
+    grep -o "\\w.*\\S"
+}
+
+# returns both WORDS and words of each given line
 splitwords() {
+    # use sed like this instead of tr?
+    # substitute all spaces with newlines
+    # duplicate that line
+    # in the duplicate replace all non word characters by linebreaks 
+    # sed -e 's/[[:space:]]\{1,\}/\
+    #     /g;p;s/[^a-zA-Z0-9_]/ /g;s/[[:space:]]\{1,\}/\
+    #     /g' |
+
     # copy lines and split words
     sed -e 'p;s/[^a-zA-Z0-9_]/ /g' |
     # split on spaces
@@ -108,6 +153,14 @@ splitwords() {
     grep -o "\\w.*\\w"
 }
 
+sortu() {
+    if [ "$NOSORT" = "1" ]; then
+        uniq
+    else
+        sort -u
+    fi
+}
+
 # list all panes
 listpanes |
 # filter out current pane