diff --git a/autoload/ack.vim b/autoload/ack.vim
index b6afdba4..31c0aea0 100644
--- a/autoload/ack.vim
+++ b/autoload/ack.vim
@@ -77,6 +77,18 @@ function! ack#AckHelp(cmd, args) "{{{
   call ack#Ack(a:cmd, args)
 endfunction "}}}
 
+function! ack#AckBuffer(cmd, args) "{{{
+  let l:bufs = filter(range(1, bufnr('$')), 'buflisted(v:val)')
+  let l:files = []
+  for buf in l:bufs
+    let l:file = shellescape(fnamemodify(bufname(buf), ':p'))
+    if !isdirectory(l:file)
+      call add(l:files, l:file)
+    endif
+  endfor
+  call ack#Ack(a:cmd, a:args . ' ' . join(l:files, ' '))
+endfunction "}}}
+
 function! ack#AckWindow(cmd, args) "{{{
   let files = tabpagebuflist()
 
diff --git a/doc/ack.txt b/doc/ack.txt
index 22e884bc..d248238f 100644
--- a/doc/ack.txt
+++ b/doc/ack.txt
@@ -22,6 +22,12 @@ shows the results in a split window.
     will open the |Quickfix| window for you. If [!] is not given the first
     occurrence is jumped to.
 
+:AckBuffer[!] [options] {pattern}                                 *:AckBuffer*
+
+    Search for {pattern} in all open buffers. Behaves just like the |:grep|
+    command, but will open the |QuickFix| window for you. If [!] is not given
+    the first error is jumped to.
+
 :AckAdd [options] {pattern} [{directory}]                            *:AckAdd*
 
     Just like |:Ack|, but instead of making a new list, the matches are
@@ -36,6 +42,11 @@ shows the results in a split window.
     Just like |:Ack| but instead of the |quickfix| list, matches are placed in
     the current |location-list|.
 
+:LAckBuffer [options] {pattern} [{directory}]                    *:LAckBuffer*
+
+    Just like |:AckBuffer| but instead of the |quickfix| list, matches are
+    added to the current |location-list|
+
 :LAckAdd [options] {pattern} [{directory}]                          *:LAckAdd*
 
     Just like |:AckAdd| but instead of the |quickfix| list, matches are added
diff --git a/plugin/ack.vim b/plugin/ack.vim
index 202ae2ea..1872de2a 100644
--- a/plugin/ack.vim
+++ b/plugin/ack.vim
@@ -68,9 +68,11 @@ if !exists("g:ack_use_cword_for_empty_search")
 endif
 
 command! -bang -nargs=* -complete=file Ack           call ack#Ack('grep<bang>', <q-args>)
+command! -bang -nargs=* -complete=file AckBuffer     call ack#AckBuffer('grep<bang>', <q-args>)
 command! -bang -nargs=* -complete=file AckAdd        call ack#Ack('grepadd<bang>', <q-args>)
 command! -bang -nargs=* -complete=file AckFromSearch call ack#AckFromSearch('grep<bang>', <q-args>)
 command! -bang -nargs=* -complete=file LAck          call ack#Ack('lgrep<bang>', <q-args>)
+command! -bang -nargs=* -complete=file LAckBuffer    call ack#AckBuffer('lgrep<bang>', <q-args>)
 command! -bang -nargs=* -complete=file LAckAdd       call ack#Ack('lgrepadd<bang>', <q-args>)
 command! -bang -nargs=* -complete=file AckFile       call ack#Ack('grep<bang> -g', <q-args>)
 command! -bang -nargs=* -complete=help AckHelp       call ack#AckHelp('grep<bang>', <q-args>)