Small bug fixes

FIX: Typo in sort function
FIX: Keyword completion
CHG: Sort done.txt by completion date

README.markdown

@@ -95,7 +95,7 @@ adding the next lines to your vimrc:
 
 The TodoComplete function is designed to complete projects (starting by '+')
 and context (starting by '@'). If you use it on a regular word, it will do a
-normal buffer completion.
+normal keyword completion (on all buffers).
 If you try to complete a project, it will propose all projects in all open
 buffers and for each of them, it will show their context and the name of the
 buffers in which they appears in the preview window.
@@ -125,3 +125,6 @@ sorted by at the beginning of the file, the rest of the file is not modified.
 `<LocalLeader>x` is a toggle which allow you to unmark a task as done.
 
 Syntax highlighting for couples key:value
+
+If the current buffer is a done.txt file, the basic sort sorts on completion
+date.

doc/todo.txt

@@ -86,7 +86,7 @@ COMPLETION                                                      *todo-complete*
 
 The TodoComplete function is designed to complete projects (starting by '+')
 and context (starting by '@'). If you use it on a regular word, it will do a
-normal buffer completion.
+normal keyword completion (on all buffers).
 If you try to complete a project, it will propose all projects in all open
 buffers and for each of them, it will show their context and the name of the
 buffers in which they appears in the preview window.

ftplugin/todo.vim

@@ -3,7 +3,7 @@
 " Author:      David Beniamine <David@Beniamine.net>, Leandro Freitas <freitass@gmail.com>
 " License:     Vim license
 " Website:     http://github.com/dbeniamine/todo.txt-vim
-" Version:     0.7
+" Version:     0.7.1
 
 " Save context {{{1
 let s:save_cpo = &cpo
@@ -79,9 +79,15 @@ endfunction
 
 function! TodoTxtSort()
     " vim :sort is usually stable
+    " we sort first on contexts, then on projects and then on priority
+    if expand('%')=~'done.txt'
+        silent! %s/\(x\s*\d\{4}\)-\(\d\{2}\)-\(\d\{2}\)/\1\2\3/g
+        sort n /^x\s*/
+        silent! %s/\(x\s*\d\{4}\)\(\d\{2}\)/\1-\2-/g
     else
-    sort /@[a-zA-Z]*/ r
+        sort /@[a-zA-Z]*/ r
         sort /+[a-zA-Z]*/ r
+        sort /\v\([A-Z]\)/ r
     endif
 endfunction
 
@@ -269,6 +275,24 @@ function! TodoFoldText()
                 \ . (v:foldend - v:foldstart + 1)
                 \ . ' Completed tasks '
 endfunction
+
+" Simple keyword completion on all buffers
+function! TodoKeywordComplete(base)
+        " Search for matchs
+        let res = []
+        for bufnr in range(1,bufnr('$'))
+            let lines=getbufline(bufnr,1,"$")
+            for line in lines
+                if line =~ a:base
+                    " init temporary item
+                    let item={}
+                    let item.word=substitute(line,'.*\('.a:base.'\S*\).*','\1',"")
+                    call add(res,item)
+                endif
+            endfor
+        endfor
+        return res
+endfunction
 
 " Intelligent completion for projects and Contexts
 fun! TodoComplete(findstart, base)
@@ -279,6 +303,9 @@ fun! TodoComplete(findstart, base)
             let start -= 1
         endwhile
         return start
+    else
+        if a:base !~ '^+' && a:base !~ '^@'
+            return TodoKeywordComplete(a:base)
         endif
         " Opposite sign
         let opp=a:base=~'+'?'@':'+'