Use a better arg for FINDSTR when using the m,l command in Windows. (#887)

* Use a better arg for FINDSTR when using the m,l command in Windows.

* Remove trailing spaces.

* Use vim getf...() functions in place of DOS commands.

* Remove unnecessary variable.

* Put labels in the text of the file/dir listing.

nerdtree_plugin/fs_menu.vim

@@ -248,33 +248,13 @@ function! NERDTreeListNodeWin32()
     let l:node = g:NERDTreeFileNode.GetSelected()
 
     if !empty(l:node)
-
+        let l:path = l:node.path.str()
-        let l:save_shell = &shell
+        call nerdtree#echo(printf("%s:%s  MOD:%s  BYTES:%d  PERMISSIONS:%s",
-        set shell&
+                    \ toupper(getftype(l:path)),
-
+                    \ fnamemodify(l:path, ':t'),
-        if exists('+shellslash')
+                    \ strftime("%c", getftime(l:path)),
-            let l:save_shellslash = &shellslash
+                    \ getfsize(l:path),
-            set noshellslash
+                    \ getfperm(l:path)))
-        endif
-
-        let l:command = 'DIR /Q '
-                    \ . shellescape(l:node.path.str())
-                    \ . ' | FINDSTR "^[012][0-9]/[0-3][0-9]/[12][0-9][0-9][0-9]"'
-
-        let l:metadata = split(system(l:command), "\n")
-
-        if v:shell_error == 0
-            call nerdtree#echo(l:metadata[0])
-        else
-            call nerdtree#echoError('shell command failed')
-        endif
-
-        let &shell = l:save_shell
-
-        if exists('l:save_shellslash')
-            let &shellslash = l:save_shellslash
-        endif
-
         return
     endif