diff --git a/autoload/SpaceVim/api/data/toml.vim b/autoload/SpaceVim/api/data/toml.vim
index e3d8b35f2..70a8e7249 100644
--- a/autoload/SpaceVim/api/data/toml.vim
+++ b/autoload/SpaceVim/api/data/toml.vim
@@ -233,14 +233,14 @@ endfunction
 "
 function! s:self._array(input) abort
   let ary = []
-  let _ = self._consume(a:input, '\[')
+  call self._consume(a:input, '\[')
   call self._skip(a:input)
   while !self._eof(a:input) && !self._match(a:input, '\]')
     let ary += [self._value(a:input)]
     call self._consume(a:input, ',\?')
     call self._skip(a:input)
   endwhile
-  let _ = self._consume(a:input, '\]')
+  call self._consume(a:input, '\]')
   return ary
 endfunction
 
diff --git a/autoload/SpaceVim/api/vim.vim b/autoload/SpaceVim/api/vim.vim
index d9ccbd9b8..6e235cf14 100644
--- a/autoload/SpaceVim/api/vim.vim
+++ b/autoload/SpaceVim/api/vim.vim
@@ -131,11 +131,22 @@ function! s:self.setbufvar(buf, dict) abort
   endfor
 endfunction
 
-function! s:self.get_qf_winnr() abort
-  let wins = filter(getwininfo(), 'v:val.quickfix && !v:val.loclist')
-  " assert(len(wins) <= 1)
-  return empty(wins) ? 0 : wins[0].winnr
-endfunction
+" https://vi.stackexchange.com/questions/16585/how-to-differentiate-quickfix-window-buffers-and-location-list-buffers
+if has('patch-7.4-2215') " && exists('*getwininfo')
+  function! s:self.get_qf_winnr() abort
+    let wins = filter(getwininfo(), 'v:val.quickfix && !v:val.loclist')
+    " assert(len(wins) <= 1)
+    return empty(wins) ? 0 : wins[0].winnr
+  endfunction
+else
+  function! s:self.get_qf_winnr() abort
+    let buffers = split(self.__cmp.execute('ls!'), "\n")
+    call filter(buffers, 'v:val =~# "\\V[Quickfix List]"')
+    " :cclose removes the buffer from the list (in my config only??)
+    " assert(len(buffers) <= 1)
+    return empty(buffers) ? 0 : eval(matchstr(buffers[0], '\v^\s*\zs\d+'))
+  endfunction
+endif
 
 function! s:self.is_qf_win(winnr) abort
   return a:winnr ==# self.get_qf_winnr()
@@ -188,7 +199,6 @@ endfunction
 if has('nvim')
   function! s:self.getchar(...) abort
     if !empty(get(g:, '_spacevim_input_list', []))
-      sleep 1000m
       return remove(g:_spacevim_input_list, 0)
     endif
     let ret = call('getchar', a:000)
@@ -197,7 +207,6 @@ if has('nvim')
 else
   function! s:self.getchar(...) abort
     if !empty(get(g:, '_spacevim_input_list', []))
-      sleep 1000m
       return remove(g:_spacevim_input_list, 0)
     endif
     let ret = call('getchar', a:000)
diff --git a/autoload/SpaceVim/api/vim/window.vim b/autoload/SpaceVim/api/vim/window.vim
index f10451587..d85865e35 100644
--- a/autoload/SpaceVim/api/vim/window.vim
+++ b/autoload/SpaceVim/api/vim/window.vim
@@ -79,6 +79,11 @@ if has('nvim')
   endfunction
 else
   function! s:self.is_float(winnr) abort
+    " vim without win_getid() is old, which do not support floating window.
+    " so if_float always return 0
+    if !exists('*win_getid')
+      return 0
+    endif
     let id = win_getid(a:winnr)
     if id > 0 && exists('*popup_getoptions')
       try
diff --git a/autoload/SpaceVim/autocmds.vim b/autoload/SpaceVim/autocmds.vim
index ebe8a2ecc..bfea9872b 100644
--- a/autoload/SpaceVim/autocmds.vim
+++ b/autoload/SpaceVim/autocmds.vim
@@ -9,6 +9,7 @@
 
 let s:SYS = SpaceVim#api#import('system')
 let s:JOB = SpaceVim#api#import('job')
+let s:VIM = SpaceVim#api#import('vim')
 let s:CMP = SpaceVim#api#import('vim#compatible')
 
 
@@ -198,30 +199,11 @@ function! s:disable_welcome() abort
 endfunction
 
 function! s:close_quickfix() abort
-  if winnr() == s:get_qf_winnr()
+  if winnr() == s:VIM.get_qf_winnr()
     cclose
   else
     lclose
   endif
 endfunction
 
-" https://vi.stackexchange.com/questions/16585/how-to-differentiate-quickfix-window-buffers-and-location-list-buffers
-if has('patch-7.4-2215') " && exists('*getwininfo')
-  function! s:get_qf_winnr() abort
-    let wins = filter(getwininfo(), 'v:val.quickfix && !v:val.loclist')
-    " assert(len(wins) <= 1)
-    return empty(wins) ? 0 : wins[0].winnr
-  endfunction
-else
-  let s:k_msg_qflist = '[Quickfix List]'
-  function! s:get_qf_winnr() abort
-    let buffers = s:CMP.execute('ls!')
-    call filter(buffers, 'v:val =~ "\\V".s:k_msg_qflist')
-    " :cclose removes the buffer from the list (in my config only??)
-    " assert(len(buffers) <= 1)
-    return empty(buffers) ? 0 : eval(matchstr(buffers[0], '\v^\s*\zs\d+'))
-  endfunction
-endif
-
-
 " vim:set et sw=2:
diff --git a/test/plugin/tabmanager.vader b/test/plugin/tabmanager.vader
index 7e764f567..e57e4e383 100644
--- a/test/plugin/tabmanager.vader
+++ b/test/plugin/tabmanager.vader
@@ -1,5 +1,4 @@
 Execute ( SpaceVim plugin: tabmanager.vim ):
   call SpaceVim#plugins#tabmanager#open()
-  LeaderGuide " "
   AssertEqual &ft, 'SpaceVimTabsManager'
 
diff --git a/vimfiler b/vimfiler
new file mode 100644
index 000000000..e69de29bb