diff --git a/autoload/aceforeverd/completion.vim b/autoload/aceforeverd/completion.vim
index 95a312c..573bc9e 100644
--- a/autoload/aceforeverd/completion.vim
+++ b/autoload/aceforeverd/completion.vim
@@ -242,8 +242,8 @@ function! aceforeverd#completion#init_source_coc() abort
 
         " Remap <C-f> and <C-b> for scroll float windows/popups.
         if has('nvim-0.4.0') || has('patch-8.2.0750')
-            nnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
-            nnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
+            nmap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "<Plug>(SmoothieForwards)"
+            nmap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "<Plug>(SmoothieBackwards)"
             inoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
             inoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
             vnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
diff --git a/coc-settings.json b/coc-settings.json
index ebafccf..78a62ee 100644
--- a/coc-settings.json
+++ b/coc-settings.json
@@ -36,7 +36,7 @@
   "diagnostic-languageserver.filetypes": {
     "vim": "vint",
     "sh": "shellcheck",
-    "markdown": ["write-good"],
+    "markdown": ["write-good", "languagetool"],
     "cpp": ["cpplint"],
     "dockerfile": ["hadolint"],
     "python": ["mypy", "pylint"]
@@ -71,5 +71,20 @@
       ]
     }
   },
-  "translator.engines":["google"]
+  "diagnostic-languageserver.formatters": {
+    "black": {
+      "command": "black",
+      "args": ["-q", "-"]
+    },
+    "isort": {
+      "command": "isort",
+      "args": ["-q", "-"]
+    },
+    "docformatter": {
+      "command": "docformatter",
+      "args": ["-"]
+    }
+  },
+  // coc-translator
+  "translator.engines": ["google"]
 }
diff --git a/vimrc.vim b/vimrc.vim
index 8e10e04..273fbb2 100644
--- a/vimrc.vim
+++ b/vimrc.vim
@@ -168,7 +168,9 @@ if dein#load_state(s:dein_repo)
     call dein#add('mhinz/vim-startify')
     call dein#add('ntpeters/vim-better-whitespace')
     call dein#add('majutsushi/tagbar')
+    call dein#add('liuchengxu/vista.vim')
     call dein#add('wincent/terminus')
+    call dein#add('psliwka/vim-smoothie')
     call dein#add('chrisbra/Colorizer')
     call dein#add('junegunn/rainbow_parentheses.vim')