diff --git a/autoload/SpaceVim/api/unicode/box.vim b/autoload/SpaceVim/api/unicode/box.vim
index 555d72c8c..e81f3ad1a 100644
--- a/autoload/SpaceVim/api/unicode/box.vim
+++ b/autoload/SpaceVim/api/unicode/box.vim
@@ -21,6 +21,7 @@ scriptencoding utf-8
 let s:self = {}
 let s:self._json = SpaceVim#api#import('data#json')
 let s:self._string = SpaceVim#api#import('data#string')
+let s:self.box_width = 40
 " http://jrgraphix.net/r/Unicode/2500-257F
 " http://www.alanflavell.org.uk/unicode/unidata.html
 
@@ -58,16 +59,16 @@ function! s:self.drawing_table(json, ...) abort
   let items = self._json.json_decode(a:json)
   let col = len(keys(items[0]))
   let top_line = top_left_corner
-        \ . repeat(repeat(top_bottom_side, 15) . top_middle, col - 1)
-        \ . repeat(top_bottom_side, 15)
+        \ . repeat(repeat(top_bottom_side, self.box_width) . top_middle, col - 1)
+        \ . repeat(top_bottom_side, self.box_width)
         \ . top_right_corner
   let middle_line = left_middle
-        \ . repeat(repeat(top_bottom_side, 15) . middle, col - 1)
-        \ . repeat(top_bottom_side, 15)
+        \ . repeat(repeat(top_bottom_side, self.box_width) . middle, col - 1)
+        \ . repeat(top_bottom_side, self.box_width)
         \ . right_middle
   let bottom_line = bottom_left_corner
-        \ . repeat(repeat(top_bottom_side, 15) . bottom_middle, col - 1)
-        \ . repeat(top_bottom_side, 15)
+        \ . repeat(repeat(top_bottom_side, self.box_width) . bottom_middle, col - 1)
+        \ . repeat(top_bottom_side, self.box_width)
         \ . bottom_right_corner
   call add(table, top_line)
   let tytle = side
@@ -77,14 +78,14 @@ function! s:self.drawing_table(json, ...) abort
     let keys = a:1
   endif
   for key in keys
-    let tytle .= self._string.fill(key , 15) . side
+    let tytle .= self._string.fill_middle(key , self.box_width) . side
   endfor
   call add(table, tytle)
   call add(table, middle_line)
   for item in items
     let value_line = side
     for key in keys
-      let value_line .= self._string.fill(item[key], 15) . side
+      let value_line .= self._string.fill(item[key], self.box_width) . side
     endfor
     call add(table, value_line)
     call add(table, middle_line)
diff --git a/autoload/SpaceVim/layers/cscope.vim b/autoload/SpaceVim/layers/cscope.vim
index 76c7f3465..0f9d29a5f 100644
--- a/autoload/SpaceVim/layers/cscope.vim
+++ b/autoload/SpaceVim/layers/cscope.vim
@@ -38,3 +38,29 @@ function! SpaceVim#layers#cscope#health() abort
   call SpaceVim#layers#cscope#config()
   return 1
 endfunction
+
+function! SpaceVim#layers#cscope#set_variable(var) abort
+
+  let g:cscope_cmd = get(a:var,
+        \ 'cscope_command',
+        \ 'cscope')
+  let g:cscope_auto_update = get(a:var,
+        \ 'auto_update',
+        \ 1)
+  let g:cscope_open_location = get(a:var,
+        \ 'open_location',
+        \ 1)
+  let g:cscope_preload_path = get(a:var,
+        \ 'preload_path',
+        \ '')
+
+endfunction
+
+function! SpaceVim#layers#cscope#get_options() abort
+
+  return ['cscope_command',
+        \ 'auto_update',
+        \ 'open_location',
+        \ 'preload_path']
+
+endfunction
diff --git a/bundle/cscope.vim/autoload/cscope.vim b/bundle/cscope.vim/autoload/cscope.vim
index ae40d2986..ad16e73a1 100644
--- a/bundle/cscope.vim/autoload/cscope.vim
+++ b/bundle/cscope.vim/autoload/cscope.vim
@@ -45,19 +45,18 @@ set cpo&vim
 
 " where to store cscope file?
 
-function! s:echo(msg) abort
-  echon a:msg
-endfunction
-
+let s:logger = SpaceVim#logger#derive('cscope')
+let s:notify = SpaceVim#api#import('notify')
+let s:notify.timeout = 5000
+let s:box = SpaceVim#api#import('unicode#box')
+let s:box.box_width = 40
 let s:FILE = SpaceVim#api#import('file')
+let s:JOB = SpaceVim#api#import('job')
 let s:JSON = SpaceVim#api#import('data#json')
 let s:cscope_cache_dir = s:FILE.unify_path('~/.cache/SpaceVim/cscope/')
 let s:cscope_db_index = s:cscope_cache_dir.'index'
 let s:dbs = {}
 
-
-
-
 ""
 " search your {word} with {action} in the database suitable for current
 " file.
@@ -65,7 +64,7 @@ function! cscope#find(action, word) abort
   let dirtyDirs = []
   for d in keys(s:dbs)
     if s:dbs[d]['dirty'] == 1
-      call add(dirtyDirs, s:dbs[d].root)
+      call add(dirtyDirs, d)
     endif
   endfor
   if len(dirtyDirs) > 0
@@ -79,8 +78,14 @@ function! cscope#find(action, word) abort
         lw
       endif
     catch
-      echohl WarningMsg | echo 'Can not find '.a:word.' with querytype as '.a:action.'.' | echohl None
+      let message = 'Can not find '.a:word.' with querytype as '.a:action.'.'
+      let s:notify.notify_max_width = strwidth(message) + 10
+      call s:notify.notify(message, 'WarningMsg')
     endtry
+  elseif dbl == 2 " the database does not init, the process has been started.
+      let message = 'start to init database, please try later!'
+      let s:notify.notify_max_width = strwidth(message) + 10
+      call s:notify.notify(message, 'WarningMsg')
   endif
 endfunction
 
@@ -93,8 +98,8 @@ endfunction
 
 
 function! s:CheckNewFile(dir, newfile) abort
+  let id = s:dbs[a:dir]['id']
   let dir = s:FILE.path_to_fname(a:dir)
-  let id = s:dbs[dir]['id']
   let cscope_files = s:cscope_cache_dir. dir .'/cscope.files'
   let files = readfile(cscope_files)
   " @todo support threshold
@@ -117,41 +122,52 @@ function! s:FlushIndex() abort
 endfunction
 
 
-function! s:ListFiles(dir) abort
-  let d = []
-  let f = []
-  let cwd = a:dir
-  try
-    while cwd != ''
-      let a = split(globpath(cwd, '*'), "\n")
-      for fn in a
-        if getftype(fn) ==# 'dir'
-          if !exists('g:cscope_ignored_dir') || fn !~? g:cscope_ignored_dir
-            call add(d, fn)
-          endif
-        elseif getftype(fn) !=# 'file'
-          continue
-        else
-          if stridx(fn, ' ') !=# -1
-            let fn = '"'.fn.'"'
-          endif
-          call add(f, fn)
-        endif
-      endfor
-      let cwd = len(d) ? remove(d, 0) : ''
-    endwhile
-  catch /^Vim:Interrupt$/
-  catch
-    echo 'caught' v:exception
-  endtry
-  return f
+function! s:on_list_file_exit(id, date, event) abort
+
+endfunction
+
+
+let s:list_files_process = {}
+
+function! s:list_files_stdout(id, data, event) abort
+  call extend(s:list_files_process['jobid' . a:id].cscope_files, a:data)
+endfunction
+
+function! s:list_files_exit(id, date, event) abort
+  if a:date == 0
+    call writefile(s:list_files_process['jobid' . a:id].cscope_files,
+          \ s:list_files_process['jobid' . a:id].cscope_files_path
+          \ )
+    call s:run_create_database_job(s:list_files_process['jobid' . a:id].dir,
+          \ s:list_files_process['jobid' . a:id].cscope_files_path,
+          \ s:list_files_process['jobid' . a:id].cscope_db,
+          \ s:list_files_process['jobid' . a:id].load,
+          \ )
+  else
+    call s:logger.warn('failed to list files in dir:' . s:list_files_process['jobid' . a:id].dir)
+  endif
+endfunction
+
+function! s:list_project_files(dir, cscope_files, cscope_db, load) abort
+  let jobid = s:JOB.start(['rg', '--color=never', '--files', a:dir], {
+        \ 'on_stdout' : function('s:list_files_stdout'),
+        \ 'on_exit' : function('s:list_files_exit')
+        \ })
+  let s:list_files_process['jobid' . jobid] = {
+        \ 'jobid' : jobid,
+        \ 'dir' : a:dir,
+        \ 'cscope_files' : [],
+        \ 'cscope_db' : a:cscope_db,
+        \ 'load' : a:load,
+        \ 'cscope_files_path' : a:cscope_files
+        \ }
 endfunction
 
 ""
 " update all existing cscope databases in case that you disable cscope database
 " auto update.
 function! cscope#update_databeses() abort
-  call s:updateDBs(map(keys(s:dbs), 's:dbs[v:val].root'))
+  call s:updateDBs(keys(s:dbs))
 endfunction
 
 
@@ -159,12 +175,13 @@ endfunction
 " Create databases for current project
 function! cscope#create_databeses() abort
   let dir = SpaceVim#plugins#projectmanager#current_root()
-  call s:InitDB(dir)
+  call s:init_database(dir, 0)
 endfunction
 
 
 " 0 -- loaded
 " 1 -- cancelled
+" 2 -- init db
 function! s:AutoloadDB(dir) abort
   let ret = 0
   let m_dir = s:GetBestPath(a:dir)
@@ -173,8 +190,8 @@ function! s:AutoloadDB(dir) abort
     let m_dir = input('', a:dir, 'dir')
     if m_dir !=# ''
       let m_dir = s:CheckAbsolutePath(m_dir, a:dir)
-      call s:InitDB(m_dir)
-      call s:LoadDB(m_dir)
+      call s:init_database(m_dir, 1)
+      let ret = 2
     else
       let ret = 1
     endif
@@ -189,9 +206,8 @@ endfunction
 
 function! s:updateDBs(dirs) abort
   for d in a:dirs
-    call s:CreateDB(d, 0)
+    call s:create_database(d, 0, 0)
   endfor
-  call s:FlushIndex()
 endfunction
 
 
@@ -201,21 +217,24 @@ function! cscope#clear_databases(...) abort
   silent cs kill -1
   if a:0 == 0
     let s:dbs = {}
+    call s:notify.notify('All databases cleared!', 'String')
     call s:RmDBfiles()
   else
     let dir = s:FILE.path_to_fname(a:1)
-    let id = s:dbs[dir]['id']
     call delete(s:cscope_cache_dir. dir . '/cscope.files')
     call delete(s:cscope_cache_dir. dir . '/cscope.db')
-    unlet s:dbs[dir]
-    call s:echo('database cleared: ' . s:cscope_cache_dir. dir .'/cscope.db')
+    unlet s:dbs[a:1]
+    let message = 'databases cleared:' . a:1
+    let s:notify.notify_max_width = strwidth(message) + 10
+    call s:notify.notify(message, 'WarningMsg')
+    call s:logger.info('database cleared: ' . s:cscope_cache_dir. dir .'/cscope.db')
     call s:FlushIndex()
   endif
 endfunction
 
 " complete function for command :CscopeClear
 function! cscope#listDirs(A,L,P) abort
-  return map(keys(s:dbs), 's:dbs[v:val].root')
+  return keys(s:dbs)
 endfunction
 
 function! ToggleLocationList() abort
@@ -234,11 +253,11 @@ function! ToggleLocationList() abort
 endfunction
 
 function! s:GetBestPath(dir) abort
-  let f = s:FILE.path_to_fname(a:dir)
+  let f = a:dir
   let bestDir = ''
   for d in keys(s:dbs)
     if stridx(f, d) == 0 && len(d) > len(bestDir)
-      return s:dbs[d].root
+      return d
     endif
   endfor
   return ''
@@ -268,24 +287,27 @@ endfunction
 " 2. loadtimes:
 " 3. dirty:
 " 4. root: path of the project
+"
+" the argv: dir, load?
+"
+" if load == 1, the database will be loaded after init
 
-function! s:InitDB(dir) abort
+function! s:init_database(dir, load) abort
+  call s:logger.debug('start to init database for:' . a:dir)
   let id = localtime()
-  let dir = s:FILE.path_to_fname(a:dir)
-  let s:dbs[dir] = {}
-  let s:dbs[dir]['id'] = id
-  let s:dbs[dir]['loadtimes'] = 0
-  let s:dbs[dir]['dirty'] = 0
-  let s:dbs[dir]['root'] = a:dir
-  call s:CreateDB(a:dir, 1)
-  call s:FlushIndex()
+  let s:dbs[a:dir] = {}
+  let s:dbs[a:dir]['id'] = id
+  let s:dbs[a:dir]['loadtimes'] = 0
+  let s:dbs[a:dir]['dirty'] = 0
+  let s:dbs[a:dir]['root'] = a:dir
+  call s:create_database(a:dir, 1, a:load)
 endfunction
 
 
 function! s:add_databases(db) abort
   exe 'silent cs add ' . a:db
   if cscope_connection(2, a:db) == 1
-    call s:echo('cscope added: ' . a:db)
+    call s:logger.info('cscope added: ' . a:db)
     return 0
   else
     return 1
@@ -296,26 +318,35 @@ function! s:LoadDB(dir) abort
   let dir = s:FILE.path_to_fname(a:dir)
   silent cs kill -1
   call s:add_databases(s:cscope_cache_dir . dir .'/cscope.db')
-  let s:dbs[dir]['loadtimes'] = s:dbs[dir]['loadtimes'] + 1
+  let s:dbs[a:dir]['loadtimes'] = s:dbs[a:dir]['loadtimes'] + 1
   call s:FlushIndex()
 endfunction
 
 function! cscope#list_databases() abort
   let dirs = keys(s:dbs)
+  let databases = []
   if len(dirs) == 0
-    echo 'You have no cscope dbs now.'
+    call s:notify.notify('no cscope dbs now.', 'WarningMsg')
+    call s:notify.notify('Press SPC m c i to init.', 'WarningMsg')
   else
-    let s = ['  PROJECT_ROOT                   LOADTIMES']
     for d in dirs
       let id = s:dbs[d]['id']
       if cscope_connection(2, s:cscope_cache_dir. d . '/cscope.db') == 1
-        let l = printf('* %s                   %d', s:dbs[d].root, s:dbs[d]['loadtimes'])
+        " let l = printf('* %s                   %d', s:dbs[d].root, )
+        let l = {
+              \ 'project' : '* ' .d,
+              \ 'loadtimes' : s:dbs[d]['loadtimes']
+              \ }
       else
-        let l = printf('  %s                   %d', s:dbs[d].root, s:dbs[d]['loadtimes'])
+        let l = {
+              \ 'project' : ' ' .d,
+              \ 'loadtimes' : s:dbs[d]['loadtimes']
+              \ }
       endif
-      call add(s, l)
+      call add(databases, l)
     endfor
-    echo join(s, "\n")
+    let table = s:box.drawing_table(s:JSON.json_encode(databases), ['project', 'loadtimes'])
+    echo join(table, "\n")
   endif
 endfunction
 
@@ -336,9 +367,8 @@ function! cscope#preloadDB() abort
     let m_dir = s:CheckAbsolutePath(m_dir, m_dir)
     let m_key = s:FILE.path_to_fname(m_dir)
     if !has_key(s:dbs, m_key)
-      call s:InitDB(m_dir)
+      call s:init_database(m_dir, 1)
     endif
-    call s:LoadDB(m_dir)
   endfor
 endfunction
 
@@ -364,33 +394,58 @@ function! cscope#onChange() abort
   endif
 endfunction
 
-function! s:CreateDB(dir, init) abort
+function! s:on_create_db_exit(id, data, event) abort
+  let d = s:create_db_process['jobid' . a:id].dir
+  if a:data !=# 0
+    echohl WarningMsg | echo 'Failed to create cscope database for ' . d | echohl None
+  else
+    let s:dbs[d]['dirty'] = 0
+    let message = 'database created for: ' . d
+    let s:notify.notify_max_width = strwidth(message) + 10
+    call s:notify.notify(message, 'WarningMsg')
+    if s:create_db_process['jobid' . a:id].load
+      call s:LoadDB(d)
+    else
+      call s:FlushIndex()
+    endif
+  endif
+endfunction
+
+
+let s:create_db_process = {}
+
+
+" argvs:
+" dir: the path of project
+" init: init database?
+" load: load after init
+function! s:create_database(dir, init, load) abort
   let dir = s:FILE.path_to_fname(a:dir)
-  let id = s:dbs[dir]['id']
   let cscope_files = s:cscope_cache_dir . dir . '/cscope.files'
   let cscope_db = s:cscope_cache_dir . dir . '/cscope.db'
-  if ! isdirectory(s:cscope_cache_dir . dir)
-    call mkdir(s:cscope_cache_dir . dir)
-  endif
-  if !filereadable(cscope_files) || a:init
-    let files = s:ListFiles(a:dir)
-    call writefile(files, cscope_files)
-  endif
   try
     exec 'silent cs kill '.cscope_db
   catch
   endtry
-  let save_x = @x
-  redir @x
-  exec 'silent !'.g:cscope_cmd.' -b -i '.cscope_files.' -f'.cscope_db
-  redi END
-  if @x =~# "\nCommand terminated\n"
-    echohl WarningMsg | echo 'Failed to create cscope database for ' . a:dir | echohl None
-  else
-    let s:dbs[dir]['dirty'] = 0
-    call s:echo('database created: ' . cscope_db)
+  if !isdirectory(s:cscope_cache_dir . dir)
+    call mkdir(s:cscope_cache_dir . dir)
   endif
-  let @x = save_x
+  if !filereadable(cscope_files) || a:init
+    call s:list_project_files(a:dir, cscope_files, cscope_db, a:load)
+  endif
+endfunction
+
+function! s:run_create_database_job(dir, cscope_files, cscope_db, load) abort
+  let jobid = s:JOB.start([g:cscope_cmd, '-b', '-i', a:cscope_files, '-f', a:cscope_db], {
+        \ 'on_exit' : function('s:on_create_db_exit')
+        \ })
+  let s:create_db_process['jobid' . jobid] = {
+        \ 'jobid' : jobid,
+        \ 'dir' : a:dir,
+        \ 'load' : a:load,
+        \ 'cscope_db' : a:cscope_db,
+        \ }
+
 endfunction
 
 ""
diff --git a/bundle/cscope.vim/autoload/cscope/logger.vim b/bundle/cscope.vim/autoload/cscope/logger.vim
deleted file mode 100644
index 431408af1..000000000
--- a/bundle/cscope.vim/autoload/cscope/logger.vim
+++ /dev/null
@@ -1,35 +0,0 @@
-let s:LOG = SpaceVim#api#import('logger')
-
-call s:LOG.set_name('cscope.vim')
-call s:LOG.set_level(1)
-call s:LOG.set_silent(1)
-call s:LOG.set_verbose(1)
-
-function! cscope#logger#info(msg)
-
-    call s:LOG.info(a:msg)
-
-endfunction
-
-
-function! cscope#logger#view()
-  let info = "### cscope.vim runtime log :\n\n"
-  let info .= "```log\n"
-
-  let info .= s:LOG.view(s:LOG.level)
-
-  let info .= "\n```\n"
-  tabnew +setl\ nobuflisted
-  nnoremap <buffer><silent> q :bd!<CR>
-  for msg in split(info, "\n")
-    call append(line('$'), msg)
-  endfor
-  normal! "_dd
-  setl nomodifiable
-  setl buftype=nofile
-  setl filetype=markdown
-endfunction
-
-function! cscope#logger#clear() abort
-    call s:LOG.clear(1)
-endfunction
diff --git a/bundle/cscope.vim/doc/cscope.vim.txt b/bundle/cscope.vim/doc/cscope.vim.txt
index b0861bd9f..d0f51849f 100644
--- a/bundle/cscope.vim/doc/cscope.vim.txt
+++ b/bundle/cscope.vim/doc/cscope.vim.txt
@@ -4,10 +4,9 @@ Shidong Wang                                                      *cscope.vim*
 ==============================================================================
 CONTENTS                                                 *cscope.vim-contents*
   1. Introduction...........................................|cscope.vim-intro|
-  2. Configuration.........................................|cscope.vim-config|
-  3. Commands............................................|cscope.vim-commands|
-  4. KEY MAPPINGS....................................|cscope.vim-key-mappings|
-  5. FAQ......................................................|cscope.vim-faq|
+  2. Commands............................................|cscope.vim-commands|
+  3. KEY MAPPINGS....................................|cscope.vim-key-mappings|
+  4. FAQ......................................................|cscope.vim-faq|
 
 ==============================================================================
 INTRODUCTION                                                *cscope.vim-intro*
@@ -34,12 +33,6 @@ database.
 Cscove frees you from creating/connecting/updating cscope database, let you
 focus on code browsing.
 
-==============================================================================
-CONFIGURATION                                              *cscope.vim-config*
-
-                                                             *g:cscope_silent*
-Silent or not when run cscope command. by default it is 1.
-
 ==============================================================================
 COMMANDS                                                 *cscope.vim-commands*
 
diff --git a/bundle/cscope.vim/plugin/cscope.vim b/bundle/cscope.vim/plugin/cscope.vim
index e3a30ce0a..e8731a44e 100644
--- a/bundle/cscope.vim/plugin/cscope.vim
+++ b/bundle/cscope.vim/plugin/cscope.vim
@@ -7,8 +7,6 @@
 "=============================================================================
 
 if !exists('g:cscope_silent')
-  ""
-  " Silent or not when run cscope command. by default it is 1.
   let g:cscope_silent = 1
 endif
 
@@ -41,7 +39,7 @@ com! -nargs=? -complete=customlist,cscope#listDirs CscopeClear call cscope#clear
 " List all the cscope databases.
 com! -nargs=0 CscopeList call cscope#list_databases()
 
-if exists('g:cscope_preload_path')
+if exists('g:cscope_preload_path') && !empty(g:cscope_preload_path)
   call cscope#preloadDB()
 endif
 
diff --git a/docs/cn/layers/cscope.md b/docs/cn/layers/cscope.md
index cd2785ea3..fa59e0091 100644
--- a/docs/cn/layers/cscope.md
+++ b/docs/cn/layers/cscope.md
@@ -9,10 +9,10 @@ lang: zh
 <!-- vim-markdown-toc GFM -->
 
 - [模块描述](#模块描述)
-- [模块特性](#模块特性)
 - [安装依赖及启用模块](#安装依赖及启用模块)
   - [安装 cscope](#安装-cscope)
   - [启用模块](#启用模块)
+- [模块选项](#模块选项)
 - [快捷键](#快捷键)
 
 <!-- vim-markdown-toc -->
@@ -23,11 +23,6 @@ lang: zh
 
 如果想要了解更多关于 cscope 和其它类似工具之间的区别，请阅读 [Comparison with Similar Tools](https://github.com/oracle/opengrok/wiki/Comparison-with-Similar-Tools)
 
-## 模块特性
-
-- 通过 cscope 为 C 和 C++ 建立索引，并提供查询功能
-- 通过 Pycscope 为 Python 建立索引，并提供查询功能
-
 ## 安装依赖及启用模块
 
 ### 安装 cscope
@@ -53,6 +48,13 @@ scoop install cscope
   name = "cscope"
 ```
 
+## 模块选项
+
+- `cscope_command`: 设置 `cscope` 可执行命令的路径。
+- `auto_update`: 启用/禁用数据库自动更新，若启用，则在保存文件时自动更新数据库。
+- `open_location`: 启用/禁用自动打开搜索结果列表。
+- `preload_path`: 设置预加载的数据量路径。
+
 ## 快捷键
 
 | 快捷键      | 功能描述                        |
diff --git a/docs/layers/cscope.md b/docs/layers/cscope.md
index 268c9b59a..c34357676 100644
--- a/docs/layers/cscope.md
+++ b/docs/layers/cscope.md
@@ -7,26 +7,21 @@ description: "cscope layer provides a smart cscope and pycscope helper for Space
 
 <!-- vim-markdown-toc GFM -->
 
-- [Description](#description)
-- [Features](#features)
+- [Intro](#intro)
 - [Install](#install)
   - [cscope](#cscope)
   - [layer](#layer)
+- [Layer options](#layer-options)
 - [Key bindings](#key-bindings)
 
 <!-- vim-markdown-toc -->
 
-## Description
+## Intro
 
 This layer provides a smart [Cscope](http://cscope.sourceforge.net/) and [PyCscope](https://github.com/portante/pycscope) helper for SpaceVim.
 
 For more info about the differences between Cscope and other similar tools, please read [Comparison with Similar Tools](https://github.com/oracle/opengrok/wiki/Comparison-with-Similar-Tools)
 
-## Features
-
-- Tag indexing and searching for C-C++ via Cscope
-- Tag indexing and searching for python via PyCscope
-
 ## Install
 
 ### cscope
@@ -50,6 +45,14 @@ To use this configuration layer, add it to your configuration file.
     name = "cscope"
 ```
 
+## Layer options
+
+- `cscope_command`: set the command or path of `cscope` executable.
+- `auto_update`: enable/disable auto udpate when saving files.
+- `open_location`: enable/disable open location list after searching.
+- `preload_path`: set the proload paths.
+
+
 ## Key bindings
 
 | Key Binding | Description                            |