add load cscope.out file

Author: Wizard Tai

_vimrc

@@ -11,7 +11,18 @@ set hls
 
 "set foldlevel=99
 
-set tags=./tags;,./gotags;,./.tags;,./.gotags;
+set tags=tags;/
+
+function! LoadCscope()
+  let db = findfile("cscope.out", ".;")
+  if (!empty(db))
+    let path = strpart(db, 0, match(db, "/cscope.out$"))
+    set nocscopeverbose " suppress 'duplicate connection' error
+    exe "cs add " . db . " " . path
+    set cscopeverbose
+  endif
+endfunction
+au BufEnter /* call LoadCscope()
 
 nmap <F8> :TagbarToggle<CR>