我是 emacs 的新手，我尝试使用 cedit 来完成代码。我使用基于http://alexott.net/en/writings/emacs-devenv/EmacsCedet.html的简单设置
.emacs 看起来像这样：
;; cedit
(semantic-mode 1)
(require 'semantic/ia)
(require 'semantic/bovine/gcc)
;;(require 'semantic/bovine/clang)
;;(semantic-clang-active)
(setq-mode-local c-mode semanticdb-find-default-throttle
'(project unloaded system recursive))
;;(semantic-idle-summary-mode )
;; if you want to enable support for gnu global
(semanticdb-enable-gnu-global-databases 'c-mode)
(semanticdb-enable-gnu-global-databases 'c++-mode)
;;(semantic-reset-system-include 'c-mode)
;;(semantic-reset-system-include 'c++-mode)
(defun my-c-mode-cedet-hook ()
(local-set-key "." 'semantic-complete-self-insert)
(local-set-key ">" 'semantic-complete-self-insert))
(add-hook 'c-mode-common-hook 'my-c-mode-cedet-hook)
(add-hook 'c++-mode-common-hook 'my-c-mode-cedet-hook)
(defun my-c-mode-cedet-hook ()
(add-to-list 'ac-sources 'ac-source-gtags)
(add-to-list 'ac-sources 'ac-source-semantic)
(add-to-list 'ac-sources 'ac-source-semantic-raw))
(add-hook 'c-mode-common-hook 'my-c-mode-cedet-hook)
(global-ede-mode t)
在我用这个简单的 c++ 文件测试之后：
#include <string>
#include <map>
#include <stdio.h>
#include <iostream>
using namespace std;
int main() {
string s;
map<int,int>a;
}
我发现它可以完成关键字，如包含或头文件。当我尝试完成 s 的方法时，它失败了。当我使用命令时semantic-ia-complete-symbol
它只是报告Cannot find types for string s
谁能告诉我为什么它不能工作？非常感谢！