YCM是一个vim的代码自动补全插件，而且还可以提示语法错误，提示错误行号。
安装教程
Ubuntu Linux x64
These instructions (using install.py) are the quickest way to install YouCompleteMe, however they may not work for everyone. If the following instructions don't work for you, check out the full installation guide.
Make sure you have Vim 7.4.1578 with Python 2 or Python 3 support. Ubuntu 16.04 and later have a Vim that's recent enough. You can see the version of Vim installed by running vim. If the version is too old, you may need to compile Vim from source (don't worry, it's easy).
--version
Install YouCompleteMe with Vundle.
Remember: YCM is a plugin with a compiled component. If you update YCM using Vundle and the ycm_core library APIs have changed (happens rarely), YCM will notify you to recompile it. You should then rerun the install process.
Install development tools and CMake:
sudo apt-get install build-essential cmake
Make sure you have Python headers installed:
sudo apt-get install python-dev python3-dev
Compiling YCM with semantic support for C-family languages:
cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer
Compiling YCM without semantic support for C-family languages:
cd ~/.vim/bundle/YouCompleteMe
./install.py
The following additional language support options are available:
- C# support: install Mono and add
--omnisharp-completerwhen calling./install.py. - Go support: install Go and add
--gocode-completerwhen calling./install.py. - TypeScript support: install Node.js and npm then install the TypeScript SDK with
npm install -g typescript. - JavaScript support: install Node.js and npm and add
--tern-completerwhen calling./install.py. - Rust support: install Rust and add
--racer-completerwhen calling./install.py.
To simply compile with everything enabled, there's a --all flag. So, to install with all language features, ensure xbuild, go,tsserver, node, npm, rustc, and cargo tools are installed and in your PATH, then simply run:
cd ~/.vim/bundle/YouCompleteMe
./install.py --all
That's it. You're done. Refer to the User Guide section on how to use YCM. Don't forget that if you want the C-family semantic completion engine to work, you will need to provide the compilation flags for your project to YCM. It's all in the User Guide.
YCM comes with sane defaults for its options, but you still may want to take a look at what's available for configuration. There are a few interesting options that are conservatively turned off by default that you may want to turn on.
附官网跳转地址：https://github.com/Valloric/YouCompleteMe#ubuntu-linux-x64