想要自定义Karabiner-Elements的Complex Modification，但却发现完全没有办法：

只能Import from browser，然而别人写的我必然用的有问题。后来发现，这个repo是开源的：https://github.com/pqrs-org/KE-complex_modifications

我们的目标：

• Cmd + Tab -> Ctrl + Tab
• Alt + Tab -> Cmd + Tab
• Ctrl + Tab -> Alt + Tab

根据repo上所说的，clone下来之后，整个过程分为4步：

1. Put a .rb (or .erb) template file into src/json. (Or put a .json file into public/json directly.)

2. (Optional) Put extra description file into public/extra_descriptions.

3. Add the following json into public/groups.json > files.

   {
     "path": "json/your_awesome_configuration.json", // required
     "extra_description_path": "extra_descriptions/your_awesome_configuration.html" // optional
   },

4. Run make command on Terminal.
   If you've put .rb (or .erb) source file into src/json, formatted json file will be auto generated in the public/json/your_awesome_configuration.json.

   make

遂这样搞了一把，看着别人的写法，照葫芦画瓢整出了一个json文件：https://github.com/JeffersonQin/KE-complex_modifications/blob/master/public/json/ctrl_option_command_tab_change.json

接下来，跑一下make, make server看一下效果，发现一切正常。由于Karabiner-Elements不允许http协议，所以更据提示:

cp public/json/your_awesome_configuration.json ~/.config/karabiner/assets/complex_modifications

即可。最后提交一下PR来公开。