ladybird/Documentation/VimConfiguration.md

Vim Project Configuration

Vim can be configured to use the YouCompleteMe plugin to provide code-completion.

Once you've installed the YouCompleteMe plugin you should whitelist the configuration file that is part of the ladybird repository. You can do this by adding the following option to your .vimrc file:

let g:ycm_extra_conf_globlist = ['~/ladybird/.ycm_extra_conf.py']