[seanyeh]

git supports XDG - its config lives in `$XDG_CONFIG_HOME/git/config`. Though a lot of people still use the older location of ~/.gitconfig

[pie_flavor]

It will load config from there, if you manually create it there. If on a freshly initialized system you say `git config --global push.autoSetupRemote true`, it will write it to .gitconfig; it will not use .config unprompted.

[brewmarche]

As does vim (e.g. $XDG_CONFIG_HOME/vim/vimrc and $XDG_CONFIG_HOME/vim/pack/...)