That line of the readme is a bit confusing. It took navigating the git blame history to find 9cd5712 and reviewing the commit in context for me to understand that it is saying a file named ~/.foo can be loaded as YAML when viper.SetConfigType("yaml") is used.

I was looking for a way to support the following file path possibilities:

• /etc/foo/config.yaml
• $HOME/.foo
• $HOME/.foo.yaml
• ./.foo
• ./.foo.yaml

It's still not clear to me if I can support that list.