Jekyll has support for drafts. Write your post in _drafts, and then move it to _posts when you are ready to publish.
"rc file"s have no defined format, and json is a poorer choice than YAML.
I loathe ruby and still use Jekyll because I never have to touch ruby code to use it. I use it specifically _because it is dead simple_.
You're making stuff up.
That's why I prefer TOML. I wish more projects would pick it up for config. https://github.com/mojombo/toml
Why does that matter in this case?
Wacky. I guess all my YAML configuration files in C++ and Java and .NET aren't a thing.