It's a very big application, that requires an MVC approach for commands and their subcommands. That's why i'm looking for a language that has been battle-tested

It's a very big application, that requires an MVC approach for commands and their subcommands. That's why i'm looking for a language that has been battle-tested for complex CLI applications. This means frameworks, libs, docs and more. From what i could see, Ruby stands out in these terms. I'm not actually looking for a specific language feature, but the ecosystem.