Can't pass an empty string flag

[oclif]

Can't pass an empty string flag

[dkundel]

They currently don't support one but it's common behavior. Example from Node.js: https://nodejs.org/api/cli.html#cli_inspect_host_port

In yargs the behavior is the following for string flags:

• flag not passed => default value if available or undefined
• flag passed but no value => '' aka empty string
• flag passed with value => set to value

[xavdid]

This seems like intended behavior, no? If it's a boolean flag, it should have no value. if it's a string flag, it should have a value. I'm not sure they support a flag that acts as both.