Auto merge of #5429 - matklad:dashes-test, r=matklad
Auto merge of #5429 - matklad:dashes-test, r=matklad

Extend dashes forwarding test

Closes https://github.com/rust-lang/cargo/issues/2213

Looks like this was fixed when we've transitioned to clap!

tshepang/cargo,nipunn1313/cargo,rust-lang/cargo,vojtechkral/cargo,rustyhorde/cargo,nipunn1313/cargo,eminence/cargo,tshepang/cargo,tsurai/cargo,tshepang/cargo,vojtechkral/cargo,rust-lang/cargo,rustyhorde/cargo,nipunn1313/cargo,vojtechkral/cargo,eminence/cargo,eminence/cargo,rustyhorde/cargo,rust-lang/cargo,nipunn1313/cargo,tshepang/cargo,tsurai/cargo,eminence/cargo,rustyhorde/cargo,vojtechkral/cargo,tsurai/cargo,rust-lang/cargo,tsurai/cargo,tsurai/cargo