`w`: implement --short option #212

Job	Run time
cargo fmt --all -- --check	15s
cargo clippy -- -D warnings (ubuntu-latest)	14s
cargo clippy -- -D warnings (macOS-latest)	1m 5s
cargo check (ubuntu-latest)	13s
cargo clippy -- -D warnings (windows-latest)	1m 22s
Code Coverage (ubuntu-latest, unix)	41s
cargo check (macOS-latest)	25s
cargo test (ubuntu-latest)	29s
Code Coverage (macos-latest, macos)	1m 10s
cargo check (windows-latest)	1m 20s
cargo test (macOS-latest)	1m 0s
Code Coverage (windows-latest, windows)	47s
cargo test (windows-latest)	26s
	9m 27s

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