cargo completion make `--` argument not working.

cargo clippy --workspace -- -D warnings -D clippy::unwrap_used

will produced like:

error: unexpected argument '-' found

Usage: cargo.exe check [OPTIONS]

cargo test -- --nocapture

will produced like:

error: unexpected argument '--nocapture' found

  tip: a similar argument exists: '--features'
  tip: to pass '--nocapture' as a value, use '-- --nocapture'

Usage: cargo.exe test --features <FEATURES> <TESTNAME> [-- [ARGS]...]

For more information, try '--help'.

I must do the work like ^cargo test -- --nocapture , How can I fix this?

Start by reproducing the reported commands, cargo clippy --workspace -- -D warnings -D clippy::unwrap_used and cargo test -- --nocapture, through the affected completion. Trace how arguments after -- are emitted, then verify that the completed commands preserve the separator and pass the remaining arguments through unchanged.