Commented lines in a collection are deleted

[casedami]

Describe the bug

In a multi line collection, if some lines are comments then they get deleted after format.

let a = {
  my_key: "my_key"
  # a comment
  my_other_key: "my_other_key"
}

# becomes

let a = {
  my_key: "my_key"
  my_other_key: "my_other_key"
}

Steps to reproduce

1. run on nufmt 0.1.0

Expected behavior

The comments should be preserved

Environment

Please run rustc --version and paste the result.

[user@system:~]$ rustc --version
rustc 1.95.0 (59807616e 2026-04-14)

If using Nix please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
output here

---

Notify maintainers

[casedami]

After updating, the above example now formats correctly but the following example still results in deletion:

let a = {
  my_key: "my_key"
  my_other_key: "my_other_key"
  # my comment
}

# becomes

let a = {
  my_key: "my_key"
  my_other_key: "my_other_key"
}

[jefft]

After updating, the above example now formats correctly but the following example still results in deletion:

I think you've not updated correctly. Commit b96d2e2 definitely fixed it:

~/nushell/nufmt$ target/debug/nufmt --stdin < /tmp/test.nu 
let a = {
    my_key: "my_key"
    my_other_key: "my_other_key"
    # my comment
}

You'd need to get nufmt from git e.g. with cargo install --git https://github.com/nushell/nufmt