Return invalid code when no `,` in nuon

[Rignchen]

Describe the bug

Return invalid code when no , in nuon

nuon doesn't require you to have , to split variables, whitespace are just as valid, since nuon is natively supported by nushell it should also be supported by any nushell formatter

Steps To Reproduce

1. get some nuon code with | to nuon
2. remove a one of the comma
3. try to format it with nufmt

nu -c ('{foobar: [[foo, bar]; [1, 2], [3, 4]], foobar2: [[foo, bar]; [1, 2], [3, 4]]}' | nufmt --stdin)

nu -c ('{foobar: [[foo, bar]; [1, 2], [3, 4]] foobar2: [[foo, bar]; [1, 2], [3, 4]]}' | nufmt --stdin)

Expected behavior

the outputed code should be valid nushell

Environment

• rustc 1.91.1 (ed61e7d7e 2025-11-07)

[user@system:~]$ rustc --version
output here

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

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Notify maintainers

[fdncred]

nufmt is pre-alpha and shouldn't be used. However, we'd accept PRs to make it better.