TOML decoding omits empty array inside table.

[spohorecky-rai]

Describe the bug
Hi! Another rust user here, attempting to parse some Cargo.tomls. I have found that empty arrays (ex. my-feature = []) as required in the features table do not appear in the parsed output.

Thank you for the tool! 🙂

Version of yq: v4.52.5
Operating system: linux_amd64
Installed via: download via github release

Input TOML
Cargo.toml:

[package]
name = "my-package"
version = "0.1.0"
edition = "2024"
authors = ["me <me@me.com>"]

[dependencies]
zerocopy = "1.0.0"
serde = { workspace = true }

[features]
my-feature = []

Command
The command you ran:

yq '.' Cargo.toml

Actual behaviour

[package]
name = "my-package"
version = "0.1.0"
edition = "2024"
authors = ["me <me@me.com>"]

[dependencies]
zerocopy = "1.0.0"
serde = { workspace = true }

Expected behaviour

[package]
name = "my-package"
version = "0.1.0"
edition = "2024"
authors = ["me <me@me.com>"]

[dependencies]
zerocopy = "1.0.0"
serde = { workspace = true }

[features]
my-feature = []

Additional context

The whole features table disappears in the case where there are only features with empty arrays, but if you include a feature with a non-empty array, the table and the item appear, but not any items with empty arrays:

Example:

[package]
name = "my-package"
version = "0.1.0"
edition = "2024"
authors = ["me <me@me.com>"]

[dependencies]
zerocopy = "1.0.0"
serde = { workspace = true }

[features]
my-other-feature = []
my-feature = ["my-other-feature"]

Results:

> yq '.' example.toml -o toml
[package]
name = "my-package"
version = "0.1.0"
edition = "2024"
authors = ["me <me@me.com>"]

[dependencies]
zerocopy = "1.0.0"
serde = { workspace = true }

[features]
my-feature = ["my-other-feature"]

I did also confirm that empty arrays at top-level are parsed, so seems to be specific to empty arrays within tables.