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Description
rustfmt 1.4.37-stable (59eed8a2 2021-11-01)
Given a rustfmt.toml that looks like
unstable_features = <val>
imports_layout = "Vertical" # Some unstable featureFiles are formatted according to the following table
| +stable | +nightly | |
|---|---|---|
unstable_features = true |
ignores unstable features | uses unstable features |
unstable_features = false |
ignores unstable features | uses unstable features |
So the value of unstable_features does absolutely nothing except cause rustfmt to emit one of the following warnings when using a stable toochain
Warning: can't set `unstable_features = true`, unstable features are only available in nightly channel.
Warning: can't set `unstable_features = false`, unstable features are only available in nightly channel.
which is ridiculous.
Either this key should allow you to enable unstable formatting settings for stable toolchains, or it should allow you to disable unstable formatting settings for nightly toolchains. Preferably both. It currently has no effect at all.
There is a bug here.