Tracking issue for `custom_attribute` features

[aturon]

Part of RFC 572. This issue tracks stabilization/deprecation.

[brson]

Is this feature ever going to be stabilized?

It is currently used by Rocket: rwf2/Rocket#19 (comment). Does Rocket have alternatives?

[steveklabnik]

Isn't this part of macros 2.0? that is #[proc_macro_attribute] https://github.com/rust-lang/rfcs/blob/master/text/1566-proc-macros.md

[beamspease]

Just found this ticket as serde's main documentation says to use it...
https://serde.rs/enum-representations.html

[thijsc]

It seems like serde relies on this feature a lot, see: https://serde.rs/attributes.html

Is the plan to stabilize this?