Tracking Issue for `#![feature(pub_macro_rules)]`

[petrochenkov]

This is a tracking issue for

    pub macro_rules! foo {
        ...
    }

pub (or pub(...)) here makes the macro use regular module scoping (with specified visibility) used by all other non-macro items instead of the traditional macro_rules scoping.

Implemented in #78166.

Implementation History:

• Implemented in Support pub on macro_rules #78166 (merged in Support pub on macro_rules #82296)
• Reverted in Revert "Rollup merge of #82296 - spastorino:pubrules, r=nikomatsakis" #83713 (due to using pub macro_rules outside of the crate ICEs with Missing span for DefIndex(3) #83641)

[CAD97]

Apparently this feature is removed from the current version of the compiler; this tracking issue should probably be closed and/or updated with the current status of item-scoped macro_rules!.

[est31]

FTR the feature was originally implemented in #78166, which got rebased and merged in #82296, and then removed/reverted in #83713 due to #83641.