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Stabilize span_open() and span_close(). by m-ou-se · Pull Request #86136 · rust-...
source link: https://github.com/rust-lang/rust/pull/86136
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This proposes to stabilize Group::span_open() and Group::span_close().
These are part of the proc_macro_span feature gate tracked in #54725
Most of the features gated behind proc_macro_span are about source location information (file path, line and column information), expansion information (parent()), source_text(), etc. Those are not ready for stabilizaiton. However, getting the span of the ( and ) separately instead of only of the entire (...) can be very useful in proc macros, and doesn't seem blocked on anything that all the other parts of proc_macro_span are blocked on. So, this renames the feature gate for those two functions to proc_macro_group_span and stabilizes them.
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