dtolnay / dtolnay/proc-macro2

unsupported proc macro punctuation character '_' from v1.0.69 -> v1.0.89

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Rust
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Description

I was trying to update this subdirectory
https://github.com/pascalkuthe/OpenVAF/tree/master/sourcegen using cargo update... but for some reason what was allowed on 1.0.69 is now simply not allowed? I can't tell why it's detecting a rogue _. Is this a proc_macro2 bug?

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