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? kleene macro operator is unstable #456

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ehuss opened this issue Oct 21, 2018 · 1 comment
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? kleene macro operator is unstable #456

ehuss opened this issue Oct 21, 2018 · 1 comment

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@ehuss
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ehuss commented Oct 21, 2018

As noted in PR #424, the ? operator is still unstable. I'm wondering if it should stay (since unstable things usually aren't document). It looks like it may get stabilized soonish, so maybe it doesn't matter? (tracking issue: rust-lang/rust#48075)

I've written the grammar for macros which includes this, but I'm unsure if I should continue the trend of keeping this unstable syntax.
@ehuss ehuss mentioned this issue Oct 23, 2018
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ehuss commented Nov 29, 2018

This is now stabilized in rust-lang/rust#56245.

@ehuss ehuss closed this as completed Nov 29, 2018
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