{
"$type": "site.standard.document",
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"path": "/t/crowdsourcing-request-what-syntax-changes-that-will-affect-the-ast-are-currently-in-flight/24361#post_2",
"publishedAt": "2026-05-29T19:55:54.000Z",
"site": "https://internals.rust-lang.org",
"tags": [
"Tracking Issue for Field Projections · Issue #145383 · rust-lang/rust · GitHub",
"Tracking Issue for pattern types · Issue #123646 · rust-lang/rust · GitHub"
],
"textContent": "Field projections (Tracking Issue for Field Projections · Issue #145383 · rust-lang/rust · GitHub) are likely to need new syntax, although I don't think the specific new syntax has been decided on yet.\n\nPattern types (Tracking Issue for pattern types · Issue #123646 · rust-lang/rust · GitHub) are a new sort of type which will need some syntax. For the time being (while the feature is being developed), they're using a macro-like syntax, but the macro will need to expand to something and it's plausible that a more built-in syntax will need to be adopted.",
"title": "Crowdsourcing request: What syntax changes that will affect the AST are currently in flight?"
}