{
  "$type": "site.standard.document",
  "bskyPostRef": {
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    "uri": "at://did:plc:ivbknywyskln22er3nkssdhl/app.bsky.feed.post/3mo5mmoc4e542"
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  "path": "/t/why-cant-pat-param-be-followed-by-a-colon-in-macro-rules/24394#post_3",
  "publishedAt": "2026-06-13T04:42:34.000Z",
  "site": "https://internals.rust-lang.org",
  "textContent": "My suspicion is it's a holdover from when `pat_param` was split off from `pat`, which itself (at the time) needed to handle type ascription.",
  "title": "Why can't pat_param be followed by a colon in macro_rules?"
}