Initial support for fn expressions. (#7893)

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Support for `fn` expressions with the same feature set as `fn`
declarations. In particular, there is no support for captures,
positional parameters, `=>` bodies, or `auto` return types.

Note that this results in two parse nodes for each `=>` token. That's a
bug, but it matches the behavior of function declarations, and will be
fixed in a follow-up change.

Assisted-by: Gemini via Antigravity

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Richard Smith authored and GitHub committed 2026-10-06 20:12:58 +00:00

1 parent 66bf1415ac

commit 1b0a5709e6

24 files changed

+2015 -308

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