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Special-case *$... as equivalent to $.... #101

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Special-case *$... as equivalent to $....

This is non-ambiguous: a $... only "makes "sense" in a repeated context, and a Starred() ast node is not a repeated context. So we're free to interpret it in some other, magical way instead.

Since we actually specifically want to support a syntax like **$..., *$... should match its semantics.

This is non-ambiguous: a `$...` only "makes "sense" in a repeated context, and a `Starred()` ast node is not a repeated context. So we're free to interpret it in some other, magical way instead.

Since we actually specifically want to support a syntax like `**$...`, `*$...` should match its semantics.

PiperOrigin-RevId: 568317031
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