Carl Meyer d54c19b983 [red-knot] remove CallOutcome::Cast variant (#15461) ... ## Summary Simplification follow-up to #15413. There's no need to have a dedicated `CallOutcome` variant for every known function, it's only necessary if the special-cased behavior of the known function includes emitting extra diagnostics. For `typing.cast`, there's no such need; we can use the regular `Callable` outcome variant, and update the return type according to the cast. (This is the same way we already handle `len`.) One reason to avoid proliferating unnecessary `CallOutcome` variants is that currently we have to explicitly add emitting call-binding diagnostics, for each outcome variant. So we were previously wrongly silencing any binding diagnostics on calls to `typing.cast`. Fixing this revealed a separate bug, that we were emitting a bogus error anytime more than one keyword argument mapped to a `**kwargs` parameter. So this PR also adds test and fix for that bug. ## Test Plan Existing `cast` tests pass unchanged, added new test for `**kwargs` bug.		2025-01-13 10:58:53 -08:00
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callable_instance.md	[red-knot] handle synthetic 'self' argument in call-binding diagnostics (#15362)	2025-01-09 00:36:48 -08:00
constructor.md	[red-knot] Format mdtest Python snippets more concisely (#13905)	2024-10-24 11:09:31 +00:00
function.md	[red-knot] remove CallOutcome::Cast variant (#15461)	2025-01-13 10:58:53 -08:00
invalid_syntax.md	[red-knot] add call checking (#15200)	2025-01-07 20:39:45 +00:00
union.md	Display Union of Literals as a Literal (#14993)	2025-01-08 00:58:38 +00:00