0.692

Another week, another release!

Analysis/Autocomplete

• Improve recursive type lookups by using scoped tracking of processed types.
• Enforce recursion limits in subtyping on type packs, not just on types.
• Simplify type checking for intersections between tables and discriminants containing read-only table properties.
• Allow fields provided by __index to satisfy subtyping relationships.
• Improve the ability for the type checker to do proper generic substitution in for ... in loops.
• Fix a fragment autocomplete bug that caused fragments to be selected incorrectly in for ... in loops.
• Fix a crash caused by typeof containing an unterminated function definition: typeof(function()).
• Fix a flagging issue that may have been causing stack overflows in the previous release.

Runtime

• Support constant folding for interpolated strings.
• Fix a bug caused by the empty string being the result of constant folding.
• Add helper macros in Bytecode.h to help access data in Luau auxiliary instruction bits.
• Add support for branchless ==/~= comparisons in CodeGen (in certain cases).

Full Changelog: 0.691...0.692

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Co-authored-by: Andy Friesen afriesen@roblox.com
Co-authored-by: Annie Tang annietang@roblox.com
Co-authored-by: Ariel Weiss aaronweiss@roblox.com
Co-authored-by: Hunter Goldstein hgoldstein@roblox.com
Co-authored-by: Ilya Rezvov irezvov@roblox.com
Co-authored-by: Sora Kanosue skanosue@roblox.com
Co-authored-by: Vighnesh Vijay vvijay@roblox.com
Co-authored-by: Vyacheslav Egorov vegorov@roblox.com