0.566

Analysis Changes

• DeprecatedApi lint can report some issues without type inference information
• Marked table.getn/foreach/foreachi as deprecated (RFC: Deprecate table.getn/foreach/foreachi)

Runtime Changes

• With -O2 optimization level, we now optimize builtin calls based on known argument/return count.
  Note that this change can be observable if getfenv/setfenv is used to substitute a builtin, especially if arity is different.
  Fastcall heavy tests show a 1-2% improvement.

Other changes

• Fixed incorrect lexeme generated for string parts in the middle of an interpolated string (Fixes #744)
• Luau can now be built with clang-cl (Fixes #736)
• Fixed performance of autocomplete requests when suggestions have large intersection types (Solves https://github.com/Roblox/luau/discussions/847)

For extra notes about internal development, you can read #853

0.565

What's Changed

• docs: update readme installation guide by @bmg817 in #792
• Improve stack consumption when typechecking nested method calls
• Remove redundant jump instructions in code using conditional break and continue statements.

New Contributors

• @bmg817 made their first contribution in #792

0.564

What's Changed

• Sync to upstream/release/564 by @vegorov-rbx in #841

0.563

What's Changed

• Fix comments on jump instructions with AUX by @EpixScripts in #808
• Fix a bug where reading a property from an unsealed table caused inference to improperly infer the existence of that property.
• Fix unknown global cannot be identified when using type and typeof #827

New Contributors

• @EpixScripts made their first contribution in #808

0.562

Language Changes

A new language feature - string interpolation, is now stable and available for use in default configuration.
Read more about it in the announcement.

Analysis Changes

• Fixed rare use-after-free in analysis during table unification

For extra notes about internal development, you can read #828

0.561

What's Changed

• Fix a potential debugger crash by adding checks for invalid stack index values

0.560

Autocomplete Changes

• Additional information is included in Scope for type alias name locations and names of imported modules
• Improved suggestions in 'for' and 'while' loop headers

Analysis Changes

• String match functions return types are now optional strings and numbers because match is not guaranteed at runtime

Runtime Changes

• Fix lua_*upvalue() when upvalue names aren't in debug info by @HaroldCindy in #787

Other Changes

• Fixed build issue on gcc 11 and up (Fixes #806)

0.559

Autocomplete Changes

• Fix autocompletion of if-then-else expressions
• Pass string content to autocomplete callback by @JohnnyMorganz in #800
• Attach definition location to TableType by @JohnnyMorganz in #801

Runtime Changes

• Fix a potential crash surrounding improper use of %* in a string format specifier
• Improved error handling for string interpolation with too many arguments

Other Changes

• All Python scripts now invoke Python via python3 rather than python

0.558

Analysis changes

• Fixed garbage data in module scopes when type graph is not retained

Runtime changes

• LOP_MOVE with the same source and target registers is no longer
  generated (Fixes #793)

0.557

Analysis changes

• Fixed unions of nil types displaying as ?
• Internal normalization now handles class types which can make previously failing (incorrectly) sub-typing checks to succeed