deps(deps): bump lua from 1.0.0-rc.1 to 1.0.0-rc.2

[dependabot]

Bumps lua from 1.0.0-rc.1 to 1.0.0-rc.2.

Release notes

Sourced from lua's releases.

v1.0.0-rc.2

The third release candidate for 1.0.0. Builds on rc.1 with a major table-storage performance win, two non-standard os epoch helpers, and a batch of protected-call / error-value correctness fixes that align pcall / xpcall and Lua.call_function/3 with Lua 5.3 §6.1. The public API is unchanged from rc.1.

Performance

• Split-storage tables (Erlang :array + map) — dense 1..n integer keys route to an :array for O(1) functional read/write; other key types stay in the hash map. Table-heavy workloads improve 28–37% at n=1000 (Build −36%, Iterate/Sum −36%, Map+Reduce −37%, Sort −28%) and now beat Luerl on Build/Iterate/Map+Reduce (#328).

Added

• os.time_ms() / os.time_us() — non-standard epoch helpers for sub-second precision (os.time() unchanged). The os.clock() origin is now seeded in install/1 rather than lazily, so elapsed time measures from a stable startup point (#340).

Fixed

• deflua/2 guarded heads registered under :when instead of their real name, making them uncallable from Lua (#344).
• Lua.call_function/3 returns the terse Lua error value, not the terminal render (#336).
• pcall / xpcall pass the raised value through verbatim and add the §6.1 source:line: prefix (#334).
• Protected calls no longer roll back heap effects on error (#331).

Known issues

• Deep recursion remains ~25% slower than rc.0 (carried forward from rc.1; per-call depth bookkeeping). To be addressed before 1.0.0 final.

Full changelog: https://github.com/tv-labs/lua/blob/v1.0.0-rc.2/CHANGELOG.md

Changelog

Sourced from lua's changelog.

[v1.0.0-rc.2] - 2026-06-10

The third release candidate for 1.0.0. It builds on rc.1 with a major table-storage performance win, two non-standard os epoch helpers, and a batch of protected-call and error-value correctness fixes that bring pcall / xpcall and Lua.call_function/3 in line with Lua 5.3 §6.1. The public API is unchanged from rc.1.

Performance

• Split-storage tables (Erlang :array + map) — dense positive-integer keys (1..n) now route to an Erlang :array for O(1) functional read/write and dense iteration ordering, while strings, sparse/non-positive integers, and other key types stay in the hash map with the existing iteration bookkeeping (#328). String-keyed reads (globals, fields, metatable lookups) are unchanged. Table-heavy workloads improve 28–37% at n=1000 (Apple M4, lua chunk path): Build −36%, Iterate/Sum −36%, Map+Reduce −37%, Sort −28%. Build, Iterate, and Map+Reduce now beat Luerl; Sort closes most of the gap.

Added

• os.time_ms() and os.time_us() — non-standard extensions returning the current epoch in milliseconds / microseconds, for programs that need sub-second precision (os.time() is unchanged and still returns whole seconds). Both are current-time-only and are documented as extensions not present in PUC-Lua (#340).
• The os.clock() monotonic origin is now seeded in install/1 rather than lazily on the first call, so elapsed time is measured from a stable startup point instead of drifting to whenever a program first happened to call os.clock() (#340).

Fixed

• deflua/2 guarded heads register under their real name (#344). A guarded head with no state argument (deflua clamp(a) when is_integer(a)) was registered under the name :when instead of clamp, making it uncallable from Lua (calling it raised an undefined-function error). The macro now unwraps the :when AST node to reach the real name, matching the deflua/3 (state-arg) variant, which was never affected.
• Lua.call_function/3 returns the terse Lua error value, not the terminal render (#336). Its {:error, reason, _} previously surfaced the terminal-formatted error string — ANSI escape codes, the at <source>:<line>: header, the Suggestion: block, stack-trace frames, and a doubled Lua runtime error: … runtime error: prefix — where a programmatic value was expected. reason is now exactly what pcall hands back (§6.1): the source:line:-prefixed message for string errors, and the raw value (table/number/nil/false) passed through verbatim for non-string error

... (truncated)

Commits

• 32a9ef7 chore(release): 1.0.0-rc.2 (#345)
• 4ef8377 fix(api): deflua/2 preserves function name for guarded heads (#344)
• 49ce267 feat(os): seed os.clock origin at install, add os.time_ms/os.time_us (#340)
• 1263943 fix(vm): return terse Lua error value from call_function, not terminal render...
• 44b876f test(vm): silence unused variable warning in pcall error-value test (#338)
• effcb29 chore(website): refresh OG image layout (#339)
• 9c3f2b2 fix(vm): pass raw error values through pcall and add §6.1 position prefix (#335)
• a558050 fix(vm): keep heap effects across protected-call error unwinding (#333)
• 50f7398 feat: add posthog (#332)
• 57c4618 chore: use elixir 1.20 in CI (#329)
• Additional commits viewable in compare view

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