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debug: preserve call-backed functable environments - #111
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Prefer a functor's call field over its __call dispatcher when reading or setting its environment. This keeps shared dispatchers unchanged and applies the environment to the function that executes the wrapped code. Backport to the maintained stdlib release branch, adapting the implementation to lib/std/debug.lua and the regression tests to specs/debug_spec.yaml. Current stdlib master delegates these functions to std.normalize. (cherry picked from commit 8b877b249c6f2353cae570647a17fc25464d73c5)
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Restore the
callfield's precedence over a functable's__calldispatcher in the release branch's environment functions. Changing only a shared dispatcher leaves the wrapped function in its old environment; this restores the behavior from before the environment-function backport.This backports commit
8b877b249c6f2353cae570647a17fc25464d73c5from lua-stdlib/normalize#2 usinggit cherry-pick -x, adapting the implementation and regression tests to the release branch's file layout. That canonical PR is still pending. This PR targets the maintainedreleasebranch rather thanmaster, which delegates these functions to normalize.The two added subprocess regression examples fail on the base revision and pass on Lua 5.1 through 5.5 and LuaJIT. Direct environment and module-loading checks also pass on all six. The wider debug specs retain baseline failures, and the complete suite aborts on existing spec-generation errors, so this is not a green full-suite result.