luna-core 3.2.2

Pure-Rust Lua runtime (interpreter only, zero third-party dependencies). The JIT-equipped variant lives in the `luna-jit` crate.
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-- v3.1 debug slice: debug.getlocal / setlocal argument checks and the
-- hidden locals of a for loop, whose names differ by version.
local function names(level)
  local out = {}
  local n = 1
  while true do
    local name = debug.getlocal(level + 1, n)
    if not name then break end
    if name:find("^%(for") or name == "i" or name == "k" or name == "v" then out[#out + 1] = name end
    n = n + 1
  end
  return table.concat(out, ",")
end
for i = 1, 1 do print(names(1)) end
for k, v in pairs({1}) do print(names(1)) end
print(pcall(debug.getlocal, 50, 1))
print(pcall(debug.getlocal, "x", 1))
print(pcall(debug.getlocal, 1, "x"))
print(pcall(debug.getlocal))
print(pcall(debug.setlocal, 50, 1, 1))
print(pcall(debug.setlocal, 1, 1))
print(pcall(debug.setlocal, "x", 1, 1))
local function set()
  local p, q = 1, 2
  local a, b = debug.setlocal(1, 1, 10), debug.setlocal(1, 9, 0)
  return p, q, a, b
end
print(set())