Lua中范围规则如何改写为长尾词？

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我在测试Lua的范围，并注意到一些额外的事情。以下代码不会打印`localMainVariable`和`functionScope`：

luafunction functionScope() print(\nIn function) print(globalMainVariable: .. globalMainVariable) if localMainVariable ~=nil then print(the) endend

我正在测试Lua的范围并注意到一些意外的事情.以下代码不会打印localMainVariable.

function functionScope() print( "\nIn function") print( "globalMainVariable: " .. globalMainVariable ) if (localMainVariable ~= nil) then print( "localMainVariable: " .. localMainVariable ) end end globalMainVariable = "Visible" local localMainVariable = "Visible" functionScope()

但是下面的代码确实打印了localMainVariable.

globalMainVariable = "Visible" local localMainVariable = "Visible" function functionScope() print( "\nIn function") print( "globalMainVariable: " .. globalMainVariable ) if (localMainVariable ~= nil) then print( "localMainVariable: " .. localMainVariable ) end end functionScope()

我知道它与声明localMainVariable的位置有关,但我认为将其设置为local会限制变量的范围.什么是实际规则？

谢谢

The scope of a local variable begins at the first statement after its
declaration and lasts until the last non-void statement of the
innermost block that includes the declaration.

Lua manual