Shorthand lambda patches for lua 5.4 and 5.1

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Subject: Shorthand lambda patches for lua 5.4 and 5.1
From: Flemming Madsen <lua@...>
Date: 2021年3月12日 08:44:56 +0100

I just made submissions for these on http://lua-users.org/wiki/LuaPowerPatches.

Search for "Shorthand lambdas"

Basically, the construction

|arglist| _expression_

is shorthand for

function(arglist) return _expression_ end

I have an accompanying patch for luacheck (https://github.com/mpeterv/luacheck), if anybody needs that.

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