Re: Question about Lua history

[Luiz Henrique de Figueiredo <lhf@...>]

> This is a simple question I ask myself every time I see some Lua 4 code: why
> did it require a prefix '%' for upvalues? Was it an implementation
> constraint? A way to mark stuff that were compiled very inefficiently?

Read section 6.6 in the HOPL paper.