Eris for Lua 5.3

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Eris for Lua 5.3

[SirVer]

Widelands would switch to Lua 5.3 as soon as you deem it stable enough.

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I've found an issue related to persisted upvalues, can't quite pin it down yet. Not sure if the references get mangled when writing, or something messes up while loading.

I'll work on it as time permits; may have to come up with a different way to manage upvalue persistence.

If someone else wants to bang their head against this, too, I'd be happy for input ;-)

[daurnimator]

👍

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All right, I finally had the time to dig into the code a again, and I finally found the upvalue bug. I think, anyway. At least everything looks to be working fine for me now.

If you'd like to give it a try, check out the master-lua5.3 branch.

Important: keep in mind that the save format between 5.2 and 5.3 is not compatible, amongst other things because of the new integer type in 5.3.

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All right, I've had it running in the wild for a while now, and haven't gotten any reports of it breaking yet, so I'm somewhat confident it's properly working now!