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On 16/02/2021 06:57, Hisham wrote:
On Sun, 14 Feb 2021 at 12:36, Lorenzo Donati <>

Hi folks!

Trying to spare a little time here.

I'm writing a little library for my stuff which will make use of Lua 5.3
table.move but should also be usable with Lua 5.1.

I could write an ad-hoc Lua 5.1-compatible fallback function, but I'd
prefer not to waste time reinventing the wheel (and thoroughly testing
it with all corner cases)!

So I thought that maybe a /well-tested/ /pure-Lua/ replacement for
table.move has already been posted somewhere that I could copy-paste
into my code.

I don't care if it is a bit slow (as long as it is not utterly
wasteful), but it should be well tested and/or "peer-reviewed" and
should replicate table.move semantics in the details (I wouldn't want
unexpected differences between Lua 5.3 and Lua 5.1 scripts).

Any pointers appreciated.

What you're looking for is the compat-5.3 library:

It includes based implementations of many compatibility functions for
performance but many functions (including table.move) have pure-Lua
fallbacks. If you're using LuaRocks, including compat53 as a dependency and
a `require "compat53"` in your project is sufficient (it is a no-op in Lua
5.3+), no need to resort to copy-pasting.

-- Hisham

Thank you Hisham!

No, I don't use luarocks.

I have a very personalized "install" of Lua (just compiled from PUC source plus manually installed libraries) that can be copied and carried on an external HDD/SSD/pendrive and run from there (under Windows).

I'll look and see if I can easily take the code from the link you provided.

Thanks again!

-- Lorenzo