The global unpack function got moved to table.unpack in Lua 5.2, and it's only available as the global if 5.2 is built with compatibility enabled (the default). Lua 5.3 does not build with 5.1 compatibility by default. Fixes #1648.
The global unpack function got moved to table.unpack in Lua 5.2, and it's only available as the global if 5.2 is built with compatibility enabled (the default). Lua 5.3 does not build with 5.1 compatibility by default. Fixes #1648.