Feature request: floor division operator // (Lua 5.3+)

[timkrueger1993-lab]

Summary

The floor division operator // (introduced in Lua 5.3, part of Lua 5.4) is rejected by the parser:

var state = LuaState.Create();
state.Load("local a = 7 // 2\nreturn a", "chunk");
// Lua.LuaParseException: chunk:1: unexpected symbol near '/'

Reproduced on 0.5.5 and 0.5.6.

I realize the README states Lua 5.2 as the implemented level, so strictly this is a feature request rather than a bug — filing it as the concrete, operator-level slice of #25 (Lua 5.3/5.4 support), since // is one of the two syntax-level gaps we actually hit in real application code (the other being the bitwise operators, filed separately).

Workaround

math.floor(a / b) — works, but scripts written against the Lua 5.4 reference fail to load with a message that does not hint at the version gap.

Context

We embed LuaCSharp as the scripting engine of a server runtime (Limes) whose applications are written against the Lua 5.4 manual; // was the first operator real application code tripped over. If there is interest in taking #25 forward, we would gladly test prereleases against our conformance suite.