Peter's Awesome Lua with the Core functionality we care about
TL:DR ; results
DukTape is a C engine for executing ECMAScript 5.1ish. (… or JavaScript or whatever we’re calling it this week) Notably, it’s distributed as a trio of source files to ease integration.
Lua is a C script engine (for the Lua languages) and is not distributed in such a nice way. So I spent a few hours preparing a (Python) script to repack Lua 5.3.3 into a single header.