This is Lua 5.3.4, released on 12 Jan 2017.

For installation instructions, license details, and
further information about Lua, see doc/readme.html.

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Language:C 50.1%Language:HTML 32.4%Language:Lua 13.6%Language:TeX 1.3%Language:Makefile 1.2%Language:C++ 0.8%Language:PostScript 0.3%Language:Shell 0.2%Language:CSS 0.1%Language:Batchfile 0.0%