Re: [Dev-luatex] require "lfs" doesn't work on LuajitTeX

Hi Luigi,

H30/12/27 8:15、luigi scarso のメール:

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On Wed, Dec 26, 2018 at 12:02 PM ARATA Mizuki wrote: Hi,

Even though LuajitTeX has lfs as a built-in library, trying to load it via `require` doesn't work. (LuaTeX with Lua 5.2/5.3 doesn't have this problem)

This is because the field package.loaded["lfs"] is not set during initialization.

To fix this, change Luas_open to set the module (returned by the module loader) to the package.loaded table, which is available as _LOADED on the registry table.

Also, zlib suffers from a similar problem, both on LuaTeX and LuajitTeX.

Here is a proposed patch to fix these problems: ...

-- Mizuki

require here is not strictly needed, given that the code below work. We will check the code above, but lfs has some security implications and zlib is a bit weird to load.

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-- luigi

I know it's not needed to do `require "lfs"` on LuaTeX, but people *does* use lfs via require, because it's the standard way to load lfs. A couple of example that does `require "lfs"`: luamplib: https://github.com/lualatex/luamplib/search?q=lfs&unscoped_q=lfs A code snippet on stackexchange: https://tex.stackexchange.com/questions/48179/what-is-the-correct-way-to-del... So `require "lfs"` should be valid on LuajitTeX, too. -- Mizuki