I am trying to add lua support to grub2 and having a devil of a time finding info on how to do that.
The links provided in the answer to (String manipulation in Grub2) no longer have any lua extensions for grub2 (in fact I think only theme code is there, and very old at that).
I found info for elua but the download link it provided here (http://www.eluaproject.net/doc/v0.9/en_tut_bootpc.html) has no ELF binary.
I have downloaded the latest lua 5.3.3 and built it on Linux, but can't find how to create a grub2 .mod file for lua.
I found a really old grub ISO file that included lua support, but if I try to use the .mod files from it in a newer grub I get "license errors", even if I don't reference those modules.
I would greatly appreciate any references or pointers you may have to help me get this accomplished.