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I can't compile the answer given here:

In LuaTex is it possible to change font/language according to the script/glyphs used?

Is it because it's old? My compiler says that \luatexdirectlua is undefined.

PS. With \directlua the error is:

! LuaTeX error luatexinterchartoks.lua:1: unexpected symbol near '%' stack traceback:
        [C]: in function 'dofile'
        [\directlua]:1: in main chunk. l.35 \directlua{dofile('luatexinterchartoks.lua')}

PS II. deleted ll. 1 and 2, now the error is:

! LuaTeX error ...ocal/texlive/2015/texmf-dist/tex/latex/base/ltluatex.lua:109:

Module luatexbase Error: Attempt to use callback.register() directly
(luatexbase)             on input line 35

stack traceback:
        [C]: in function 'error'
        ...ocal/texlive/2015/texmf-dist/tex/latex/base/ltluatex.lua:109: in function 'm
odule_error'
        ...ocal/texlive/2015/texmf-dist/tex/latex/base/ltluatex.lua:116: in function 'l
uatexbase_error'
        ...ocal/texlive/2015/texmf-dist/tex/latex/base/ltluatex.lua:291: in function 'r
egister'
        luatexinterchartoks.lua:64: in main chunk
        [C]: in function 'dofile'
        [\directlua]:1: in main chunk.
l.35 \directlua{dofile('luatexinterchartoks.lua')}
  • 1
    as documented in latex news, you should use \directlua (the original name) the latex setup no longer renames luatex commands with the luatex prefix – David Carlisle Feb 10 '16 at 18:41
  • @DavidCarlisle, I did suspect and try that, but it still wouldn't compile. – Toothrot Feb 10 '16 at 18:55
  • if you give no hints about the error that you got, then no hints on how the error may be fixed. – David Carlisle Feb 10 '16 at 18:58
  • delete the line % luatexinterchartoks.lua that is a title for the website but not legal lua – David Carlisle Feb 10 '16 at 19:14
  • that's the issue Ulrike put in a comment replace the callback register line at the end of the lua by luatexbase.add_to_callback ('token_filter', do_intertoks,"xetex chartoks emulation") then it loads without error (but doesn't work, at least in my development build of luatex, looking....) – David Carlisle Feb 10 '16 at 21:52
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Note that the code will not work at all in luatex 0.89 as the token_filter callback which was available in some beta releases of luatex has been removed with no replacement http://tug.org/pipermail/luatex/2016-February/005651.html

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