[luatex] lua-inputenc

[Hans Hagen]

Elie Roux wrote:
> Hans Hagen a écrit :
>> no, because in many cases one writes files directly via the lua io 
>> library; i remember that we considered a callback but decided that it 
>> would become too messy; there is in tex detailed control over the kin 
>> dof file that is read (tex files vs font files for instance) but 
>> writing can be anything.
> 
> For my particular case, I think a callback would still be justified: if 
> I'm writing this package, it's for people who want to process their old 
> documents through LuaTeX, if they start to use the lua io library, then 
> they should definitely write everything in UTF-8. In the case of 
> packages like mine, it would be very useful to be able to process the 
> output buffer of TeX... For example a process_tex_output_buffer would be 
> good I think...

in that case, when some user opens a file for writing, you also need 
ways to turn off that processing which adds another layer of management 
there

>> actually, since you already do something with the input, i suppose 
>> that you could easilly do it there: you can check if an aux file is 
>> opened (look at suffix), then set some flag, and treat its data in a 
>> special way
> 
> The solution I have now is to register a function in the 
> process_input_buffer callback, but I don't think I can trigger changes 
> in my function (like for example when it reads an aux file), can I? Do I 
> have to register functions in the readers callbacks to do so?

in the open_read_file callback you return a reader funtion that reads a 
line of code, so in the case of an aux file, you just return a different 
  reader function (i.e. one that proprocesses your code)

Hans

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