It looks like the solution is to add another visualizers.register() to the .lua file. visualizers.register("custom", { parser = parser, handler = handler, grammar = grammar } ) visualizers.register("customb", { parser = parser2, handler = handler2, grammar = grammar2 } ) Then in .mkiv: \definetyping [CUSTOM] [\c!option=custom] \definetyping [CUSTOMB] [\c!option=customb] I'll just need to work out how to define only the changes I want to make to handler2, grammar2 without copy/paste from handler, grammar. I want to share most of the options with the original and override select options. On Sun, Jan 22, 2017, at 02:35 PM, Lorenz wrote:

I'm customizing a pretty printer and referencing the buff-imp-lua.lua and buff-imp-lua.mkiv files.

I'd like to add a conditional to the .lua file say buff-imp-custom.lua. What is a good way to pass an option from my .tex file to conditionally format with the pretty printer? I'd like to use the same buff-imp-custom.lua and .mkiv pairs of files instead of creating multiple files.

The .mkiv file defines e.g.:

\definetyping [CUSTOM1] [\c!option=custom]

I'd like to add say CUSTOM2 but pass an option that would be visible to the same buff-imp-custom.lua file. Perhaps something like this?:

\definetyping [CUSTOM2] [\c!option=custom,]

Thanks

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