Hi again,
I’m converting a few macros into Lua (LMTX), but couldn’t find some answers in
the docs:
* How translates \ifodd\realpageno ?
This doesn’t work:
if ((tex.getcount("realpageno") mod 2) == 1) then
a = 1
end
I found tex.ifodd but don’t know how to use it either.
* How to access my \def’d macros?
Is this supposed to work?:
TeX:
\def\Something{1cm}
Lua:
context.Something()
(It doesn’t in my case, but if it should, I can investigate.)
* TeX primitives
Is tex.strut and tex.par supposed to work? Or how should I access these?
* interface definitions:
Lua:
interfaces.implement {
name = "MyFun",
public = true,
--permanent = false, -- what does this mean?
arguments = { "string", "string", "string", "string" },
actions = function(reference, y, text, filename)
-- a lot
end,
}
TeX:
\MyFun{ref:some}{1cm}{bla}{hacker}
0) I don’t understand what “permanent” does and why I should maybe disable it.
(cld-mkiv, p.146)
1) The parameter y is actually supposed to be a dimension, but if I declare it
"dimen", ConTeXt says there wasn’t a number at "1cm".
Or is a measure like that not a dimension?
2) The original interface of \MyFun had two optional parameters. I couldn’t
find how to do that with interfaces.implement.
cld-mkiv, p.151 (12.7) shows how to do lists or key=value, but not single
optional args.
I’d be glad to get a few hints.
Hraban
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