[Dev-luatex] start_run not working

[Elie Roux]

I tried the following code:

\directlua0{
local function simpleone()
    return "I'm number 1"
end

local function simpletwo()
    texio.write_nl("I'm number 1")
end

callback.register("start_run",simpletwo)
}

and got no result neither by replacing simpletwo by simpleone in the 
callback. Is it normal? The simpletwo function works fine with the 
callbacks "stop_run".
-- 
Elie