[NTG-context] callback.register

Wolfgang Werners-Lucchini wwl at musensturm.de
Fri Apr 9 22:48:35 CEST 2010


> there are two user hooks:
> 
> tasks.appendaction("processors","before","modules.mine.whatever_a")
> tasks.appendaction("processors","after","modules.mine.whatever_b")
> -----------------------------------------

My example looks now

\starttext
\startluacode
function MyPreLB(head,gc)
  texio.write("\n")
  for n in node.traverse(head) do
    if node.type(n.id) == "glyph" then
      texio.write(string.char(n.char))
    elseif node.type(n.id) == "glue" then
      texio.write(' ')
    end
  end
  texio.write("\n")
  return head
end
tasks.appendaction("processors","before","MyPreLB")
\stopluacode
Dies ist ein Test.
\stoptext

Is it correct to return 'head'?

Wolfgang


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