%%
%% Ein Beispiel der DANTE-Edition
%%
%% 1. Auflage
%%
%%
%% Copyright (C) 2013 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\setlength\parindent{0pt}
\usepackage[ngerman]{babel}
%StartShownPreambleCommands
\usepackage{luacode}
\begin{luacode*}
function markNode(color)
local w=node.new("whatsit","pdf_literal")
w.data=string.format("q "..color.."RG 2 w 0 -0.1 m 0 10 l S Q")
return w
end
function markList(List)
for n in node.traverse(List) do
if n.id==1 then markList(List.head)
elseif n.id==0 then -- Zeilenanfang gefunden
n.head=node.insert_before(
n.head, n.head, markNode("1 0 0"))
end
end
return true
end
\end{luacode*}
%StopShownPreambleCommands
\begin{document}
\parbox{5cm}{%
\directlua{luatexbase.add_to_callback("post_linebreak_filter",markList,"markList")}%
Jetzt soll \hbox{hier ein} langer Text angegeben werden, dessen Knotenliste wir
betrachten.\par
Rot: Zeilenanfang\par
Grun: Wortende\par
Blau: Absatzende}
\directlua{luatexbase.remove_from_callback("post_linebreak_filter","markList")}
\end{document}
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