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%%
%% Ein Beispiel der DANTE-Edition
%%
%% 1. Auflage
%%
%% Beispiel 04-04-14 auf Seite 97.
%%
%% 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{libertine,luacode,blindtext,color,microtype}
\begin{luacode*}
function drawGlyphBB(glyph)
local width = glyph.width/2^16
local height = glyph.height/2^16
local depth = glyph.depth/2^16
local w=node.new("whatsit","pdf_literal")
w.data=string.format("q 0 G 0.2 w "..-width.." "..-depth.." "..width.." "..(height+depth).." re 0 g f b Q ")
return w
end
function markList(List)
while List do
if List.id==0 or List.id==1 then markList(List.head) end
if List.id==37 then
local m=List -- save current node
m=node.insert_after(m,m,drawGlyphBB(List))
end
List=List.next
end
return true
end
\end{luacode*}
%StopShownPreambleCommands
\begin{document}
\directlua{luatexbase.add_to_callback("post_linebreak_filter",markList,"markList")}
\color{white}\blindtext \par
\end{document}
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