From 555c7cc609504fcb8eaaaaa3d7dfb4ff2297e507 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <m.bunkus@linet-services.de>
Date: Fri, 19 Jan 2018 11:21:44 +0100
Subject: [PATCH] LaTeX-Druck: Unicode-Control-Zeichen und nicht druckbare
 Zeichen entfernen
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Filtert z.B. das »bidirectional left-to-right«-Kontroll-Zeichen raus,
an dem sich LaTeX verschluckt.
---
 SL/Template/LaTeX.pm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/SL/Template/LaTeX.pm b/SL/Template/LaTeX.pm
index c85529ced..da0967ba7 100644
--- a/SL/Template/LaTeX.pm
+++ b/SL/Template/LaTeX.pm
@@ -123,6 +123,9 @@ sub format_string {
     // $formatters{ $self->{default_content_type} }
     // $formatters{ text };
 
+  $content  =~ s{[^\p{Print}]|\p{Cf}}{}g;
+  $variable =~ s{[^\p{Print}]|\p{Cf}}{}g;
+
   return $formatter->($self, $content, variable => $variable);
 }
 
-- 
2.20.1