LaTeX URL package, how can I display German umlaute in beamerclass

Question

I wanna print the following link (https://commons.wikimedia.org/wiki/File:Eidgenössische_Abstimmung_über_die_Verminderung_von_Treibhausgasemissionen_2021.svg) in a latex beamer presentation.

Here is my example that leaves out the ö (using another template I got something else than the ö):

    \RequirePackage[hyphens]{url}
\documentclass[aspectratio=169,10pt]{beamer}
\PassOptionsToPackage{hyphens}{url}\usepackage{hyperref}
\title{Example Title}
\author{Example Author}
\institute{Example Inst}
\date{\today}
\begin{document}
\begin{frame}[fragile]{Example:}
\url{https://commons.wikimedia.org/wiki/File:Eidgenössische_Abstimmung_über_die_Verminderung_von_Treibhausgasemissionen_2021.svg}
\end{frame}
\end{document}

Simple workaround: \url{https://commons.wikimedia.org/wiki/File:Eidgen%C3%B6ssische_Abstimmung_%C3%BCber_die_Verminderung_von_Treibhausgasemissionen_2021.svg} — samcarter_is_at_topanswers.xyz, Nov 28 '22 at 11:37
I wished there would be a way for me to transform the link this way - however I always see it with ö and ü in my URL address line. And because I have many links I cannot manually change them all. — canIchangethis, Nov 28 '22 at 12:59
Also all the % symbols make my code break and only display the Url until \url{https://commons.wikimedia.org/wiki/File:Eidgen" — canIchangethis, Nov 28 '22 at 13:02
Oh they work, but they show another link (not easy to read for humans) — canIchangethis, Nov 28 '22 at 13:05

Mico · Accepted Answer · 2022-11-28T12:43:18.397

4

I experience no problems with the Umlauts when I (a) compile the document with LuaLaTeX and (b) reformulate your code to employ the xurl package instead of the url package, to allow the URL string to break anywhere (not just at hyphen characters).

\documentclass[aspectratio=169,10pt]{beamer}
\usepackage{xurl} % allow line breaks at arbitrary points in URL string
\usepackage{hyperref}
\begin{document}
\begin{frame}{Example}
\url{https://commons.wikimedia.org/wiki/File:Eidgenössische_Abstimmung_über_die_Verminderung_von_Treibhausgasemissionen_2021.svg}
\end{frame}
\end{document}

edited Nov 28 '22 at 12:43

answered Nov 28 '22 at 12:29

Mico

506,678

This is weird. Tried it in two different documents (both in overleaf) and never works for me :( (ok didn't use LuaLaTeX correctly) – canIchangethis Nov 28 '22 at 12:58
2

you should use a percent encoded url (split with \href). While many pdf viewers can handle url's with umlauts, they are actually not valid in a pdf and so not reliable. – Ulrike Fischer Nov 28 '22 at 14:12
Okay! If I use % in the urls it works, just hate changing things manually, as this is very error prone. – canIchangethis Nov 28 '22 at 15:58
@UlrikeFischer - Could you elaborate on the "url's with umlauts ... are ... reliable" comment? E.g., which pdf viewers may have trouble with such url strings? FWIW, Adobe Reader and Acrobat appear to handle the url in question just fine. – Mico Nov 28 '22 at 16:49
2

@Mico I don't know the current state, we run a number of tests around 1-2 years ago, and various viewers on mac failed. – Ulrike Fischer Nov 28 '22 at 17:04
1

@Mico For example mac Preview.app v. 11.0 fails. – samcarter_is_at_topanswers.xyz Nov 28 '22 at 19:34

LaTeX URL package, how can I display German umlaute in beamerclass

1 Answers1