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I'm using package hyperref to write a book in Portuguese. Appendices should appear in TOC as in Apêndice A Title of the appendix.

When I compile it with LuaLatex on a computer with Ubuntu 16.04, I get this error message:

! Missing \endcsname inserted.
<to be read again> 
\char 
l.2 ....a.A}{Ap\352ndice T\355tulo de ap\352ndice}{}

The file main.out looks like this:

\BOOKMARK [0][-]{chapter.1}{Blabla}{}% 1
\BOOKMARK [0][-]{Ap\char "00EA\relax ndice.a.A}{Ap\352ndice T\355tulo de ap\352ndice}{}% 2

But, when I compile the same project with LuaLatex on a computer with Ubuntu 18.10, I get no error message and the file main.out looks like this:

\BOOKMARK [0][-]{chapter.1}{Blabla}{}% 1
\BOOKMARK [0][-]{Apêndice.a.A}{Ap\352ndice T\355tulo de ap\352ndice}{}% 2

What can possible be wrong with LuaLatex on my Ubuntu 16.04?

MWE:

\documentclass[10pt]{book}

\usepackage[utf8]{luainputenc}
\usepackage[title,titletoc]{appendix}
\renewcommand{\appendixname}{Apêndice}
\usepackage{fontspec}
\usepackage[breaklinks=true]{hyperref}
\usepackage{tocloft}
\usepackage[notlof,notlot,nottoc]{tocbibind}

\title{TÍTULO DO LIVRO}
\author{Nome do Autor}

\begin{document}

\frontmatter
\pagestyle{empty}

\maketitle

\tableofcontents\thispagestyle{empty}
\cleardoublepage 

\mainmatter

\chapter{Blabla}

Blablabla.

\begin{appendices}

\chapter{Título de apêndice}

Texto.
\newpage
Mais texto.
\end{appendices}

\end{document}
Leonardo Castro
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    Don't use luainputenc. (I don't know if it is the source of your problem, I didn't try your MWE is far away from a minimal example.) – Ulrike Fischer Jan 30 '19 at 12:58
  • In titles, try to do not add explicit accented chars, instead try things like \'a etc. – manooooh Jan 30 '19 at 16:38
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    @manooooh With LuaLaTeX that really should not be necessary. And I have never had issues with non-ASCII chars in pdfLaTeX either in those positions. – moewe Jan 30 '19 at 16:39
  • Sorry, I reduced the example further. Indeed, the problem doesn't appear when I exclude the line \usepackage[utf8]{luainputenc}. But I think I included that line because I needed it in my document for some purpose. Why shouldn't I use luainputenc? – Leonardo Castro Jan 30 '19 at 16:41
  • @manooooh I had already tried that. I had replaced \renewcommand{\appendixname}{Apêndice} with \renewcommand{\appendixname}{Ap\^endice}, but the error message didn't change. – Leonardo Castro Jan 30 '19 at 16:43
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    You would only need luainputenc if you had to combine legacy encodings and Unicode in the same document, using LuaLaTeX. If at all possible, I would advise you to instead remove any legacy font packages, and use Unicode throughout. – Davislor Jan 30 '19 at 18:24
  • The problem manifested again in another computer, even without luainputenc... Not for the MWE, but for my original document. – Leonardo Castro Mar 06 '19 at 18:46
  • I found what's causing the problem. It seems I can't use Babel, Hyperref, Lualatex and Bibtex together. If I add \usepackage[greek,portuguese]{babel} to the MWE, lualatex doesn't work after the bibtex command. The same error described in my question appears. – Leonardo Castro Mar 06 '19 at 23:09
  • Just found the solution in https://tex.stackexchange.com/a/58883/91816. – Leonardo Castro Mar 07 '19 at 01:03
  • @Davislor I remembered today: I use luainputenc for accent letters to appear correctly in bookmarks. – Leonardo Castro Mar 11 '19 at 11:03
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    @LeonardoCastro That probably is not the best approach: the hyperref manual says that bookmarks must be in Unicode anyway. Your source files for LuaTeX should always be UTF-8, and you should give hyperref the unicode=true option. The only time you’d need luainputenc is if you’re trying to mix Unicode with legacy 7- and 8-bit fonts, but in the real world there’s no reason to ever do that. If you’re writing your book in LuaTeX, you can just consistently use Unicode. – Davislor Mar 11 '19 at 15:17
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    @LeonardoCastro There are a handful of special cases where you might be forced to use a legacy font in the same document as Unicode. If you’re writing a new book, though, and you’re handling details like the bookmarks yourself, and something you do needs luainputenc, you should stop doing it. – Davislor Mar 11 '19 at 15:30

0 Answers0