Bug Tracker

> This is because \glssymbolsgroupname is defined as \translate {Symbols (glossaries)} and \glsnumbersgroupname is defined as \translate {Numbers (glossaries)}.

In fact, it would probably work if \glsnumbersgroupname would be defined in terms of \translatelet instead of \translate:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[french]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{translator}
\usepackage{hyperref}
%
\deftranslation[to=French]{foo}{Bar}
\translatelet\trfoo{foo}%
%
\begin{document}
\section{Bar 1}
\section{\translate{foo} 2}
\section{\trfoo{} 3}
\end{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

What is strange is that, if ordinary glossary entry and acronym are added to the initial MWE above, the bookmarks of the corresponding glossaries are translated ("Glossaire" and "Acronymes"), and still not the ones corresponding to symbols and numbers:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[french]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage[bookmarksopen]{hyperref}
\usepackage[acronyms,symbols,numbers,toc]{glossaries}
%
\makeglossaries
%
\newglossaryentry{bar}{name=bar,description=bar}
\newacronym{at}{at}{Acronym test}
\newglossaryentry{angstrom}{type=symbols,name={\aa}ngstr\"om,
  symbol={\AA},sort=angstrom, description={non-SI unit of length}}
%
\newglossaryentry{one}{type=numbers,name=one,description=A number}
%
\begin{document}
\glsaddall
\printglossaries
\end{document}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Investigating a bit more this bug, I noticed that the .aux file corresponding to the previous .tex file contains:

\@writefile{toc}{\contentsline {section}{Glossaire}{1}{section*.1}}
\@writefile{toc}{\contentsline {section}{Acronymes}{1}{section*.3}}
\@writefile{toc}{\contentsline {section}{\translate  {Symbols (glossaries)}}{1}{section*.5}}
\@writefile{toc}{\contentsline {section}{\translate  {Numbers (glossaries)}}{1}{section*.7}}

And, indeed, the glossaries' code shows (lines 775 to 792) that captions' translations are defined in terms of (1) \translatelet (with \glossarytoctitle and \glossarytoctitle macros) for "Glossary" and "Acronyms", (2) \translate for "Glossary" and "Acronyms" (\glssymbolsgroupname and \glsnumbersgroupname).

The bug has indeed been fixed in version 4.06, except in case of redefinition of sections macros. In the following MCE, the glossary bookmark isn't translated, with warning: "Package hyperref Warning: Token not allowed in a PDF string (PDFDocEncoding): removing `\translate ' on input line".

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\documentclass[french]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{hyperref}%
\usepackage{glossaries}
%
\makeglossaries
%
\let\ORIsection\section%
\makeatletter%
\renewcommand\section{%
  \@ifstar\ORIsection\ORIsection%
}%
\makeatother%
%
\newglossaryentry{bar}{%
  name={bar},
  description={bar}
}
\glsaddall
%
\begin{document}
\tableofcontents
\printglossary
\end{document}

Your redefinition means that when the glossary uses:

\section*{title}

\section[title]{title}

\section[toc title]{title}

\documentclass[french]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{babel}
\usepackage{hyperref}%
\usepackage{glossaries}
%
\makeglossaries
%
\let\ORIsection\section%
\makeatletter%
\renewcommand\section{%
  \@ifstar\ORIsection\ORIsection%
}%
\makeatother%

\let\glossarysection\ORIsection
%
\newglossaryentry{bar}{%
  name={bar},
  description={bar}
}
\glsaddall
%
\begin{document}
\tableofcontents
\printglossary
\end{document}

My MWE maybe was too extreme! ;) In my real use case, I have different definitions for the starred and the non starred versions of \section but I'm not sure it will be enough w.r.t to what you mentioned:

\section*{title}

\section[title]{title}

\section[toc title]{title}

> the numberedsection=nolabel and
> numberedsection=autolabel package options should
> use the optional argument of the unstarred sectioning
> commands, otherwise a similar problem may occur.

Is this related to the trouble that, in the following MCE, the glossary is in the table of contents even if no toc option is passed to glossaries?

\documentclass{article}
\usepackage{glossaries}
%
\makeglossaries
%
\let\ORIsection\section%
\makeatletter%
\renewcommand\section{%
  \@ifstar\ORIsection\ORIsection%
}%
\makeatother%

\let\glossarysection\ORIsection
%
\newglossaryentry{bar}{%
  name={bar},
  description={bar}
}
\glsaddall
%
\begin{document}
\tableofcontents
\printglossary
\end{document}

No. It's in the TOC because \glossarysection is now using the original unstarred \section, which by default puts its argument in the TOC. The toc option is ignored because \glossarysection has been redefined to ignore it. If you modify the behaviour of the sectioning commands, it's best to redefine \glossarysection[toc title]{title} in whatever manner fits in with your new sectioning style. You can test for the toc option within your new definition of \glossarysection with \ifglstoc. For example:

\renewcommand*{\glossarysection}[2][]{%
  \ORIsection*{#2}%
  \ifglstoc
    \addcontentsline{toc}{section}{#1}%
  \fi
}

\renewcommand*{\glossarysection}[2][]{%
  \ORIsection*{#2}%
  \ifglstoc
    \ifglsnumberline
      \addcontentsline{toc}{section}{\numberline{}#1}%
    \else
      \addcontentsline{toc}{section}{#1}%
    \fi
  \fi
}

Thanks, the first code currently does the trick. I'll look to the next version to see if something has to be changed afterwards.