\texorpdfstring and Header setting

Question

I want to include chapters of the form

\chapter[Measures $\mu$]{\texorpdfstring{Measures $\boldsymbol{\mu}$}{Measures}}

Here the [..] are for formating the Layout in the title, and \texorpdfstring{}{} is used to distinguish between the heading and what is written in the toc. When doing so, it ignores the pdf string and I get the correct heading, the correct header but the wrong output in the PDF heading.

Can someone tell me why and indicate a way to fix this?

the short form from the [] option is used in the toc and pdf so \texorpdfstring in the main argument is not used. — David Carlisle, Mar 18 '18 at 15:27

score 4 · Accepted Answer · edited Dec 02 '23 at 04:22

Since PDF bookmarks are a kind of table of contents, package hyperref catches the string for the table of contents, the optional argument of the sectioning commands, for the bookmarks. \texorpdfstring should go there.

\textmu is also available in the default PDFDocEncoding. To get a broader support for math symbols, option unicode (or pdfencoding=auto) and psdextra for additional support for lots of math symbol macros can be used.

Example file:

\documentclass{report}
\usepackage{amsmath}
\usepackage[pdfencoding=auto, psdextra]{hyperref}
\begin{document}
\chapter[Measures \texorpdfstring{$\mu$}{\textmu}]%
  {Measures $\boldsymbol{\mu}$}
\end{document}

I would try to avoid math in chapter/section titles though, because bold symbols often have a different meaning as non-bold symbols in math and a font mixup in the titles does not look too nice.

\texorpdfstring and Header setting

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