[XeTeX] Discretionary hyphens don't work in paragraphed footnotes

Jonathan Kew jfkthame at gmail.com
Fri Oct 9 11:50:02 CEST 2015

On 7/10/15 16:18, Peter Mukunda Pasedach wrote:
> Dear XeTeX list,
> in the following example,
> \documentclass[a4paper]{article}
> \usepackage{fontspec}
> \usepackage[para]{footmisc}
> \begin{document}
> \footnote{XXXXXXXXXXXXXX just a few normal words to fill up the line
>    up to my word hy\-phe\-na\-te\-me}
> \end{document}
> the discretionary hyphens don't work. The combination required to
> produce this behaviour seems to be xelatex + paragraphed footnotes
> (here using the para option of footmisc, as it might be the easiest
> example, but also with manyfoot, bigfoot and eledmac) + fontspec. It
> looks like a bug to me. I've reported it here:
> http://sourceforge.net/p/xetex/bugs/118/ , sorry if my mail now would
> be considered crossposting, but I haven't seen any activity on this.
> I should maybe mention that I'm dealing with critical editions of
> Texts in Sanskrit in transliteration, for which, as far as I'm aware
> of, there is no solution for a reasonable default hyphenation i.e. via
> polyglossia, so that discretionary hyphens are the normal way of
> taking care of proper hyphenation.
> Peter

Just to follow up, now that we understand what's happening: here's a 
workaround I believe you could use in your xelatex document (if you 
haven't already solved it there). I notice that LaTeX uses an internal 
\@dischyph command, and periodically resets \- to this, so adding a 
zero-width kern to \@dischyph seems to work:

   \edef\@dischyph{\@dischyph \kern0pt }

Include this in your preamble, and the discretionary hyphens in the 
footnote should work as expected.


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