[XeTeX] Hyphenation around „ß“

[Zdenek Wagner]

What do \showthe\catcode`\ß and \showthe\lccode`\ß display?

2014/1/8 Georg Pfeiffer <gp at praetor.de>:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Hi,
>
> why does XeTeX (sometimes) suppress hyphenation round around an "ß",
> where TeX does not (minimal examples following)?
>
> Georg
>
>
> XeTeX:
> - --8<---------------cut here---------------start------------->8---
> \documentclass{article}
> \usepackage[german]{babel}
> \usepackage{xltxtra}
> \begin{document}
> \showhyphens{geißeln}
> \showhyphens{wußte}
> \end{document}
> - --8<---------------cut here---------------end--------------->8---
>
> - --8<---------------cut here---------------start------------->8---
> This is XeTeX, Version 3.1415926-2.4-0.9998 (TeX Live 2012/Debian) (format=xelatex 2014.1.2)  8 JAN 2014 08:18
> entering extended mode
>  restricted \write18 enabled.
>  %&-line parsing enabled.
> **\input minxe.tex
>
> ...
>
> *********************** \showhyphens: ***********************
>
> Underfull \hbox (badness 10000) detected at line 5
>  \EU1/lmr/m/n/10 geißeln
>  []
>
> *************************************************************
>
>
> *********************** \showhyphens: ***********************
>
> Underfull \hbox (badness 10000) detected at line 6
>  \EU1/lmr/m/n/10 wußte
>  []
>
> *************************************************************
>
> ...
>
> - --8<---------------cut here---------------end--------------->8---
>
>
> PdfTeX:
> - --8<---------------cut here---------------start------------->8---
> \documentclass{article}
> \usepackage[T1]{fontenc}
> \usepackage[utf8]{inputenc}
> \usepackage[german]{babel}
> \begin{document}
> \showhyphens{geißeln}
> \showhyphens{wußte}
> \end{document}
> - --8<---------------cut here---------------end--------------->8---
>
> - --8<---------------cut here---------------start------------->8---
> This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012/Debian) (format=pdflatex 2014.1.2)  8 JAN 2014 08:20
> entering extended mode
>  restricted \write18 enabled.
>
> ...
>
> Underfull \hbox (badness 10000) in paragraph at lines 6--6
> [] \T1/cmr/m/n/10 gei-ßeln
>
> Underfull \hbox (badness 10000) in paragraph at lines 7--7
> [] \T1/cmr/m/n/10 wuß-te
>
> ...
>
> - --8<---------------cut here---------------end--------------->8---
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.12 (GNU/Linux)
>
> iEYEARECAAYFAlLNA0UACgkQeekUveeeVovOYACgnLpF2O9qrA9oN9cSvkdDQkP+
> KdYAnihFB0iZ9OG6YbZgdmM0Yf86SgXq
> =L+EJ
> -----END PGP SIGNATURE-----
>
>
>
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-- 
Zdeněk Wagner
http://hroch486.icpf.cas.cz/wagner/
http://icebearsoft.euweb.cz