[XeTeX] Follow-up to previous mail about hyphenation

[Jonathan Kew]

On 25/03/2021 11:24, Yannis Haralambous wrote:
> Well if the text width is 0pt it will only break once, no?

Normally, I'd expect a break at every opportunity if the width is 0pt.

In plain (xe)tex,

   \hsize 0pt
   \noindent \hskip 0pt supercalifragilisticexpialidocious \par

gives me essentially one syllable per line.

But in the Arabic-script Amiri example this doesn't work for me. I 
suspect this is a bug in xetex.

> 
> I begin to believe that in plain TeX ^^^^200d is treated just like any 
> other character,
> so the problem lies not in XeTeX, but in polyglossia+fontspec somewhere 
> there is some
> special treatment of ^^^^200d so that my LaTeX code doesn't work.
> 
> I have opened an issue on the polyglossia github…
> 
>> Le 25 mars 2021 à 12:18, Bruno Le Floch <blflatex at gmail.com 
>> <mailto:blflatex at gmail.com>> a écrit :
>>
>> Pushing some more in this direction, my code below (with 
>> Amiri-Regular.ttf being
>> in the same directory) hyphenates the second and third "blabla" 
>> (consistent with
>> Yannis' reminder that the first word is not hyphenated) but only 
>> hyphenates in a
>> single place (the first one) in the sequence of ^^^^xyzt afterwards.
> 
> IMT Atlantique <http://www.imt-atlantique.fr>	
> *Yannis HARALAMBOUS*
> Professor
> Computer Science Department
> UMR CNRS 6285 Lab-STICC
> Site web IMT Atlantique 
> <http://perso.telecom-bretagne.eu/yannisharalambous/>Twitter IMT 
> Atlantique <https://twitter.com/y_haralambous>LinkedIn IMT Atlantique 
> <https://www.linkedin.com/in/yannis-haralambous-5529073?trk=hp-identity-name>
> Technopôle Brest-Iroise CS 83818
> 29238 Brest Cedex 3, France
> Une école del'IMT <http://www.imt.fr>
> 
> /— Vous cherchez trop à comprendre, c'est un grave défaut.
> — J'ai déjà entendu cette phrase. — Vous l'avez écrite./     (Jean Cocteau)
> 
>