[tex-hyphen] Error in hypenation of Russsian accented «ы»

[Philip Taylor]

Claudio Beccari <claudio.beccari at gmail.com <mailto:claudio.beccari at gmail.com>> wrote :

>     That pattern is responsible of that error.  But if you have a pattern such as 2^^^^0301 in the pattern list the error should vanish; if code 2 is not sufficient to eliminate alla errors, maybe 4 is OK (the lowest the best, but if 4 works and 2 doesn't, use 4 -- do not try to use 8, the highest value to forbid hyphenation).
>
But why is it, Claudio, that I can successfully over-ride the pattern using \hyphenation {} using plain XeTeX but it cannot be over-ridden using \hyphenation when using XeLaTeX & polyglossia ?

Philip Taylor
--------
Annexe 1 :  MWE (XeTeX) :

% !TeX Program = XeLaTeX

\font \thisfont = "Palatino Linotype"

\uselanguage {russian}

\thisfont

\hsize = 1pt

\overfullrule = 0 pt

\XeTeXinputnormalization = 0

\hyphenation {ны́-не}

\noindent Почему́ перено́сы в словах ны́не и мы́ши ухо́дят на сле́дующую стро́чку, а в мя́со брэ́кет слу́хи ворю́га — нет?

\end



Annexe 2 :  MNWE (XeLaTeX)

% !TeX Program = XeLaTeX


\documentclass[twoside]{article}

\usepackage{fontspec}

\usepackage[T2A]{fontenc}

\newfontfamily\cyrillicfont[Mapping=tex-text]{PT Serif}

\usepackage{polyglossia}

\setdefaultlanguage{russian}

\fontsize{10}{12}\selectfont


\hyphenation{ны́-не}


\begin{document}

\parbox{1pt}{Почему́ перено́сы в словах ны́не и мы́ши ухо́дят на сле́дующую стро́чку, а в мя́со брэ́кет слу́хи ворю́га — нет?}

\end{document}


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