[XeTeX] Uppercase in Armenian

[David Carlisle]

the input uses a ligature character which has no corresponding uppercase,
you need to decompose the ligature before uppercasing, which \uppercase
can't do, you see the same in Latin script ff ligature

\uppercase{diff diff}

looks like DIFF DIff as the second one uses U+FB00 which has no uppercase.

 U+0587 ARMENIAN SMALL LIGATURE ECH YIWN

would be better input as  U+0565 U+0582

David




On Sun, 1 May 2022 at 00:09, Zdenek Wagner <zdenek.wagner at gmail.com> wrote:

> Yes, it looks better but the uppercase version should contain ԵՎ, not ԵՒ.
> Վ is capital vew (U+54E) while Ւ is capital yiwn (U+552).
>
> Zdeněk Wagner
> http://ttsm.icpf.cas.cz/team/wagner.shtml
>
>
> ne 1. 5. 2022 v 0:53 odesílatel David Carlisle <d.p.carlisle at gmail.com>
> napsal:
>
>> Something like this, I think.
>>
>> [image: image.png]
>>
>> \documentclass{article}
>> \usepackage{polyglossia}
>>
>> \setdefaultlanguage{armenian}
>> \setmainfont{DejaVu Sans}
>> \ExplSyntaxOn
>> \let\tuppercase\text_uppercase:n
>> \ExplSyntaxOff
>> \pagestyle{empty}
>> \begin{document}
>> Երևան $\rightarrow$ \uppercase{Երևան}
>>
>> Երևան $\rightarrow$ \tuppercase{Երևան}
>>
>> \end{document}
>>
>> David
>>
>>
>> On Sat, 30 Apr 2022 at 22:15, Zdenek Wagner <zdenek.wagner at gmail.com>
>> wrote:
>>
>>> Hi all,
>>>
>>> first I should mention that I do not know Armenian at all and can just
>>> recognize a few characters. Anyway I came across a problem which
>>> probably cannot be solved by the standard \lccode / \uccode method.
>>> What I mean is Yerevan which is written as Երևան but YEREVAN (all
>>> caps) is ԵՐԵՎԱՆ because և has no uppercase variant and must be
>>> replaced by two characters ԵՎ. At least, it is visible in Elena
>>> Yerevan's songs shot in the city of Yerevan. The following file
>>>
>>> \documentclass{article}
>>> \usepackage{polyglossia}
>>> \setdefaultlanguage{armenian}
>>> \setmainfont{DejaVu Sans}
>>> \pagestyle{empty}
>>> \begin{document}
>>> Երևան $\rightarrow$ \uppercase{Երևան}
>>> \end{document}
>>>
>>> shows that all characters are converted correctly to uppercase but և
>>> remains in lovercase. Is there a solution?
>>>
>>> Zdeněk Wagner
>>> http://ttsm.icpf.cas.cz/team/wagner.shtml
>>>
>>>
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