Le lundi 25 octobre 2010 à 14:08 +0300, Arns Udovīčė a écrit :
> Hello all,
> 
> On 2010-06-30 change became effective for Samogitian
> (http://www.sil.org/iso639-3/documentation.asp?id=sgs). There are one
> letter which has many problems with rendering. It is E/e with dot
> above and macron [...]  You can see it in: atvīkė̄ or Vielībė̅jė. On
> Linux it is shown (in different shrifts) as „ė“ with macron between
> dot and letter or „ė“ with minus near letter (see attachment).

On my (linux) system, it is well rendered.

>  [...] Try to use in IT is complicated. 
> What I should to do what this letter come to unicode? As I read in
> http://www.unicode.org/pending/proposals.html it is better to deal
> about it in this thread at first.

First, Unicode has stopped long time ago (Unicode 4.1 ?) to encode
composite latin diacritics. I have the feeling it should be documented
in http://www.unicode.org/faq/char_combmark.html#9 , but I've been
unable to find a clear statement here. The main reason is thet it would
break normalization stability
( http://www.unicode.org/policies/stability_policy.html#Normalization )
causing security problems (see http://www.unicode.org/reports/tr36/)

That's why, for exemple, letters for Lithuanian like LATIN CAPITAL
LETTER A WITH OGONEK AND ACUTE; U+0104 U+0301, is not encoded as a
unicode character but as a named sequence. 

You may ask for encoding *LATIN {CAPITAL,SMALL} LETTER E WITH DOT ABOVE
AND MACRON as a named sequence (see
http://www.unicode.org/faq/named_sequences.html#3 and folllowing), but
I'm not sure it has a big chance to stay.

        Frédéric
-- 
Frédéric Grosshans
Chargé de Recherche
Laboratoire de Photonique Quantique et Moléculaire
ENS Cachan / CNRS UMR 8437
tel: (+33)1 47 40 77 15
GSM: (+33)6 09 24 29 64
e-mail: frederic.grossh...@ens-cachan.fr


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