[Bug localedata/2872] Transliteration Cyrillic -> ASCII fails

["ekobylkin at paypal dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=2872

--- Comment #7 from Egor Kobylkin <ekobylkin at paypal dot com> ---
Andreas, in your example the Cyrillic transliteration does not work either.  My
understanding is that the tool is lacking a translation table for Cyrillic to
TRANSLIT for example in the ru_RU locale. This is what Ulrich Drepper asks for
in his comment2 here: https://sourceware.org/bugzilla/show_bug.cgi?id=2872#c2
I would like to know in which form this data should be provided?

I am only concerned with the Cyrillic for now. German serves as an example that
the functionality works at all in at least one case.

My first submission is from Cygwin on Windows 7. While it may be indeed some
effect of the Cygwin (name similarity to Cyrillic is coincidental) I have just
tried the same on Ubuntu 12 for essentially same effect.

$ echo Лаковый |LANG=ru_RU.UTF-8 iconv -t ASCII//TRANSLIT
iconv: illegal input sequence at position 0
$ echo Лаковый |LANG=sr_CS.UTF-8 iconv -t ASCII//TRANSLIT
iconv: illegal input sequence at position 0
$ echo Лаковый |LANG=de_DE.UTF-8 iconv -t ASCII//TRANSLIT
iconv: illegal input sequence at position 0
$ echo Müßte |LANG=de_DE.UTF-8 iconv -t ASCII//TRANSLIT
Miconv: illegal input sequence at position 1
$ echo Лаковый |LANG=en_US.UTF-8 iconv -t ASCII//TRANSLIT
???????
$ echo Müßte |LANG=en_US.UTF-8 iconv -t ASCII//TRANSLIT
Musste

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From: "myllynen at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/2872] Transliteration Cyrillic -> ASCII fails
Date: Mon, 07 Sep 2015 15:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id(72

Marko Myllynen <myllynen at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |myllynen at redhat dot com

--- Comment #8 from Marko Myllynen <myllynen at redhat dot com> ---
You'll need to setup testing environment where you can see how your changes
affect to iconv and then try to come up with proper rules, the following links
should help get you started (and are pretty much all the documentation there
is):

https://sourceware.org/glibc/wiki/Locales
http://man7.org/linux/man-pages/man1/iconv.1.html
https://sourceware.org/bugzilla/show_bug.cgi?id\x16061
https://sourceware.org/ml/libc-alpha/2015-07/msg00836.html

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