BUG #14885: mistake in sorting win1251 chars

From: k(dot)daskalov(dot)911(at)gmail(dot)com
To: pgsql-bugs(at)postgresql(dot)org
Cc: k(dot)daskalov(dot)911(at)gmail(dot)com
Subject: BUG #14885: mistake in sorting win1251 chars
Date: 2017-11-02 09:57:19
Message-ID: 20171102095719.17188.59150@wrigleys.postgresql.org
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The following bug has been logged on the website:

Bug reference: 14885
Logged by: Kalin Daskalov
Email address: k(dot)daskalov(dot)911(at)gmail(dot)com
PostgreSQL version: 9.4.4
Operating system: windows 7 64 bit
Description:

I'm using ORDER BY <character varying field> containing win-1251 symbols.
No matter whether the encoding is WIN1251 or UTF8.
I try it on different versions of PostgreSQL - the result is the same.
There is a mistake in sorted values for symbols "и" (&#1080;) and "й"
(&#1081;) - capital letters too.
Here is a small example:
"АЙГЕР"
"АИКО"
"АЙКОН"

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