This character is a Uppercase Letter and is mainly used in the Vithkuqi script. Its lowercase variant is Vithkuqi Small Letter O.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+10587 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Vithkuqi alphabet, also called BΓΌthakukye or Beitha Kukju after the appellation applied to it by German Albanologist Johann Georg von Hahn, was an alphabetic script invented for writing the Albanian language between 1825 and 1845 by Albanian scholar Naum Veqilharxhi.
Representations
System
Representation (click value to copy)
NΒΊ
66951
UTF-8
F0 90 96 87
UTF-16
D8 01 DD 87
UTF-32
00 01 05 87
URL-Quoted
%F0%90%96%87
HTML hex reference
𐖇
Wrong windows-1252 Mojibake
Γ°Βββ‘
Encoding: GB18030 (hex bytes)
90 31 90 35
RFC 5137
\u'10587'
Bash and Zsh inside echo -e
\U00010587
C and C++
\U00010587
C#
\U00010587
CSS
\010587
Excel
=UNICHAR(66951)
Go
\U00010587
JavaScript
\uD801\uDD87
Modern JavaScript since ES6
\u{10587}
JSON
\uD801\uDD87
Java
\uD801\uDD87
Lua
\u{10587}
Matlab
char(66951)
Perl
"\x{10587}"
PHP
\u{10587}
PostgreSQL
U&'\+010587'
PowerShell
`u{10587}
Python
\U00010587
Ruby
\u{10587}
Rust
\u{10587}
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