This character is a Other Letter and is mainly used in the Cham script.
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. U+AA03 forms an orthographic syllable in Brahmic scripts with similar characters, which prevents a line break inside it.
El Wikipedia tiene la siguiente información acerca de este punto de código:
The Cham script (Cham: ꨀꨇꩉ ꨌꩌ)is a Brahmic abugida used to write Cham, an Austronesian language spoken by some 245,000 Chams in Vietnam and Cambodia. It is written horizontally left to right, just like other Brahmic abugidas.
Representaciones
Sistema
Representación (click value to copy)
N.º
43523
UTF-8
EA A8 83
UTF-16
AA 03
UTF-32
00 00 AA 03
URL-Quoted
%EA%A8%83
HTML hex reference
ꨃ
Mojibake mal de windows-1252
ꨃ
Codificación: GB18030 (hexadecimales bytes)
82 37 9C 36
RFC 5137
\u'AA03'
Bash and Zsh inside echo -e
\uAA03
C and C++
\uAA03
C#
\uAA03
CSS
\00AA03
Excel
=UNICHAR(43523)
Go
\uAA03
JavaScript
\uAA03
Modern JavaScript since ES6
\u{aa03}
JSON
\uAA03
Java
\uAA03
Lua
\u{AA03}
Matlab
char(43523)
Perl
"\x{AA03}"
PHP
\u{aa03}
PostgreSQL
U&'\AA03'
PowerShell
`u{AA03}
Python
\uAA03
Ruby
\u{aa03}
Rust
\u{aa03}
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