This character is a Spacing Mark 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+AA2F prohibits a line break before it.
The Wikipedia has the following information about this codepoint:
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.
Representations
System
Representation (click value to copy)
Nº
43567
UTF-8
EA A8 AF
UTF-16
AA 2F
UTF-32
00 00 AA 2F
URL-Quoted
%EA%A8%AF
HTML hex reference
ꨯ
Wrong windows-1252 Mojibake
ꨯ
Encoding: GB18030 (hex bytes)
82 37 A1 30
RFC 5137
\u'AA2F'
Bash and Zsh inside echo -e
\uAA2F
C and C++
\uAA2F
C#
\uAA2F
CSS
\00AA2F
Excel
=UNICHAR(43567)
Go
\uAA2F
JavaScript
\uAA2F
Modern JavaScript since ES6
\u{aa2f}
JSON
\uAA2F
Java
\uAA2F
Lua
\u{AA2F}
Matlab
char(43567)
Perl
"\x{AA2F}"
PHP
\u{aa2f}
PostgreSQL
U&'\AA2F'
PowerShell
`u{AA2F}
Python
\uAA2F
Ruby
\u{aa2f}
Rust
\u{aa2f}
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