This character is a Other Letter and is mainly used in the Avestan script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from right to left. When changing direction it is not mirrored. The word that U+10B2E forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Avestan alphabet (Avestan: 𐬛𐬍𐬥 𐬛𐬀𐬠𐬌𐬭𐬫𐬵 transliteration: dīn dabiryªh, Middle Persian: transliteration: dyn' dpywryh, transcription: dēn dēbīrē, Persian: دین دبیره, romanized: din dabire) is a writing system developed during Iran's Sasanian era (226–651 CE) to render the Avestan language.
As a side effect of its development, the script was also used for Pazend, a method of writing Middle Persian that was used primarily for Zend commentaries on the texts of the Avesta. In the texts of Zoroastrian tradition, the alphabet is referred to as "the religion's script" (dēn dibīrih in Middle Persian and din dabireh in New Persian).
Representations
System
Representation (click value to copy)
Nº
68398
UTF-8
F0 90 AC AE
UTF-16
D8 02 DF 2E
UTF-32
00 01 0B 2E
URL-Quoted
%F0%90%AC%AE
HTML hex reference
𐬮
Wrong windows-1252 Mojibake
ð¬®
Encoding: GB18030 (hex bytes)
90 32 A3 32
RFC 5137
\u'10B2E'
Bash and Zsh inside echo -e
\U00010B2E
C and C++
\U00010B2E
C#
\U00010B2E
CSS
\010B2E
Excel
=UNICHAR(68398)
Go
\U00010B2E
JavaScript
\uD802\uDF2E
Modern JavaScript since ES6
\u{10b2e}
JSON
\uD802\uDF2E
Java
\uD802\uDF2E
Lua
\u{10B2E}
Matlab
char(68398)
Perl
"\x{10B2E}"
PHP
\u{10b2e}
PostgreSQL
U&'\+010B2E'
PowerShell
`u{10B2E}
Python
\U00010B2E
Ruby
\u{10b2e}
Rust
\u{10b2e}
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