This character is a Other Letter and is mainly used in the Thaana script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written as Arabic letter from right to left. When changing direction it is not mirrored. The word that U+07A3 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Thaana, Tãnaa, Taana or Tāna ( ތާނަ ) is the present writing system of the Maldivian language spoken in the Maldives. Thaana has characteristics of both an abugida (diacritics, vowel-killer strokes) and a true alphabet (all vowels are written), with consonants derived from indigenous and Arabic numerals, and vowels derived from the vowel diacritics of the Arabic abjad. Maldivian orthography in Thaana is largely phonemic.
Representations
System
Representation (click value to copy)
Nº
1955
UTF-8
DE A3
UTF-16
07 A3
UTF-32
00 00 07 A3
URL-Quoted
%DE%A3
HTML hex reference
ޣ
Wrong windows-1252 Mojibake
Þ£
Encoding: GB18030 (hex bytes)
81 31 A9 39
RFC 5137
\u'07A3'
Bash and Zsh inside echo -e
\u07A3
C and C++
\u07A3
C#
\u07A3
CSS
\0007A3
Excel
=UNICHAR(1955)
Go
\u07A3
JavaScript
\u07A3
Modern JavaScript since ES6
\u{7a3}
JSON
\u07A3
Java
\u07A3
Lua
\u{7A3}
Matlab
char(1955)
Perl
"\x{7A3}"
PHP
\u{7a3}
PostgreSQL
U&'\07A3'
PowerShell
`u{7A3}
Python
\u07A3
Ruby
\u{7a3}
Rust
\u{7a3}
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