This character is a Nonspacing Mark and inherits its script property from the preceding character. It is also used in the scripts Latin, Syriac.
The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+032E prohibits a line break before it. The glyph can be confused with one other glyph.
The Wikipedia has the following information about this codepoint:
A breve (BREEV, less often BREV, neuter form of the Latin brevis "short, brief") is the diacritic mark ◌̆, shaped like the bottom half of a circle. As used in Ancient Greek, it is also called brachy, βραχύ. It resembles the caron (◌̌, the wedge or háček in Czech, mäkčeň in Slovak) but is rounded, in contrast to the angular tip of the caron. In many forms of Latin, ◌̆ is used for a shorter, softer variant of a vowel, such as "Ĭ", where the sound is nearly identical to the English /i/. (See: Latin IPA)
Representations
System
Representation (click value to copy)
Nº
814
UTF-8
CC AE
UTF-16
03 2E
UTF-32
00 00 03 2E
URL-Quoted
%CC%AE
HTML hex reference
̮
Wrong windows-1252 Mojibake
◌̮
Encoding: GB18030 (hex bytes)
81 30 C1 32
AGL: Latin-4
uni032E
AGL: Latin-5
uni032E
Adobe Glyph List
brevebelowcmb
RFC 5137
\u'032E'
Bash and Zsh inside echo -e
\u032E
C and C++
\u032E
C#
\u032E
CSS
\00032E
Excel
=UNICHAR(814)
Go
\u032E
JavaScript
\u032E
Modern JavaScript since ES6
\u{32e}
JSON
\u032E
Java
\u032E
Lua
\u{32E}
Matlab
char(814)
Perl
"\x{32E}"
PHP
\u{32e}
PostgreSQL
U&'\032E'
PowerShell
`u{32E}
Python
\u032E
Ruby
\u{32e}
Rust
\u{32e}
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