This character is a Nonspacing Mark and is mainly used in the Hebrew script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Nonspacing Mark. When changing direction it is not mirrored. U+05B8 prohibits a line break before it.
The Wikipedia has the following information about this codepoint:
Kamatz or qamatz (Modern Hebrew: קָמָץ, IPA:[kaˈmats]; alternatively קָמֶץqāmeṣ) is a Hebrew niqqud (vowel) sign represented by two perpendicular lines (looking like an uppercase T) ⟨ ָ ⟩ underneath a letter. In modern Hebrew, it usually indicates the phoneme /a/ which is the "a" sound in the word spa and is transliterated as a. In these cases, its sound is identical to the sound of pataḥ in modern Hebrew. In a minority of cases it indicates the phoneme /o/, equal to the sound of ḥolam. In traditional Ashkenazi Hebrew pronunciation, qamatz is pronounced as the phoneme /ɔ/, which becomes /u/ in some contexts in southern Ashkenazi dialects.
Representations
System
Representation (click value to copy)
Nº
1464
UTF-8
D6 B8
UTF-16
05 B8
UTF-32
00 00 05 B8
URL-Quoted
%D6%B8
HTML hex reference
ָ
Wrong windows-1252 Mojibake
◌ָ
Encoding: CP1255 (hex bytes)
C8
Encoding: GB18030 (hex bytes)
81 30 F6 38
Adobe Glyph List
afii57797
Adobe Glyph List
qamats
Adobe Glyph List
qamats10
Adobe Glyph List
qamats1a
Adobe Glyph List
qamats1c
Adobe Glyph List
qamats27
Adobe Glyph List
qamats29
Adobe Glyph List
qamats33
Adobe Glyph List
qamatsde
Adobe Glyph List
qamatshebrew
Adobe Glyph List
qamatsnarrowhebrew
Adobe Glyph List
qamatsqatanhebrew
Adobe Glyph List
qamatsqatannarrowhebrew
Adobe Glyph List
qamatsqatanquarterhebrew
Adobe Glyph List
qamatsqatanwidehebrew
Adobe Glyph List
qamatsquarterhebrew
Adobe Glyph List
qamatswidehebrew
RFC 5137
\u'05B8'
Bash and Zsh inside echo -e
\u05B8
C and C++
\u05B8
C#
\u05B8
CSS
\0005B8
Excel
=UNICHAR(1464)
Go
\u05B8
JavaScript
\u05B8
Modern JavaScript since ES6
\u{5b8}
JSON
\u05B8
Java
\u05B8
Lua
\u{5B8}
Matlab
char(1464)
Perl
"\x{5B8}"
PHP
\u{5b8}
PostgreSQL
U&'\05B8'
PowerShell
`u{5B8}
Python
\u05B8
Ruby
\u{5b8}
Rust
\u{5b8}
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