The glyph is not a composition. Its East Asian Width is narrow. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+0079 forms with similar adjacent characters prevents a line break inside it. The glyph can be confused with 35 other glyphs.
The Wikipedia has the following information about this codepoint:
Y, or y, is the twenty-fifth and penultimate letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. According to some authorities, it is the sixth (or seventh if including W) vowel letter of the English alphabet. Its name in English is wye (pronounced ), plural wyes.
In the English writing system, it mostly represents a vowel and seldom a consonant, and in other orthographies it may represent a vowel or a consonant.
Representations
System
Representation (click value to copy)
Nº
121
UTF-8
79
UTF-16
00 79
UTF-32
00 00 00 79
URL-Quoted
%79
HTML hex reference
y
Encoding: ASCII (hex bytes)
79
Encoding: BIG5 (hex bytes)
79
Encoding: BIG5HKSCS (hex bytes)
79
Encoding: CP037 (hex bytes)
A8
Encoding: CP273 (hex bytes)
A8
Encoding: CP424 (hex bytes)
A8
Encoding: CP437 (hex bytes)
79
Encoding: CP500 (hex bytes)
A8
Encoding: CP720 (hex bytes)
79
Encoding: CP737 (hex bytes)
79
Encoding: CP775 (hex bytes)
79
Encoding: CP850 (hex bytes)
79
Encoding: CP852 (hex bytes)
79
Encoding: CP855 (hex bytes)
79
Encoding: CP856 (hex bytes)
79
Encoding: CP857 (hex bytes)
79
Encoding: CP858 (hex bytes)
79
Encoding: CP860 (hex bytes)
79
Encoding: CP861 (hex bytes)
79
Encoding: CP862 (hex bytes)
79
Encoding: CP863 (hex bytes)
79
Encoding: CP864 (hex bytes)
79
Encoding: CP865 (hex bytes)
79
Encoding: CP866 (hex bytes)
79
Encoding: CP869 (hex bytes)
79
Encoding: CP874 (hex bytes)
79
Encoding: CP875 (hex bytes)
A8
Encoding: CP932 (hex bytes)
79
Encoding: CP949 (hex bytes)
79
Encoding: CP950 (hex bytes)
79
Encoding: CP1006 (hex bytes)
79
Encoding: CP1026 (hex bytes)
A8
Encoding: CP1125 (hex bytes)
79
Encoding: CP1140 (hex bytes)
A8
Encoding: CP1250 (hex bytes)
79
Encoding: CP1251 (hex bytes)
79
Encoding: CP1252 (hex bytes)
79
Encoding: CP1253 (hex bytes)
79
Encoding: CP1254 (hex bytes)
79
Encoding: CP1255 (hex bytes)
79
Encoding: CP1256 (hex bytes)
79
Encoding: CP1257 (hex bytes)
79
Encoding: CP1258 (hex bytes)
79
Encoding: EUC_JP (hex bytes)
79
Encoding: EUC_JIS_2004 (hex bytes)
79
Encoding: EUC_JISX0213 (hex bytes)
79
Encoding: EUC_KR (hex bytes)
79
Encoding: GB2312 (hex bytes)
79
Encoding: GBK (hex bytes)
79
Encoding: GB18030 (hex bytes)
79
Encoding: HZ (hex bytes)
79
Encoding: ISO2022_JP (hex bytes)
79
Encoding: ISO2022_JP_1 (hex bytes)
79
Encoding: ISO2022_JP_2 (hex bytes)
79
Encoding: ISO2022_JP_2004 (hex bytes)
79
Encoding: ISO2022_JP_3 (hex bytes)
79
Encoding: ISO2022_JP_EXT (hex bytes)
79
Encoding: ISO2022_KR (hex bytes)
79
Encoding: LATIN_1 (hex bytes)
79
Encoding: ISO8859_2 (hex bytes)
79
Encoding: ISO8859_3 (hex bytes)
79
Encoding: ISO8859_4 (hex bytes)
79
Encoding: ISO8859_5 (hex bytes)
79
Encoding: ISO8859_6 (hex bytes)
79
Encoding: ISO8859_7 (hex bytes)
79
Encoding: ISO8859_8 (hex bytes)
79
Encoding: ISO8859_9 (hex bytes)
79
Encoding: ISO8859_10 (hex bytes)
79
Encoding: ISO8859_11 (hex bytes)
79
Encoding: ISO8859_13 (hex bytes)
79
Encoding: ISO8859_14 (hex bytes)
79
Encoding: ISO8859_15 (hex bytes)
79
Encoding: ISO8859_16 (hex bytes)
79
Encoding: JOHAB (hex bytes)
79
Encoding: KOI8_R (hex bytes)
79
Encoding: KOI8_T (hex bytes)
79
Encoding: KOI8_U (hex bytes)
79
Encoding: KZ1048 (hex bytes)
79
Encoding: MAC_CYRILLIC (hex bytes)
79
Encoding: MAC_GREEK (hex bytes)
79
Encoding: MAC_ICELAND (hex bytes)
79
Encoding: MAC_LATIN2 (hex bytes)
79
Encoding: MAC_ROMAN (hex bytes)
79
Encoding: MAC_TURKISH (hex bytes)
79
Encoding: PTCP154 (hex bytes)
79
Encoding: SHIFT_JIS (hex bytes)
79
Encoding: SHIFT_JIS_2004 (hex bytes)
79
Encoding: SHIFT_JISX0213 (hex bytes)
79
Encoding: CP037 (hex bytes)
A8
Encoding: CP1025 (hex bytes)
A8
Encoding: CP1047 (hex bytes)
A8
Encoding: CP1097 (hex bytes)
A8
Encoding: CP1112 (hex bytes)
A8
Encoding: CP1122 (hex bytes)
A8
Encoding: CP1123 (hex bytes)
A8
Encoding: CP1140 (hex bytes)
A8
Encoding: CP1141 (hex bytes)
A8
Encoding: CP1142 (hex bytes)
A8
Encoding: CP1143 (hex bytes)
A8
Encoding: CP1144 (hex bytes)
A8
Encoding: CP1145 (hex bytes)
A8
Encoding: CP1146 (hex bytes)
A8
Encoding: CP1147 (hex bytes)
A8
Encoding: CP1148 (hex bytes)
A8
Encoding: CP1148MS (hex bytes)
A8
Encoding: CP1149 (hex bytes)
A8
Encoding: CP273 (hex bytes)
A8
Encoding: CP277 (hex bytes)
A8
Encoding: CP278 (hex bytes)
A8
Encoding: CP280 (hex bytes)
A8
Encoding: CP284 (hex bytes)
A8
Encoding: CP285 (hex bytes)
A8
Encoding: CP290 (hex bytes)
B8
Encoding: CP297 (hex bytes)
A8
Encoding: CP420 (hex bytes)
A8
Encoding: CP424 (hex bytes)
A8
Encoding: CP500 (hex bytes)
A8
Encoding: CP500MS (hex bytes)
A8
Encoding: CP833 (hex bytes)
A8
Encoding: CP838 (hex bytes)
A8
Encoding: CP870 (hex bytes)
A8
Encoding: CP871 (hex bytes)
A8
Encoding: CP875 (hex bytes)
A8
AGL: Latin-1
y
AGL: Latin-2
y
AGL: Latin-3
y
AGL: Latin-4
y
AGL: Latin-5
y
Adobe Glyph List
y
digraph
y
RFC 5137
\u'0079'
Bash and Zsh inside echo -e
\u0079
C and C++
\u0079
C#
\u0079
CSS
\000079
Excel
=UNICHAR(121)
Go
\u0079
JavaScript
\u0079
Modern JavaScript since ES6
\u{79}
JSON
\u0079
Java
\u0079
Lua
\u{79}
Matlab
char(121)
Perl
"\x{79}"
PHP
\u{79}
PostgreSQL
U&'\0079'
PowerShell
`u{79}
Python
\u0079
Ruby
\u{79}
Rust
\u{79}
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