Unicode

• spec
  • UNICODE TEXT SEGMENTATION
  • COMMON REFERENCES FOR UNICODE STANDARD ANNEXES
• Unicode character property
• https://unicodebook.readthedocs.io/unicode.html
• https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms
  • U+FF00–FFEF
• https://altcodeunicode.com/
• Language codes https://www.ibm.com/docs/en/content-manager/8.6.0?topic=definition-language-codes
• https://shapecatcher.com/
  • 符号识别

https://zh.wikipedia.org/wiki/ISO_639-1%E4%BB%A3%E7%A0%81%E8%A1%A8

https://en.wikipedia.org/wiki/Language_code

Unicode Character Ranges CJK Unified Ideographs (Unicode block) What's the complete range for Chinese characters in Unicode?

1.	U+4E00 - U+62FF

Block                                   Range       Comment
CJK Unified Ideographs                  4E00-9FFF   Common
CJK Unified Ideographs Extension A      3400-4DBF   Rare
CJK Unified Ideographs Extension B      20000-2A6DF Rare, historic
CJK Unified Ideographs Extension C      2A700–2B73F Rare, historic
CJK Unified Ideographs Extension D      2B740–2B81F Uncommon, some in current use
CJK Unified Ideographs Extension E      2B820–2CEAF Rare, historic
CJK Compatibility Ideographs            F900-FAFF   Duplicates, unifiable variants, corporate characters
CJK Compatibility Ideographs Supplement 2F800-2FA1F Unifiable variants

Detech language https://cloud.google.com/translate/docs/reference/rest

https://github.com/git/git/tree/master/po

• https://datahub.io/core/language-codes

Symbol

• 数学
  • +−×÷±≤≥≈
• ⤷⤵︎⤴︎⤶
• ✓✔︎𐄂✔️✅
• ✅❌❓❔❗️❕❎⚠️
• 📝

Blank and Fill Symbols

State	Symbol	Description
Blank	⬜️	White Large Square
Fill	⬛️	Black Large Square
Blank	⚪️	White Circle
Fill	⚫️	Black Circle
Blank	☐	Ballot Box
Fill	☑	Ballot Box with Check
Blank	🔲	Black Square Button
Fill	🔳	White Square Button

Dashes and Hyphens

Glyph	Name	Alias	HTML Entity
-	Hyphen-Minus	-
‐	Hyphen		‐
‑	Non-Breaking Hyphen		‑
‒	Figure Dash		‒
–	En Dash	--	–
—	Em Dash	---	—
―	Horizontal Bar		―
⸺	Two-Em Dash		⸺
⸻	Three-Em Dash		⸻

Emoji

• https://github.com/github/gemoji
• https://dev.to/jorik/country-code-to-flag-emoji-a21

CJK

• U+4E00–U+9FA5 - 20,902 汗字, Unicode 1.0.1, Unified Repertoire and Ordering, URO
• CJK Unified Ideographs
• 现代汉语与日语最常用的汉字
• https://zh.wikipedia.org/wiki/中日韓統一表意文字列表

Unicode character class

• https://pkg.go.dev/regexp/syntax

Currency symbols

| sym | Name | Unicode | UTF-8 | | --- | ----------- | ------- | ------ | ------ | | € | euro sign | 20AC | E282AC | 欧元 | | $ | dollar sign | 0024 | 24 | 美元 | | ¢ | cent sign | 00A2 | C2A2 | 分 | | £ | pound sign | 00A3 | C2A3 | 英镑 | | ¥ | yen sign | 00A5 | C2A5 | 人民币 | | ƒ | | 0192 | C692 |

sym	Ticker	name
₿	BTC	bitcoin
Ξ	ETH	Ethereum
⟠	ETH	Ethereum
₮	USDT	Tether
ξ	ETC	Ethereum Classic
Ł	LTC	Litecoin
◈	DAI	Dai
Ƀ	BCH	Bitcoin Cash

• https://github.com/yonilevy/crypto-currency-symbols
• https://en.wikipedia.org/wiki/Currency_symbol
• https://unicode-explorer.com/articles/cryptocurrency-unicode-symbols

Keyboard

sym	name	code point
⌘	Command	U+2318
⇧	Shift	U+21E7
⇮	Alt,Option	U+2325
⎇	Alt	U+2387
⌥	Alt - Apple macOS	U+2325
◆	Alt - Sun Microsystems Type 6 Keyboard	U+25C6
⎈	Ctrl,HELM	U+2388
⇬	CapsLock	U+21EA
⎆	Enter	U+23B6
	Option	U+005E
⌃	Option	U+2303
❖	Windows	U+2756
↩ ↵ ⏎	Enter	U+21A9
▤ ☰ 𝌆	Menu	U+25A0
↹ ⇥	Tab	U+21B9
⇥	Tab	U+21B9
⇄ ⇤ ↤ ↦	Tab symbol	U+21C4
⎋	ESC	U+238B
⌫ ⟵	Backspace	U+232B
🌐	Apple fn	U+1F5A0
⌦	Delete	U+2326
⌧	Clear	U+2327
⌤	Enter	U+23B6
⏏	Eject	U+23CF
⎀	Power	U+2380

• http://xahlee.info/kbd/apple_keyboard_key_symbols.html
• http://xahlee.info/comp/unicode_computing_symbols.html
• https://github.com/drmingdrmer/cheatsheet/blob/master/sheets/unicode/from-xahlee-info/keyboard-keys.txt

希腊字母

sym	upper	for
α	Α	alpha
β	Β	beta
γ	Γ	gamma
δ	Δ	delta
ε	Ε	epsilon
ζ	Ζ	zeta
η	Η	eta
θ	Θ	theta
ι	Ι	iota
κ	Κ	kappa
λ	Λ	lambda
μ	Μ	mu
ν	Ν	nu
ξ	Ξ	xi
ο	Ο	omicron
π	Π	pi
ρ	Ρ	rho
σ	Σ	sigma
τ	Τ	tau
υ	Υ	upsilon
φ	Φ	phi
χ	Χ	chi
ψ	Ψ	psi
ω	Ω	omega

• https://unicode-table.com/cn/sets/greek-symbols/

罗马数字

sym	num
I	1
V	5
X	10
L	50
C	100
D	500
M	1000

• 小的在前面是减法，大的在前面是加法
  • 11 -> XI
  • 4 -> IV

常用

sym	a	b
🚧
🌟
⚠️
❌
✅
📝
✨
💵
💰
💴
🏷
💬
🛒
📆
⚡️

»	»	&187;
«	«	&171;
🏘️
👨‍👩‍👧‍👦
⚠️
ℹ️
📝

避免渲染 emoji

• ✔
• FE0E 避免渲染 emoji \2714\FE0E
• font-family: monospace

❤︎

space

•     ‌‍

math

sym	name	html	latex
+	plus	+	$+$
-	minus	−	$-$
*	times		$\times$
×	times	×	$\times$
/	divide		$\div$
÷	divide	÷	$\div$
=	equal	&equal;	$=$
<	less than	&less than;	$<$
>	greater than	&greater than;	$>$
<=	less than or equal to	&less than or equal to;	$\leq$
>=	greater than or equal to	&greater than or equal to;	$\geq$