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Apr 21, 2024
Record Holders and Extremes / Breaking and Gluing other characters
- U+3106C CJK UNIFIED IDEOGRAPH 3106C - the character with the most strokes: 84. Take your time to write this one!
Jul 24, 2022
Other Lists of Code Points / Games
- Cross-platform terminal characters (⭐210) - a list of characters that work on most terminals.
Dec 17, 2020
Code Points that Affect Others
The Regional Indicator Symbols U+1F1E6 to U+1F1FF resemble the 26 latin characters. They are used to create flag emoji. Since the Unicode consortium didn’t feel like getting on board with international politics, the solution to flags is to combine these 26 characters to the respective ISO code for a country. Examples:
Country ISO Code Code Points Emoji (if supported) USA US U+1F1FA + U+1F1F8 Germany DE U+1F1E9 + U+1F1EA China CN U+1F1E8 + U+1F1F3
Record Holders and Extremes / Breaking and Gluing other characters
- A close second place in this regard goes to the CJK unified ideographs 妛, 挧, 暃, 椦, 槞, 蟐, 袮, 閠, 駲, 墸, 壥, and 彁. These so-called “ghost characters” came to Unicode via the Japanese JIS standard, where they were added, because they were mis-read or misinterpreted from other signs, when JIS was compiled from original printed text sources.
Dec 16, 2020
Standalone Code Points
- U+FF03 FULLWIDTH NUMBER SIGN - it is the
"Japanese Hashtag"
＃. Sites like Twitter accept it as equivalent to the regular#(U+0023).
Record Holders and Extremes / Breaking and Gluing other characters
- U+1FBA8 BOX DRAWINGS LIGHT DIAGONAL UPPER CENTRE TO MIDDLE LEFT AND MIDDLE RIGHT TO LOWER CENTRE and U+1FBA9 BOX DRAWINGS LIGHT DIAGONAL UPPER CENTRE TO MIDDLE RIGHT AND MIDDLE LEFT TO LOWER CENTRE - longest name: 88 characters each.
Feb 04, 2018
Record Holders and Extremes / Breaking and Gluing other characters
Nov 16, 2017
Record Holders and Extremes / Breaking and Gluing other characters
- U+10FFFF (non-character) - last code point. The whole rest of its plane apart from U+10FFFE, the code points in the 0x10000-0x10FFFD range, are private use characters, guaranteed to be never filled by a future Unicode standard.
May 16, 2017
For Funsies / Breaking and Gluing other characters
- U+2800 BRAILLE PATTERN BLANK - A Braille pattern that has zero of its six or eight dots filled in. According to the standard: “* while this character is imaged as a fixed-width blank in many fonts, it does not act as a space” Essentially it is rendered as white-space, but since it is designated as not white-space it isn't matched by white-space-validating regular expressions. This can be used to bypass all kinds of validation that disallows or trims white-space.
Nov 18, 2016
Code Points that Affect Others
- U+FE0F VARIATION SELECTOR-16 - force colorful emoji. If this code point follows an emoji, an explicit colorful rendering of the emoji is requested (if the client supports it).
Nov 26, 2015
Record Holders and Extremes / Breaking and Gluing other characters
- U+006F LATIN SMALL LETTER O - leads the list of characters with confusable shapes. Of all the possible mappings in the list of confusable characters, the small “o” leads with a whopping 73 entries of similar looking glyphs, followed by U+006C LATIN SMALL LETTER L with 70 entries.
Oct 26, 2015
Code Points that Affect Others
Skin color of emoji: There are five code points, that control the skin color of emoji, U+1F3FB to U+1F3FF. They are called “Emoji Modifier Fitzpatrick Type” 1 to 6, with 1 the palest and 6 the darkest. If one of these characters follows an emoji, that emoji is meant to be rendered in the appropriate skin color of the Fitzpatrick scale. If no such modifier is added, the skin tone should be unnatural, e. g., bright yellow. Fun fact: Since the Fitzpatrick modifiers are normal code points, emoji with such skin colors have the length 2, which Twitter users noticed first. Here is a comparison chart directly from the specification:
Code Name Samples U+1F3FB EMOJI MODIFIER FITZPATRICK TYPE-1-2 
U+1F3FC EMOJI MODIFIER FITZPATRICK TYPE-3 
U+1F3FD EMOJI MODIFIER FITZPATRICK TYPE-4 
U+1F3FE EMOJI MODIFIER FITZPATRICK TYPE-5 
U+1F3FF EMOJI MODIFIER FITZPATRICK TYPE-6 
Oct 21, 2015
Standalone Code Points
- U+FFFD REPLACEMENT CHARACTER - when a character cannot be displayed (e.g., decoding an erroneous UTF-8 sequency), this code point steps into the breach.
Record Holders and Extremes / Breaking and Gluing other characters
- U+0000 <control> - first code point.
For Funsies / Breaking and Gluing other characters
- U+1DD2 COMBINING US ABOVE - this is the most romantic code point.
- U+F8FF PRIVATE USE CODEPOINT - this private use code point is rendered as Apple logo on many Apple devices.
Oct 19, 2015
Code Points that Affect Others
- U+FE0E VARIATION SELECTOR-15 - force black-&-white emoji. If this code point follows an emoji, an explicit monochrome rendering of the emoji is requested (if the client supports it).
Code Points that Affect Others / Breaking and Gluing other characters
- U+00A0 NO-BREAK SPACE - force adjacent
characters to stick together. Well known as
in HTML.
- U+00AD SOFT HYPHEN - (in HTML:
­) like ZERO WIDTH SPACE, but show a hyphen if (and only if) a break occurs.
- U+200B ZERO WIDTH SPACE - the inverse to U+00A0: create no space, but allow word breaking.
- U+200D ZERO WIDTH JOINER - force adjacent characters to be joined together (e.g., arabic characters or supported emoji). Apple uses this to compose some emoji like different families.
- U+2060 WORD JOINER - the same as
U+00A0, but completely invisible. Good for writing
@font-faceon Twitter.
Oct 17, 2015
Record Holders and Extremes / Breaking and Gluing other characters
- U+0F33 TIBETAN DIGIT HALF ZERO - code point that represents the lowest “single-digit” number and at the same time the only negative one, -½.
- The trophy for most useless code points goes to U+0080, U+0081 and U+0099. These so-called C1 control characters are more or less unspecified. They got into Unicode, because they were present in the very first version of what should later become ISO 10646, the ISO-standardized version of Unicode. They were meant to be part of an upgrade to ISO 2022, that never came to be.
Oct 16, 2015
Standalone Code Points
- U+FEFF ZERO WIDTH NO-BREAK SPACE - it’s name suggests, that it can be used like U+2060 WORD JOINER. And in fact the latter was introduced to inherit its semantics. This is because U+FEFF had become a special beacon called the byte order mark, that was placed on the beginning of some UTF-8 files. In complying software (including many text editors) this character is stripped from the start of a file and handled as metadata. In non-complying software (like the PHP interpreter) this leads to all sorts of fun behaviour.
Record Holders and Extremes / Breaking and Gluing other characters
- U+5146 and U+16B61 - code points that represent the highest “single-digit” number. In both cases that’s 1,000,000,000,000, a trillion.
For Funsies / Games
- Card suits and even a whole deck of cards complete with joker and back of card.
Oct 15, 2015
Standalone Code Points
The code points of the Unicode blocks Box Drawing (U+2500 to U+257F) and Block Elements (U+2580 to U+259F) cover most of your monospace command-line visualization needs.
╭───────╮ │Unicode│ │rules! │ ╰┬─────┬╯
- U+2E2E REVERSED QUESTION MARK - the “irony mark” to express irony/sarcasm. A useful character⸮
- U+D800 to U+DFFF - surrogate code points. They are only reserved to ease UTF-16 encoding.
- U+1D455 is missing. It would be an italic small “h”. It was not encoded, because it would be identical to the Planck constant ℎ (U+210E).
Code Points that Affect Others
Diacritics and combining marks: There is a host of characters, that add to the characters before. Those are called Combining Marks. Unicode provides a handy FAQ on the details, but in a nutshell: If you add one after a character, it is placed on top of that previous one. So,
a + ̊ = å. This may lead to all kinds of funny problems, because for some combinations there are pre-composed characters. Our littleåhere can also be encoded as U+00E5. You might note, that while this has a length of one character, the combination ofaand combining ring has a length of two characters.Of course, one can also do fun things with those characters like this answer on StackOverflow.
Record Holders and Extremes / Breaking and Gluing other characters
- U+1F402 OX - shortest name.
- U+FDFA ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM - longest decomposition form: 18 characters.
For Funsies / Breaking and Gluing other characters
- U+1680 OGHAM SPACE MARK - a space that looks
like a dash. Great to bring programmers close to madness:
1 + 2 === 3.
- U+037E GREEK QUESTION MARK - a look-alike to the semicolon. Also a fun way to annoy developers.
- U+1F574 MAN IN BUSINESS SUIT LEVITATING - A rather curious character, that only made it into Unicode for its appearance in the Webdings font (for reasons of backwards compatibility).
- U+1F596 RAISED HAND WITH PART BETWEEN MIDDLE AND RING FINGERS - the Vulcan salute. Live long and prosper!
- U+1F918 SIGN OF THE HORNS - Rock on! 落
Oct 09, 2015
Code Points that Affect Others
