Unicode properties

Pomsky supports the following kinds of Unicode properties:

General categories
Scripts
Script extensions
Blocks
Other boolean properties

However, not all regex engines support all of them. In particular, blocks and other properties are poorly supported.

Prefixes

You may add a prefix to properties to indicate what kind of property it is:

gc: or general_category: indicates a general category
script: or sc: indicates a script
script_extensions: or scx: indicates script extensions
block: or blk: indicates a block

[gc:Letter]   # the "Letter" general category
[scx:Greek]   # the "Greek" script extensions

Except for blocks, these prefixes are optional, so you can write [Letter] and [Greek] if you prefer.

General Categories

Every Unicode code point is in one of the following General Categories:

Letter
Mark
Number
Punctuation
Symbol
Separator
Other

Each of these categories is subdivided into smaller categories. More information on Wikipedia.

In Pomsky, you can match against categories in square brackets:

[Uppercase_Letter Mark]

Using the abbreviations, the above can be written as

[Lu M]

Show all 38 categories

Abbr	Long	Description
`Lu`	`Uppercase_Letter`	an uppercase letter
`Ll`	`Lowercase_Letter`	a lowercase letter
`Lt`	`Titlecase_Letter`	a digraphic character (e.g. ‘ǅ’), first part uppercase
`LC`	`Cased_Letter`	`Lu` \| `Ll` \| `Lt`
`Lm`	`Modifier_Letter`	a modifier letter
`Lo`	`Other_Letter`	other letters, including syllables and ideographs
`L`	`Letter`	`Lu` \| `Ll` \| `Lt` \| `Lm` \| `Lo`
`Mn`	`Nonspacing_Mark`	a nonspacing combining mark (zero advance width)
`Mc`	`Spacing_Mark`	a spacing combining mark (positive advance width)
`Me`	`Enclosing_Mark`	an enclosing combining mark
`M`	`Mark`	`Mn` \| `Mc` \| `Me`
`Nd`	`Decimal_Number`	a decimal digit
`Nl`	`Letter_Number`	a letterlike numeric character
`No`	`Other_Number`	a numeric character of other type
`N`	`Number`	`Nd` \| `Nl` \| `No`
`Pc`	`Connector_Punctuation`	a connecting punctuation mark, like a tie
`Pd`	`Dash_Punctuation`	a dash or hyphen punctuation mark
`Ps`	`Open_Punctuation`	an opening punctuation mark (of a pair)
`Pe`	`Close_Punctuation`	a closing punctuation mark (of a pair)
`Pi`	`Initial_Punctuation`	an initial quotation mark
`Pf`	`Final_Punctuation`	a final quotation mark
`Po`	`Other_Punctuation`	a punctuation mark of other type
`P`	`Punctuation`	`Pc` \| `Pd` \| `Ps` \| `Pe` \| `Pi` \| `Pf` \| `Po`
`Sm`	`Math_Symbol`	a symbol of mathematical use
`Sc`	`Currency_Symbol`	a currency sign
`Sk`	`Modifier_Symbol`	a non-letterlike modifier symbol
`So`	`Other_Symbol`	a symbol of other type
`S`	`Symbol`	`Sm` \| `Sc` \| `Sk` \| `So`
`Zs`	`Space_Separator`	a space character (of various non-zero widths)
`Zl`	`Line_Separator`	U+2028 LINE SEPARATOR only
`Zp`	`Paragraph_Separator`	U+2029 PARAGRAPH SEPARATOR only
`Z`	`Separator`	`Zs` \| `Zl` \| `Zp`
`Cc`	`Control`	a C0 or C1 control code
`Cf`	`Format`	a format control character
`Cs`	`Surrogate`	a surrogate code point ⚠️ not supported in Rust
`Co`	`Private_Use`	a private-use character
`Cn`	`Unassigned`	a reserved unassigned code point or a noncharacter
`C`	`Other`	`Cc` \| `Cf` \| `Cs` \| `Co` \| `Cn`

Support

PCRE	JS	Java	Ruby	Rust	.NET	Python	RE2
✅	✅	✅	✅	✅	✅	⛔	✅

Rust does not support the Surrogate category, because it is always Unicode aware and UTF-16 surrogates are not valid Unicode scalar values.

Scripts

A script is a collection of code points used to represent textual information in one or more writing systems.

As with categories, code points can only be assigned to a single script. Code points used in multiple scripts are therefore assigned to the special Common or Inherited scripts. More information on Wikipedia.

Show all 164 scripts

Abbr	Long / Notes
`Adlm`	`Adlam`
`Aghb`	`Caucasian_Albanian`
`Ahom`	`Ahom`
`Arab`	`Arabic`
`Armi`	`Imperial_Aramaic`
`Armn`	`Armenian`
`Avst`	`Avestan`
`Bali`	`Balinese`
`Bamu`	`Bamum`
`Bass`	`Bassa_Vah`
`Batk`	`Batak`
`Beng`	`Bengali`
`Bhks`	`Bhaiksuki`
`Bopo`	`Bopomofo`
`Brah`	`Brahmi`
`Brai`	`Braille`
`Bugi`	`Buginese`
`Buhd`	`Buhid`
`Cakm`	`Chakma`
`Cans`	`Canadian_Aboriginal`
`Cari`	`Carian`
`Cham`	`Cham`
`Cher`	`Cherokee`
`Chrs`	`Chorasmian`
`Copt`	`Coptic`, `Qaac`
`Cpmn`	`Cypro_Minoan`
`Cprt`	`Cypriot`
`Cyrl`	`Cyrillic`
`Deva`	`Devanagari`
`Diak`	`Dives_Akuru`
`Dogr`	`Dogra`
`Dsrt`	`Deseret`
`Dupl`	`Duployan`
`Egyp`	`Egyptian_Hieroglyphs`
`Elba`	`Elbasan`
`Elym`	`Elymaic`
`Ethi`	`Ethiopic`
`Geor`	`Georgian`
`Glag`	`Glagolitic`
`Gong`	`Gunjala_Gondi`
`Gonm`	`Masaram_Gondi`
`Goth`	`Gothic`
`Gran`	`Grantha`
`Grek`	`Greek`
`Gujr`	`Gujarati`
`Guru`	`Gurmukhi`
`Hang`	`Hangul`
`Hani`	`Han`
`Hano`	`Hanunoo`
`Hatr`	`Hatran`
`Hebr`	`Hebrew`
`Hira`	`Hiragana`
`Hluw`	`Anatolian_Hieroglyphs`
`Hmng`	`Pahawh_Hmong`
`Hmnp`	`Nyiakeng_Puachue_Hmong`
`Hung`	`Old_Hungarian`
`Ital`	`Old_Italic`
`Java`	`Javanese`
`Kali`	`Kayah_Li`
`Kana`	`Katakana`
`Kawi`	`Kawi`
`Khar`	`Kharoshthi`
`Khmr`	`Khmer`
`Khoj`	`Khojki`
`Kits`	`Khitan_Small_Script`
`Knda`	`Kannada`
`Kthi`	`Kaithi`
`Lana`	`Tai_Tham`
`Laoo`	`Lao`
`Latn`	`Latin`
`Lepc`	`Lepcha`
`Limb`	`Limbu`
`Lina`	`Linear_A`
`Linb`	`Linear_B`
`Lisu`	`Lisu`
`Lyci`	`Lycian`
`Lydi`	`Lydian`
`Mahj`	`Mahajani`
`Maka`	`Makasar`
`Mand`	`Mandaic`
`Mani`	`Manichaean`
`Marc`	`Marchen`
`Medf`	`Medefaidrin`
`Mend`	`Mende_Kikakui`
`Merc`	`Meroitic_Cursive`
`Mero`	`Meroitic_Hieroglyphs`
`Mlym`	`Malayalam`
`Modi`	`Modi`
`Mong`	`Mongolian`
`Mroo`	`Mro`
`Mtei`	`Meetei_Mayek`
`Mult`	`Multani`
`Mymr`	`Myanmar`
`Nagm`	`Nag_Mundari`
`Nand`	`Nandinagari`
`Narb`	`Old_North_Arabian`
`Nbat`	`Nabataean`
`Newa`	`Newa`
`Nkoo`	`Nko`
`Nshu`	`Nushu`
`Ogam`	`Ogham`
`Olck`	`Ol_Chiki`
`Orkh`	`Old_Turkic`
`Orya`	`Oriya`
`Osge`	`Osage`
`Osma`	`Osmanya`
`Ougr`	`Old_Uyghur`
`Palm`	`Palmyrene`
`Pauc`	`Pau_Cin_Hau`
`Perm`	`Old_Permic`
`Phag`	`Phags_Pa`
`Phli`	`Inscriptional_Pahlavi`
`Phlp`	`Psalter_Pahlavi`
`Phnx`	`Phoenician`
`Plrd`	`Miao`
`Prti`	`Inscriptional_Parthian`
`Rjng`	`Rejang`
`Rohg`	`Hanifi_Rohingya`
`Runr`	`Runic`
`Samr`	`Samaritan`
`Sarb`	`Old_South_Arabian`
`Saur`	`Saurashtra`
`Sgnw`	`SignWriting`
`Shaw`	`Shavian`
`Shrd`	`Sharada`
`Sidd`	`Siddham`
`Sind`	`Khudawadi`
`Sinh`	`Sinhala`
`Sogd`	`Sogdian`
`Sogo`	`Old_Sogdian`
`Sora`	`Sora_Sompeng`
`Soyo`	`Soyombo`
`Sund`	`Sundanese`
`Sylo`	`Syloti_Nagri`
`Syrc`	`Syriac`
`Tagb`	`Tagbanwa`
`Takr`	`Takri`
`Tale`	`Tai_Le`
`Talu`	`New_Tai_Lue`
`Taml`	`Tamil`
`Tang`	`Tangut`
`Tavt`	`Tai_Viet`
`Telu`	`Telugu`
`Tfng`	`Tifinagh`
`Tglg`	`Tagalog`
`Thaa`	`Thaana`
`Thai`	`Thai`
`Tibt`	`Tibetan`
`Tirh`	`Tirhuta`
`Tnsa`	`Tangsa`
`Toto`	`Toto`
`Ugar`	`Ugaritic`
`Vaii`	`Vai`
`Vith`	`Vithkuqi`
`Wara`	`Warang_Citi`
`Wcho`	`Wancho`
`Xpeo`	`Old_Persian`
`Xsux`	`Cuneiform`
`Yezi`	`Yezidi`
`Yiii`	`Yi`
`Zanb`	`Zanabazar_Square`
`Zinh`	`Inherited`
`Zyyy`	`Common`
`Zzzz`	`Unknown` ⚠️ not supported by Rust

Support

PCRE	JS	Java	Ruby	Rust	.NET	Python	RE2
✅	✅	✅	✅	✅	⛔	⛔	✅

Zzzz (Unknown) is not supported in Rust.

Script Extensions

Script extensions are similar to scripts; the difference is that script extensions can overlap, whereas scripts can not.

For example, the code point U+064B is used both in the Arab and Syriac script, so it is matched by both [scx:Arab] and [scx:Syriac]. If your regex flavor supports script extensions, they should almost always be preferred over scripts.

The list of script extensions is the same as the list of scripts.

Support

PCRE	JS	Java	Ruby	Rust	.NET	Python	RE2
✅	✅	⛔	⛔	✅	⛔	⛔	⛔

Blocks

The Unicode character set is divided into blocks of consecutive code points that usually belong to the same script or serve a similar purpose.

There are often multiple blocks for a script. For example, there are 10 designated blocks for Latin code points: Basic_Latin, Latin_1_Supplement, Latin_Extended_Additional, and Latin_Extended_A through Latin_Extended_G. Furthermore, many blocks contain two or more scripts, which is not always clear from the name. For example, Latin_Extended_E includes a Greek code point.

Therefore, it is almost always better to use the script rather than the block, but Pomsky still supports blocks.

Blocks have to be prefixed with blk: or block:. Originally, blocks were prefixed with In, but this might be deprecated in the future:

# matches code points in the `Basic_Latin` block:
[blk:Basic_Latin]
# equivalent, but not recommended:
[InBasic_Latin]

Show all 328 blocks

Names
`Adlam`
`Aegean_Numbers`
`Ahom`
`Alchemical`, `Alchemical_Symbols`
`Alphabetic_PF`, `Alphabetic_Presentation_Forms`
`Anatolian_Hieroglyphs`
`Ancient_Greek_Music`, `Ancient_Greek_Musical_Notation`
`Ancient_Greek_Numbers`
`Ancient_Symbols`
`Arabic`
`Arabic_Ext_A`, `Arabic_Extended_A`
`Arabic_Ext_B`, `Arabic_Extended_B`
`Arabic_Ext_C`, `Arabic_Extended_C`
`Arabic_Math`, `Arabic_Mathematical_Alphabetic_Symbols`
`Arabic_PF_A`, `Arabic_Presentation_Forms_A`
`Arabic_PF_B`, `Arabic_Presentation_Forms_B`
`Arabic_Sup`, `Arabic_Supplement`
`Armenian`
`Arrows`
`ASCII`, `Basic_Latin`
`Avestan`
`Balinese`
`Bamum`
`Bamum_Sup`, `Bamum_Supplement`
`Bassa_Vah`
`Batak`
`Bengali`
`Bhaiksuki`
`Block_Elements`
`Bopomofo`
`Bopomofo_Ext`, `Bopomofo_Extended`
`Box_Drawing`
`Brahmi`
`Braille`, `Braille_Patterns`
`Buginese`
`Buhid`
`Byzantine_Music`, `Byzantine_Musical_Symbols`
`Carian`
`Caucasian_Albanian`
`Chakma`
`Cham`
`Cherokee`
`Cherokee_Sup`, `Cherokee_Supplement`
`Chess_Symbols`
`Chorasmian`
`CJK`, `CJK_Unified_Ideographs`
`CJK_Compat`, `CJK_Compatibility`
`CJK_Compat_Forms`, `CJK_Compatibility_Forms`
`CJK_Compat_Ideographs`, `CJK_Compatibility_Ideographs`
`CJK_Compat_Ideographs_Sup`, `CJK_Compatibility_Ideographs_Supplement`
`CJK_Ext_A`, `CJK_Unified_Ideographs_Extension_A`
`CJK_Ext_B`, `CJK_Unified_Ideographs_Extension_B`
`CJK_Ext_C`, `CJK_Unified_Ideographs_Extension_C`
`CJK_Ext_D`, `CJK_Unified_Ideographs_Extension_D`
`CJK_Ext_E`, `CJK_Unified_Ideographs_Extension_E`
`CJK_Ext_F`, `CJK_Unified_Ideographs_Extension_F`
`CJK_Ext_G`, `CJK_Unified_Ideographs_Extension_G`
`CJK_Ext_H`, `CJK_Unified_Ideographs_Extension_H`
`CJK_Radicals_Sup`, `CJK_Radicals_Supplement`
`CJK_Strokes`
`CJK_Symbols`, `CJK_Symbols_And_Punctuation`
`Compat_Jamo`, `Hangul_Compatibility_Jamo`
`Control_Pictures`
`Coptic`
`Coptic_Epact_Numbers`
`Counting_Rod`, `Counting_Rod_Numerals`
`Cuneiform`
`Cuneiform_Numbers`, `Cuneiform_Numbers_And_Punctuation`
`Currency_Symbols`
`Cypriot_Syllabary`
`Cypro_Minoan`
`Cyrillic`
`Cyrillic_Ext_A`, `Cyrillic_Extended_A`
`Cyrillic_Ext_B`, `Cyrillic_Extended_B`
`Cyrillic_Ext_C`, `Cyrillic_Extended_C`
`Cyrillic_Ext_D`, `Cyrillic_Extended_D`
`Cyrillic_Sup`, `Cyrillic_Supplement`, `Cyrillic_Supplementary`
`Deseret`
`Devanagari`
`Devanagari_Ext`, `Devanagari_Extended`
`Devanagari_Ext_A`, `Devanagari_Extended_A`
`Diacriticals`, `Combining_Diacritical_Marks`
`Diacriticals_Ext`, `Combining_Diacritical_Marks_Extended`
`Diacriticals_For_Symbols`, `Combining_Diacritical_Marks_For_Symbols`, `Combining_Marks_For_Symbols`
`Diacriticals_Sup`, `Combining_Diacritical_Marks_Supplement`
`Dingbats`
`Dives_Akuru`
`Dogra`
`Domino`, `Domino_Tiles`
`Duployan`
`Early_Dynastic_Cuneiform`
`Egyptian_Hieroglyph_Format_Controls`
`Egyptian_Hieroglyphs`
`Elbasan`
`Elymaic`
`Emoticons`
`Enclosed_Alphanum`, `Enclosed_Alphanumerics`
`Enclosed_Alphanum_Sup`, `Enclosed_Alphanumeric_Supplement`
`Enclosed_CJK`, `Enclosed_CJK_Letters_And_Months`
`Enclosed_Ideographic_Sup`, `Enclosed_Ideographic_Supplement`
`Ethiopic`
`Ethiopic_Ext`, `Ethiopic_Extended`
`Ethiopic_Ext_A`, `Ethiopic_Extended_A`
`Ethiopic_Ext_B`, `Ethiopic_Extended_B`
`Ethiopic_Sup`, `Ethiopic_Supplement`
`Geometric_Shapes`
`Geometric_Shapes_Ext`, `Geometric_Shapes_Extended`
`Georgian`
`Georgian_Ext`, `Georgian_Extended`
`Georgian_Sup`, `Georgian_Supplement`
`Glagolitic`
`Glagolitic_Sup`, `Glagolitic_Supplement`
`Gothic`
`Grantha`
`Greek`, `Greek_And_Coptic`
`Greek_Ext`, `Greek_Extended`
`Gujarati`
`Gunjala_Gondi`
`Gurmukhi`
`Half_And_Full_Forms`, `Halfwidth_And_Fullwidth_Forms`
`Half_Marks`, `Combining_Half_Marks`
`Hangul`, `Hangul_Syllables`
`Hanifi_Rohingya`
`Hanunoo`
`Hatran`
`Hebrew`
`High_PU_Surrogates`, `High_Private_Use_Surrogates`
`High_Surrogates`
`Hiragana`
`IDC`, `Ideographic_Description_Characters`
`Ideographic_Symbols`, `Ideographic_Symbols_And_Punctuation`
`Imperial_Aramaic`
`Indic_Number_Forms`, `Common_Indic_Number_Forms`
`Indic_Siyaq_Numbers`
`Inscriptional_Pahlavi`
`Inscriptional_Parthian`
`IPA_Ext`, `IPA_Extensions`
`Jamo`, `Hangul_Jamo`
`Jamo_Ext_A`, `Hangul_Jamo_Extended_A`
`Jamo_Ext_B`, `Hangul_Jamo_Extended_B`
`Javanese`
`Kaithi`
`Kaktovik_Numerals`
`Kana_Ext_A`, `Kana_Extended_A`
`Kana_Ext_B`, `Kana_Extended_B`
`Kana_Sup`, `Kana_Supplement`
`Kanbun`
`Kangxi`, `Kangxi_Radicals`
`Kannada`
`Katakana`
`Katakana_Ext`, `Katakana_Phonetic_Extensions`
`Kawi`
`Kayah_Li`
`Kharoshthi`
`Khitan_Small_Script`
`Khmer`
`Khmer_Symbols`
`Khojki`
`Khudawadi`
`Lao`
`Latin_1_Sup`, `Latin_1_Supplement` , `Latin_1`
`Latin_Ext_A`, `Latin_Extended_A`
`Latin_Ext_Additional`, `Latin_Extended_Additional`
`Latin_Ext_B`, `Latin_Extended_B`
`Latin_Ext_C`, `Latin_Extended_C`
`Latin_Ext_D`, `Latin_Extended_D`
`Latin_Ext_E`, `Latin_Extended_E`
`Latin_Ext_F`, `Latin_Extended_F`
`Latin_Ext_G`, `Latin_Extended_G`
`Lepcha`
`Letterlike_Symbols`
`Limbu`
`Linear_A`
`Linear_B_Ideograms`
`Linear_B_Syllabary`
`Lisu`
`Lisu_Sup`, `Lisu_Supplement`
`Low_Surrogates`
`Lycian`
`Lydian`
`Mahajani`
`Mahjong`, `Mahjong_Tiles`
`Makasar`
`Malayalam`
`Mandaic`
`Manichaean`
`Marchen`
`Masaram_Gondi`
`Math_Alphanum`, `Mathematical_Alphanumeric_Symbols`
`Math_Operators`, `Mathematical_Operators`
`Mayan_Numerals`
`Medefaidrin`
`Meetei_Mayek`
`Meetei_Mayek_Ext`, `Meetei_Mayek_Extensions`
`Mende_Kikakui`
`Meroitic_Cursive`
`Meroitic_Hieroglyphs`
`Miao`
`Misc_Arrows`, `Miscellaneous_Symbols_And_Arrows`
`Misc_Math_Symbols_A`, `Miscellaneous_Mathematical_Symbols_A`
`Misc_Math_Symbols_B`, `Miscellaneous_Mathematical_Symbols_B`
`Misc_Pictographs`, `Miscellaneous_Symbols_And_Pictographs`
`Misc_Symbols`, `Miscellaneous_Symbols`
`Misc_Technical`, `Miscellaneous_Technical`
`Modi`
`Modifier_Letters`, `Spacing_Modifier_Letters`
`Modifier_Tone_Letters`
`Mongolian`
`Mongolian_Sup`, `Mongolian_Supplement`
`Mro`
`Multani`
`Music`, `Musical_Symbols`
`Myanmar`
`Myanmar_Ext_A`, `Myanmar_Extended_A`
`Myanmar_Ext_B`, `Myanmar_Extended_B`
`Nabataean`
`Nag_Mundari`
`Nandinagari`
`NB`, `No_Block`
`New_Tai_Lue`
`Newa`
`NKo`
`Number_Forms`
`Nushu`
`Nyiakeng_Puachue_Hmong`
`OCR`, `Optical_Character_Recognition`
`Ogham`
`Ol_Chiki`
`Old_Hungarian`
`Old_Italic`
`Old_North_Arabian`
`Old_Permic`
`Old_Persian`
`Old_Sogdian`
`Old_South_Arabian`
`Old_Turkic`
`Old_Uyghur`
`Oriya`
`Ornamental_Dingbats`
`Osage`
`Osmanya`
`Ottoman_Siyaq_Numbers`
`Pahawh_Hmong`
`Palmyrene`
`Pau_Cin_Hau`
`Phags_Pa`
`Phaistos`, `Phaistos_Disc`
`Phoenician`
`Phonetic_Ext`, `Phonetic_Extensions`
`Phonetic_Ext_Sup`, `Phonetic_Extensions_Supplement`
`Playing_Cards`
`Psalter_Pahlavi`
`PUA`, `Private_Use_Area`, `Private_Use`
`Punctuation`, `General_Punctuation`
`Rejang`
`Rumi`, `Rumi_Numeral_Symbols`
`Runic`
`Samaritan`
`Saurashtra`
`Sharada`
`Shavian`
`Shorthand_Format_Controls`
`Siddham`
`Sinhala`
`Sinhala_Archaic_Numbers`
`Small_Forms`, `Small_Form_Variants`
`Small_Kana_Ext`, `Small_Kana_Extension`
`Sogdian`
`Sora_Sompeng`
`Soyombo`
`Specials`
`Sundanese`
`Sundanese_Sup`, `Sundanese_Supplement`
`Sup_Arrows_A`, `Supplemental_Arrows_A`
`Sup_Arrows_B`, `Supplemental_Arrows_B`
`Sup_Arrows_C`, `Supplemental_Arrows_C`
`Sup_Math_Operators`, `Supplemental_Mathematical_Operators`
`Sup_PUA_A`, `Supplementary_Private_Use_Area_A`
`Sup_PUA_B`, `Supplementary_Private_Use_Area_B`
`Sup_Punctuation`, `Supplemental_Punctuation`
`Sup_Symbols_And_Pictographs`, `Supplemental_Symbols_And_Pictographs`
`Super_And_Sub`, `Superscripts_And_Subscripts`
`Sutton_SignWriting`
`Syloti_Nagri`
`Symbols_And_Pictographs_Ext_A`, `Symbols_And_Pictographs_Extended_A`
`Symbols_For_Legacy_Computing`
`Syriac`
`Syriac_Sup`, `Syriac_Supplement`
`Tagalog`
`Tagbanwa`
`Tags`
`Tai_Le`
`Tai_Tham`
`Tai_Viet`
`Tai_Xuan_Jing`, `Tai_Xuan_Jing_Symbols`
`Takri`
`Tamil`
`Tamil_Sup`, `Tamil_Supplement`
`Tangsa`
`Tangut`
`Tangut_Components`
`Tangut_Sup`, `Tangut_Supplement`
`Telugu`
`Thaana`
`Thai`
`Tibetan`
`Tifinagh`
`Tirhuta`
`Toto`
`Transport_And_Map`, `Transport_And_Map_Symbols`
`UCAS`, `Unified_Canadian_Aboriginal_Syllabics`, `Canadian_Syllabics`
`UCAS_Ext`, `Unified_Canadian_Aboriginal_Syllabics_Extended`
`UCAS_Ext_A`, `Unified_Canadian_Aboriginal_Syllabics_Extended_A`
`Ugaritic`
`Vai`
`Vedic_Ext`, `Vedic_Extensions`
`Vertical_Forms`
`Vithkuqi`
`VS`, `Variation_Selectors`
`VS_Sup`, `Variation_Selectors_Supplement`
`Wancho`
`Warang_Citi`
`Yezidi`
`Yi_Radicals`
`Yi_Syllables`
`Yijing`, `Yijing_Hexagram_Symbols`
`Zanabazar_Square`
`Znamenny_Music`, `Znamenny_Musical_Notation`

Support

PCRE	JS	Java	Ruby	Rust	.NET	Python	RE2
⛔	⛔	✅	✅	⛔	(✅)	⛔	⛔

Java doesn’t support the block No_Block.

Ruby doesn’t support the following blocks:

Arabic_Extended_C
CJK_Unified_Ideographs_Extension_H
Cyrillic_Extended_D
Devanagari_Extended_A
Kaktovik_Numerals

.NET only supports blocks in the Basic Multilingual Plane (BMP). And even in the BMP, not all blocks are supported:

Show 108 blocks supported by .NET

Alphabetic_Presentation_Forms
Arabic
Arabic_PresentationForms_A
Arabic_PresentationForms_B
Armenian
Arrows
Basic_Latin
Bengali
Block_Elements
Bopomofo
Bopomofo_Extended
Box_Drawing
Braille_Patterns
Buhid
CJK_Compatibility
CJK_Compatibility_Forms
CJK_Compatibility_Ideographs
CJK_Radicals_Supplement
CJK_Symbols_And_Punctuation
CJK_Unified_Ideographs
CJK_Unified_Ideographs_Extension_A
Cherokee
Combining_Diacritical_Marks
Combining_Diacritical_Marks_For_Symbols
Combining_Half_Marks
Combining_Marks_For_Symbols
Control_Pictures
Currency_Symbols
Cyrillic
Cyrillic_Supplement
Devanagari
Dingbats
Enclosed_Alphanumerics
Enclosed_CJK_Letters_And_Months
Ethiopic
General_Punctuation
Geometric_Shapes
Georgian
Greek
Greek_Extended
Greek_And_Coptic
Gujarati
Gurmukhi
Halfwidth_And_Fullwidth_Forms
Hangul_Compatibility_Jamo
Hangul_Jamo
Hangul_Syllables
Hanunoo
Hebrew
High_Private_Use_Surrogates
High_Surrogates
Hiragana
IPA_Extensions
Ideographic_Description_Characters
Kanbun
Kangxi_Radicals
Kannada
Katakana
Katakana_Phonetic_Extensions
Khmer
Khmer_Symbols
Lao
Latin_1_Supplement
Latin_Extended_A
Latin_Extended_B
Latin_Extended_Additional
Letterlike_Symbols
Limbu
Low_Surrogates
Malayalam
Mathematical_Operators
Miscellaneous_Mathematical_Symbols_A
Miscellaneous_Mathematical_Symbols_B
Miscellaneous_Symbols
Miscellaneous_Symbols_And_Arrows
Miscellaneous_Technical
Mongolian
Myanmar
Number_Forms
Ogham
Optical_Character_Recognition
Oriya
Phonetic_Extensions
Private_Use
Private_Use_Area
Runic
Sinhala
Small_Form_Variants
Spacing_Modifier_Letters
Specials
Superscripts_And_Subscripts
Supplemental_Arrows_A
Supplemental_Arrows_B
Supplemental_Mathematical_Operators
Syriac
Tagalog
Tagbanwa
TaiLe
Tamil
Telugu
Thaana
Thai
Tibetan
Unified_Canadian_Aboriginal_Syllabics
Variation_Selectors
Yi_Radicals
Yi_Syllables
Yijing_Hexagram_Symbols

Boolean properties

There are a number of boolean properties (meaning they are either Yes or No), which you can use in Pomsky by simply putting them in square brackets:

# match code points with Diacritic=Yes
[Diacritic]

Show all 53 boolean properties

Abbr	Long
`ASCII`	`ASCII`
`AHex`	`ASCII_Hex_Digit`
`Alpha`	`Alphabetic`
`Any`	`Any`
`Assigned`	`Assigned` ⚠️ not supported in PCRE
`Bidi_C`	`Bidi_Control`
`Bidi_M`	`Bidi_Mirrored` ⚠️ not supported in Ruby
`CI`	`Case_Ignorable`
`Cased`	`Cased`
`CWCF`	`Changes_When_Casefolded` ⚠️ not supported in PCRE, Ruby, and Rust
`CWCM`	`Changes_When_Casemapped`
`CWL`	`Changes_When_Lowercased`
`CWKCF`	`Changes_When_NFKC_Casefolded`
`CWT`	`Changes_When_Titlecased`
`CWU`	`Changes_When_Uppercased`
`Dash`	`Dash`
`DI`	`Default_Ignorable_Code_Point`
`Dep`	`Deprecated`
`Dia`	`Diacritic`
`Emoji`	`Emoji`
`EComp`	`Emoji_Component`
`EMod`	`Emoji_Modifier`
`EBase`	`Emoji_Modifier_Base`
`EPres`	`Emoji_Presentation`
`ExtPict`	`Extended_Pictographic`
`Ext`	`Extender`
`Gr_Base`	`Grapheme_Base`
`Gr_Ext`	`Grapheme_Extend`
`Hex`	`Hex_Digit`
`IDSB`	`IDS_Binary_Operator`
`IDST`	`IDS_Trinary_Operator`
`IDC`	`ID_Continue`
`IDS`	`ID_Start`
`Ideo`	`Ideographic`
`Join_C`	`Join_Control`
`LOE`	`Logical_Order_Exception`
`Lower`	`Lowercase`
`Math`	`Math`
`NChar`	`Noncharacter_Code_Point`
`Pat_Syn`	`Pattern_Syntax`
`Pat_WS`	`Pattern_White_Space`
`QMark`	`Quotation_Mark`
`Radical`	`Radical`
`RI`	`Regional_Indicator`
`STerm`	`Sentence_Terminal`
`SD`	`Soft_Dotted`
`Term`	`Terminal_Punctuation`
`UIdeo`	`Unified_Ideograph`
`Upper`	`Uppercase`
`VS`	`Variation_Selector`
`space`	`White_Space`
`XIDC`	`XID_Continue`
`XIDS`	`XID_Start`

Support

PCRE	JS	Java	Ruby	Rust	.NET	Python	RE2
✅	✅	(✅)	✅	✅	⛔	⛔	⛔

PCRE, Ruby, and Rust don’t support all properties – see the list.

Java only supports the following 20 boolean properties:

Alphabetic
Ideographic
Letter
Lowercase
Uppercase
Titlecase
Punctuation
Control
White_Space
Digit
Hex_Digit
Join_Control
Noncharacter_Code_Point
Assigned
Emoji
Emoji_Presentation
Emoji_Modifier
Emoji_Modifier_Base
Emoji_Component
Extended_Pictographic