String property Age. Corresponds to UCharacter.getAge(int).

ICU Status

Stable since ICU 2.4.

Binary property Alphabetic.

Property for UCharacter.isUAlphabetic(), different from the property in UCharacter.isalpha().

Lu + Ll + Lt + Lm + Lo + Nl + Other_Alphabetic.

ICU Status

Stable since ICU 2.6.

Binary property ASCII_Hex_Digit (0-9 A-F a-f).

ICU Status

Stable since ICU 2.6.

Binary property of strings Basic_Emoji. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Enumerated property Bidi_Class. Same as UCharacter.getDirection(int), returns UCharacterDirection values.

ICU Status

Stable since ICU 2.4.

Binary property Bidi_Control.

Format controls which have specific functions in the Bidi Algorithm.

ICU Status

Stable since ICU 2.6.

Binary property Bidi_Mirrored.

Characters that may change display in RTL text.

Property for UCharacter.isMirrored().

See Bidi Algorithm; UTR 9.

ICU Status

Stable since ICU 2.6.

String property Bidi_Mirroring_Glyph. Corresponds to UCharacter.getMirror(int).

ICU Status

Stable since ICU 2.4.

String property Bidi_Paired_Bracket (new in Unicode 6.3). Corresponds to UCharacter.getBidiPairedBracket.

ICU Status

Stable since ICU 52.

Enumerated property Bidi_Paired_Bracket_Type (new in Unicode 6.3). Used in UAX #9: Unicode Bidirectional Algorithm (http://www.unicode.org/reports/tr9/) Returns UCharacter.BidiPairedBracketType values.

ICU Status

Stable since ICU 52.

One more than the last constant for binary Unicode properties.

First constant for binary Unicode properties.

ICU Status

Stable since ICU 2.6.

Enumerated property Block. Same as UCharacter.UnicodeBlock.of(int), returns UCharacter.UnicodeBlock values.

ICU Status

Stable since ICU 2.4.

Enumerated property Canonical_Combining_Class. Same as UCharacter.getCombiningClass(int), returns 8-bit numeric values.

ICU Status

Stable since ICU 2.4.

String property Case_Folding. Corresponds to UCharacter.foldCase(String, boolean).

ICU Status

Stable since ICU 2.4.

Binary property Case_Ignorable. Used in context-sensitive case mappings.

ICU Status

Stable since ICU 4.4.

Binary property Case_Sensitive.

Either the source of a case mapping or in the target of a case mapping. Not the same as the general category Cased_Letter.

ICU Status

Stable since ICU 2.6.

Binary property Cased. For Lowercase, Uppercase and Titlecase characters.

ICU Status

Stable since ICU 4.4.

Binary property Changes_When_Casefolded.

ICU Status

Stable since ICU 4.4.

Binary property Changes_When_Casemapped.

ICU Status

Stable since ICU 4.4.

Binary property Changes_When_Lowercased.

ICU Status

Stable since ICU 4.4.

Binary property Changes_When_NFKC_Casefolded.

ICU Status

Stable since ICU 4.4.

Binary property Changes_When_Titlecased.

ICU Status

Stable since ICU 4.4.

Binary property Changes_When_Uppercased.

ICU Status

Stable since ICU 4.4.

Binary property Dash.

Variations of dashes.

ICU Status

Stable since ICU 2.6.

Enumerated property Decomposition_Type. Returns UCharacter.DecompositionType values.

ICU Status

Stable since ICU 2.4.

Binary property Default_Ignorable_Code_Point (new).

Property that indicates codepoint is ignorable in most processing.

Codepoints (2060..206F, FFF0..FFFB, E0000..E0FFF) + Other_Default_Ignorable_Code_Point + (Cf + Cc + Cs - White_Space)

ICU Status

Stable since ICU 2.6.

Binary property Deprecated (new).

The usage of deprecated characters is strongly discouraged.

ICU Status

Stable since ICU 2.6.

Binary property Diacritic.

Characters that linguistically modify the meaning of another character to which they apply.

ICU Status

Stable since ICU 2.6.

One more than the last constant for double Unicode properties.

First constant for double Unicode properties.

ICU Status

Stable since ICU 2.4.

Enumerated property East_Asian_Width. See http://www.unicode.org/reports/tr11/ Returns UCharacter.EastAsianWidth values.

ICU Status

Stable since ICU 2.4.

Binary property Emoji. See http://www.unicode.org/reports/tr51/#Emoji_Properties

ICU Status

Stable since ICU 57.

Binary property Emoji_Component. See http://www.unicode.org/reports/tr51/#Emoji_Properties

ICU Status

Stable since ICU 60.

Binary property of strings Emoji_Keycap_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Binary property Emoji_Modifier. See http://www.unicode.org/reports/tr51/#Emoji_Properties

ICU Status

Stable since ICU 57.

Binary property Emoji_Modifier_Base. See http://www.unicode.org/reports/tr51/#Emoji_Properties

ICU Status

Stable since ICU 57.

Binary property Emoji_Presentation. See http://www.unicode.org/reports/tr51/#Emoji_Properties

ICU Status

Stable since ICU 57.

Binary property Extended_Pictographic. See http://www.unicode.org/reports/tr51/#Emoji_Properties

ICU Status

Stable since ICU 62.

Binary property Extender.

Extend the value or shape of a preceding alphabetic character, e.g. length and iteration marks.

ICU Status

Stable since ICU 2.6.

Binary property Full_Composition_Exclusion.

CompositionExclusions.txt + Singleton Decompositions + Non-Starter Decompositions.

ICU Status

Stable since ICU 2.6.

Enumerated property General_Category. Same as UCharacter.getType(int), returns UCharacterCategory values.

ICU Status

Stable since ICU 2.4.

Bitmask property General_Category_Mask. This is the General_Category property returned as a bit mask. When used in UCharacter.getIntPropertyValue(c), returns bit masks for UCharacterCategory values where exactly one bit is set. When used with UCharacter.getPropertyValueName() and UCharacter.getPropertyValueEnum(), a multi-bit mask is used for sets of categories like "Letters".

ICU Status

Stable since ICU 2.4.

Binary property Grapheme_Base (new).

For programmatic determination of grapheme cluster boundaries. [0..10FFFF]-Cc-Cf-Cs-Co-Cn-Zl-Zp-Grapheme_Link-Grapheme_Extend-CGJ

ICU Status

Stable since ICU 2.6.

Enumerated property Grapheme_Cluster_Break (new in Unicode 4.1). Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Returns UCharacter.GraphemeClusterBreak values.

ICU Status

Stable since ICU 3.4.

Binary property Grapheme_Extend (new).

For programmatic determination of grapheme cluster boundaries.

Me+Mn+Mc+Other_Grapheme_Extend-Grapheme_Link-CGJ

ICU Status

Stable since ICU 2.6.

Binary property Grapheme_Link (new).

For programmatic determination of grapheme cluster boundaries.

ICU Status

Stable since ICU 2.6.

Enumerated property Hangul_Syllable_Type, new in Unicode 4. Returns UCharacter.HangulSyllableType values.

ICU Status

Stable since ICU 2.6.

Binary property Hex_Digit.

Characters commonly used for hexadecimal numbers.

ICU Status

Stable since ICU 2.6.

Binary property Hyphen.

Dashes used to mark connections between pieces of words, plus the Katakana middle dot.

ICU Status

Stable since ICU 2.6.

Binary property ID_Compat_Math_Continue.

Used in mathematical identifier profile in UAX #31.

ICU Status

Draft since ICU 74.

Binary property ID_Compat_Math_Start.

Used in mathematical identifier profile in UAX #31.

ICU Status

Draft since ICU 74.

Binary property ID_Continue.

Characters that can continue an identifier.

ID_Start+Mn+Mc+Nd+Pc

ICU Status

Stable since ICU 2.6.

Binary property ID_Start.

Characters that can start an identifier.

Lu+Ll+Lt+Lm+Lo+Nl

ICU Status

Stable since ICU 2.6.

Binary property Ideographic.

CJKV ideographs.

ICU Status

Stable since ICU 2.6.

Binary property IDS_Binary_Operator (new).

For programmatic determination of Ideographic Description Sequences.

ICU Status

Stable since ICU 2.6.

Binary property IDS_Trinary_Operator (new).

For programmatic determination of Ideographic Description Sequences.

ICU Status

Stable since ICU 2.6.

Binary property IDS_Unary_Operator. For programmatic determination of Ideographic Description Sequences.

ICU Status

Draft since ICU 74.

Enumerated property Indic_Positional_Category. New in Unicode 6.0 as provisional property Indic_Matra_Category; renamed and changed to informative in Unicode 8.0. See http://www.unicode.org/reports/tr44/#IndicPositionalCategory.txt

ICU Status

Stable since ICU 63.

Enumerated property Indic_Syllabic_Category. New in Unicode 6.0 as provisional; informative since Unicode 8.0. See http://www.unicode.org/reports/tr44/#IndicSyllabicCategory.txt

ICU Status

Stable since ICU 63.

One more than the last constant for enumerated/integer Unicode properties.

First constant for enumerated/integer Unicode properties.

ICU Status

Stable since ICU 2.4.

Deprecated string property ISO_Comment. Corresponds to UCharacter.getISOComment(int).

Binary property Join_Control.

Format controls for cursive joining and ligation.

ICU Status

Stable since ICU 2.6.

Enumerated property Joining_Group. Returns UCharacter.JoiningGroup values.

ICU Status

Stable since ICU 2.4.

Enumerated property Joining_Type. Returns UCharacter.JoiningType values.

ICU Status

Stable since ICU 2.4.

Enumerated property Lead_Canonical_Combining_Class. ICU-specific property for the ccc of the first code point of the decomposition, or lccc(c)=ccc(NFD(c)[0]). Useful for checking for canonically ordered text; see Normalizer.FCD and http://www.unicode.org/notes/tn5/#FCD . Returns 8-bit numeric values like CANONICAL_COMBINING_CLASS.

ICU Status

Stable since ICU 3.0.

Enumerated property Line_Break. Returns UCharacter.LineBreak values.

ICU Status

Stable since ICU 2.4.

Binary property Logical_Order_Exception (new).

Characters that do not use logical order and require special handling in most processing.

ICU Status

Stable since ICU 2.6.

Binary property Lowercase.

Same as UCharacter.isULowercase(), different from UCharacter.islower().

Ll+Other_Lowercase

ICU Status

Stable since ICU 2.6.

String property Lowercase_Mapping. Corresponds to UCharacter.toLowerCase(String).

ICU Status

Stable since ICU 2.4.

One more than the last constant for bit-mask Unicode properties.

First constant for bit-mask Unicode properties.

ICU Status

Stable since ICU 2.4.

Binary property Math.

Sm+Other_Math

ICU Status

Stable since ICU 2.6.

String property Name. Corresponds to UCharacter.getName(int).

ICU Status

Stable since ICU 2.4.

Binary property NFC_Inert. ICU-specific property for characters that are inert under NFC, i.e., they do not interact with adjacent characters. Used for example in normalizing transforms in incremental mode to find the boundary of safely normalizable text despite possible text additions.

ICU Status

Stable since ICU 3.0.

See Also

NFD_INERT

Enumerated property NFC_Quick_Check. Returns numeric values compatible with Normalizer.QuickCheckResult.

ICU Status

Stable since ICU 3.0.

Binary property NFD_Inert. ICU-specific property for characters that are inert under NFD, i.e., they do not interact with adjacent characters. Used for example in normalizing transforms in incremental mode to find the boundary of safely normalizable text despite possible text additions. There is one such property per normalization form. These properties are computed as follows - an inert character is: a) unassigned, or ALL of the following: b) of combining class 0. c) not decomposed by this normalization form. AND if NFC or NFKC, d) can never compose with a previous character. e) can never compose with a following character. f) can never change if another character is added. Example: a-breve might satisfy all but f, but if you add an ogonek it changes to a-ogonek + breve See also com.ibm.text.UCD.NFSkippable in the ICU4J repository, and icu/source/common/unormimp.h .

ICU Status

Stable since ICU 3.0.

Enumerated property NFD_Quick_Check. Returns numeric values compatible with Normalizer.QuickCheckResult.

ICU Status

Stable since ICU 3.0.

Binary property NFKC_Inert. ICU-specific property for characters that are inert under NFKC, i.e., they do not interact with adjacent characters. Used for example in normalizing transforms in incremental mode to find the boundary of safely normalizable text despite possible text additions.

ICU Status

Stable since ICU 3.0.

See Also

NFD_INERT

Enumerated property NFKC_Quick_Check. Returns numeric values compatible with Normalizer.QuickCheckResult.

ICU Status

Stable since ICU 3.0.

Binary property NFKD_Inert. ICU-specific property for characters that are inert under NFKD, i.e., they do not interact with adjacent characters. Used for example in normalizing transforms in incremental mode to find the boundary of safely normalizable text despite possible text additions.

ICU Status

Stable since ICU 3.0.

See Also

NFD_INERT

Enumerated property NFKD_Quick_Check. Returns numeric values compatible with Normalizer.QuickCheckResult.

ICU Status

Stable since ICU 3.0.

Binary property Noncharacter_Code_Point.

Code points that are explicitly defined as illegal for the encoding of characters.

ICU Status

Stable since ICU 2.6.

Enumerated property Numeric_Type. Returns UCharacter.NumericType values.

ICU Status

Stable since ICU 2.4.

Double property Numeric_Value. Corresponds to UCharacter.getUnicodeNumericValue(int).

ICU Status

Stable since ICU 2.4.

One more than the last constant for Unicode properties with unusual value types.

First constant for Unicode properties with unusual value types.

ICU Status

Stable since ICU 4.6.

Binary property Pattern_Syntax (new in Unicode 4.1). See UAX #31 Identifier and Pattern Syntax (http://www.unicode.org/reports/tr31/)

ICU Status

Stable since ICU 3.4.

Binary property Pattern_White_Space (new in Unicode 4.1). See UAX #31 Identifier and Pattern Syntax (http://www.unicode.org/reports/tr31/)

ICU Status

Stable since ICU 3.4.

Binary property alnum (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the UCharacter class documentation.

ICU Status

Stable since ICU 3.4.

Binary property blank (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the UCharacter class documentation.

ICU Status

Stable since ICU 3.4.

Binary property graph (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the UCharacter class documentation.

ICU Status

Stable since ICU 3.4.

Binary property print (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the UCharacter class documentation.

ICU Status

Stable since ICU 3.4.

Binary property xdigit (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the UCharacter class documentation.

ICU Status

Stable since ICU 3.4.

Binary property Prepended_Concatenation_Mark.

ICU Status

Stable since ICU 60.

Binary property Quotation_Mark.

ICU Status

Stable since ICU 2.6.

Binary property Radical (new).

For programmatic determination of Ideographic Description Sequences.

ICU Status

Stable since ICU 2.6.

Binary property Regional_Indicator.

ICU Status

Stable since ICU 60.

Binary property of strings RGI_Emoji. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Binary property of strings RGI_Emoji_Flag_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Binary property of strings RGI_Emoji_Modifier_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Binary property of strings RGI_Emoji_Tag_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Binary property of strings RGI_Emoji_ZWJ_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets

ICU Status

Stable since ICU 70.

Binary property STerm (new in Unicode 4.0.1). Sentence Terminal. Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/)

ICU Status

Stable since ICU 3.0.

Enumerated property Script. Same as UScript.getScript(int), returns UScript values.

ICU Status

Stable since ICU 2.4.

Miscellaneous property Script_Extensions (new in Unicode 6.0). Some characters are commonly used in multiple scripts. For more information, see UAX #24: http://www.unicode.org/reports/tr24/. Corresponds to UScript.hasScript and UScript.getScriptExtensions.

ICU Status

Stable since ICU 4.6.

Binary Property Segment_Starter. ICU-specific property for characters that are starters in terms of Unicode normalization and combining character sequences. They have ccc=0 and do not occur in non-initial position of the canonical decomposition of any character (like " in NFD(a-umlaut) and a Jamo T in an NFD(Hangul LVT)). ICU uses this property for segmenting a string for generating a set of canonically equivalent strings, e.g. for canonical closure while processing collation tailoring rules.

ICU Status

Stable since ICU 3.0.

Enumerated property Sentence_Break (new in Unicode 4.1). Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Returns UCharacter.SentenceBreak values.

ICU Status

Stable since ICU 3.4.

String property Simple_Case_Folding. Corresponds to UCharacter.foldCase(int, boolean).

ICU Status

Stable since ICU 2.4.

String property Simple_Lowercase_Mapping. Corresponds to UCharacter.toLowerCase(int).

ICU Status

Stable since ICU 2.4.

String property Simple_Titlecase_Mapping. Corresponds to UCharacter.toTitleCase(int).

ICU Status

Stable since ICU 2.4.

String property Simple_Uppercase_Mapping. Corresponds to UCharacter.toUpperCase(int).

ICU Status

Stable since ICU 2.4.

Binary property Soft_Dotted (new).

Characters with a "soft dot", like i or j.

An accent placed on these characters causes the dot to disappear.

ICU Status

Stable since ICU 2.6.

One more than the last constant for string Unicode properties.

First constant for string Unicode properties.

ICU Status

Stable since ICU 2.4.

Binary property Terminal_Punctuation.

Punctuation characters that generally mark the end of textual units.

ICU Status

Stable since ICU 2.6.

String property Titlecase_Mapping. Corresponds to UCharacter.toTitleCase(String).

ICU Status

Stable since ICU 2.4.

Enumerated property Trail_Canonical_Combining_Class. ICU-specific property for the ccc of the last code point of the decomposition, or lccc(c)=ccc(NFD(c)[last]). Useful for checking for canonically ordered text; see Normalizer.FCD and http://www.unicode.org/notes/tn5/#FCD . Returns 8-bit numeric values like CANONICAL_COMBINING_CLASS.

ICU Status

Stable since ICU 3.0.

Special value indicating undefined property.

String property Unicode_1_Name. This property is of little practical value. Beginning with ICU 49, ICU APIs return null or an empty string for this property. Corresponds to UCharacter.getName1_0(int).

Binary property Unified_Ideograph (new).

For programmatic determination of Ideographic Description Sequences.

ICU Status

Stable since ICU 2.6.

Binary property Uppercase.

Same as UCharacter.isUUppercase(), different from UCharacter.isUpperCase().

Lu+Other_Uppercase

ICU Status

Stable since ICU 2.6.

String property Uppercase_Mapping. Corresponds to UCharacter.toUpperCase(String).

ICU Status

Stable since ICU 2.4.

Binary property Variation_Selector (new in Unicode 4.0.1). Indicates all those characters that qualify as Variation Selectors. For details on the behavior of these characters, see StandardizedVariants.html and 15.6 Variation Selectors.

ICU Status

Stable since ICU 3.0.

Enumerated property Vertical_Orientation. Used for UAX #50 Unicode Vertical Text Layout (https://www.unicode.org/reports/tr50/). New as a UCD property in Unicode 10.0.

ICU Status

Stable since ICU 63.

Binary property White_Space.

Same as UCharacter.isUWhiteSpace(), different from UCharacter.isSpace() and UCharacter.isWhitespace(). Space characters+TAB+CR+LF-ZWSP-ZWNBSP

ICU Status

Stable since ICU 2.6.

Enumerated property Word_Break (new in Unicode 4.1). Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Returns UCharacter.WordBreak values.

ICU Status

Stable since ICU 3.4.

Binary property XID_Continue.

ID_Continue modified to allow closure under normalization forms NFKC and NFKD.

ICU Status

Stable since ICU 2.6.

Binary property XID_Start.

ID_Start modified to allow closure under normalization forms NFKC and NFKD.

ICU Status

Stable since ICU 2.6.