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Categories

The Unicode Character Database specifies a number of possible values for the General Category property and provides mappings from code points to specific character properties. The tables below specify the recognized values of the General Category property.

IsCategory

Syntax

IsCategory ::= Letters | Marks | Numbers | Punctuation | Separators | Symbols | Others

Letters

Syntax

Letters ::= 'L' [ultmo]?

The following table shows the properties for letters.

Property Description

L

All letters

Lu

Uppercase

Ll

Lowercase

Lt

Titlecase

Lm

Modifier

Lo

Other

Marks

Syntax

Marks ::= 'M' [nce]?

The following table shows the properties for marks.

Property Description

M

All marks

Mn

Nonspacing

Mc

Space combining

Me

Enclosing

Numbers

Syntax

Numbers ::= 'N' [dlo]?

The following table shows the properties for numbers.

Property Description

N

All numbers

Nd

Decimal digit

Nl

Letter

No

Other

Punctuation

Syntax

Punctuation ::= 'P' [cdseifo]?

The following table shows the properties for punctuation.

Property Description

P

All punctuation

Pc

Connector

Pd

Dash

Ps

Open

Pe

Close

Pi

Initial quote (may behave like Ps or Pe depending on usage)

Pf

Final quote (may behave like Ps or Pe depending on usage)

Po

Other

Separators

Syntax

Separators ::= 'Z' [slp]?

The following table shows the properties for separators.

Property Description

Z

All separators

Zs

Space

Zl

Line

Zp

Paragraph

Symbols

Syntax

Symbols ::= 'S' [mcko]?

The following table shows the properties for symbols.

Property Description

S

All symbols

Sm

Math

Sc

Currency

Sk

Modifier

So

Other

Others

Syntax

Others ::= 'O' [cfon]?

The following table shows the properties for others.

Property Description

O

All others

Cc

Control

Cf

Format

Co

Private use

Cn

Not assigned

Note

The Cs property is not included here. The Cs property identifies surrogate characters that do not occur at the level of character abstraction that XML instance documents use.

See Also

Reference

XML Schema Regular Expressions
XML Schema Regular Expressions Reference Chart

Concepts

Data Type Facets