Regular Expression Unicode Property Set Reference

Property sets are a kind of Unicode property that flavors may support. A property set can have multiple values. Every Unicode code point is assigned exactly one value of each set. In a regular expression you specify both a set and one of its values as the Property in \p{Property}. If the main Unicode reference page indicates that your flavor supports negated property syntax then all properties listed below as being supported can also be used with the negated syntax. The negated property then matches any code point that has any value of the specified set other than the specified value.

Many flavors only support a limited number of property sets. The fact that a flavor is built on a certain version of Unicode does not mean it supports all the property sets that exist in that version of Unicode. The table below indicates which flavors support which properties sets. If a flavor supports a property set then it does support all property values that are part of that set. Those values are listed in the description. The exact code points matched by each property do depend on the Unicode version the flavor was built with.

Strictly speaking, General_Category, Script, and Block are also property sets. But we handle those separately in this reference because they have alternative syntax specific to them. The lists of scripts and blocks also keep growing with new Unicode versions.

JGsoft Python JavaScript VBScript XRegExp .NET Java ICU RE2 Perl PCRE PCRE2 PHP Delphi R Ruby std::regex Boost Tcl POSIX GNU Oracle XML XPath JGsoft Python JavaScript VBScript XRegExp .NET Java ICU RE2 Perl PCRE PCRE2 PHP Delphi R Ruby std::regex Boost Tcl POSIX GNU Oracle XML XPath