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Regular Expression Unicode Syntax Reference

Unicode Characters
Character	Description	Example
\X	Matches a single Unicode grapheme, whether encoded as a single code point or multiple code points using combining marks. A grapheme most closely resembles the everyday concept of a "character".	\X matches à encoded as U+0061 U+0300, à encoded as U+00E0, ©, etc.
\uFFFF where FFFF are 4 hexadecimal digits	Matches a specific Unicode code point. Can be used inside character classes.	\u00E0 matches à encoded as U+00E0 only. \u00A9 matches ©
\x{FFFF} where FFFF are 1 to 4 hexadecimal digits	Perl syntax to match a specific Unicode code point. Can be used inside character classes.	\x{E0} matches à encoded as U+00E0 only. \x{A9} matches ©
Unicode Properties, Scripts and Blocks
Character	Description	Example
\p{L} or \p{Letter}	Matches a single Unicode code point that has the property "letter". See Unicode Character Properties in the tutorial for a complete list of properties. Each Unicode code point has exactly one property. Can be used inside character classes.	\p{L} matches à encoded as U+00E0; \p{S} matches ©
\p{Arabic}	Matches a single Unicode code point that is part of the Unicode script "Arabic". See Unicode Scripts in the tutorial for a complete list of scripts. Each Unicode code point is part of exactly one script. Can be used inside character classes.	\p{Thai} matches one of 83 code points in Thai script, from ก until ๙
\p{InBasicLatin}	Matches a single Unicode code point that is part of the Unicode block "BasicLatin". See Unicode Blocks in the tutorial for a complete list of blocks. Each Unicode code point is part of exactly one block. Blocks may contain unassigned code points. Can be used inside character classes.	\p{InLatinExtended-A} any of the code points in the block U+100 until U+17F (Ā until ſ)
\P{L} or \P{Letter}	Matches a single Unicode code point that does not have the property "letter". You can also use \P to match a code point that is not part of a particular Unicode block or script. Can be used inside character classes.	\P{L} matches ©

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