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Title	Test Details Roman numerials
Expression	^(?i:(?=[MDCLXVI])((M{0,3})((C[DM])|(D?C{0,3}))?((X[LC])|(L?XX{0,2})|L)?((I[VX])|(V?(II{0,2}))|V)?))$
Description	This RE validates alpha characters that evaluate to Roman numerials, ranging from 1(I) - 3999(MMMCMXCIX). Not case sensitive.
Matches	III | xiv | MCMXCIX
Non-Matches	iiV | MCCM | XXXX
Author	Rating: Michael Ash

Title	Test Details Pattern Title
Expression	^([1-9]{2}|[0-9][1-9]|[1-9][0-9])[0-9]{3}$
Description	Postcode check for Spain
Matches	12345 | 10234 | 01234
Non-Matches	00123
Author	Rating: Henk de Vries -op regexlib.com-

Title	Test Details Pattern Title
Expression	^[a-zA-Z_][a-zA-Z0-9_]*$
Description	Matches variable names/identifier from C# (and most other languages)
Matches	VariableName | i | Some_Value_3
Non-Matches	3ID | Hello World
Author	Rating: Andrew Deren

Title	Test Details Pattern Title
Expression	\u00AE
Description	Matches the registered trademark (®). Pretty simple, yet I dont think existed on RegExLib before.
Matches	®
Non-Matches	anything else
Author	Rating: Roman Lukyanenko

Title	Test Details Pattern Title
Expression	^(V-|I-)?[0-9]{4}$
Description	Postcode check for Italy (including possible Vatican/Italy indications)
Matches	1234 | V-1234
Non-Matches	12345
Author	Rating: Henk de Vries -op regexlib.com-

Title	Test Details Pattern Title
Expression	^[1-9]{1}[0-9]{3} ?[A-Z]{2}$
Description	Postcode check for Netherlands
Matches	1234 AB | 1234AB
Non-Matches	123AB | 1234AAA
Author	Rating: Henk de Vries -op regexlib.com-

Title	Test Details Pattern Title
Expression	^(s-|S-){0,1}[0-9]{3}\s?[0-9]{2}$
Description	Validates swedish zipcodes (postnr) with or without space between groups. With leading s- or not. Can be disconnected by removing ''(s-|S-){0,1}''.
Matches	12345 | 932 68 | S-621 46
Non-Matches	5367 | 425611 | 31 545
Author	Rating: Tommy Ullberg

Title	Test Details Pattern Title
Expression	^\(?082|083|084|072\)?[\s-]?[\d]{3}[\s-]?[\d]{4}$
Description	I modified the existing phone number regex for another user looking to only allow 082, 083, 084, or 072 exchanges. Written by Jason Gaylord
Matches	082-131-5555 | 083-145-654 | 072 555 1212
Non-Matches	131-253-4564 | 5551212 | 800 555 1212
Author	Rating: Jason N. Gaylord

Title	Test Details Pattern Title
Expression	(\d*)'*-*(\d*)/*(\d*)"
Description	This regular expression is for parsing feet and inches measurements.
Matches	5'-3/16" | 1'-2" | 5/16"
Non-Matches	1 3/16
Author	Rating: Felix Osegueda

Title	Test Details Pattern Title
Expression	^[0-9]{2}[-][0-9]{2}[-][0-9]{2}$
Description	Validates a UK Bank Sort code
Matches	09-01-29 | 05-06-25
Non-Matches	090125
Author	Rating: Richard Slade

Title	Test Details Pattern Title
Expression	\d{2}.?\d{3}.?\d{3}/?\d{4}-?\d{2}
Description	This regular expressions matches CNPJ number. CNPJ is a Registration Number of Brazilian Companies.
Matches	00.000.000/0000-00 | 00000000000000
Non-Matches	00-000-000-000-00 | AA.AAA.AAA/AAAA-AA
Author	Rating: Gabriel Fróes

Title	Test Details Pattern Title
Expression	\p{IsBasicLatin}
Description	Matches any character is the Basic Latin Unicode Range \U0000-U007F (Ascii 0-127) I've blogged about this and other expressions here http://blogs.regexadvice.com/mash/archive/2004/04/17/988.aspx
Matches	ABCxyz | 123 | +-=
Non-Matches	? | ? | ?
Author	Rating: Michael Ash

Title	Test Details Pattern Title
Expression	<[^>\s]*\bauthor\b[^>]*>
Description	This expression will match the corresponding XML/HTML elements opening and closing tags. Useful to handle documents fragments, without loading an XML DOM.
Matches	<author name="Daniel"> | </sch:author> | <pp:author name="Daniel"
Non-Matches	<other> | </authors> | <work>author</work>
Author	Rating: Daniel Cazzulino

Title	Test Details Pattern Title
Expression	(NOT)?(\s*\(*)\s*(\w+)\s*(=|<>|<|>|LIKE|IN)\s*(\(([^\)]*)\)|'([^']*)'|(-?\d*\.?\d+))(\s*\)*\s*)(AND|OR)?
Description	Heres my sql clause parser regexp for recordset filtering. Does recursive query parsing all by its self. Only problem I cant figure is how to match comma separated lists of quoted strings. Tell me if you figure out how! The unicodes in the re was put in by the entry form please replace them with their ascii equivalents to use it.
Matches	Aeroplane LIKE 767 | Movie LIKE 'Star' AND NOT Movie LIKE 'Trek' | Number IN (1,2,3,4,5)
Non-Matches	Hello there | A=EXCELLENT OR | B!=POOR
Author	Rating: Joseph Warwick

Title	Test Details Pattern Title
Expression	(^\d{5}-\d{3}|^\d{2}.\d{3}-\d{3}|\d{8})
Description	Validar o do CEP Brasileiro com 8 posicoes podendo usar mascara . e - ou somente numeros
Matches	12.345-678 | 12345-678 | 12345678
Non-Matches	12.345678 | 12345-1 | 123
Author	Rating: Fernando Cerqueira

Title	Test Details Pattern Title
Expression	^(.|\n){0,16}$
Description	Limit Length - limit the length of a text box or other area to contain any character plus new line
Matches	shorter than max
Non-Matches	string longer than max
Author	Rating: David Yack

Title	Test Details Pattern Title
Expression	(?s)(?:\e\[(?:(\d+);?)*([A-Za-z])(.*?))(?=\e\[|\z)
Description	This expression will match all of the commands(escape codes) used in ANSI files. These are what were used to create the colors/blocks on BBS's for those of us that once dialed into them. http://www.wikipedia.org/wiki/ANSI_escape_code has a reference for ANSI escape codes. http://idledreams.net/lordscarlet/posts/153.aspx shows an example of the engine I have created surrounding the expression
Matches	Hello | Test | 
Non-Matches	abc
Author	Rating: Doug Moore

Title	Test Details Pattern Title
Expression	^[^']*$
Description	This one matches all strings that do not contain the single quotation mark (').
Matches	asljas | %/&89uhuhadjkh | "hi there!"
Non-Matches	'hi there!' | It's 9 o'clock | '''''
Author	Rating: Peter Friese

Title	Test Details Pattern Title
Expression	^[A-Za-z]{6}[0-9LMNPQRSTUV]{2}[A-Za-z]{1}[0-9LMNPQRSTUV]{2}[A-Za-z]{1}[0-9LMNPQRSTUV]{3}[A -Za-z]{1}$
Description	Check italian fiscal code (codice fiscale) with "OMOCODIA" control
Matches	BTTNDR78R06A79QU
Non-Matches	BTTNDR78R06A79AU
Author	Rating: andrea mele

Title	Test Details Pattern Title
Expression	^[{|\(]?[0-9a-fA-F]{8}[-]?([0-9a-fA-F]{4}[-]?){3}[0-9a-fA-F]{12}[\)|}]?$
Description	Specifier Format of Guid Values that this RegEx supports: 32 digits: [xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx] 32 digits separated by hyphens: [xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx] 32 digits separated by hyphens, enclosed in brackets: [{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}] 32 digits separated by hyphens, enclosed in parentheses: [(xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)]
Matches	914D226A-2F5B-4944-934D-96BBE6571977 | {914D226A-2F5B-4944-934D-96BBE6571977}
Non-Matches	914D226A-2F5B-4944-XXXX-96BBE6571977 | {914D226A-2F5B-4944-XXXX-96BBE6571977}
Author	Rating: Nicholas Berardi