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Regular expression

A regular expression (shortened as regex or regexp), sometimes referred to as rational expression, is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for “find” or “find and replace” operations on strings, or for input validation.

Regular expression techniques are developed in theoretical computer science and formal language theory. They are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical analysis. Regular expressions are also supported in many programming languages.

Different syntaxes for writing regular expressions have existed since the 1980s, one being the POSIX standard and another, widely used, being the Perl syntax.

https://github.com/haath/commander.net

C# command-line argument parsing library, supporting deserialization, commands and help text generation.

argument-parsing cli nuget positional-parameters regular-expression serialization

Last synced: 10 Sep 2025

https://github.com/regexhq/es6-template-regex

Regular expression for matching es6 template delimiters in a string.

es2015 es6 match parse regex regular-expression syntax template

Last synced: 10 Jul 2025

https://github.com/mmirus/gravityforms-regex-validation

A WordPress plugin that adds regular expression validation options to Gravity Forms' single line text input.

gravity-forms gravityforms regex regular-expression validation wordpress-plugin

Last synced: 13 Oct 2025

https://github.com/jonschlinkert/line-number

Get the line number for each regex match found in a string.

index javascript jonschlinkert line match matches number regex regex-match regular-expression split string util

Last synced: 07 May 2025

https://github.com/doganulus/montre

The original timed regular expression matcher over temporal behaviors

pattern-matching regex-engine regular-expression timed

Last synced: 05 Apr 2025

https://github.com/ceedubs/irrec

composable regular expressions based on Kleene algebras and recursion schemes

kleene-algebras recursion-schemes regular-expression scalacheck

Last synced: 09 Apr 2025

https://github.com/EszopiCoder/excel-regexp-fx

Regular Expression Functions Excel Add-In

excel excel-vba regular-expression vba vba-excel

Last synced: 30 Jul 2025

https://github.com/cheatsnake/regex-by-example

🔍 Learn main features of regular expressions by examples (ENG/RUS)

cheatsheet example-code learn-by-examples regex regular-expression

Last synced: 21 Jan 2026

https://github.com/samuel-oldra/bionet

🎓 BioNet / TCC / Sistemas de Informação

genes genetic-diseases nusoap php protein regular-expression tcc

Last synced: 21 Mar 2025

https://github.com/jonschlinkert/author-regex

Regular expression for parsing an `author` string into an object following npm conventions.

contributor maintainer parsing person regex regular-expression somebody

Last synced: 06 May 2025

https://github.com/regexhq/gfm-code-block-regex

RegExp for gfm (GitHub Flavored Markdown) code blocks.

gfm github-flavored-markdown markdown regex regular-expression

Last synced: 11 Jan 2026

https://github.com/ogulcan/SwiftRegEx

A playground to learn regular expressions with Swift

regex regular-expression swift swift-3

Last synced: 13 May 2025

https://github.com/ogulcan/swiftregex

A playground to learn regular expressions with Swift

regex regular-expression swift swift-3

Last synced: 23 Jan 2026

https://github.com/hacdias/zipcodes-regex

A list of regular expressions for zipcodes

nodejs npm package regular-expression zipcode zipcodes-regex

Last synced: 09 Jul 2025

https://github.com/jangorman/jgoregexpbuilder

A delightful regular expressions DSL

dsl ios objective-c regex regular-expression

Last synced: 21 Apr 2025

https://github.com/j-ulrich/release-it-regex-bumper

Regular expression based version read/write plugin for release-it

bumper regular-expression release-it release-it-plugin

Last synced: 21 Jan 2026

https://github.com/bwrrp/xspattern.js

XML Schema pattern (regular expression) engine

regex regular-expression xml-schema xml-validation xsd-pattern

Last synced: 13 Apr 2025

https://github.com/jonschlinkert/requires-regex

Regular expressions for matching node.js require statements.

javascript nodejs regex regexp regular-expression require requires

Last synced: 07 May 2025

https://github.com/jaeyk/tidyethnicnews

R package for turning Ethnic NewsWatch search results into tidyverse-ready dataframes

html natural-language-processing parsing regular-expression tidy

Last synced: 07 May 2025

https://github.com/eneko/regex

Easy regular expression data extraction in Swift

capture-groups groups iterator regex regular-expression replacement swift

Last synced: 29 Sep 2025

https://github.com/wader/libfa

C automata library to build, determinize, minimize, translate regexp etc

automata c pcre regular-expression

Last synced: 11 Apr 2025

https://github.com/regexhq/copyright-regex

Regular expression for matching and parsing copyright statements.

copyright parsing regex regular-expression

Last synced: 10 Jul 2025

https://github.com/jribbens/verbose-regexp

Verbose Regular Expressions

javascript regex regexp regular-expression

Last synced: 17 Jul 2025

https://github.com/julianthome/autorex

A dk.brics FSM to regular-expression-string converter

automaton regular-expression state-elimination transformations translation

Last synced: 16 Jan 2026

https://github.com/regexhq/dotfile-regex

Regular expresson for matching dotfiles.

dotfile file filepath match path regex regular-expression test

Last synced: 02 Jul 2025

https://github.com/regexhq/punctuation-regex

Regular expression for matching punctuation characters.

punctuation punctuation-character regex regular-expression

Last synced: 10 Jul 2025

https://github.com/regexhq/whitespace-regex

Regular expression for matching the whitespace in a string.

regex regular-expression whitespace

Last synced: 10 Jul 2025

https://github.com/r3c/mure

MUlti-valued Regular Expressions

csharp regular-expression regular-expressions

Last synced: 28 Jan 2026

https://github.com/imelgrat/feed-finder

A PHP class for extracting the URLs of RSS (1.0 and 2.0) and ATOM feeds associated to a page, as well as OPML outline documents.

atom atom-feed composer-package html-parser html-scraper opml opml-outline php regex regular-expression rss rss-feed rss-feed-scraper

Last synced: 16 May 2025

https://github.com/tiaanduplessis/valid-south-african-id

🇿🇦 Perform regex and checksum match to check if given number string is a valid South African ID

checksum id regex regular-expression south-africa

Last synced: 08 Aug 2025

https://github.com/jship/s3k

Do more with stack by typing less!

alias build-tool haskell regex regular-expression stack

Last synced: 25 May 2026

https://github.com/ifr0z/searchplacebox

Search place with regular expression for matching coordinates

android kotlin matching-coordinates regular-expression searchplace

Last synced: 14 Aug 2025

https://github.com/meniny/colaexpression

💻A regular expression framework written in Swift.

regex regular-expression swift

Last synced: 09 Apr 2025

https://github.com/maswag/monaa

A Tool for Timed Patten Matching with Automata-Based Acceleration

automata data-streaming formal-specification monitoring monitoring-tool regular-expression runtime-verification

Last synced: 18 Jul 2025

https://github.com/es-shims/regexp.prototype.flags

ES6 spec-compliant RegExp.prototype.flags shim

ecmascript flags javascript polyfill regex regexp regular-expression

Last synced: 16 Apr 2025

https://github.com/luqmanoop/vue-regexr

A simple, beautiful tool for learning, testing and playing with regular expressions in real-time 🎉. Inspired by https://apptorium.com/expressions

javascript regex regular-expression vue

Last synced: 14 Apr 2025

https://github.com/wimpyprogrammer/strings-to-regex

Generate a concise Regular Expression to match a list of words

jest regular-expression trie typescript

Last synced: 11 Jul 2025

https://github.com/mobilusoss/react-anchorify-text

Create anchor tag with urls in text.

react regular-expression

Last synced: 12 Apr 2025

https://github.com/alvarofpp/mre

Maker Regular Expressions.

maker python-3 regex regular-expression

Last synced: 06 Mar 2026

https://github.com/ericcornelissen/js-regex-security-scanner

A static analyzer to scan JavaScript code for problematic regular expressions.

javascript redos regex regular-expression sast scanner security static-analysis

Last synced: 25 Feb 2026

https://github.com/burnett01/kotlin-expression-builder

A regular expression (REGEX) class and builder (DSL), written in Kotlin.

builder dsl expression expressions java jvm kotlin package regex regular-expression

Last synced: 14 Oct 2025

https://github.com/alenvelocity/regexus

Human-readable regular expressions for TS/JS

human-readable regex regexp regular-expression

Last synced: 06 Mar 2026

https://github.com/ocsoares/class-validator-cpf

Um decorator customizado para validar CPF usando como base o pacote class-validator

class-validator class-validator-cpf cpf iscpf nestjs nodejs regex regular-expression typescript validation validator

Last synced: 15 Sep 2025

https://github.com/rabestro/jetbrains-academy-readability-score

Everyone has their own personal reading history, and as we grow up, we are able to comprehend more and more complicated texts. But how do you estimate the level of difficulty of a given text, and how do you teach a computer to do that? In this project, you will find it out: write a program that determines how difficult the text is and for which age it is most suitable.

enum hyperskill interface jetbrains-academy lambda-expressions lambda-functions lazy-evaluation math readability regular-expression streams student-project text-analysis

Last synced: 17 Aug 2025

https://github.com/github30/cc-regex

'foo@example.com'.match(/\x{email}/)

charactors class email prefecture regex regexp regular-expression url

Last synced: 23 Aug 2025

https://github.com/howprogrammingworks/regexp

Regular Expression is a Syntax to Define String Pattern

regex regexp regular-expression

Last synced: 13 Jun 2025

https://github.com/grandmoff100/regexfactory

Dynamically construct regex patterns with native python representations

library python regex regex-generator regex-pattern regular-expression sphinx-documentation

Last synced: 22 Mar 2025

https://github.com/famished-tiger/srl-ruby

Simple Regex Language library and compiler in Ruby

regex-language regular-expression ruby srl

Last synced: 23 Apr 2025

https://github.com/dagronf/dsfregex

A Swift regex class abstracting away the complexities of NSRegularExpression and Swift Strings

foundation nsregularexpression regex regular-expression swift

Last synced: 27 Mar 2025

https://github.com/jack-q/reg2dfa

Regular expression to DFA, with DOT format output for visualization

dfa nfa regular-expression visualization

Last synced: 14 May 2025

https://github.com/regexhq/dotdir-regex

Regex for matching dot-directories, like ".git/" or ".github/"

directory dotfile dotfiles file filepath is match path regex regular-expression test

Last synced: 19 Feb 2026

https://github.com/aaronerhardt/regex-blocklist

A Firefox add-on for blocking urls based on Regular Expressions

blocklist case-insensitivity firefox-addon regex-blocklist regular-expression

Last synced: 11 Apr 2025

https://github.com/ikatyang-collab/unicode-regex

regular expression for matching unicode category

regular-expression unicode

Last synced: 05 May 2025

https://github.com/marihachi/carol-js

A powerful, small tool for building regular expressions.

builder esm regex regular-expression tools typescript utility

Last synced: 07 Mar 2026

https://github.com/perfectsiderepos/perfect-regex

A simple / light weight / independent regular expression extesion for Swift String. 轻量正则表达式

regular-expression string swift

Last synced: 21 Oct 2025

https://github.com/vaeth/replacer

Search and replace python regular expressions within many files interactively

regular-expression replace-in-files replace-text

Last synced: 14 Jul 2025

https://github.com/rockfordwei/perfect-pcre2

An express Swift class wrapper for PCRE2

pcre2 perfect regular-expression swift

Last synced: 20 Aug 2025

https://github.com/thomasleplus/dbgrep

Oracle PL/SQL stored procedure to search a regular expression across all text columns of a database.

database grep grepping oracle oracle-database oracle-db plsql regex regular-expression search

Last synced: 08 Jul 2025

https://github.com/octagon-simon/octavalidate-php

This PHP Library helps to validate your forms using regular expressions & validation rules.

form-validation regular-expression validation validation-library

Last synced: 20 Jun 2025

https://github.com/doganulus/reelay-codegen

A code generator from high-level formal specifications for monitoring and pattern matching sequential/temporal data.

code-generation data-stream formal-specification monitoring monitoring-tool regular-expression runtime-verification stream-processing temporal-data temporal-logic

Last synced: 05 Apr 2025

https://github.com/a7mdfre7at/masterly.fluentregex

A creative way to Create regular expression patterns using readable API.

fluent-api regex regular-expression string-manipulation string-matching

Last synced: 19 Apr 2025

https://github.com/alhadis/language-regexp

For those who're serious about writing regular expressions.

atom regex regexp regular-expression

Last synced: 25 Feb 2026

https://github.com/cloudtoid/url-pattern

Tired of regex matching for URL paths? This library can help by providing a simple URL pattern parser and matcher.

pattern-matching regex regular-expression routing text-processing url-parser url-parsing url-pattern

Last synced: 14 Jan 2026

https://github.com/mcustiel/php-simple-regex

This library allows developers to execute preg_* functions in PHP and use the results as objects, making the use of preg_* functions testeable. PhpSimpleRegex is integrated with PhpVerbalExpressions and Flux, to allow a full Object Oriented Regular Expressions use.

php preg regex regular-expression

Last synced: 11 Jan 2026

https://github.com/turbolent/javaregex

An implementation of Rob Pike's Virtual Machine-based regular expression engine

java regex regexp regular-expression regular-expression-engine regular-expressions virtual-machine vm

Last synced: 17 Feb 2026

https://github.com/alehed/rex

A DSL for deterministic finite state machines

dfa dsl racket regular-expression

Last synced: 17 Feb 2026

https://github.com/radeklat/words-to-regular-expression

A command line tool and Python library for converting lists of strings into matching regular expressions (finite automata).

command-line-tool matching-algorithm python python-library regular-expression

Last synced: 16 Mar 2026

https://github.com/keens/onigmo-rs

Rust binding and Rusty API of Onigmo, regexp engine

regex regexp regular-expression rust rust-bindings

Last synced: 23 Mar 2025

https://github.com/archo5/sgregex

Regular expression library

c c89 c99 lightweight limited regex regular-expression simple

Last synced: 16 May 2025

https://github.com/almondtools/regexparser

A Parser for regular expressions

java regular-expression

Last synced: 14 Jan 2026

https://github.com/bsaltz/greex

Java-based regex match generation for unit testing

java regex regular-expression regular-expressions

Last synced: 14 Jan 2026

https://github.com/eric11eca/automatonstudio

Toolbox for automaton theory, language theory, lambda calculus, propositional logic, and formal semantics. Including simulations, applications, parsers, and algorithm implementations.

automaton context-free-grammar finite-automaton-simulator finite-state-machine lambda-calculus propositional-logic regular-expression turing-machine-simulator

Last synced: 11 Mar 2026

https://github.com/huangjiahua/jregex

A C++ Regular Expression Library.

cxx library regular-expression

Last synced: 01 Mar 2025

https://github.com/aegoroff/grok

Regular expressions macro engine

c grok regular-expression

Last synced: 24 Jan 2026

https://github.com/piotrjustyna/fontbot

Choose word, choose font, tweet. Twitter bot written in Haskell.

font haskell regular-expression timeline tweets twitter

Last synced: 19 May 2026

https://github.com/elrizwiraswara/regexed_text

This package extends the Text widget to provide additional functionality for highlighting text that matches a given list of RegExp patterns.

highlight link regular-expression text text-style

Last synced: 15 Jun 2025

https://github.com/tiaanduplessis/colors-regex

Regular expressions for rgb, rgba, hex, hexa, hsl & hsla colors

colors-regex hexa hsl hsla-colors regular-expression rgba

Last synced: 08 Aug 2025