Regular Expressions 101

JS/TS regex for token validation.

convert 16 chars into four hyphen separated groups

English address that can start with numbers, # sign or words (\w) followed with any combination of previously mentioned. Multi-line, global and case insensitive supported. Address CANNOT START WITH \w character _ or 0 or any other symbols

Example: Received: from VI1PR0102CA0029.eurprd01.prod.exchangelabs.com (2603:10a6:802::42) by VE1PR01MB5599.eurprd01.prod.exchangelabs.com (2603:10a6:803:11f::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2602.12; Thu, 9 Jan ...

Lrc file

Match each tag in a lrc file

Group tags and lyrics in one lrc file, multiple lines

indonesian telephone number

Beginnings of defining a log format for Salt to use within LNAV. https://docs.lnav.org/en/latest/formats.html

Validate and split street address (street and house number) with leading house number

Validate and split street address (street and house number) with trailing house number

Validate unicode email addresses

[ [ { "content": "_}24I:9t58Tu?m@e", "isParticipating": true, "groupNum": 0,...

This allows multiple continuous strings of only alpha numeric characters & limiting punctuation to: ?().,'+ /:@-

RegExp matches each (combined) Unicode symbol, character, or emoji consecutively. Note: there are some edge cases where it does not combine some symbols that should be seen as one symbol (after Default Grapheme Cluster Boundary of UAX #29). For Unicode code point info see codepoints.net Also, see ...

Get the python substitution strings from inside of print statements. Replace the whole substitution string with {{ ArgumentName }} for use in a Jinja2 rendering. Supports fstrings...

Extract substitution parameters from python print strings works with fstrings old style format strings old style %(variable) strings

Regex URL validation pattern

Regex to find URLs in text

Simple pattern for validating Cron Job descriptors in your JavaScript / TypeScript / ECMAScript projects. Includes support for date ranges, day ranges, digit ranges, divisors... all of the things you'd expect to encounter in possible Cron values.