Extract words start with _ and end with ;

testing syntax autocomplete

Given an iput of page range by the user, validate if the input matches an acceptable format.

Regex to match consecutive identical characters. Then replace each match with `` Eg: "Hello" will yield "H1e1l2o1"

Regex quiz in python. Match all movie titles containing a word ending in 'tes'

Regra de validação de CPF.

find matched words

Pattern for validating a definitions.reference.issn value in the Citation File Format (CFF)

Pattern for validating definitions.reference.languages values in the Citation File Format (CFF)

Pattern for validating a definitions.reference.pmcid value in the Citation File Format (CFF)

Pattern for validating a definitions.swh-identifier value in the Citation File Format (CFF)

cron regular expression

Also matches the first letter after ' or -

Extract words separated by specific words

Not ending with png

Public library

Username check. started only [a-z] and stoped [a-z0-9]

Test for valid ActiveDirectory SamAccountName

This regex fixes tags that contain a color attribute, replacing them with tags containing a style attribute

IPv4 address RegExp.