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

Not ending with png

Extract words separated by specific words

cron regular expression

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

For Mike Griffin

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

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

find matched words

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

Here is what I came up with for a 'reasonable' e-mail validator. Explanation @ https://geekalicious.org/d/90-validating-e-mail-addresses-with-regex-pcre

This Regex can be used to find the custom array types in jsdoc typdefs

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

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

testing syntax autocomplete

Extract words start with _ and end with ;

captures the simple names and composed names whose first letter is Upper letter, and following letters are lower letters, for each composed name, Accepts accents in both upper and lower letters. for ex: Jean-Luc, Jean, Pierre, Pierre-Louis, Özil-Ricô...

This finds the boundaries of words in a camel case string