Simple Positive Lookbehind - only selects what is after the @ IF what comes before IS 'jeffery' Based on this (awesome) guys https://youtu.be/aIEjh0YsxWA?t=228

Simple positive Lookahead - Select 'box' only if what comes after is '-shadow' See this youtube https://youtu.be/aIEjh0YsxWA?t=228

Selects box only if what comes after is NOT -shadow

Matching CentraSite registry keys (uddi) Matches output with prefix (uddi:) Matches output without prefix does not match to service names and descriptions

work in progress.

Extracts "example" from URLs like "http://www.example.com"

Get tokenized document number

RegEx case2

Find all JIRA H2 from an Inline MD. In MD all # are considered H1 in JIRA Syntax In MD all ## are considered H2 in JIRA Syntax In MD all ### are considered H3 in JIRA Syntax In MD all #### are considered H4 in JIRA Syntax...