Variable.regex.txt

# Matches a PowerShell Variable
(?<![`])                                                # Do not match if preceeded by a backtick (gotta allow for escape sequences)
# A PowerShell Variable Can Be Either:
(?>(                                                    # A Splatted Variable:
(?<IsSplat>\@)                                          # Which is an at sign
(?<Variable>\w+)                                        # Followed by a <Variable> (any number of repeated word characters)
|                                                       # Or Regular Variable,
\$                                                      # Which starts with a dollar sign
((?<Variable>\w+)                                       # Followed by a <Variable> (any number of repeated word characters)
|                                                       # Or a <Variable> enclosed in curly brackets
(?:(?<!`){(?<Variable>(?:.|\s)*?(?=\z|(?<!`)}))(?<!`)}) # using backtick as an escape
)))