before:
$ arc lint Exception Error in parsing '.arclint' file, for linter 'Anonymizable fields'. Parameter has invalid type. Expected a regular expression, but value is not valid: preg_match(): Delimiter must not be alphanumeric or backslash (Run with `--trace` for a full exception trace.)
after:
$ arc lint Exception Error in parsing '.arclint' file, for linter 'Anonymizable fields'. Parameter 'script-and-regex.regex' has invalid type. Expected a regular expression, but value is not valid: preg_match(): Delimiter must not be alphanumeric or backslash (Run with `--trace` for a full exception trace.)