Perl Regex in BigFix 10.0.8

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1

I read this as “PCRE now supported on Windows”. Is that right?

2

Yes, that’s correct. Note that the Docs pages don’t seem to be updated yet. Perl Regex is introduced as a new Inspector (on Windows only for now). The new Inspectors are

perl regexes <string>: regular expression

perl regular expressions <string>: regular expression

case insensitive perl regexes <string>: regular expression

case insensitive perl regular expressions <string>: regular expression

perl regex escape of <string>: string

There are many examples of Perl-Compatible Regular Expressions out there, one of the guides that I like is at https://www.php.net/manual/en/reference.pcre.pattern.syntax.php

Take the example from https://www.php.net/manual/en/regexp.reference.assertions.php of matching “the string ‘foo’ preceded by three digits but not 999”, we can see the new ‘perl regex’ inspector works with patterns the original ‘regex’ inspector could not use:

q: matches(regex("(?<=\d{3}(?<!999))foo")) of "123foo"
E: The expression could not be evaluated: Regex Error - No preceding re for repetition op.

q: matches(perl regex("(?<=\d{3}(?<!999))foo")) of "123foo"
A: foo
T: 0.218 ms
I: plural regular expression match

q: matches(perl regex("(?<=\d{3}(?<!999))foo")) of "999foo"
T: 0.099 ms
I: plural regular expression match
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