Feature request: -strict

[Grinnz]

It would be nice to provide an option to prevent any fallback to the core regex engine, in case you want to only use PCRE2. See similar option for re::engine::RE2: https://metacpan.org/pod/re::engine::RE2#NOTES

[rurban]

Indeed, thanks. Should be easy to implement.
I'm just not sure about the name. strict looks more like a pcre2 capability, which it doesn't have.

-strict => 1
Be strict, i.e. don't allow regexps that are not supported by this engine. Don't fallback to the CORE regex engine, rather error.

Maybe -no-fallback, -no-core, -only-pcre2 or -pcre2-only are better.

[Grinnz]

-no-fallback seems pretty descriptive.