and YAML::XS should make use of XS(XS_re_regexp_pattern) in universal.c

And how does one do that? XS(XS_re_regexp_pattern) creates the Perl sub re::regexp_pattern, so that's a very weird way of saying that YAML::XS should call Perl sub re::regexp_pattern.

Inevitably, this raises backcompat issues.

This can be addressed by storing them as a different type than perl/regexp (perl/regexp_plus_mods?).

In reply to Re^3: YAML::XS perl/regexp (?u:(?u: by ikegami
in thread YAML::XS perl/regexp (?u:(?u: by Boldra

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