[EXPERIMENT] extended bracketed character classes

[p5pRT]

Migrated from rt.perl.org#119451 (status was 'new')

Searchable as RT119451$

[p5pRT]

From @rjbs

perl 5.18.0 introduced extended regular expression bracketed character classes,
such as​:

  /(?[ \p{Thai} & \p{Digit} ])/

In perl 5.18.0, this is behind experimental​::regex_sets warnings and documented
as "subject to change as we gain field experience with it."

This ticket should collect lessons learned, fixes made, and the acceptance
criteria for dropping the "experimental" status of the feature.

--
rjbs

[khwilliamson]

There have been some bugs found in this over the years, that a search through tickets could show.

Currently, there is the open ticket #16779

[khwilliamson]

This was closed via #19503