[perl #119451] [EXPERIMENT] extended bracketed character classes

# New Ticket Created by  Ricardo SIGNES 
# Please include the string:  [perl #119451]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=119451 >


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

• [perl #119451] [EXPERIMENT] extended bracketed character classes by Ricardo SIGNES