[perl #31152] [TODO] Regexp - case folding

[via RT]

# New Ticket Created by  Will Coleda 
# Please include the string:  [perl #31152]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org:80/rt3/Ticket/Display.html?id=31152 >


    Implement case folding

(From TODO file)