in reply to Implement uclast with a regex

What is the best (easiest) way do this?

Easiest would be using reverse twice:

reverse ucfirst lc reverse "ACta"

Try not to hurt our brains with hard to read regexes :)

Juerd # { site => 'juerd.nl', plp_site => 'plp.juerd.nl', do_not_use => 'spamtrap' }