On 19/06/13 14:52, Abigail wrote: > > That's not a lookahead assertion. This is: > > $ perl -wE 'say for "0123456789" =~ /(?=(\d{3}))/g' > 012 > 123 > 234 > 345 > 456 > 567 > 678 > 789 > $ > > So there's a typo on p.248 gvim