Is there a bug in Ruby lookbehind assertions (1.9/2.0)?

Question

Why doesn\'t the regex (?<=fo).* match foo (whereas (?<=f).* does)?

\"foo\" =~ /(?<=f).*/m          => 1
\         


        

Answer 1

This has been officially classified as a bug and subsequently fixed, together with another problem concerning \Z anchors in multiline strings.