Yunqa • The Delphi Inspiration

Fix two bugs related to over-large numbers so the behaviour is now the same as Perl.

The pattern a\K.(?0)* when matched against “abac” by the interpreter gave the answer “bac”, whereas Perl and JIT both yield “c”. This was because the effect of \K was not propagating back from the full pattern recursion. Other recursions such as (a\K.(?1)*) did not have this problem.

Restore single character repetition optimization in JIT.

Fix invalid single character repetition issues in JIT when the repetition is inside a capturing bracket and the bracket is preceeded by character literals.