If mew would be encountered, but the encounter is blocked by a repel, the game still treats things as if mew was encountered. This is because the function for encountering mew happens before repels are taken into account instead of when an encounter is actually confirmed.
If mew would be encountered, but the encounter is blocked by a repel, the game still treats things as if mew was encountered. This is because the function for encountering mew happens before repels are taken into account instead of when an encounter is actually confirmed.