tree 120e283e284ccda4197ab9f00e26c14c5290921a
parent d80109dd5e960ab007911b73a77161e3e8047798
author Benno Schulenberg <bensberg@justemail.net> 1470472478 +0200
committer Benno Schulenberg <bensberg@justemail.net> 1470472478 +0200

chars: don't persist when only one of the compared sequences is invalid

Persisting might lead to count 'n' reaching zero, which would mean that
the needle has matched, which is wrong when one of the strings contains
an invalid or incomplete multibyte sequence.