closes#8466closes#8664
Regression by 0d7daaad98.
- Fix length comparison.
- Fix loop(s) which iterated over all fields of array `pcc` even if it
was not filled up (try unicode 0x9f as statusline character).
Note about the tests:
- To input unicode with more than two hex digits you can use <C-v>U...:
a + U+fe20: a︠
a + U+fe20 + U+fe21: a︠︡