util: wrap lines with multi-byte characters correctly (issue2943)
This re-introduces the unicode conversion what was lost in d320e70442a5 5 years
ago and had the comment:
To avoid corrupting multi-byte characters in line, we must wrap
a Unicode string instead of a bytestring.
Ancestors of 5
4 2 0
Ancestors of 6 and 5
3 4 2 1 0
Ancestors of 5 and 4
4 2 0
Descendants of 5
7 8
Descendants of 5 and 3
6 7 8
Descendants of 5 and 4
5 7 8