On 2023-07-04 12:31, Bruno Haible wrote:
Yes.
As far as I can see, this proposed patch should cope with (size_t) -3
returns correctly.
I still see a couple of problems with it. First, it mishandles the case
where mbrtoc32 returns 0, which ISO C allows.
Second and more interestingly, its "fwrite (tp0, 1, bytes, out);" could
output a byte string that represents multiple characters where the first
character fits in the output column width but the remaining characters
do not, and this would exceed the output column width.
I suppose one could fix the second problem by not outputting such a byte
string, just as the code already suppresses the output of a byte string
representing a single character that occupies multiple columns
straddling the column border. That is, count all the columns of all the
characters that the byte string represents, before deciding whether to
output the byte string.
