On Mon, 27 Oct 2014 13:03:49 +0100 Marc André Tanner <m...@brain-dump.org> wrote:
> POSIX states for int wcwidth(wchar_t wc): "... or return -1 (if wc > does not correspond to a printable wide-character code)." Therefore > I think a return value of -1 should be handled gracefully. I have to agree here, even though I do not favor changing the code for broken libraries, I have to quote wcwidth(3): >> DESCRIPTION >> The wcwidth() function returns the number of columns needed to >> represent the wide character c. If c is a printable wide >> character, the value is at least 0. If c >> is null wide character (L'\0'), the value is 0. Otherwise -1 is >> returned. That's how POSIX-2001 defines it. So yeah, using abs() to "catch" the invalid case is fine, but could be refined even more. Cheers FRIGN -- FRIGN <d...@frign.de>
