poq <p...@gmx.com> added the comment: Martin, I think you meant to write "if w == 'A':". Some very common characters have ambiguous widths though (e.g. the Greek alphabet), so you can't just raise an error for them.
http://unicode.org/reports/tr11/ says: "Ambiguous characters occur in East Asian legacy character sets as wide characters, but as narrow (i.e., normal-width) characters in non-East Asian usage." So in practice applications can treat ambiguous characters as narrow by default, with a user setting to use legacy (wide) width. As Tom pointed out there are also a bunch of zero width characters, and characters with special formatting like tab, soft hyphen, ... ---------- nosy: +poq _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue12568> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com