Re: Questions on ZWNBS

From: Jim Allan (jallan@smrtytrek.com)
Date: Sat Aug 02 2003 - 14:38:21 EDT

  • Next message: Chris Jacobs: "Re: Questions on ZWNBS"

    Theodor H. Smith posted:

    > I'm thinking that 0xFEFF shouldn't be in a UTF16BE string, except at
    > the start right?
    >
    > For other kinds of UTF, I'm not sure if it is allowed or not. I know it
    > is allowed in UTF16LE, although discouraged.
    >
    > Instead of "can't use ZWNBS", I think that char is discouraged. Where
    > is the rule that discourages it?

    See http://anubis.dkuug.dk/JTC1/SC2/WG2/docs/n2235.htm for the proposal
    to replace the ZWNBS use of U+FEFF with a new character U+2060 WORD JOINER.

    See http://www.unicode.org/charts/PDF/UFE70.pdf for current definition
    of U+FEFF stating:

    • use as an indication of non-breaking is deprecated; see 2060  instead.

    See http://www.unicode.org/charts/PDF/U2000.pdf for the definition of
    U+2060 WORD JOINER which states:

    • a zero width non-breaking space (only)
    • intended for disambiguation of functions for byte order mark
    → FEFF zero width no-break space

    U+20620 WORD JOINER should be used instead of U+FEFF if one's font and
    application supports it.

    Jim Allan



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