Forms for invisible ZWJ (and ZWNJ)

From: Vinod Kumar (
Date: Wed Jan 19 2005 - 02:18:51 CST

  • Next message: Adam Twardoch: "Re: Forms for invisible ZWJ (and ZWNJ)"

    Unicode 4.0 Chapter 9.1 Page 223 states "The ZERO WIDTH JOINER denotes
    a nonvisible letter..". The standard itself shows the shape of ZWJ
    as the letters ZWJ within a dotted box. Fonts from Microsoft Typography
    depict it as a Magic wand.

    The Unicode standard seems to imply that the display of ZWJ should
    not be visible at all. If it is displayed as a visible sign, then
    production shaping software would have to use the ZWJ for shaping
    and then expunge the ZWJ. Won't it be better to make it invisible
    so that we need not worry about expunging it.

    For testing purpose, a visible form is better as otherwise it may
    be difficult to track down shaping curiosities with invisible players.

    Vinod Kumar
    Project IndiX

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