Character Repertories Mail Archive: RE: CR> W3C Character Mo

RE: CR> W3C Character Model and Early Uniform Normalization

From: BIGELOW,JIM (HP-Boise,ex1) (jim.bigelow@hp.com)
Date: Mon Sep 22 2003 - 18:51:44 EDT

  • Next message: elliott.bradshaw@zoran.com: "RE: CR> W3C Character Model and Early Uniform Normalization"

    Ira wrote:
    >
    > (2) [answering Jim]
    > No - a printer should _never_ throw away any document data
    > that happens not to be normalized ...

    I agree. However, the XHTML-Print spec [1, 2, 3] in their Printer
    Conformance sections that a printer may "flush or otherwise reject a
    non-conforming XHTML-Print document." This is the source of my worry that a
    printer could reject a document that is not normalized.
    >
    > (3) [answering Jim]
    > No - a printer should _never_ trust the sender/generator
    > to have properly normalized Unicode data.

    If a very low cost printer assumed that an XHTML-Print document's content is
    normalized and it is not, the very worse that could happen is that word
    breaks occur in the wrong place, e.g., between a letter and it's non-spacing
    mark, or class/id selectors don't match the value of the class/id attribute
    -- causing the misapplication of style sheet rules.

    I think the a printer should normalize and therefore correctly handle
    combining characters. I just wondering if other printer people think such a
    normalization should be mandated for all printers.

    Jim

    [1] ftp://ftp.pwg.org/pub/pwg/xhtml-print/drafts/xhtml-print-draft-095.pdf
    [2] http://www.pwg.org/xhtml-print/HTML-Version/XHTML-Print.html
    {3]

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