On Wed, 21 Mar 2001, Marco Cimarosti wrote:
> struct MyWysiwygGlyph
> {
> wchar_t GlyphCode;
> int EmbeddingLevel;
> };
>
> I think that Roozbeh had something quite similar in mind.
Yes. I was not sure that if that's enough, but after this discussion, I
believe them to be enough. I will try to implement that as part of
fribidi, the first GPL-compatible Unicode-conformant bidi engine in the
wild.
> 3) The lowest level in each paragraph *must* be either 0 (for a LTR
> paragraph) or 1 (for a RTL paragraph).
I have read UAX #9 many times; where have you concluded that from?
> 4) Embedding levels are defined implicitly (e.g. a number in Arabic has an
> embedding level higher that the surrounding text) or by means of explicit
> bidi controls. In any case, they are *orthogonal* to markup tags. So, if you
> have a tagging scheme that imposes that tags are nested into each other
> (e.g. XML), embedding levels do not necessarily follow the rule. E.g., see
> how tagging and Unicode embedding overlap in: "<BOLD> abc &RLE; def </BOLD>
> ghi &PDF; ijk".
Oh, oh! That kind of thing is illegal in XML. Just take a look at "Bidi
embedding controls" section in UTR #20 at:
http://www.unicode.org/unicode/reports/tr20/#Bidi
--roozbeh
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