2011/8/16 Asmus Freytag <[email protected]>: > On 8/16/2011 1:57 AM, Andrew West wrote: >> >> On 16 August 2011 02:59, Richard Wordingham >> <[email protected]> wrote: >>> >>> All I've got to go on is the penultimate sentence in TUS 6.0 Section >>> 10.2 - 'Rarely, stacks are seen that contain more than one such >>> consonant-vowel combination in a vertical arrangement'. >> >> <http://www.unicode.org/versions/Unicode6.0.0/ch10.pdf#G30110> >> >> Which is followed immediately by the caveat: >> >> "These stacks are highly unusual and are considered beyond the scope >> of plain text rendering. They may be handled by higher-level >> mechanisms". > > That's all well and good. > > > The question is: have any such "mechanisms" been defined and deployed by > anyone?
I had the same feeling when first reading this. Because it does not say if the text fragments, containing parts of the vertical stack, can effectively be encoded, and how... For now, I suspect that they can only be represented by graphics, and not by some series of UCS code points (except possibly a "defective" one, i.e. without a base letter for the lower parts of the stack). So, is there, for such use the possibility of encoding a null base consonnant for holding the lower parts in fragments whose layout will be controled by such "higher-level mechanism" ?? Or can we use, for example, a zero-width space ? -- Philippe.
