On Fri, 19 Aug 2011 22:14:17 +0700 Martin Hosken <[email protected]> wrote:
> Therefore, I would suggest that a carefully allocated set of columns > for non L directionality PUA characters be encoded. This PUA doesn't > have to be big, with probably 1 column allocated per directionality. > I'm no expert in the bidi algorithm, but my guess is that we only > need a maximum of 5 columns and perhaps much less. The Ancient Egyptian hieroglyphic script, an RTL script of Bidi mirrored characters, has a Unicode LTR script of Bidi unmirrored characters for its modern representation that currently contains 1071 characters. However, I've seen a quote of about 6,000 different Graeco-Roman period hieroglyphs, so actually writing hieroglyphic Ancient Egyptian in plain text would need about 24 columns of characters. > I would value some input from Bidi experts on this. I hope my input helps in the mean time. I for one couldn't say whether the characters of the demotic Egyptian script should have a Bidi-class of R or AL. Richard.
