Tomohiro KUBOTA wrote on 2001-11-28 02:13 UTC: > To study about BiDi, is the following document enough, or do you > have some recommendation? (though I have not read the document yet). > > Unicode Standard Annex #9 The Bidirectional Algorithm > http://www.unicode.org/unicode/reports/tr9/
ECMA 48 and ECMA TR/53 is probabaly more relevant. The Unicode bidi algorithm was written for paragraph formatting systems, not for VT100 style terminal emulators. BiDi is an intrinsically conceptually messy area anyway, you are unlikly to find a really satisfactory and elegant solution for terminal emulators. http://www.cl.cam.ac.uk/~mgk25/unicode.html#xterm http://www.ecma.ch/ecma1/TECHREP/E-TR-053.HTM http://www.ecma.ch/ecma1/STAND/ECMA-048.HTM Read the ECMA stuff very carefully. It is somewhat difficult to digest though, so take your time, but it is the most thorough attempt ever made to define bidi terminal semantics. I don't think though anyone ever implemented it. You might end up with the same conclusion as I did: Bidi is best kept completely out of the terminal and the vision of bidi ever working as naturally and simple between terminals and simple Unix tools such as cat or ls is probabaly a naive illusion. Making bidi simple will make a lot of other things horribly complicated, and very few developers will follow. The use of Hebrew, Arabic and Syriac in writing order should under Unix probabaly be restricted to text editors and word processors. In file names, urls, environment variables, etc., use either visual order or the latin script. Really. Markus -- Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK Email: mkuhn at acm.org, WWW: <http://www.cl.cam.ac.uk/~mgk25/> _______________________________________________ I18n mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/i18n
