[Dev-luatex] Modifying the LuaTeX Engine

Yue Wang yuleopen at gmail.com
Fri Dec 26 17:39:59 CET 2008


well, knuth tex+cjk macro and xetex + macro support vertical
typesetting. but will be very messy:(
see http://gezhu.googlecode.com/files/demo-xelatex-071106.pdf for examples.

Yue Wang

2008/12/26 Yannis Haralambous <yannis.haralambous at telecom-bretagne.eu>:
> Le 26 déc. 08 à 02:03, Idris Samawi Hamid ادريس سماوي حامد a écrit :
>
> As I mentioned above, I think the last Omega primitives are newer than
> TeX-e-Parsi's. But a related issue: Are those primitives based on the
> unicode bidi algorithm?
>
> Implementing Unicode bidi will mean keeping track of the (directionality of
> the) first character of every horizontal list so that calculations of
> embedding levels can be done. Omega has never done that, and it couldn't do
> it because OTPs use buffers which are most of the time smaller than the
> whole paragraph. Is TeX-e-Parsi doing it?
> Furthermore you all talk about LTR and RTL, but what about vertical
> typesetting, in the Chinese or in the Mongolian way? Obviously TeX-e-Parsi
> doesn't care about that.
>
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