Hi Khaled,
On Sun, 08 Jun 2008 19:21:28 -0600, Khaled Hosny
Luatex does not mirror characters that has a Bidi_Mirrored property when the text direction is set to RTL (TRT in Aleph), according to http://unicode.org/reports/tr9/#Mirroring, the different types of parenthesis that has Bidi_Mirrored property should be mirreored in RTL mode, but this isn't what I get. Is this a bug, feature, or am I missing some thing?
In addition to the comments by Arthur, Hans: This issue needs to be looked at in the larger context of bidi in luatex. For example, we need a flexible model to implement Bidirectional Character Types. For example, we need an option that will recognize certain character-types as RL and switch directions accordingly -- that is, automatically switch \textdir, within a given paragraph, in accordance with the directionality of the word-string. This needs a well thought-out model so that we can map the Unicode specification to our \texdir \pardir functionality... So the whole directionality issue needs to be looked at carefully, in addition to temporary patches like \setcharactermirroring[1] OTOH: SC Unipad gets this right is perhaps the ideal to strive for... Indeed, it implements unicode better than any text application of which I am aware... Also, we need not be too slavish: The Yudit author has pointed out areas where the bidi algorithm makes no sense or is deficient: http://www.yudit.org/bidi/surprise.html So this all needs careful thought. On my list... Best wishes Idris -- Professor Idris Samawi Hamid, Editor-in-Chief International Journal of Shi`i Studies Department of Philosophy Colorado State University Fort Collins, CO 80523