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Mete Kural wrote: >> Hello Gregg, >> >> By <TATWEEL> you mean the Unicode codepoint 0640 Arabic Tatweel? >> Using 0640 Tatweel in Arabic text on a regular basis is a >> non-starter. Tatweel is a typographic feature, it shouldn't be >> encoded in raw text. But a rendering engine could perhaps make use >> of it by pre-processing raw encoded text and inserting tatweels >> where desired before sending it to be rendered. An encoder should >> not have to encode Tatweels on a regular basis in Arabic text. >> >> Regards, >> Mete >> >> ---------- Original Message ---------------------------------- >> From: Gregg Reynolds <[EMAIL PROTECTED]> >> Reply-To: General Arabization Discussion <[email protected]> >> Date: Wed, 03 Aug 2005 11:02:03 -0500 >> >>> Thomas Milo wrote: >>>> Meor Ridzuan Meor Yahaya wrote: >>>> >>>> >>>>> Do you have ideas on arabic justification that you don't mind >>>>> sharing with us? >>>> >>>> >>>> Yes. Considering keshide or madd a justification aid does not do >>>> justice to the art of calligraphy or typesetting. Keshide is an >>>> esthric device, not a trick. It serves to change the general >>>> appearance of text, in other words, you use them or you don't. If >>>> used, in calligraphy and well-executed typesetting, keshide is >>>> bound to many contextual constraints, which, just like the >>>> ligature system, are not generally know among computer >>>> enthousiasts, with devastating consequences for the Islamic art of >>>> text composition. >>>> >>>> To sum it up: justification can very well be achieved by subtle >>>> variation in intra-word and inner-word spacing. Only as a last >>>> resort keshide should be used for justification. >>>> >>> >>> Here's my solution: define <TATWEEL> to mean "this place is a >>> candidate for extension of the line, regardless of coloration", >>> such that it takes on color based on context. E.g. >>> <k><tatweel><t><b> means the positive (inked) space between <k> and >>> <t> (i.e. the tiestroke) may be extended. <d><tatweel><w><r> means >>> the negative space (whitespace) between <d> and <w> may be >>> extended. The relative extent of such stretching would be set by >>> typesetting policy in the software. Then there are four groups of >>> extension candidates: ordinary inter-word negative space, >>> explicitly specified stretch candidates (using tatweel), and >>> ordinary intra-word positive (black) and negative (white) space. >>> It's up to the composition system to set policy regarding how extra >>> space is distributed among these categories. This is pretty much >>> how the TeX justification algorithm works. >>> >>> -gregg >>> >>> >> >> -- >> Mete Kural >> Touchtone Corporation >> 714-755-2810 >> -- >> > > > >> _______________________________________________ >> General mailing list >> [email protected] >> http://lists.arabeyes.org/mailman/listinfo/general
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