Thomas Milo wrote: > > Tatweel is not a grapheme. I have come to the conclusion, that the letter > shaping mechanism needs a new catagory: amphibuous (literally "between > both", between skeleton and vowel as a category, as well as placed between > two surrounding letters - with optional and separately encoded tatweel. This > idea handles the problems with hamza U+0621, superscript alef, > trailing/superscript retroflex and possibly even the superscript waw. Think > of it, if you will. It's a lot simpler if you define tatweel as a chameleon instead of a frog. ;) It takes on ink or not depending on the inking of its neighbors, and it can bear stacking characters. Simple and elegant.
-g
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