[Indic] Unnecessary tagging of composite Kannada matras

n8willis / opentype-shaping-documents

Documentation of OpenType shaping behavior

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[Indic] Unnecessary tagging of composite Kannada matras #75

Closed adrianwong closed 5 years ago

adrianwong commented 5 years ago

This section of the Kannada specification mentions that the matras:

U+0CC7 - Sign Ee
U+0CC8 - Sign Ai
U+0CCA - Sign O
U+0CCB - Sign Oo

should be given a position tag. However, these are composite matras, and would have already been decomposed in the prior step.

n8willis commented 5 years ago

I think that I included all the matras in that list in the step out of the "repeat information to avoid ambiguity" principle. Essentially, whenever we were enumerating matras, I wanted to ensure that they were all accounted for, in case someone arrives at the step via some unpredictable path (like a full-text search result).

So I think just clarifying that via a reword would be the best fix: note the composite issue, but don't just cut them out without explanation.

n8willis commented 5 years ago

Clarifying note added in d9d31cb.