Variant sets
Khmer — Root Zone Label Generation Rules, 6th Edition
Code points grouped into sets of mutual variants. Every member of a set produces the same set of variant labels, so a registration of one has implications for all the others. Sets of a single member are omitted, as are the identity mappings RFC 7940 requires each member to declare.
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្ដ្ត
Source Direction Target Disposition Ref Comment ្ដ U+17D2 + U+178A ↔ ្ត U+17D2 + U+178F blocked Khmer subscript form homoglyph ↔ declared both ways ⇆ both ways, different disposition each way → one direction only