Re: [editing-explainer] What browser internals can be exposed to help us move the caret in (and against) the block direction? (#56)

@kojiishi : I don't think we want to expose x-coordinate because preserving x-coordinate should really be considered as a platform/browser specific behavior.  It should encapsulated in whatever abstraction we come up.

@ctalau : I don't think range would quite work because there a single DOM position may represent two visual positions for the caret (e.g. before and after a line wrap).

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