Re: [w3c/editing] Expose keyboard language? (#351)

> thanks for the comment, the scenario is the author wants to know which IME (ex. Japanese) is current in use, so they can load corresponding fonts in their app and render the typed text in a canvas element.

I don't think you can ever determine which fonts are needed before the text is actually typed. Japanese IME, for example, supports converting romaji as well as an arbitrary unicode character from a table of characters. Not only that, users can simply paste some content from another application. So the only reliable way to load fonts is to either load the most generic font or determine it once new characters are inserted into the document.

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