Re: [uievents] specify how compositionend works if the caret has been moved to a different element (#5)

> The spec says nothing about modifying the selection being forbidden as part of compositionstart, so that sounds as Firefox is planning to break with the spec?

Not planning, but if spec would be changed to so, Firefox implementation become much simpler... Sigh.

> Ok, so you agree that this is a bug and you will fix it?

Yeah, if I can. Full support of TSF is very big project for web browsers because requirements (limitations) of TSF may not conform to some web standards. Therefore, Firefox including a lot of "fake" between TSF and DOM tree.

FYI: Chrome supports TSF with transitory context, that means to support partially, additionally it's not used in desktop mode in default settings. IE11 also supports TSF, but I'm not sure if it's using transitory context.

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